Respironics-BiPAP-Vision-Service-Manual - Static Content

h 

Service 

Manual

The BiPAP Vision Ventilatory Support System is the subject of U.S. patents #5148802, 

#5239995, #5313937, #5433193, and other pending U.S. and foreign patents. BiPAP is a registered 

trademark of Respironics. 

Copyright © 1998-2007 Respironics. All rights reserved. 

BiPAP Vision Service Manual 1045049

1045049 

Limited Warranty 

Respironics warrants that the BiPAP ® Vision TM Ventilatory Support System (BiPAP Vision) shall be free from defects 

of workmanship and materials and will perform in accordance with the product specifications for a period of one year 

from the date of sale by Respironics. If the product fails to perform in accordance with the product specifications, 

Respironics will repair or replace—at its option—the defective material or part. Respironics will pay customary 

freight charges from Respironics to the dealer location only. This warranty does not cover damage caused by 

accident, misuse, abuse, alteration, and other defects not related to materials or workmanship. 

Respironics disclaims all liability for economic loss, loss of profits, overhead or consequential damages which may 

be claimed to arise from any sale or use of this product. Some states do not allow the exclusion or limitation of 

incidental or consequential damages, so the above limitation or exclusion may not apply to you. 

This warranty is given in lieu of all other express warranties. In addition, any implied warranty, including any 

warranty of merchantability or fitness for the particular purpose, is limited to one year. Some states do not allow 

limitations on how long an implied warranty lasts, so the above limitation may not apply to you. This warranty gives 

you specific legal rights, and you may also have other rights which vary from state to state. 

The warranty for repairs is 90 days for labor and one year on the part(s) that was replaced. 

To exercise your right under this warranty, contact your local authorized Respironics dealer or contact Respironics 

at: 

Visit Respironics Home Page on the World Wide Web at: 

http://www.respironics.com 

BiPAP Vision Service Manual

Table of Contents 

Chapter 1: Introduction .......................................................................................1-1 

1.1 BiPAP Vision Ventilatory Support System Overview .............................................. 1-2 

1.2 Service Notice ................................................................................................................. 1-3 

1.3 Technical Support .......................................................................................................... 1-3 

Chapter 2: Warnings, Cautions, and Notes ....................................................2-1 

2.1 Warnings.......................................................................................................................... 2-2 

2.2 Cautions........................................................................................................................... 2-3 

2.3 Notes ................................................................................................................................ 2-4 

Chapter 3: Description and Theory of Operation ........................................3-1 

3.1 BiPAP Vision System ..................................................................................................... 3-2 

3.2 Power Supply Subsystem (PSS) ................................................................................... 3-6 

3.3 Main Control (MC) ........................................................................................................ 3-8 

3.4 Pressure Control (PC) .................................................................................................... 3-9 

3.5 Display Control (DC) ................................................................................................... 3-11 

3.6 Airflow Module (AFM) ............................................................................................... 3-14 

3.7 Oxygen Module (OM) ................................................................................................. 3-16 

3.8 Description of Ventilator Modes................................................................................ 3-17 

3.9 Nurse Call / Remote Alarm ....................................................................................... 3-19 

3.10 Patient Disconnect Alarm Description ...................................................................... 3-21 

Chapter 4: Specifications and Control Ranges..............................................4-1 

4.1 Specifications .................................................................................................................. 4-2 

4.2 Control Ranges and Increments ................................................................................... 4-5 

Chapter 5: Routine Maintenance......................................................................5-1 

5.1 Cleaning........................................................................................................................... 5-2 

5.2 Replacing the Inlet Filter............................................................................................... 5-3 

5.3 Cleaning / Replacing the Nylon Mesh Inlet Filter ................................................... 5-4 

5.4 Replacing the Oxygen Regulator Filter ...................................................................... 5-6 

5.5 Changing the System Fuses .......................................................................................... 5-8 

5.6 Voltage and Fuse Selection ......................................................................................... 5-10 

5.7 Power Cord Inspection ................................................................................................ 5-10 

5.8 Internal Alarm Battery ................................................................................................. 5-11 

5.9 Preventive Maintenance Schedule ............................................................................ 5-14 

Chapter 6: Troubleshooting ................................................................................6-1 

6.1 Overview ......................................................................................................................... 6-2 

6.2 Description of System Alarms ...................................................................................... 6-5 

6.3 Alarm Indicators ............................................................................................................ 6-7 

6.4 Troubleshooting ............................................................................................................. 6-8 

6.5 Error Codes ................................................................................................................... 6-12 

6.6 Vent Inop Errors ........................................................................................................... 6-14 

i

Chapter 7: Repair and Replacement ................................................................7-1 

7.1 Contact Information ....................................................................................................... 7-2 

7.2 Exploded View ............................................................................................................... 7-3 

7.3 BiPAP Vision Repair Kits ............................................................................................. 7-5 

7.4 Mobile Stand II & III Repair Parts .............................................................................. 7-10 

7.5 Replacement Identification Photos ........................................................................... 7-11 

7.6 Touch Pad Replacement Instructions ........................................................................ 7-59 

Chapter 8: Testing and Calibration ..................................................................8-1 

8.1 Overview ........................................................................................................................... 8-2 

8.2 Recommended Testing after Part(s) Replacement .................................................... 8-3 

8.3 Exhalation Port Test ....................................................................................................... 8-5 

8.4 Total Operating Hours Transfer Procedure ............................................................... 8-8 

8.5 Blower / Valve Calibration Procedure ..................................................................... 8-10 

8.6 Performance Verification ............................................................................................. 8-12 

8.7 Run-In Cycle Procedure .............................................................................................. 8-16 

8.8 System Final Test .......................................................................................................... 8-18 

8.9 PC/Laptop Set-up Procedure .................................................................................... 8-37 

8.10 Test Cable Usage Definitions ..................................................................................... 8-40 

8.11 Oxygen Flow Module Test ......................................................................................... 8-41 

Chapter 9: Option Instructions ..........................................................................9-1 

9.1 PAV/T Mode Installation or EPROM Upgrade ........................................................ 9-2 

9.2 Oxygen Baffle Installation Instructions ....................................................................... 9-6 

Chapter 10: Summary of Upgrades for Repairs of Vision units with Serial 

Numbers 100500 to 106000......................................................... 10-1 

10.1 Summary of upgrades for repairs of Vision units w/ serial numbers 

100500 to 106000 ........................................................................................................... 10-2 

10.2 Repair Kits No Longer Manufactured ..................................................................... 10-5 

10.3 Installation/Upgrade Instructions for Repair Parts ............................................... 10-6 

Appendix A: Tools and Equipment ................................................................ A-1 

A.1 Service Tools and Supplies.......................................................................................... A-2 

A.2 Acceptable Test Equipment......................................................................................... A-3 

A.3 TSI, Inc. Certifier Test System .................................................................................. A-6 

Appendix B: Schematics .................................................................................... B-1 

B.1 Schematic Statement .................................................................................................... B-2 

B.2 Main Control (MC) ...................................................................................................... B-3 

B.3 Display Control (DC) .................................................................................................. B-9 

B.4 Pressure Control (PC) ................................................................................................ B-20 

B.5 Air Flow Module (AFM) ............................................................................................ B-25 

B.6 Oxygen Module (OM) ................................................................................................ B-26 

B.7 Power Supply ............................................................................................................. B-27 

ii

Chapter 1: Introduction 

BiPAP Vision Service Manual 

Chapter 1: Introduction 1-1 

1.1 BiPAP Vision Ventilatory Support System Overview .......... 1-2 

1.2 Service Notice.............................................................................. 1-3 

1.3 Technical Support ....................................................................... 1-3 

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Chp. 1

1-2 



1.1 BiPAP ® Vision Ventilatory Support System Overview 

The BiPAP Vision Ventilatory Support System (BiPAP Vision), shown in Figure 1-1, is a microprocessor-controlled, 

positive pressure ventilatory assist system. The BiPAP Vision incorporates a user interface with multifunction 

keys, real time graphic displays, and integral patient and system alarms. 

The BiPAP Vision features a centrifugal blower to generate airflow, as well as hardware and software platforms 

that can be upgraded with an oxygen module and additional patient alarms. The system operates in the Continuous 

Positive Airway Pressure (CPAP), Pressure Support (S/T), and optional Proportional Assist Ventilation/Timed 

(PAV/T) modes. 

The BiPAP Vision contains a variety of integrated safety and self-diagnostic features. All system functions are 

checked at start-up and during operation. Errors are reported by visual and/or audible indicators. 

Pressure regulation is achieved by monitoring proximal airway pressure and adjusting flows accordingly to 

ensure that the proximal pressure equals the set pressure. 

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Rate 

12 

BPM 

EPAP 

6 

cm H 2O 

IPAP 

15 

cm H 2O 

Vol (ml) 

Flow (L/min) 

MODE: S/T MONITORING 

P (cm H 2 O) 

Options 

VT 1000 ml PIP 15 cm H2O MinVent 14 L/min 

PS = 9 cm H2O 

%O2 

55 

% 

Figure 1-1 

The BiPAP Vision Ventilator 


1.2 Service Notice 

This service manual was prepared by Respironics primarily for use by qualified technicians 

required to service the BiPAP Vision. 

1.3 Technical Support 


Chapter 1: Introduction 1-3 

Respironics is committed to customer satisfaction, and may be contacted with any questions or for technical 

support at the following numbers: 

U.S. and Canada 

International 

Phone: 1-800-345-6443 

Fax: 1-800-866-0245 

Phone: 1-724-387-4000 

Fax: 1-724-387-5012 

E-Mail service@respironics.com 



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Chp. 1

Chapter 2: Warnings, Cautions, and Notes 2-1 

Chapter 2: Warnings, Cautions, and 

Notes 

2.1 Warnings ........................................................................................ 2-2 

2.2 Cautions ......................................................................................... 2-3 

2.3 Notes .............................................................................................. 2-4 


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2-2 

Chapter 2: Warnings, Cautions, and Notes 


WARNING: Indicates the possibility of injury. 

CAUTION: Indicates the possibility of damage to the device. 

NOTE: Places emphasis on an operating or procedural characteristic. 

2.1 WARNINGS 

2.1.1 Safety 

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• Do not use the BiPAP Vision in the presence of a flammable anesthetic mixture with 

air, oxygen, or nitrous oxide. 

Oxygen supports combustion. Do not use oxygen while smoking or in the presence of 

an open flame. 

When using the optional oxygen module, the BiPAP Vision does not provide an oxygen 

sensor to monitor oxygen concentrations delivered to the patient circuit. Therefore, the 

use of oxygen with the BiPAP Vision should be monitored through oximetry. 

NOTE: Refer to the Clinical Manual for guidelines on Applications and Operation. 

2.1.2 Operational 

If the “Ventilator Inoperable” indicator illuminates, refer to Chapter 6 of this manual for 

troubleshooting guidelines. 

Never attach oxygen tubing or any positive pressure source to the pressure port on the 

front panel of the BiPAP Vision. 


Warnings (Continued) 

2.1.3 Service 

Chapter 2: Warnings, Cautions, and Notes 2-3 

CAUTION: Electronic components used in this device are subject to damage from static 

electricity. Repairs made to this device must be performed only in an antistatic, 

ESD-protected environment. 

2.1.4 Cleaning 

2.2 CAUTIONS 

Do not attempt to make connection to the diagnostic RS232 connector on the back panel of 

the BiPAP Vision to obtain repair information while the unit is operating on a patient. 

To assure the safety of the service technician and specified performance of the device, 

Respironics recommends that only qualified technicians perform repairs to the BiPAP 

Vision. Contact Respironics Technical Service for service training and authorization 

information. 

High voltages are present inside this device. To avoid electrical shock, disconnect the 

electrical supply before attempting any repairs on the device. 

For continued protection against risk of fire, replace fuses with those of the same type 

and rating only. 

To avoid electrical shock, unplug the BiPAP Vision unit before cleaning it. 

While cleaning the unit, do not allow any liquid to enter the cabinet or the inlet filter. 

Care should be taken to avoid exposing the BiPAP Vision to operating, storage, and 

transport temperatures near the extremes specified in Chapter 4. If exposed to such 

temperatures, allow the unit to cool or warm to room temperature before turning it on. 

The unit must be positioned on its base for proper operation. 

Always use an inlet filter when the BiPAP Vision is in use. 

If using the oxygen module, do not exceed 100 psig oxygen supply pressure. 


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2-4 


2.3 NOTES 

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This device contains a rechargeable nickel-cadmium (NiCAD) battery which is used by 

the alarms in the event of a power failure. 

• Refer to the BiPAP Vision Clinical Manual for a complete list of operational Warnings, 

Cautions, and Notes. 

Additional WARNINGS, CAUTIONS, and NOTES are located throughout this manual. 


Chapter 3: Description and Theory of Operation 

Chapter 3: Description and Theory of 

Operation 

3.1 BiPAP Vision Ventilatory Support System ............................... 3-2 

3.2 Power Supply Subsystem (PSS) ................................................ 3-6 

3.3 Main Control (MC)...................................................................... 3-8 

3.4 Pressure Control (PC) ................................................................. 3-9 

3.5 Display Control (DC) ................................................................ 3-11 

3.6 Airflow Module (AFM) ............................................................ 3-14 

3.7 Oxygen Module (OM) .............................................................. 3-16 

3.8 Description of Ventilator Modes ............................................. 3-17 

3.9 Nurse Call / Remote Alarm .................................................... 3-19 

3.10 Patient Disconnect Alarm ........................................................ 3-21 


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3-1

3-2 



3.1 BiPAP Vision Ventilatory Support System 

The BiPAP Vision is a microprocessor-controlled, positive pressure ventilatory assist system. The 

system’s integral air intake filter draws in ambient air which is then pressurized by the system’s centrifugal 

blower assembly. The In-Line Flow Restrictor (ILFR) valve and Pressure Regulation Valve (PRV), 

which are both located in the blower discharge airway, regulate total flow and pressure at the blower 

discharge system. An oxygen module can be installed to add a controlled source of supplemental oxygen, 

up to 100%, to the patient. 

The Pressure Control (PC) board continuously monitors the readings from the Airflow Module (AFM) of 

total gas flow, temperature, generated pressure, and patient circuit pressure to ensure prescribed therapy 

to the patient. The PC board transmits process data to the Main Control (MC) board which then provides 

overall control of the BiPAP Vision, including conveying instructions to the PC board regarding required 

valve stem position and blower speed. 

The unique design and operation of the ventilator makes it especially suited for mask applications. 

Designed with the BiPAP Auto-Trak Sensitivity TM feature that automatically adjusts to changing circuit 

conditions, the ventilator is capable of ensuring optimum patient-ventilator synchronicity despite changes 

in breathing patterns and circuit leaks. (Refer to the BiPAP Vision Clinical Manual.) 

A liquid crystal display (LCD) screen is mounted on the front enclosure of the BiPAP Vision. The LCD 

and the Display Control (DC) board provide the primary user interface with the ventilator, including the 

visual presentation of data, control features, and visual and audible presentation of alarm conditions. The 

user interacts with the ventilator through the touch pad and rotation of the rotary encoder while observing 

the results of this input on the display. The information provided on the display varies depending on 

the state of the ventilator and / or the operations being performed. 

The BiPAP Vision incorporates a number of safety features and self-diagnostic systems. System internal 

functions are checked automatically at start-up, and periodically throughout normal operation. An 

audible and visual alarm announces failures of principal subsystems. Integrated patient alarms are also 

provided and are announced on a visual message display area as well as with an audible tone. 

The following sections of this chapter describe in more detail the major subsystems and components that 

make up the BiPAP Vision and its basic theory of operation. 

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BiPAP Vision Ventilatory Support System (Continued) 

Subsystem 


Function 

PSS The Power Supply Subsystem (PSS) provides DC power to the BiPAP Vision 

from an AC source. 

MC The Main Control (MC) board or Main Control Subsystem (MCS) performs all control, 

or data acquisition, and calculations required for the user-selected parameters. In addition, 

MCS the MC performs the start-up test and reports all errors. 

PC The Pressure Control (PC) board or Pressure Airflow Subsystem (PAS) controls the blower 

or and valves to generate and regulate the system pressure. The PAS senses the outlet 

PAS pressure and the patient pressure and regulates the outlet pressure to the patient circuit. 

DC Through the touch pad, the Display Control (DC) board or Display/Control 

or Subsystem (D/CS) evaluates user inputs and passes valid parameters to the MC. The DC 

D/CS receives display data from the MC. The DC also has its own internal functions; the 

results of which are reported to the MC. 

AFM The Airflow Module (AFM), including the mass airflow sensor in the airstream, 

provides an airflow measurement interface to the PC, allowing the PC to 

measure total flow, temperature, and system pressure. 

ILFR The In-Line Flow Restrictor (ILFR) valve assembly regulates the total flow 

from the blower discharge. 

PRV The Pressure Regulation Valve (PRV) assembly is opened during exhalation to 

allow the patient flow to be exhausted. 

OM The Oxygen Module (OM) subassembly regulates and proportions the oxygen released 

into the air from the blower according to the oxygen concentration level set on the 

parameters screen. 


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3-3

3-4 


BiPAP Vision Block Diagram 

1045049 

* 

* 

BiPAP Vision Ventilatory Support System (Continued) 

* 

* 


Figure 3-1 

BiPAP Vision Block Diagram 

* For S/N 106001 and greater

Pneumatics Block Diagram 



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3-5

3-6 


3.2 Power Supply Subsystem (PSS) 

The PSS supplies the Main Control (MC), Pressure Control (PC), and the Display Control (DC) with the 

proper DC supply voltage. Safety features designed into the circuitry include an overvoltage disconnect, 

low voltage supply detect, and line loss detect. Other features include “power-on” indicator voltage, 

circulation fan power, and an On/Off switch connection. 

1045049 

Figure 3-2 

PSS Block Diagram 


3.2.1 Input Range 


The BiPAP Vision can operate with an AC input of 100, 120, 230, or 240 VAC (±10%) depending on the 

model. 

3.2.2 DC Supply 

The output DC supply is fused at 30 amps and delivers between 20.6 VDC and 35 VDC with a maximum 

ripple of 1 vpp (peak-to-peak voltage) to the MC, PC, and DC. 

3.2.3 Overvoltage Disconnect 

The overvoltage disconnect is used to remove the DC supply output when it exceeds 36 VDC and reconnects 

it when the level returns to an acceptable value. 

3.2.4 AC Fail 

The MC module monitors the level of DC supply voltage and the AC voltage output from the transformer 

supply winding to determine if an AC fail condition exists. 

Low DC supply detect – If the DC supply voltage drops to 19.38 VDC or lower (nominal), an AC fail 

condition will be triggered. 

Line loss detect – The AC voltage output from the transformer supply winding is monitored for a loss-ofcycle 

condition. Both legs of the winding are input to the monitoring circuitry. Whenever AC is lost, the 

AC fail signal is activated. 

3.2.5 Outputs 

The PSS module also includes the following: 

a. Front panel “power-on” indicator voltage (J5) 

b. Circulation fan power (J4) 

c. On / Off switch (part of J2) 


Power Supply Subsystem (PSS) (Continued) 

d. Circulation fan current sense information to (J12) on the PC subsystem. 

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3-7

3-8 


3.3 Main Control Subsystem (MC) 

The MC is microcontroller-based and provides overall system control and supervision by monitoring the 

activity of all the other system modules and providing commands to these modules based on user and 

system input. The MC also acts as the bus controller for all subsystem communications using the 

Intermodule Communications Bus (ICB). 

1045049 

* For S/N units >106K 

Figure 3-3 

MC Block Diagram 


* 

J6 

Nurse Call / 

Remote Alarm * J5 

4 

DCS RX / TX 

PAS RX / TX

3.4 Pressure Control Subsystem (PC) 

The PC functions through a microcontroller to: 

a. Communicate with the Main Controller Subsystem (MC) 

b. Communicate to a terminal / PC for diagnostics 


c. Acquire sensor data through an Analog-to-Digital Converters (ADC, A / D) 

d. Control valves and the blower motor through a Digital-to-Analog Converter (DAC) 

e. Respond to or invoke an error signal 

or * 

J15* 

* 

* For Units Serial Number

3-10 


Pressure Control Subsystem (PC) (Continued) 

3.4.1 Microcontroller Interface 

Programmable Array Logic (PAL) memory device decodes the chip selects in such a way that the program 

code is retrieved from the EEPROM and data is retrieved from the RAM. An additional PAL 

provides the interface for the Intermodule Communications Bus (ICB). The microprocessor monitors: 

oxygen and gas temperatures; Airflow Module (AFM) and Oxygen Module (OM) detection; In-Line Flow 

Restrictor (ILFR), Pressure Regulation Valve (PRV), and oxygen valve DAC control voltage; blower DAC 

control voltage; and power supply and reference voltages. 

3.4.2 Blower Motor Drive 

The complete motor controller includes closed loop speed control via analog circuitry. When the desired 

speed and actual speed are known by the processor, the speed is adjusted by increasing or decreasing the 

DAC converter output to achieve proper pressure and flow. 

3.4.3 Pressure Regulation Valve (PRV) and In-Line Flow Restrictor 

(ILFR) Drives 

The valve drives have closed loop control via the microprocessor. The microprocessor reads seven 

pressure, flow, and temperature sensors through the PC hardware, and receives prescription parameters 

from the MC. The microprocessor then adjusts analog DAC voltages to control the PRV and ILFR valves 

as required to meet the prescription. 

3.4.4 Pressure Sensors 

The PC module has two dual pressure sensors (MT1 and MT2) and a single sensor (MT3). They measure 

patient pressure, unit outlet pressure, and barometric pressure. These sensors are subject to calibration 

with their calculated slope and intercept values stored in the on-board EEPROM. MT3 is a backup outlet 

pressure sensor that provides a redundant check of the primary outlet sensor located on the AFM. 

NOTE: Calibration is factory programmed and field adjustment is not required. 

3.4.5 Error Line Control (ELC) Circuit 

The ELC circuit is designed to simply detect a failure from, or signal a failure to, the MC and Display 

Control (DC) modules. If the ELC line activates, only a power On / Off of the ventilator can clear this 

latched circuit state. 

3.4.6 Diagnostics Connector 

The diagnostic connector (J3) interfaces with the microprocessor to view PC functions and system errors 

on units from serial number 100500 to 105999, unless upgraded. For units greater than this, the diagnostic 

connector is on the rear of the unit. 

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3.5 Display Control Subsystem (DC) 


The DC provides a means of displaying the operating mode, measured and calculated operating parameters, 

parameter setpoints, alarm limits, real-time graphics, and general status information. The DC also 

provides the necessary user interface controls to modify the operating mode, parameter set points, alarm 

limits, and graphical scales; and to reset or silence the audible alarm, and freeze or unfreeze graphics. 

The displays and controls are described in more detail in the following subsections. 

* 

or 

* For Units Serial Number < 106K 

* 

Figure 3-5 

DC Block Diagram 


* 

or 

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3-11

3-12 


Display Control (DC) (Continued) 

3.5.1 DC/DC Converter 

The DC/DC converter reduces the +24 VDC bulk supply to a +5 VDC logic level. (S/N

3.5.12 Error LED 


The error LED indicates that an error condition was detected, and it illuminates to make unit diagnosis 

easier. 

3.5.13 Diagnostic Interface 

The diagnostic connector interface (J5) interfaces with the MCU to provide a means for the DC to download 

diagnostic data to a terminal or PC. 

3.5.14 EEPROM 

A serial EEPROM stores the setpoints for the backlighting and contrast and also for the appropriate 

diagnostic data. 

3.5.15 LCD Controller 

The DC circuit contains an LCD controller that interfaces with the display. 

3.5.16 Debouncing / Keypad Matrix 

The matrix keys are debounced and then the microprocessor scans the matrix to determine what key was 

depressed. 

3.5.17 Rotary Encoder Control 

The rotary encoder control circuit detects relative position, direction, and speed of the rotary encoder, all 

within one detent of movement. 

3.5.18 Audible Alarm Activation 

The audible alarm is activated by either an input from the ELC, the power fail circuitry, or the test alarm 

signal from the MCU. It will also occur when the wrong key has been depressed, an adjustable parameter 

has reached its limit, or the error signal has been activated. 

3.5.19 Audible Alarm Current Check 

An internal test is performed to verify the audible alarm current is acceptable. 

3.5.20 “Power-on“ in Safe State 

The DC contains circuitry that causes the hardware to “power-on” in a safe state; which is when the 

backlight is off, the display is off, and the Intermodule Communications Bus (ICB) is terminated. When 

the MCU determines that no Vent Inop error exists, it lets the unit resume operation under normal 

operating conditions. 

3.5.21 Watchdog and Low Voltage Reset 


Display / Control Subsystem (D / CS) (Continued) 

The watchdog function has to be periodically reset by the microprocessor if a time-out period has been 

exceeded. This function is designed to reset the processor if the software gets lost. When a low logic level 

is detected, the ELC will be activated resulting in a system shutdown. 

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3-13

3-14 


3.6 Airflow Module (AFM) 

The AFM is a submodule of the Pressure Control (PC). The AFM receives power from the PC and provides 

the following analog signals to the PAS: 

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a. Gas flow indication 

b. Pressure indication 

c. Temperature indication 

To provide indications accurate enough for system requirements, the AFM must be calibrated. Calibration 

data is stored in a nonvolatile memory that is part of the AFM. The flow, pressure, and temperature 

indications are for the ventilator gas stream flowing through a “flow body” attached to the AFM circuit 

board. 

3.6.1 Flow Body 

The flow body, with laminar flow element, is added to the ventilator gas stream, creating a small pressure 

differential to short a fraction of the flow through the AFM sensor. Inlet, outlet, and pressure ports are 

part of the flow body for tubing attachment to the AFM electronic sensors. Also, a hole is molded into the 

flow body to position the temperature sensor. The body has molded feet for attaching it to the AFM 

circuit board assembly. 

And/Or Oxygen Supply 

Figure 3-6 

AFM Block Diagram 


Airflow Module (AFM) (Continued) 

3.6.2 Analog Reference 


The PC provides the AFM with power in the form of +12 VDC, –12 VDC, analog ground, +5 VDC, and 

digital ground. An analog voltage reference supply is derived from the +12 VDC to power the pressure 

and flow sensors so their bridge outputs can be factory calibrated. 

3.6.3 Flow Indication 

Total gas flow indication is provided by MT1. It is then amplified by an instrumentation amplifier, lowpass 

filtered, and sent to the PC board for conversion. 

3.6.4 Pressure Indication 

MT2, a precision compensated pressure sensor, provides unit outlet pressure indication. The sensor is 

followed by a low-pass filter and a differential amplifier, and then sent to the PC board for conversion. 

3.6.5 Temperature Measurement 

The temperature is measured using a sensor inserted into a molded hole in the flow body. The BiPAP 

Vision requires temperature indication to correct air density and detect an undesirable temperature rise in 

the patient circuit. 

3.6.6 Calibration 

A data acquisition system, operating on a personal computer, is the control platform for AFM calibration 

of temperature, pressure, and flow. Correction factors are derived and stored in the AFM module in an 

EEPROM, with calibration accomplished by balancing the flow transducer bridge with an EEPOT. The 

PAS uses temperature, pressure, and flow to correct for actual operating conditions. Once calibrated, the 

AFM is interchangeable with other AFM assemblies. 

NOTE: Calibration is factory programmed only. 

3.6.7 Module Detection 

The PC must know the AFM is connected, since it is required for normal operation of the ventilator. An 

extra line pulls a PC microcontroller line near zero volts. If the line is above two volts, the AFM is not 

connected, and the PC will transition to the error state. 


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3-15

3-16 


3.7 Oxygen Module (OM) 

The OM is an optional submodule of the Pressure Control (PC). It receives power from the PC and 

provides an analog signal to the PC for oxygen flow indication. To provide indications accurate enough 

for system requirements, the OM must be calibrated. Calibration data is stored in a nonvolatile memory 

that is part of the OM. The flow indication is for the ventilator pure oxygen stream flowing through a flow 

body attached to the OM circuit board. 

1045049 

Figure 3-7 

OM Block Diagram 


PC

3.8 Description of Ventilator Modes 


The BiPAP Vision comes standard with two operating modes: Continuous Positive Airway Pressure 

(CPAP) and Spontaneous/Timed (S/T). A third, optional, Proportional Assist Ventilation/Timed (PAV/ 

T) is also available. 

3.8.1 Continuous Positive Airway Pressure (CPAP) 

CPAP provides a constant pressure level delivered over the complete range of the patient’s spontaneous 

breathing cycle. Pressure is controlled and maintained. Flow is available to meet changing patient 

demands and automatically compensate for leaks. The mode delivers the prescribed level of pressure 

that has been set with the CPAP control (Range: 4 to 20 cm H 2 O). 

3.8.2 Spontaneous/Timed (S/T) 

The S/T mode provides either pressure support during spontaneous breaths or time-triggered, pressurelimited, 

time-cycled machine breaths. 

Spontaneous Breaths 

Two pressure levels are set: an EPAP level (range 4 to 20 cm H 2 O) to establish a baseline pressure and an 

IPAP level (range 4 to 40 cm H 2 O) that determines the amount of pressure support delivered with each 

breath (PS = IPAP– EPAP). During the inspiratory phase, the BiPAP Vision responds as necessary to 

satisfy the patient’s flow requirements while maintaining the preset IPAP pressure. Under these conditions, 

the patient is active in determining inspiratory time and tidal volume. The delivered tidal volume 

will be dependent upon the pressure differential between the IPAP and EPAP levels, patient effort, and 

the combined resistance and compliance of the circuit and the patient. If the patient does not actively 

participate, the BiPAP Vision responds appropriately. 

Timed Breaths 

The S/T mode can also provide a time-triggered, pressure-limited, time-cycled machine breath, when the 

spontaneous respiratory rate drops below the Rate control setting. If the ventilator does not detect a 

spontaneous trigger within the interval determined by the Rate control setting, it will activate a timetriggered 

machine breath and deliver the IPAP level. Machine breaths are not synchronized with patient 

effort, and once triggered to IPAP, the balance of the cycle is determined by the Timed Insp. Control 

setting. A maximum Timed Inspiratory setting of 3.0 seconds can be set, as long as the I:E Ratio does not 

exceed 1:1, as determined by the Rate setting. For example, see Figure 3-12. If the Rate control is set at 10 

BPM, the total respiratory cycle is six seconds. If a spontaneous trigger occurs before the six-second cycle 

time has elapsed, a spontaneously-triggered, pressure support breath occurs, a timed trigger will not 

occur, and the timer is reset for a new six second interval. If a six second interval passes without a 

spontaneous trigger, a timed trigger will be initiated and IPAP will be delivered for the duration of time 

set by the Timed Inspiration setting. 


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3-17

3-18 


Description of Ventilator Modes (Continued) 

1045049 

Figure 3-12 

Timed Breath Example 

3.8.3 Proportional Assist Ventilation / Timed Mode (PAV/T) 

For a detailed description of functioning of the Proportional Assist Ventilation/Timed (PAV/T) Mode, 

refer to the appropriate BiPAP Vision Clinical manual. This mode utilizes the design features of S/T 

mode and is a software enhancement only. 



3.9 Nurse Call/Remote Alarm Feature Operation (for s/n units 

greater than 106000 only) 

The unit will activate a remote signal for system shutdowns, patient alarms, and Loss of AC Power conditions 

which inhibit therapy. Note that a Check Vent condition does not activate the nurse call signal. The 

nurse call signal can be silenced via the Alarm Silence key for the same amount of time that the audible 

alarm on the Vision is silenced (two minutes). The signal can also be cleared by selection of the Alarm 

Reset key. The nurse call signal will automatically terminate when a patient alarm self-cancels. 

The Nurse Call/Remote Alarm feature is meant to be a backup with the main Vision alarm system being 

the primary alarm/alert mechanism. 

The Nurse Call or Remote Alarm signal is generated on the MC board and then can be connected to a 

hospital nursing station. This signal is opto-isolated and used to switch a relay to provide open or closed 

contacts to the remote station circuit. The arrangement of the two jumpers (JP1 and JP2) on the MC determine 

the output configuration that is utilized by a common connector on the rear panel of the Vision. 

The Nurse Call Adapter (RI P/N 1014280) along with the Nurse Call Cable (RI P/N 1003742) can be used 

to connect the Vision to a Nurse Call station. 

The jumper configuration on the MC circuit board can be selected to meet requirements according to the 

following table. Refer to the photo for jumper location. 

Option JP1 JP2 No Alarm Output Alarm Option System Requiring 

1 2,3 2,3 51.1K Open Respironics Remote Alarm 

2 2,3 1,2 Closed Open Central Alarm System 

3 1,2 1,2 Open Closed Central Alarm System 

NOTE: Option 2 is the original factory set configuration for S/N 106001 to 106368. 

Option 3 is the original factory set configuration for S/N 106369 and greater. 

JP 2 


JP1 

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3-19

3-20 


Nurse Call / Remote Alarm (Continued) 

Details of option selections: 

Option 1: 

For use with Respironics Remote Alarm ( RI p/n 34003, or equivalent). 

Option 2: 

For use with alarm systems requiring NORMALLY OPEN contacts for an “alarm” condition and CLOSED contacts 

for a “no alarm” condition. 

Option 3: 

For use with alarm systems requiring NORMALLY CLOSED contacts for an “alarm” condition and OPEN contacts 

for a “no alarm” condition. 

Caution: The Vision Nurse Call/Remote Alarm port shall be connected to nurse call systems that meet the relevant 

local safety standards. Secondly, the nurse call port shall be connected to a low voltage circuit (less or 

equal to 42.4V peak ac or 50V dc). The leakage currents from the low voltage circuit shall not cause the 

Vision leakage currents to exceed acceptable levels. Lastly, the rated output current of the low voltage 

circuit shall not exceed 1A. 

1045049 



3.10 BiPAP Vision Patient Disconnect Alarm Description of 

Operation 

The patient disconnect alarm (“Disconnect”) is based on the flow limit control algorithm in the Vision. The mitigation 

for the Disconnect alarm is to put the unit into flow limit control. This same action is done when the user selects 

the Standby key. 

3.10.1 Detection 

The unit determines that a patient is not connected to the circuit anymore based on flow for the given pressure. This 

is implemented via a look-up table, with a flow entry for every generated pressure. The range of flows is 95 to 180 

LPM, with 180 LPM being the low limit for any pressure above 9 cmH 2 O. If the unit detects flow greater than the 

threshold at any given pressure for more than 10 seconds (3 seconds in for software earlier than 13.2), the unit puts 

itself into the Flow Limit Control state. In this state, the unit attempts to limit the flow coming out of the mask in 

order to make putting the mask back on the patient easier and more comfortable for the patient. 

Also, for safety concerns, the oxygen valve closes to discontinue oxygen delivery during this condition. 

When the Standby key is selected by the user, the unit automatically enters the FLC state, regardless of the flow at 

the time the Standby key is selected. 

In order to limit the flow, the unit drops the pressure to 4 cmH 2 O. The algorithm was enhanced to work with the Full 

Face Mask a while ago. The Full Face Mask has a flap that will close the patient circuit and open the mask to 

atmosphere upon loss of flow and pressure. This flap must be kept in a position during FLC so that the patient 

circuit is not occluded. This allows the unit to detect when the patient is reconnected. The enhancement to the 

algorithm consists of the pressure being slowly increased to keep the flow at 160-170 LPM. The pressure level is 

limited to 10 cmH 2 O for software 11.2 and 11.3 (15 cmH 2 O for software 11.3a and higher), regardless of how much 

flow is being generated. Therefore, the unit will either output 160-170 LPM at some pressure or will be limited to 

some lesser flow at 10 cmH 2 O for software 11.2 and 11.3 (15 cmH 2 O for software 11.3a and higher). 

3.10.2 Termination 

There are two termination stages to FLC. During the first stage, as the pressure is being increased from 4 cmH 2 O to 

its maximum of 10 cmH 2 O for software 11.2 and 11.3 (15 cmH 2 O for software 11.3a and higher), FLC will be 

automatically terminated if the unit detects negative flow (i.e., the patient breaths back into the unit). This pressure 

increase takes about 10 – 12 seconds for software versions earlier than 13.2, depending on how soon the flow set 

point is reached. There have been two enhancements in software version 13.2 in this area. The first is that the 

pressure is increased faster (1 cmH 2 O per 40 ms instead of the previous ¼ cmH 2 O per 40 ms) to shorten the amount 

of time in stage one. The second change concerns the flow range processing. In software versions earlier than 13.2, 

when the pressure is dropped to 4 cmH 2 O and the flow is greater than the desired flow range (160-170 LPM), the 

flow limit algorithm attempts to decrement the pressure to get the flow into that desired range. In software version 

13.2, that was changed to immediately enter stage 2 under that condition. 


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3-21

3-22 


Once either the flow set point or the maximum pressure is reached, the unit will automatically terminate 

FLC for either the detection of negative flow or if flow varies from the current flow by more than 40 LPM 

in software versions prior to 13.2 and 20 LPM for software version 13.2. For instance, if the 160-170 LPM 

set point has been reached, the unit will terminate FLC if the flow drops below 120 LPM or goes above 

210 LPM in older software and 140-190 LPM in the new software. 

If the flow set point has not been reached, the current flow at 10 cmH2O for software 11.3 and 11.3 (15 

cmH 2 O for software 11.3a and higher) is used as the set point. For instance, if only 80 LPM can be 

reached at 10 cmH 2 O for software 11.3 and 11.3 (15 cmH 2 O for software 11.3a and higher), the thresholds 

for automatic termination of FLC will be 40 LPM and 120 LPM in older software and 60-100 LPM in new 

software. 

This allows FLC to be terminated without the patient necessarily breathing back into the machine but by 

the simple act of refitting the mask to the patient. 

The Standby condition, besides being terminated automatically by the above methods, can also be 

manually terminated by reselecting the highlighted Standby soft key on the Monitoring screen. 

When FLC is terminated during a “Disconnect” alarm period, the alarm is self-cancelled. That means 

that the audible component of the alarm is silenced but the visual component of the alarm remains 

displayed on the screen. That can be cleared by selecting the Alarm Reset key. 

1045049 

Note: During FLC, the oxygen parameter setting reduces to 21%, regardless of the setting. 


Chapter 4: Specifications and 

Control Ranges 

Chapter 4: Specifications and Control Ranges 4-1 

4.1 Specifications ............................................................................... 4-2 

4.2 Control Ranges and Increments .............................................. 4-5 


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4-2 

Chapter 4: Specifications and Control Ranges 


4.1 Specifications 

ENVIRONMENTAL: 

Temperature ....................................... Operating: 40° F to 104° F (4.4° C to 40° C) 

Transport / Storage: –4° F to 140°F (–20 o C to 60 o C) 

Humidity ............................................ Storage and Operating: 0 to 95% Relative Humidity 

PHYSICAL: 

Dimensions ........................................ At the base: 16" (L) × 14 3 /8" (W) × 10 5 /8" (H) 

(40.6 cm x 36.5 cm x 27cm) 

Weight ................................................ 34 lbs (15.4 kg) 

ELECTRICAL: 

AC Input Voltage (VAC) ................. 100/120/230/ 240 VAC 

Single Phase 

±10% 

Fuses ................................................... 100 – 120 VAC ~ T 3.5 A, 5 × 20 mm, Time Lag (×2) 

(For serial no.’s 100500 and higher – 

Respironics Reorder # 1000749) 

Power Consumption ........................ 300 VA max. 

AC Current ........................................ 3.0 A maximum 

AC Frequency.................................... 50/60 Hz 

1045049 

115 VAC ~ T 3.0 A, 250 V, ¼” × 1¼” 

(For serial no.’s 100499 and lower – 

Respironics Recorder # 582100) 

220 VAC, 230 VAC and 240 VAC ~ T 1.6 A, 250 V, 5 × 20 mm 

(For all serial no.’s – Respironics Recorder # 1000750) 

Class ................................................... Protection Against Electrical Shock: Class I 


Specifications (Continued) 


Type .................................................... BF 

Degree of Protection Against Harmful Ingress of Water: 

Ordinary Equipment, IPX0 

Electromagnetic 

Compatibility ..................................... The BiPAP Vision meets the requirements of IEC 601-1-2 

Earth Resistance ................................ Less than 0.10 ohms 

Earth Leakage Current ...................... 

Normal Pole, No Earth, L2 ........ Less than 300 µA 

Reverse Pole, No Earth, L2 ........ Less than 300 µA 

Reverse Pole, No Earth, No L2.. Less than 1000 µA 

Normal Pole, No Earth, No L2 .. Less than 1000 µA 

Insulation Resistance ........................ Greater than 2 megaohms 

Noise Level ......................................... No specification is given because various test instruments, test 

procedures, and unit operating conditions produce varying 

results. 

Alarm Sound Level ........................... Between 70 and 85 dBA peak at a distance of 1 meter. 

PRESSURE: 

Output ................................................. 4 to 40 cm H 2 O 

Dynamic Regulation .......................... ± 2 cm H 2 O at sinusoidal flow @ ± 100 L/min 

Static Regulation ................................ ± 2 cm H 2 O from –60 to 120 L/min 

Elevation.............................................. 0 to 5000 ft above sea level 

CONTROL ACCURACY: 

Timed Inspiration .............................. ± 0.2 sec of the set point 

Rate ...................................................... ± 1 BPM of the set point 

Oxygen Concentration ....................... The greater of ± 3% or ±10% of the set point 

DISPLAY ACCURACY: 

Pressure ............................................... ± 1 cm H 2 O 

Volume ................................................ ± 10% (during stable conditions) 

Flow ..................................................... ± 10% (during stable conditions) 


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4-4 


Specifications (Continued) 

TRIGGER SENSITIVITY: 

(Refer to BiPAP Vision Clinical Manual Auto-Trak section for more details) 

Spontaneous Trigger ......................... Shape Trigger 

Volume 6 cc above 

Spontaneous Cycle ............................ Spontaneous Expiratory Threshold (SET) 

Shape Cycle 

IPAP maximum of 3.0 sec 

Flow Reversal 

OXYGEN MODULE INLET: 

Pressure Range .................................. 50 to 100 psig 

Inlet Fitting ......................................... DISS male oxygen connector 

INTERNAL BATTERIES: 

Alarm Battery ..................................... NiCAD 

Location: D/C 

3.6 VDC, 110 mAh 

Rechargeable (See Section 5.9.3 for details) 

(RI P/N 1012819) 

Data Retention Battery Type: Lithium Cell 

(for original MCS board) 

Location: MCS 

+3 VDC, 300 mAh 

Not Rechargeable 

(RI P/N 1001988) 

Data Retention Battery Type: Lithium Cell 

(for current MC Board ) Location: MCS 

+3 VDC, 300 mAh 

Not Rechargeable 

(RI P/N 1006005) 

1045049 

V leak 


4.2 Control Ranges and Increments 


NOTE: Refer to the applicable BiPAP Vision Clinical Manual for PAV/T information. 

4.2.1 Parameters 

*With optional Oxygen Module 

4.2.2 Alarms (Adjustable) 

Alarm Control Control 

Range Increments 

High Pressure 5 to 50 cm H 2 0 1 cm H 2 0 

Low Pressure Disabled to 40 cm H 2 0 1 cm H 2 0 

Low Pressure Delay 0 to 60 sec. 1 cm H 2 0 

*With optional Alarm Module 

Apnea Disabled; 20 to 40 sec. 4 set points; 

Disabled, 20, 30, 40 sec. 

Low Minute Disabled to 99 L/min. 1 L/min. 

Ventilation* 

High Rate* 4 to 120 BPM 1 BPM 

Low Rate* 4 to 120 BPM 1 BPM 


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4-6 


Control Ranges and Increments (Continued) 

4.2.3 Display Ranges & Increments 

1045049 

PARAMETER DISPLAY DISPLAY 

RANGE RESOLUTION 

IPAP 0 TO 50 CM H 2 O 1 CM H 2 O 

EPAP 0 TO 50 CM H 2 O 1 CM H 2 O 

CPAP 0 TO 50 CM H 2 O 1 CM H 2 O 

RATE 0 TO 150 BPM 1 BPM 

EXHALED TIDAL 0 TO 4000 ML 1 ML 

VOLUME (VT) 

MINUTE VENTILATION 0 TO 99 L /MIN 1 L / MIN 

(MIN VENT) 

TOTAL LEAK (TOT LEAK) 0 TO 300 L/MIN 1 L / MIN 

PATIENT LEAK 0 TO 300 L /MIN 1 L /MIN 

(PT. LEAK) 

PEAK INSPIRATORY 0 TO 50 CM H 2 O 1 CM H 2 O 

PRESSURE (PIP) 

PERCENT OF PATIENT 0 TO 100% 1% 

TRIGGERED BREATHS 

(PT.TRIG) 

TI/TTOT 0 TO 100% 1% 


Chapter 5: Routine Maintenance 


Chapter 5: Routine Maintenance 5-1 

5.1 Cleaning the BiPAP Vision ....................................................... 5-2 

5.2 Replacing the Inlet Filter........................................................... 5-3 

5.3 Cleaning / Replacing the Nylon Mesh Inlet Filter .............. 5-4 

5.4 Replacing the Oxygen Regulator Filter ................................. 5-6 

5.5 Changing the System Fuses...................................................... 5-8 

5.6 Voltage Selection ....................................................................... 5-10 

5.7 Power Cord Inspection ............................................................5-10 

5.8 Internal Alarm Battery ............................................................ 5-11 

5.9 Preventive Maintenance Schedule ........................................5-14 

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5-2 


5.1 Cleaning the BiPAP Vision 

CAUTION: Do not immerse the BiPAP Vision in water or allow any liquid to enter the cabinet or 

the inlet filter. 

NOTE: The following guidelines for cleaning refer to the BiPAP Vision only. Refer to the 

individual instructions for cleaning accessories. 

5.1.1 Cleaning the Front Panel 

Clean the front panel as needed by wiping with water or 70% isopropyl alcohol only. 

5.1.2 Cleaning the Enclosure 

Clean the exterior of the enclosure as needed by wiping with any anti-bacterial agent. 

CAUTION: Do not allow any liquid to enter the cabinet or the inlet filter. 

NOTE: Do not clean the Auto-Trak sticker with anything except mild soap and water. 

1045049 


5.2 Replacing the Inlet Filter 



CAUTION: A dirty inlet filter may cause high operating temperatures, and may affect ventilator 

performance. Examine the inlet filter for integrity and cleanliness before each use, and 

as required during operation. 

Step 1 Turn the BiPAP Vision OFF and unplug the electrical cord from the wall outlet and from the 

back of the unit. 

Removing the Filter 

Step 2 Remove the inlet filter cap by pinching the latch, then rotate the cap until the hinge is 

free from its slot. 

NOTE: The inlet filter is disposable. Do not attempt to clean the inlet filter. When the filter is 

dirty replace it with a new filter. Use only Respironics filters; see Chapter 7 for 

the filter reorder number. 

(P/N 582101 x6) 

Installing the Filter 

Figure 5-1 

Removing the Filter Cap 

(P/N 1003444) 

Step 3 Place the filter inside the cap, then reverse Step 2 to reinstall the filter cap. 

NOTE: To clean any of the accessories, refer to each accessory’s instruction sheet. 

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5-4 


5.3 Cleaning/Replacing the Nylon Mesh Inlet Filter 

CAUTION: A dirty nylon mesh inlet filter may cause high operating temperatures 

and may affect ventilator performance. 

Step 1 Turn the BiPAP Vision off and unplug the electrical cord from the wall outlet and 

from the back of the unit. 

Step 2 Remove the filter cap and inlet filter. (See Section 5.2 for more detailed instructions on 

removing the filter cap and inlet filter.) 

Step 3 Using a medium Phillips screwdriver, remove the two screws that secure the nylon mesh 

inlet filter to the filter enclosure. Remove the nylon mesh inlet filter. 

1045049 

Figure 5-2 

Removing the Nylon Mesh Filter 

NOTE: Depending on the condition of the nylon mesh inlet filter, it may be cleaned and 

reused. If the filter is in good shape, follow the cleaning instructions in Step 4. If the 

filter must be replaced, proceed to Step 5. 

NOTE: If the nylon mesh inlet filter is to be cleaned, care should be taken to protect the 

adhesive on the edges of the filter. If the adhesive is damaged, the filter may not 

correctly seal when reinstalled. 




Cleaning / Replacing the Nylon Mesh Inlet Filter (Continued) 

Step 4 Using a solution of mild soap and water, carefully clean then thoroughly rinse the nylon 

mesh inlet filter. Insure that the filter is completely dry before reinstalling it in the unit. 

Step 5 If necessary, remove the protective backing from the nylon mesh inlet filter. Align the new 

cleaned nylon mesh inlet filter with the filter enclosure. Press the edges of the filter firmly in 

place. Secure the filter to the filter enclosure using the two Phillips screws. 

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5-6 


5.4 Replacing the Oxygen Regulator Filter 

CAUTION: A dirty Oxygen Regulator filter may reduce system performance. Examine the filter 

for integrity and cleanliness before each use. 

NOTE: Replace the filter as necessary to ensure normal operation. 

Step 1 Position the BiPAP Vision so that the back is easily accessible. 

Step 2 Disconnect the Oxygen Module (OM) input line. 

Step 3 Firmly grasp the plastic body of the regulator bowl and rotate it counterclockwise to 

remove it. (Direction is referenced from the bottom of the unit.) 

NOTE: The regulator bowl has a standard right-hand thread. 

(shown is for original Oxygen Module) 

Step 4 Remove the original filter. 

1045049 

Figure 5-3 

Removing the OM Regulator Bowl 


Step 5 Insert the new filter. 

Figure 5-4 

Removing the OM Filter 



Step 6 If necessary, clean the regulator bowl with mild soap and water and dry completely. 

Step 7 Put the regulator bowl in place and rotate it clockwise until securely tightened. 

Step 8 Connect the oxygen input line to the OM. 

Replacing the Oxygen Regulator Filter (Continued) 

(shown is for original Oxygen Module) 

BiPAP Vision Oxygen Module Regulator Filter and Regulator Bowl Compatibility 

Note: Refer to the information below for compatibility when ordering Oxygen bowl and filter 

replacements. 

Oxygen Module (OM) Manifold / Regulator Bowl For Oxygen Module S/N < 300000, use part 

number 582154 

For Oxygen Module S/N > 299999, use part 

number 1007546* 

Oxygen Module (OM) Manifold / Regulator Bowl filter (x5) 

For Oxygen Module S/N < 300000, use part 

number 582153 

For Oxygen Module S/N > 299999, use part 

number 1007547* 

* This part is also for the Oxygen Modules that do not have a serial number on the Oxygen Module 

cover. 

1045049

5-8 


5.5 Changing the System Fuses 

WARNING: Unplug the BiPAP Vision before changing the fuses. 

NOTE: This procedure applies to Vision S/N’s 100500 and greater. 

Step 1 Unplug the AC power cord from the wall outlet and from the power entry module on the 

rear of the BiPAP Vision. 

Step 2 With a small, flat-blade screwdriver, gently pry open the fuse holder door from the top. The 

door hinges downward. 

Step 3 Pry the fuse drawers loose and slide them out of the power entry module. 

Step 4 Pull the fuses out of the fuse drawers. 

1045049 

Figure 5-5 

Opening the Fuse Door 


Step 5 Replace both fuses. 

Figure 5-6 

Replacing the Fuses 



Step 6 Place the new fuses in the fuse drawers and slide the fuse drawers back into the power entry 

module with the arrows on the front of the drawers pointing to the right. 

Step 7 Select the proper operating voltage by removing the drum and reinserting it with the 

desired voltage displayed. 

NOTE: Use only Respironics approved fuses. See Section 5.6 for fuse part numbers. 

Step 8 Swing the fuse drawer door shut and snap it into place. 

Changing the System Fuses / Operating Voltage Selection (Continued) 

Step 9 Plug the AC power cord into the BiPAP Vision and the wall outlet. 

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5-10 


5.6 Voltage and Fuse Selection 

The voltage selection is originally set at the factory. If you wish to use the BiPAP Vision with a different 

operating voltage, refer to Section 5.5. 

NOTE 1: Vision S / N’s 100500 and greater: 

For operating voltages of 100 and 120 VAC, use RI P/N 1000749 fuses. 

For operating voltages of 230 and 240 VAC, use RI P/N 1000750 fuses. 

NOTE 2: Visions S / N’s 100499 and less: 

For operating voltage of 115 VAC, use RI P/N 582100 fuses. 

For operating voltage of 220 and 240 VAC, use RI P/N 1000750 fuses. 

5.7 Power Cord Inspection 

Inspect the power cord and replace if damaged or shows signs of wear. 

1045049 


5.8 Internal Alarm Battery 

5.8.1 Battery Function 



The BiPAP Vision contains an internal NiCAD battery located on the DC (P/N 1012819) to activate the 

Ventilator Inoperative visual and audible alarm indicators if an error occurs. A fully charged battery can 

maintain the audible alarm for up to 20 minutes. 

5.8.2 Low Battery Condition 

The NiCAD battery can lose its charge if the BiPAP Vision is not used for an extended time. In a typical 

environment, a fully charged battery can be stored approximately six months before losing its charge, but 

the discharge rate depends heavily on temperature. 

NOTE: The BiPAP Vision internal alarm battery should be charged prior to use if it has been 

stored for longer than three months. 

If the battery voltage is too low to support the alarm indicators, the Check Ventilator visual (Eye icon) and 

audible alarm indicators will activate. The time that the audible alarm operates may be short due to the 

low voltage of the battery. The BiPAP Vision also generates error code 205. 

To check the error code: 

Step 1 Silence the audible alarm component by pressing the Alarm Reset key. 

The audible component will not sound again. 

Step 2 Press the Monitoring hard key if you are not already in the Monitoring screen. 

Step 3 Press the Options soft key. 

Step 4 In the Options screen, press the Error soft key. 

Check vent error codes are displayed in the top line of the Options/Message area. 

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5-12 


Internal Alarm Battery Maintenance (Continued) 

5.8.3 Charging the Internal Battery 

There are two methods used to recharge the NiCAD battery on the DCS circuit board that is used to sound the 

audible alarm, fast charge and normal. 

1. Fast Charge Method (Check Vent/Error 205 Being Displayed) 

A fast charge will be initiated at first time initialization and when a low internal battery error is detected. Fast charging 

is available when the unit is in the Setup Screen and when it is providing therapy (i.e., the unit can sit in the diagnostic 

mode and still fast charge). Fast charge time is 6 hours to sufficiently charge the battery to support the audible 

alarm for 20 minutes. 

If the unit is powered off during a fast charge sequence, the sequence will pick up where it left off when the unit is 

powered back on unless a low battery error is detected during the start-up testing (i.e., the unit was off long enough 

to discharge the battery). In that case, a new 6-hour fast charge sequence will be initiated. The functionality of the 

Check Ventilator error 205 remains unchanged - the error code will be able to be cleared approximately 1 minute after 

the status indicates a good battery. 

Note: If the status never indicates a good battery (i.e., the battery is actually bad and will not take a charge), 

the fast charge sequence will run continuously. The user will be able to detect this by not being able to 

clear the 205 error even after a full fast charge cycle. 

Charging Process: 

1. Remove the unit from patient use. 

2. Plug the unit into an AC source and start the unit. The Self Diagnostics will begin. 

3. Allow the unit to remain in the Exhalation Port/Language Screen. 

4. Or, allow the unit to be in therapy or Standby mode. Press the alarm reset to silence the audible alarm. 

5. Leave in one of these conditions for approximately 6 hours to fully charge the battery. 

2. Normal Method (No Check Vent/Error 205) 

If there is no Check Vent error 205, the charging circuit will continue to charge the battery on a regular basis while in 

the Test Exhalation/Language screen or during therapy use. It will take approximately 24 hours to fully charge the 

battery to support the audible alarm for up to twenty minutes. 

Charging Process: 

1. Remove the unit from patient use. 

2. Plug the unit into an AC source and start the unit. The Self Diagnostics will begin. 

3. Allow the unit to remain in the Exhalation Port/Language selection screen. 

4. Or, allow the unit to be in therapy or Standby mode. 

5. Leave in one of these conditions for approximately 24 hours to fully charge the battery. 

1045049 


Charging Verification: 



1. A minimum of two hours is required to charge a fully discharged battery to a voltage at which the alarm will 

not be activated. At this time, the unit can be operated and will continue to trickle charge the battery while it is 

in operation. 

2. Press Monitoring to begin operation. 

3. Wait two minutes to determine if the Check Vent alarm activates with an error 205 in the Error Message screen. 

If not, then the unit is ready for use. 

CAUTION: Prolonged storage of the BiPAP Vision at high temperatures, above 80 ºF (27 ºC) can 

result in premature battery failure. Failure to recharge a battery when it is being stored for 

long periods will cause a loss of battery life, activate the Check Ventilator alarm, and 

generate error code 205. 

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5-14 


5.9 Preventive Maintenance Schedule 

The Maintenance Schedule lists the items that are recommended to be periodically inspected or tested. The 

service interval may be decreased as internal protocol specifies. The user should be aware of any local or 

national regulations that may deviate from the schedule as described below. Use the log to record the dates 

the maintenance items are performed. 

5.9.1 Vision Preventive Maintenance Schedule (Factory Recommended) 

Model # ______________ Serial # ______________ 

Maintenance Item Verification Reference Service Interval Date 

Record hours of Displayed on Options 1 Year 

operation Screen 

Replace inlet filter Section 5.2 As required 

Replace oxygen Section 5.4 As required 

regulator filter 

Audible Alarm Visual, verify by activating 1 Year 

Test Alarms. 

Run Blower Valve Section 8.5 

Calibration 

Perform “System Section 8.8 

Final Test” 

Inspect Power 

Cord 

1045049 

1 Year 

1 Year 

Section 5.7 As required 

Cleaning Section 5.1 As required 

Tested by: ________________________________ Date: _______________ 


Chapter 6: Troubleshooting 



6.1 Overview ..................................................................................... 6-2 

6.2 Description of System Alarms ................................................. 6-5 

6.3 Alarm Indicators ........................................................................ 6-7 

6.4 Troubleshooting .......................................................................... 6-8 

6.5 Check Vent Error Codes ..........................................................6-12 

6.6 Vent Inop Errors........................................................................6-14 

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6-1

6-2 



6.1 Overview 

Purpose 

This chapter outlines a general procedure for troubleshooting the BiPAP Vision. Problems shall be investigated 

to the major component or subassembly as indicated on the specific error code charts found in this 

chapter. 

Process 

Step 1 If a Patient Alarm activates and it is not possible to eliminate it, refer to the Alarm 

Descriptions beginning on page 6-8 for detailed descriptions, possible causes, and corrective 

action. 

Step 2 If the Check Ventilator icon illuminates along with the audible alarm, refer to the Check 

Vent Error Flow Chart on page 6-12 for the recommended troubleshooting sequence to 

follow. Refer to the “Check Vent” Error Codes chart on page 6-13 for descriptions and 

possible corrective actions. 

Step 3 If the Ventilator Inoperative icon illuminates along with the audible alarm, refer to the Vent 

Inop Errors Flow Charts on pages 6-14 and 6-15 for the recommended troubleshooting 

sequence to follow. Refer to the Common System (page 6-16), PC Specific (page 6-18), MC 

Specific (page 6-22), and the DC Specific (page 6-24) Error Codes Charts for descriptions and 

possible corrective actions. 

Step 4 Use the chart on page 6-3 to diagnose Common System Level Problems. 

Step 5 Use the “Error Codes Chart Abbreviation Definitions” on pages 6-25 and 6-26 for the 

definition of terms used throughout all of the Error Code Charts. 

Step 6 Follow the PC/Laptop Setup Procedures in section 8.9 for the suggested method to check 

the error code for each subsystem. The procedure includes PC/Laptop setup guidelines. 

1045049 


Common System Level Problems 

Corrective Action 

Possible Cause 

Symptom 

Inspect power cord insertion or damage, replace. 

Inspect fuses, replace if blown. 

Replace PSS. 

Continuity test switch, replace. 

Replace AC Inlet. 

Replace transformer. 

The unit will not power on. 

Power cord 

Fuses 

PSS 

Main power switch 

AC Inlet 

Transformer 

Verify proper input voltage setting. 

Inspect power cord insertion or damage, replace. 

Continuity test, replace. 

Remove top cover, verify all wiring connections are 

properly inserted. 

Power cord 

Main power switch 

Loose connections 

Intermittent On / Off condition. 

Main Power indicator blinks 

sporadically. 

Replace the LCD. 

LCD 

Display blank, power On. 

Replace the DC. 

DC 



Replace if failed. 

Fuses 

Disconnect transformer from the PSS, if fuses still 

failing, replace the transformer. 

Fuses failing. 

Transformer 

If the fuses and transformer are operational, replace the 

PSS. 

PSS 

1045049 

6-3

6-4 

Common System Level Problems 


1045049 

Possible Cause Corrective Action 

Symptom 

Reduce ambient temperature, re-locate unit. 

Replace the inlet filter (See Chapter 5). 

High ambient temperature 

Inlet filter 

Blower 

Transformer 

PC 

Outlet air temperature too 

warm. 

Perform the Blower / Valve Calibration Procedure 

(See Section 8.5). 

Replace PC. 

Replace the ILFR. 

Replace the PRV. 

Replace the Blower. 

Check Connections 

Replace touch pad. 

Replace DC. 

Replace rotary encoder. 

Replace DC. 

PC 

ILFR 

PRV 

Blower 

Noise 

Touch pad 

DC 

Touch pad not responding to 

selection. 

Rotary encoder 

DC 

Rotary encoder does not adjust 

selection. 


See Section 6.3. 

Ventilator Inoperative icon 

(wrench) illuminated, and the 

audible alarm. 

See Section 6.3. 

Check Ventilator icon (eye) 

illuminated, and the audible 

alarm.

6.2 Description of System Alarms 



The BiPAP Vision incorporates self-diagnostic testing capabilities and a number of safety features. All 

system internal functions are checked automatically at start up and periodically throughout operation. The 

microprocessors continuously obtain readings from internal sensors to monitor machine functions and 

operating conditions. Device malfunctions or abnormal operating conditions are analyzed and reported 

according to the level of severity. Two primary alarm functions, Check Ventilator and Ventilator Inoperative, 

are available to identify a system malfunction. Patient Alarms are displayed on screen when activated. 

6.2.1 Patient Alarm Indications 

All alarms contain an audible and visual element. In the event of an alarm condition, the audible alarm 

sounds and the screen changes to show the alarm condition in the Mode/Message Area. See Figure 6-1. 

CPAP 

15 

cm H 2O 

Rate 

5 

Visual 

alarm 

indication 

BPM 

20 

10 

1500 

1000 

500 

100 

-100 

P (cm H2O) ALARM 

Hi P 

Flashing 

"ALARM" 

PS = cm 9 H2O 

1 2 3 4 5 6 7 8 9 

Vol (ml) 

1 2 3 4 5 6 7 8 9 

Flow (L/min) 

1 2 3 4 5 6 7 8 9 

VT 700 ml MinVent 14 L/min 

PIP 15 cm H O 

2 

set 

%O 2 

Options 

Figure 6-1 

Patient Alarm Shown in Mode / Message Area 

55 

% 

1045049 

6-5

6-6 


Description of System Alarms (Continued) 

6.2.2 Patient Alarm Silence and Reset 

The audible indicator of most alarms is self-cancellable if the patient alarm condition is corrected. The user 

can silence the audible indicator by pressing the ALARM SILENCE hard key. The ALARM SILENCE hard 

key turns off the audible alarm for two minutes. Additional pressing of the ALARM SILENCE hard key has 

no effect on the alarm. When the alarm silence is active, the message “Alarm Silenced” appears in the 

Mode / Message Area for the duration of the silence period. Any new alarm condition that occurs, except 

for an Apnea alarm, during the silence period will provide a visual alert, but will not trigger the audible 

alarm. 

The visual patient alarm indicator in the Mode / Message Area is cancelled only when the ALARM RESET 

hard key is pressed. The ALARM RESET hard key cancels the alarm silence period and resets the visual 

indicators. The alarm immediately reactivates if the condition causing the alarm has not been corrected. 

1045049 


6.3 Alarm Indicators 

6.3.1 Vision Ventilator Inoperative Indicator 

6.3.2 Check Ventilator Indicator 



Purpose: Alerts the user to a machine malfunction by 

illuminating the red “Wrench” icon on the display 

panel and activating an audible alarm. The ventilator 

immediately powers down and opens the internal 

valves allowing ambient air to be drawn through the 

ventilator for unimpeded spontaneous breathing. The 

audible and visual alerts remain active and cannot be 

silenced until the On / Off Switch is placed in the 

OFF position. 

Active: At all times. 

Purpose: Alerts the user of a potential abnormal operating 

condition by illuminating the yellow “Eye” icon on the 

display panel and activating an audible alarm. The 

audible alarm can be temporarily silenced with the 

ALARM SILENCE hard key. However, the visual 

indicator cannot be reset and remains illuminated until 

the error is corrected. The ventilator continues to 

operate during a “Check Ventilator” condition. 

Active: At all times. 

1045049 

6-7

6-8 


6.4 Troubleshooting 

1045049 

Alarm Meaning Description Possible Cause Corrective 

Display Action 

Refer to the Vent Inop 

Troubleshooting Flow 

Charts on pages 6-14 

and 6-15 for diagnostic 

information. 

System level failure that 

impairs performance of 

the unit. 

System Failure – A system malfunction 

that results in machine shutdown. The system 

valves open to the atmosphere to permit 

unimpeded spontaneous breathing through the 

system. Audible and visual indicators are 

activated; once activated, the audible alarm 

cannot be silenced. 

Ventilator 

Inoperative 

Verify input power. 

Check fuses. 

AC power failure 

Replace Transformer. 

Temperature overload fuse 

activated (Non-resetable). 

Replace PSS. 

No bulk supply voltage. 

AC Power Failure – Power to the device is lost 

while the power switch is in the Start position. 

The system valves open to the atmosphere to 

permit unimpeded spontaneous breathing 

through the system. Audible and visual indicators 

are activated; once activated, the audible 

alarm cannot be silenced. 

Audible and visual indicators are activated. A 

system error has occurred. The Vision ventilator 

continues to operate. 


Refer to the Check Vent 

Error Troubleshooting 

Chart on page 6-12 for 

diagnostic information. 

System error. 

Check Ventilator 

Hi P Audible and visual indicator in proximal airway Improper Alarm setting; Review high pressure 

pressure setting exceeds the high pressure setting alarm limit set below set alarm setting. 

for more than 0.5 seconds. The inspiration is pressure. 

terminated. Audible alarm indication cancels if 

the subsequent breath is below the high pressure Patient coughing during Observe patient. 

setting. 

inspiratory cycle. 

High Pressure

Troubleshooting Chart 

Check circuit and 

patient connection. 

Patient disconnect or large 

leak. 

Low Pressure Audible and visual alarm indicators if the 

proximal airway pressure remains below 

the low pressure setting for the time set 

with the Low Pressure Delay control. The 

audible alarm indicator cancels if the 

pressure rises above the low pressure 

setting. 

Lo P 

Check the patient 

circuit for obstructions. 

Check inlet filter. 

Patient inspiratory demand 

exceeds machine-delivered 

flow. 

Review Low Pressure Alarm 

Delay setting. 

Low Pressure Delay set 

incorrectly. 

Review Low Pressure alarm 

setting. 

Improper alarm setting; alarm 

limit set above set pressure. 

Reevaluate the patient 

and check the patient 

circuit. 

Patient not breathing or 

unable to trigger ventilator. 


and alarm setting. 

Monitors spontaneous triggered breaths within 

user-selectable time interval. Time interval 

resets with each spontaneous trigger. If a 

spontaneous trigger is not detected within the 

selected apnea time interval, there is an audible 

and visual alarm indicator. The audible alarm 

indicator cancels when two consecutive spontaneous 

triggers are detected. The apnea alarm can 

be disabled. 

Audible and visual indicators if the minute 

Apnea No spontaneous 

triggered breath 

detected 

within set 

apnea interval 

Check air flow pathway. 

Block or restriction in the air 

flow pathway. 

Activated when the leak, during exhalation, falls 

50% or 5 LPM, whichever is greater, below a 

limit for a period of one minute. 

Low leak during 

exhalation 

Exh. 

Port 



Troubleshooting (Continued) 

Check circuit and patient 

connection. 

Patient disconnect or large 

leak. 

Ventilation is below the alarm setting. 

The audible alarm indicator cancels if the patient 

minute ventilation increases above the alarm 

setting. Alarm can be disabled. 

Low minute 

ventilation 

LoMin 

Vent 

Reevaluate the patient and 

alarm settings. 

Decrease in patient rate or 

tidal volume. 



Improperly set alarm limit. 

1045049 

6-9

6-10 




1045049 

Meaning Possible Cause Corrective 

Action 

Description 

Alarm 

Display 



Increase in patient breathing 

rate. 

High total 

breathing 

rate 

Hi 

Rate 


alarm setting. 


Continuously compares the total breathing 

rate (machine + spontaneous) with the Hi 

Rate alarm setting. Audible and visual 

indicator if the measured value is higher 

than the alarm setting. The audible alarm 

self-cancels if the total breathing rate drops 

below the alarm setting. 


and alarm settings. 

Decrease in patient breathing 

rate. 

Continuously compares the total breathing rate 

(machine + spontaneous) with the Lo Rate alarm 

setting. Audible and visual indicator if the 

measured value is lower than the alarm setting. 

The audible alarm self-cancels if the total 

breathing rate increases above the alarm setting. 

Low total 

breathing 

rate 

Lo 

Rate 



Patient unable to trigger 

ventilator. 




Check the patient circuit. 

Large leak 

Loss of 

pressure 

regulation 


Occluded patient circuit 

Audible and visual indicators if the measured 

proximal pressure differs more than ± 5 cm H O 2 

of the set pressure for greater than 5 seconds. 

Audible self-cancels if the proximal pressure 

returns to within ± 5 cm H O of the set value. 

2 

Alarm is automatically disabled when the unit 

goes into flow limit control. 

P Regulation 

Check the patient circuit.


Meaning Possible Cause Corrective Action 

Description 

Alarm 

Display 

Check the proximal 

pressure line. 

Proximal pressure line 

disconnection or obstruction. 

Audible and visual indicators if proximal 

pressure measures less than 1.0 cm H O for 2 

greater than 1.0 second. Audible alarm 

self-cancels if the measured proximal 

pressure is increased above 1.0 cm H O. 2 

Alarm is automatically disabled when the 

unit goes into flow limit control. 

Proximal 

pressure line 

disconnect 

ProxLine 

Disc 

Check the oxygen 

supply. 

Insufficient oxygen 

supply pressure. 

Check the oxygen 

regulator inlet filter; 

replace if necessary. 

Obstructed O 2 inlet filter. 

O Flow Incorrect System alarm that activates audible and visual 

2 

O flow indicators if the oxygen supply is lots. The 

2 

audible alarm does not self-cancel after 

correction. During the alarm condition, the 

ventilator continues to function. 

Mask removed or dislodged. Reapply mask. 

Audible and visual indicator if mask is 

removed or becomes dislodged enough to 

cause excessive leak. (see section 3.10) 

Disconnect Mask has been 

removed or 

excessive leak. 

Audible self-cancels if leak is resolved. 




1045049 

6-11

6-12 


6.5 Check Vent Error Codes 

1045049 

3 

Perform Testing according to 

the "Recommended Testing 

after Part(s) Replacement" 

found in Chapter 8 

Figure 6-3 

Check Vent Error Flow Chart 


“Check Vent” Error Codes 


(Replace in order until the 

problem is corrected.) 

Description 

Code Error Definition 

100 RTC failure on the MC Real Time Clock failure on the MC MC 

101 MC NVRAM CRC error MC Non-Volatile Random Access Memory Cyclic MC 

Redundancy Check error 

102 Backup battery failure on Backup battery for the NVRAM and RTC failure on the MC 

the MC MC 

103 V ref failure on the MC Reference voltage failure on the MC MC 

200 DC display voltage Error detected in the display voltage on the DC DC 

201 DC audible alarm Audible alarm current error detected on the DC DC 

202 DC Check Vent indicator Check Vent indicator current error detected on the DC DC 

203 DC Vent Inop indicator Vent Inop indicator current error detected on the DC DC 

204 DC backlight error Backlight voltage error detected on the D C DC 

205 DC alarm battery Alarm battery voltage low on the DC Recharge battery 

(See Section 5.8.3) 

DC 

206 Keypad Error Key is held down too long (30 seconds) Keypad, DC 



300 Circulation fan Circulation fan is not operational Circulation fan 

Error Codes (Continued) 

301 Invalid PC Data not read successfully during installation Blower Valve Cal, PC 

Calibration Data 

303 Blower speed Blower speed exceeds 16500 RPM Blower 

PC 

306 OM detection PC detects OM originally present, but became OM cable 

disconnected during operation OM 

PC 

1045049 

6-13

6-14 


6.6 Vent Inop Errors 

(Use when Vent Inop occurs and the unit operates afterwards) 

NOTE: When checking for Vent Inop 

Errors, make sure that errors on the 

PC, MC and DC are noted. If any 

indicate a hardware or therapy delivery 

suspected problem, follow this course of 

action. 

1045049 

Error Indicated on Vision Display 

-17 19 3 

Figure 6-4 

Vent Inop Indicator Troubleshooting Flow Chart 


NOTE: When checking for Vent Inop 

Errors, make sure that errors on the 

PC, MC and DC are noted. If any 

indicate a hardware or therapy delivery 

suspected problem, follow this course of 

action. 

Error Indicated PC/Laptop 

(use when “Ventilator Inoperative” is continuously activated) 

Figure 6-5 

Vent Inop Indicator Troubleshooting Flow Chart 



Vent Inop Errors (Continued) 

1045049 

6-15

6-16 



Common System “Vent Inop” Errors 

1045049 


(Replace in order until the 

MC DC PC Error Definition Description 

problem is corrected.) 

0 0 0 Hardware Failure Subsystem detects a hardware failure Refer to error reported on 

other subsystem 

601 E01 1601 Spurious interrupt MCU detects spurious interrupt Subsystem with LED lit 

602 E02 1602 Unassigned interrupt MCU detects unassigned interrupt Subsystem with LED lit 

603 E03 1603 Bus interrupt MCU detects bus interrupt Subsystem with LED lit 

604 E04 1604 Illegal instruction MCU detects illegal instruction executed Subsystem with LED lit 

605 E05 1605 Breakpoint error MCU detects breakpoint error Subsystem with LED lit 

606 E06 1606 Divide by zero MCU detects divide by zero Subsystem with LED lit 

607 E07 1607 Uninitialized interrupt MCU detects uninitialized interrupt Subsystem with LED lit 

608 E08 1608 Software interrupt MCU detects software interrupt executed Subsystem with LED lit 

609 E09 1609 Unused interrupt MCU detects unused interrupt executed Subsystem with LED lit 

60A E0A 160A ROM CRC error EPROM corrupted (stored CRC does not match Subsystem with LED lit 

calculated CRC) 

60C N/A N/A Bad MC state Invalid data on “MC state” signal Subsystem with LED lit 

60E E0E 160E Watchdog failure Watchdog circuitry failure (software continues Subsystem with LED lit 

after long delay in watchdog timer test) 

614 E14 1614 Walking RAM test error Pattern read from RAM doesn’t match pattern Subsystem with LED lit 

written (RAM hardware problem) 

616 E16 1616 Watchdog reset after Watchdog Power-on reset occurred after Watchdog test Subsystem with LED lit 

Alarm PAL on MC 

test completed 

617 E17 1617 SCI failed SCI register not ready for a character to be output Subsystem with LED lit 

after a delay loop of one flip-flop iterations ICB cable 

700 F00 1700 CRC error on third send to Calculated CRC does not match transmitted CRC DC 

DC – MC on third try MC 

PC 

ICB cable 

701 F01 1701 NAK received on third send to Negative Acknowledgment message received DC 

DC-MC on third try MC 

PC 

ICB cable 

702 F02 1702 Tack timeout on third send to Tack not received on last byte sent within DC 

DC-MC 750 usecs MC 

PC 


Common System “Vent Inop” Errors 




703 F03 1703 Trply timeout on third send to Slave did not start responding within one msec ICB cable 

DC-MC of last byte sent from MC DC 

MC 

PC 

N/A F04 1704 MC timeout from slave MC did not request data from slave within MC/PC (if code exist) 

15 msecs 

705 F05 1705 Packet does not fit in message Buffer in “Move Packet To Message” is out of Subsystem with LED lit 

room 

706 F06 1706 Invalid timer value Timers not initialized before this call or invalid Subsystem with LED lit 

data on the timer parameter 

707 F07 1707 Invalid delay value Timers not initialized before this call or requested Subsystem with LED lit 

delay is greater than one minute (prevents rollover) 

708 F08 1708 Invalid delay (usec) Timers not initialized before this call or requested Subsystem with LED lit 

delay is greater than 85 usecs (use “Delay” for 

larger delays) 

709 F09 1709 GPT not initialized GPT not initialized before call to Initiate Timers Subsystem with LED lit 

is made 

70A F0A 170A Invalid usec ticks Timers not initialized before this call or PCsed Subsystem with LED lit 

parameter to large (greater than 62499 prevents 

rollover) 

70B F0B 170B Invalid priority level PCsed priority level value has invalid data Subsystem with LED lit 

70C N/A N/A CRC error on third send to PC Calculated CRC does not match transmitted CRC ICB cable 

on third try PC 

DC 

MC 

70D N/A N/A NAK received on third send to PC NAK received on third try ICB cable 

PC 

DC 

MC 

70E N/A N/A Tack timeout on third send to PC Tack not received on last byte sent to PC within ICB cable 

750 usecs PC 

DC 

MC 

70F N/A N/A Trply timeout on third to PC PC did not start responding within one msec ICB cable 

of last byte sent from MC PC 

DC 

MC 

1045049 

FFFF FFFF FFFF Illegal Error Report Software recognzed an extra data bit No Action Required 

6-17

6-18 

PC Specific “Vent Inop” Error Codes 




(Replace in order until 

the problem is solved.) 

Code Error Description 

1045049 

1201 ADC timeout After read of internal ADC, incomplete conversion occurred after a PC 

173 usec delay. (ILFR, PRV, O , ANA ground, Vref) 

2 

1202 Blower speed test fail Invalid data in the “blower test status” signal PC 

1203 Error controlling operational tests Invalid data in the “test case primary” and “test case secondary” PC 

signals 

1204 MUX voltage error Invalid data in the “MUX channel” parameter PC 

1205 Other voltage error Invalid data in the “channel” parameter PC 

1206 IADC failed Internal ADC did not complete sequence before background sensors PC 

are read 

1207 MC did not communicate within MC did not request status within 30 seconds of PC starting ICB cable 

start-up time MC, PC, DC 

1208 12 volts voltage reference test 12 volt signal read from MUX is less than 11 volts or greater than PC 

failed - operational 13 volts 

120A Bulk supply voltage reference test Bulk supply signal read from MUX is less than 20 volts or greater PC 

failed - operational than 38.88 volts 

120B –12 volts voltage reference test –12 volt signal read from MUX is less than –13 volts or greater than PC 

failed - operational –11 volts 

120C –5 volts voltage reference test – 5 volt signal read from MUX is less than –5.425 volts or greater PC 

failed - operational than -4.547 

120D Reference Voltage test Voltage reference signal read from MUX is less than 3.749 volts or PC 

failed - operational greater than 4.445 volts 

120E QSM failed Queued Serial Module failed PC 

120F Error in rise rate processing The Rise Rate information in the MC to PC message not within ICB cable 

range (0-4) PC, MC, DC 

1210 Blower voltage bad in safe state Blower drive voltage read from MUX is greater than 15 mV PC 

1211 PRV voltage bad in safe state PRV drive voltage read from internal ADC is greater than 15 mV PC 

1212 ILFR voltage bad in safe state ILFR drive voltage read from internal ADC is greater than 15 mV PC 

1213 O valve voltage bad in safe state Oxygen module drive voltage read from Internal ADC is greater PC 

2 

than15 mV 

1214 Failure controlling start-up tests Invalid data in “test case” PC 

1215 12 volts voltage reference test 12 volt signal read from MUX is less than 10.12 volts or greater PC 

failed - start-up than 14.04 volts 

1216 ANA ground voltage reference test ANA and signal read from MUX is less than 0 mV or greater than PC 

failed - start-up 500 mV 

1217 Bulk supply voltage reference test Bulk supply signal read from MUX is less than 18.4 V or greater PC 

failed - start-up than 38.88 V 






1218 –12 volts voltage reference test –12 volt signal read from MUX is less than –14.04 V or greater than PC 

failed - start-up –10.12 V 

1219 – 5 volts voltage reference test –5 volt signal read from MUX is less than –5.833 V or greater than PC 

failed - start-up – 4.467 

121A Reference Voltage test Voltage reference signal read from MUX is less than 3.749 V or PC 

failed - start-up greater than 4.445 V 

121B Blower voltage reference bad - Blower drive voltage read from MUX is greater than 100 mV PC 

start-up 

121C ILFR voltage reference bad - ILFR drive voltage read from internal ADC is greater than 100 mV PC 

start-up 

121D O valve voltage reference bad - Oxygen Module drive voltage read from Internal ADC is greater than PC 

2 

start-up 100 mV 

121E PRV voltage reference bad - PRV drive voltage read from internal ADC is greater than 100 mV PC 

operational 

121F Blower voltage reference bad - Blower drive voltage read from MUX is greater than 40 mV on the PC 

operational second try immediately after first try 

122A Corrupted Resistance Table Invalid data in the resistance table - Software Error PC 

122B Invalid Mode Selected mode not supported in software - Software Error PC needs 

PAV / T EPROM 

122C Blower Failure Blower Bad (overcurrent, undervoltage, shut down) PC, Blower 

122D Bad Backup unit outlet Data can not be read from backup unit outlet pressor sensor PC 

pressure sensor 

122E Unit outlet difference Unit outlet and backup unit outlet sensor readings differ too much PC, AFM,PSS 

122F Stuck backup unit outlet pressure Bad backup unit outlet pressure sensor or ADC PC 

sensor 

1220 ILFR voltage reference bad - ILFR drive voltage read from the internal ADC is greater than PC 

operational 40 mV on the second try immediately after the first try 

1221 O valve voltage reference bad - Oxygen Module drive voltage read from the internal ADC is greater PC 

2 

operational than 40 mV on the second try immediately after the first try 

1222 PRV voltage reference bad - PRV drive voltage read from the internal ADC is greater than PC 

operational 40 mV on the second try immediately after the first try 

1225 Internal ADC calibration divide by Analog Vref signal = analog ground PC 

zero 

1226 Bad O2 temperature sensor Oxygen Module temperature out of range (40-160° F), for 2500 OM 

counts, conversion did not complete 

1227 Blower out of calibration / stuck Blower speed ± 750 RPM from desired setting for 12 seconds Blower 

motor PC 

1228 Bad pressure setpoint calculated LPF of pressure setpoint in the rise rate calculation not in range of PC 

the unit outlet pressure - error in LPF calculation 

1229 Patient pressure sensor drift error LPF of change in pressure average is greater than 10 cm H2O if the PC 

flow is less than 5 LPM 

1230 Voltage Failure Voltage reference test failed PC 

1045049 

6-19

6-20 






the problem is solved.) 

Code Error Description 

1045049 

1300 Bad AFM calibration AFM calibration data all zeroes or CRC bad AFM 

data CRC 

1301 Bad O Module calibration data OM calibration all zeroes or CRC bad OM 

2 

CRC 

1302 Bad PC calibration data CRC PC calibration data all zeroes or CRC bad PC 

1304 QSM timeout QSPI not finished after 100 usecs after selection of EEPROM for PC 

reading of actual read 

1305 No AFM AFM detection signal, supplied by hardware, is greater than AFM cable 

300 mV (cut off for AFM being present) AFM 

PC 

1308 Bad pressure setpoint message MC commanded pressure in message is greater than 40 cm H2O ICB cable 

from MC MC 

PC 

DC 

1309 Bad rise rate message from MC Rise rate setpoint in MC message is greater than four (4) ICB cable 

MC 

PC 

DC 

130A Bad IPAP setpoint message from IPAP pressure setpoint in the MC message is greater than ICB cable 

MC 40 cm H2O (non-PAV) or 50 cm H2O (PAV) MC 

PC 

DC 

130B Bad O concentration setpoint Oxygen concentration in the MC message is less than 21 or ICB cable 

2 

message from MC greater than 100 MC 

PC 

DC 

130C Invalid MC message Byte count in message not equal to expected byte count ICB cable 

MC 

PC 

DC 

1312 AFM detect conversion cannot be Read of ADC not completed in time for the AFM detection read AFM cable 

done AFM 

PC 



1313 OM detect conversion cannot be Read of ADC not completed in time for OM detection read OM cable 

done OM, PC, AM 

1316 Stuck absolute atmospheric Sensor reading is less than 20 in. HG or greater than 40 in. HG for PC 

pressure sensor 2.5 seconds 

1317 Stuck unit outlet pressure Sensor reading is less than –5 cm H2O or greater than 70 cm H2O AFM cable 

for 2.5 seconds AFM 

1318 Stuck patient pressure sensor Sensor reading is less than –5 cm H2O or greater than 50 cm H2O PC 

for 2.5 seconds 

1319 Stuck total flow sensor Sensor reading is less than –200 LPM or greater than 300 LPM AFM cable 

AFM 

131A Stuck O2 flow sensor Sensor reading is greater than 120 LPM for 2.5 seconds OM cable 

OM 

131B Bad air temperature sensor Air temperature out of range (40 - 160° F) for 2500 counts, AFM cable 

conversion not complete AFM 

PC 

131C ATM detected bad unit outlet (High ATM - Low ATM) × 100 is greater than or equal to (5 × High PC 

pressure sensor ATM) 

131D Bad calibration data 2 CRC PC calibration data 2 CRC is bad after filling with either default PC 

values or calculated data and reading them back out 

131E Bad PC calibration data 3 CRC PC calibration data 3 CRC is bad after filling with default values PC 

and read them back out 

131F Error in drift tests Invalid data in “drift test case” PC 

1320 Bad AFM drift calibration data AFM calibration data 1 CRC is bad after filling with either default AFM cable 

CRC values or calculated values and read them back out AFM 

PC 

1321 Bad PC calibration PC calibration data 4 CRC is bad after filling with either default PC 

values or calculated data and read them back 

1322 Sensor drift failure Unit outlet or pressure sensor out of range (Tolerance + 2 cm H2O AFM cable 

around nominal) AFM 

PC 

1323 Bad Calibration data 6 CRC Drift Data could not be updated. PC 




1324 Bad OM drift calibration data OM calibration data 1 CRC is bad after filling with either default OM cable, 

CRC values or calculated data and reading them back OM, PAS 

1325 Total Flow Sensor Drift Total Flow sensor drifted too much AFM cable, 

AFM, PAS 

1045049 

1326 Oxygen Flow Sensor Drift Oxygen Flow sensor drifted too much OM cable 

OM,PAS 

6-21

6-22 

MC Specific “Vent Inop” Error Codes 





the problem is corrected.) 

Code Error Definition Description 

1045049 

206 RTC test error Invalid data on the “RTC case” signal or SPI time-out when MC 

attempting to get time 

207 Illegal Operational Test Requested test does not exist MC 

209 +12 volt out of range ADC voltage test MC 

20A -12 volt out of range ADC voltage test MC 

20B +24 volt value out of range ACC voltage test MC 

20C Reference voltage value out of ADC voltage test MC 

range 

20D ADC could not return +12 volt ADC voltage test MC 

value 

20E ADC could not return-12 volt ADC voltage test MC 

range 

20F ADC could not return +24 volt ADC voltage test MC 

value 


210 ADC could not return Reference ADC voltage test MC 

Voltage Value 

211 Power Fail without AC Fail Loss of bulk supply without loss of AC input caused by PS1 trip MC 

PSS 

PC 

301 Invalid byte count in DCS Byte count from DCS not within range (greater than 0) ICB cable 

message DC 

MC 

304 Divide by zero in sum total Calculation error MC 

breaths calculation 

305 Divide by zero in baseline error Clock cycle times per breath = 0 MC 

calculation 

306 Divide by zero in calc. BPM / Min Sum total time = 0 MC 

Vent calc.

MC Specific “Vent Inop” Error Codes 




Code Error Definition Description 

307 Divide by zero in Ti / Ttot Clock cycles time per breath = 0 MC 

calculation 

30A MC scan cannot be performed Response task did not complete processing before 10 msecs ICB cable 

(overflow of 10 msecs process) interrupt occurred again DC 

PC 

30B Invalid command for CPAP mode Received command ID from DC for some S/T or PAV/T specific D C 

message MC 

30C Invalid command for S/T mode Received command ID from DC for some CPAP or PAV/T DC 

specific message MC 

30D Invalid command for PAV / T mode Received command ID from DC for some CPAP or S/T DC 

30E No dispatch function Command ID from DC not recognized DC 

310 Invalid mode update Invalid mode update MC 

311 Illegal alarm module Hardware returns something other than built-in Module B MC 

312 MC Scan Overruns Response task did not complete processing before 10 msecs interrupt ICB cable 

occurred again, 3 times in 1 hour. DC 

PC 

MC 

313 PAV/T Security failure PAV/T Software implementation not accessible Contact 

Respironics 

Technical 

Service 




332 Pressure regulation Cannot regulate to 2 cm H2O in Pressure Out or Flow Limit Control ILFR valve 

PRV valve 

Blower 

PC 

AFM 

MC 

333 Invalid S / T state Invalid data on “system status state” signal (not BPM, IPAP, or MC 

EPAP) 

334 Invalid PAV state Invalid data on “system status state” signal (not BPM, IPAP, MC 

EPAP, or To Inspiratory) 

335 Invalid mode Invalid data on “active mode” signal (not Standby, CPAP, or MC 

PAV/T) 

1045049 

6-23

6-24 

DC Specific “Vent Inop” Error Codes 



Code Error Definition Description Corrective Action 



1045049 

B00 Bad ICB message from MC Status in self-test message not valid, Byte count in message greater ICB cable 

than 125, command ID not recognized. DC 

MC 

PC 

B01 Bad download sequence from MC DC received download message when not expecting it ICB cable 

DC 

MC 

PC 

B02 Bad mode Invalid data in “test mode” and “test mode” signals. Mode-specific DC 

messages received in the wrong mode 

B03 Error decoding hard key table ICB message corresponding to selected hard key not valid DC 

B04 Bad screen state Receive soft key selection for mode when impossible (illegal entry into DC 

process key stroke function) 

B09 Simultaneous failure of audible Simultaneous failure of Vent Inop LED and Audible Alarm as DC 

alarm and system error LED indicated by hardware 

B0A MC did not start communication MC did not send status request within 30 seconds of the DCS MC 

within start-up time starting up D C 

B0B Bad font type Invalid data on the “G screen font type” signal D C 

B0C Bad video memory address Calculated screen pixel to which to begin writing is to large (off D C 

the screen) 

B0D DC queue overflow No room in the display queue for incoming MC message D C 

(background not running often enough) 

B0E Bad graph size X length or Y length is less than or equal to zero (invalid memory data) D C 

B0F No graph structure available An attempt is being made to initialize a fourth graph D C 

B10 Spurious keypad interrupts More than ten keypad interrupts in a row with no key depressed Touch pad 

D C 

11D7 Invalid start-up test Invalid “test case” data D C 

11D8 Invalid BIST test Invalid “Built-In Self Test” case data D C 

11D1 Keypad Error Key is pressed during start-up tests or held down too long (10 sec.) Touchpad 

DC 


Error Codes Chart Abbreviation Definitions 

Abbreviation Definition 

ADC Analog to Digital Converter 

AFM Air Flow Module 

ANA Analog 

ATM Atmospheric 

BIST Built-In Self Test 

CRC Cyclic Redundancy Check 

D C Display Control 



EPROM Electrically Programmable Read Only Memory 

EEPROM Electrically Erasable Programmable Read Only Memory 

GPT General Purpose Timer 

IADC Internal Analog to Digital Converter 

ICB Intermodule Communications Bus 

ILFR In-Line Flow Restrictor 

LCD Liquid Crystal Display 

LED Light Emitting Diode 

LPF Low PCs Filter 

MC Main Control 

MCU Microcontroller Unit 

MP Microprocessor 

MUX Multiplexer 

NAK Negative Acknowledgment 

NVRAM Non-Volatile Random Access Memory 

O 2 

Oxygen 

OM Oxygen Module 

1045049 

6-25

6-26 


Error Codes (Continued) 

Error Codes Chart Abbreviation Definitions (Continued) 

1045049 

Abbreviation Definition 

PC Pressure Control 

PAV Proportional Assist Ventilation 

PAV/T Proportional Assist Ventilation / Timed 

PRV Pressure Release Valve 

QSM Queued Serial Module 

QSP Queued Serial Peripheral Interface 

RAM Random Access Memory 

ROM Read Only Memory 

RPM Revolutions Per Minute 

RTC Real Time Clock 

SCI Serial Interface 

SPI Serial Peripheral Interface 

Tack Acknowledge Timer 

Trply Reply Timer 

Vref Voltage Reference 



Chapter 7: Repair and Replacement 


7.1 Contact Information .................................................................. 7-2 

7.2 Exploded View............................................................................ 7-3 

7.3 BiPAP Vision Repair Kits .......................................................... 7-5 

7.4 Mobile Stand II and III Repair Parts .....................................7-10 

7.5 Replacement Identification Photos ........................................ 7-11 

7.6 Touch Pad Replacement Instructions ................................... 7-59 

1045049 

7-1

7-2 



7.1 Contact Information 

Figures 7-1 and 7-2 list the names and identify the locations of major replaceable components in the BiPAP 

Vision. These drawings provide a quick reference and overview of the unit. 

1045049 

Note: Refer to Section 8.2 for testing that is required after items are replaced. 

For replacement part ordering information, technical or clinical assistance contact Respironics Customer 

Service at: 

U.S. and Canada 

Parts Ordering: 1-800-345-6443 

Fax: 1-800-886-0245 

Technical Support: 1-800-345-6443 

Fax: 1-724-387-5236 

International (Parts or Technical Assistance) 

Phone: 1-724-387-4000 

Fax: 1-724-387-5012 

E-Mail Technical Assistance service@respironics.com 




7.2 Exploded View 



Figure 7-1 

BiPAP Vision Ventilator Component Location and Identification 

1045049 

7-3

7-4 


Exploded View (Continued) 

1045049 

Figure 7-2 

Front Panel Assembly Exploded View 

* Not available as a repair kit, contact Technical Support for assistance. 


* 

( )

7.3 BiPAP Vision Repair Kits 



Replacement Kit Replacement Part No. Photo Page No. 

AC Inlet (includes power inlet filter) 582138 7-13,7-14 

AC Power Cord (North American) 

(See Note 2) 362435 Not Shown 

AC Power Cord Clamp 1000751 7-13,7-43 

Airflow Module (AFM) 582127 7-19,7-31,7-37 

Alarm Module (Optional) 582158 7-36 

Audible Alarm 1000743 7-19,7-30,7-31 

Backlight 1014432 7-56 

Battery, (MC board) S/N >106K (See Note 8) 

1006005 7-36 

Battery, Lithium (MC board) S/N 106K 1004700 7-13,7-55 

Cable Kit (all interconnecting) 582131 Not Shown 

Circulation Fan 582132 7-26,7-27 

Circulation Fan Muffler English – 582155 

International - 1005618 7-16,7-43 

Coiled Pressure Tube 28” 1000752 7-19,7-30,7-31 

DC Subsystem S/N >106K (see note 4) 1004709 7-17 

DC/LCD Ribbon Cable 1016457 7-56 

DCS Connector 1007206 Not Shown 

DC/MC/PC Upgrade with PAV S/N

7-6 


BiPAP Vision Repair Kits (Continued) 


EPROM Extraction Tool Kit 1006874 Not Shown 

Front Panel Enclosure 582135 7-54 

Fuses, 115VAC, S/N 100499 1000749 7-14 

(Also part of 

Fuses, 230-240 Volt, all S/N’s 1000750 7-14 

Grounding Post 1002902 7-13,7-26 

Grounding Post Hand Punch 1002991 Not Shown 

Keypad, English 582151 7-54 

Keypad, German 582221 

Keypad, Universal 1004712 

Hose Kit (All internal Tubing) 582136 Not Shown 

ICB Cable S/N 106K 1004695 7-18,7-19,7-28,7-30 

In-Line Flow Restrictor (ILFR) Valve Assembly 582137 7-29,7-35,7-39 

Inlet Filter Cover 1003444 7-13,7-15,7-43 

Inlet Filter Enclosure Assembly (see note 7) 582134 7-13,7-15,7-20 

Inlet Filter Foam Strip 1004493 7-52 

Inlet Filter Replacement (×6) 582101 7-15 

Inlet Mesh Filter (Nylon) 1000747 7-15 

Label, Diagnostic/Nurse S/N>106K 1004703 7-16 

Liquid Crystal Display (LCD) Assembly 582139 7-17,7-56 

Main Power Switch 582141 7-13,7-26,7-38 

1045049 

kit 1004713) 

upgrade kit 1000356) 






MC/DC Cable S/N>106K 1004698 7-28 

MC Board S/N>106K (see note3,4) 1004711 7-34,7-36 

Mobile Stand III Shipper 1009410 Not Shown 

Mobile Stand III drawer feet 1009745 Not Shown 

Ni-Cad Alarm Battery for DC (all) 1012819 7-17, 7-22, 7-25 

Nurse Call Adapter (Executon/Hill-Rom connector) 1014280 Not Shown 

Nurse Call Cable 1003742 Not Shown 

Nurse Call Harness S/N >106K 1004697 7-26,7-27,7-36 

Oxygen Baffle 1004705 7-26,7-31,7-35 

Oxygen Module (OM) Assembly English- 582142 7-13,7-20,7-29, 

Int’l - 1004977 7-32 

Oxygen Module (OM) Manifold / Regulator Filters 582153 7-13 

(x5) 

1007547 

Oxygen Module (OM) Manifold/Regulator Bowl 582154 7-13 

1007546 

Oxygen Regulator/Manifold 1014434 7-32 

Oxygen Flowbody/PCA 1014433 7-32 

Oxygen Inlet Fitting (DISS) 1014805 7-32 

PC Board S/N>106K ( see notes 3,4) 1004710 7-11 

PC/MC Upgrade PAV S/N106K 1004706 7-27,7-30 

Power Supply Subsystem (PSS) 582145 7-26,7-27,7-30,7-38 

Pressure Regulation Valve (PRV) Assembly 582147 7-29,7-35,7-39 

Pressure Regulation Valve (PRV) Muffler 582156 7-55 

Rotary Encoder 582148 7-23 

Rotary Encoder Knob 582157 7-17,7-54 

Rubber Feet 582149 7-43,7-55 

Service Manual 582160 Not Shown 

1045049 

7-7

7-8 



1045049 


Shipping Container 1002424 Not Shown 

(includes all necessary inner packaging) 

Test Cable(S/N 106k) 


7-36,7-42 

Test Cable S/N >106K (see section 8.10) 1004823 7-58 

(or for upgraded units) 

Test Orifice (0.25”) 332353 Not Shown 

Top Enclosure 582150 7-13,7-43 

Transformer Assembly 582152 7-26,7-27, 7-40


NOTE 1: All items have a quantity of one unless otherwise specified. 



NOTE 2: For specific country AC power cord ordering information, please contact 

Respironics Customer Service. 

NOTE 3: The original EPROM must be removed from the circuit board and installed into the 

new circuit board, unless performing an upgrade to units S/N

7-10 


7.4 BiPAP Mobile Stand Repair Parts 

Mobile Stand II 

Replacement Kit Replacement Part No. 

Mobile Stand II Caster (locking) 1001921 

Mobile Stand II Casters (x3) (non-locking) 1001922 

Mobile Stand II Circuit Arm Mount 1002310 

Mobile Stand II Plexiglass Door 1001920 

Mobile Stand II Pole 1001923 

Mobile Stand II Shipping Container 1002425 

Mobile Stand II Strike / Catch Kit 1002151 

Circuit Support Arm Handle 1006501 

Mobile Stand III 

Replacement Kit Replacement Part No. 

Humidifier Bracket 1005101 

O2 Hose Hanger Assembly 1007903 

Oxygen Analyzer Pole 1011515 

Storage Compartment 1007904 

Mobile Stand III Storage Tray 1007905 

Mobile Stand III Shipper 1009410 

Mobile Stand III Storage Tray Feet 1009745 

1045049 


7.5 Replacement Identification Photos 

Overview 



The following identification photos are to be used as repair guidelines. Items have been identified 

for all serial number units beginning with 100500 to present. 

Pressure Control Board S/N >106K 

(1004710) 

EPROM S/N >106K 

(1000353) 

(W/ PAV 1000354) 

1045049 

7-11

7-12 


1045049 

Pressure Air Flow Subsystem 

Note: This item is obsolete, originally P/N 582146. Replaced by 1004713 for units S/N

Oxygen Module 

Assembly (English) 

(582142) 

(Int’l 1005619) 

Oxygen Inlet 

( 1014805) 

Oxygen Module 

Manifold/Regulator 

Filters 

(582153 ) 

(1007547 ) 

Oxygen Module 

Manifold/Regulator 

Bowl 

(582154) 

(1007546) 

Top Enclosure 

(582150) 

Grounding Post 

(1002902) 

AC Inlet 

(582138) 

Rear View 

S/N >106000 

Bottom Enclosure 

S/N >106K 

(1004700) 



Inlet Filter Enclosure 

Assembly 

(582134) 

Power Cord Clamp 

(1000751) 

Main Power Switch (now comes with a 

spring loaded cover.) (582141) 

Inlet Filter Cover 

(1003444) 

Top Cover Screws (2) 

Nurse Call/Remote 

Alarm Connector 

RS232 Diagnostic 

Connector 

Model Number 

and 

Serial Number 

1045049 

7-13

7-14 


1045049 

Fuses and Voltage Selector 

Fuse Location 

AC Inlet 

(582138) Voltage Setting 

Fuses 

(1000749 for 100 and 120 VAC operation 

1000750 for 230 and 240 VAC operation) 



(582134) 

Inlet Filter (x6) 

(582101) 

Inlet Mesh Filter 

(1000747) 



Inlet Filter Cover 

(1003444) 

1045049 

7-15

7-16 


Label, Diagnostic Nurse 

Call S/N >106K 

(1004703) 

1045049 

* Included 

Circulation Fan Muffler 

(English 582155) 

(Int’l 1005618) 

Circulation Fan Muffler 

Standoff(s) (x4)* 


Screws (x4) * 

Exploded View (Continued)

Alarm Battery 

(1012819) 

ICB Cable S/N >106K 

(1004695) 

DC View #1 S/N >106K 

Display Control (DC) S/N >106K 

(1004709) 

Rotary Encoder 

(582148) 



Liquid Crystal Display 

(582139) Located under the 

DC/LCD Mounting plate 

RS232 Harness S/N >106K 

(1004699) 

DC Power Connection 

S/N >106K 

Ground Connection 

1045049 

7-17

7-18 


Audible Alarm 

Connection 


Connection 

1045049 

LCD Backlight 

Voltage Connection 

(Connects either way) 

DC View #2 

S/N >106K 

Main Power Indicator 

Cable Connection 

(Connects either way) 


(1004695) 


DCS/LCD 

Mounting 

Bracket

Ground Wire 

Main Power 

Indicator Connector 

Component Identification 


(1004695) 

RS 232 Harness S/N >106K 

(1004699) 



Audible Alarm 

(1000743) 

Air Flow 

Module 

(582127) 

Coiled Pressure 

Tubing 

(1000752) 

1045049 

7-19

7-20 


Blower Assembly 

(582128) 

1045049 



Assembly 

(582134) 

Blower Muffler 

(582129) 


Oxygen Module Assembly 


(Int’l 1005619)

Blower Vibration 

Isolators (x3) 

(1003893) 

* Not sold seperately 

Blower 

Blower Connection to PC 

Blower Assembly 

(582128) 



Blower Mounting 

Brackets (x3) 

Heat Sink* 

Dampener* 

1045049 

7-21

7-22 


Audible Alarm 

Battery 

1045049 


Front Panel Assembly 

DC Subsystem 

ICB Connector 

Error LED 

DC Power Connector 


Main Power 

Indicator Connector 

LCD / DC Cable 

Keypad Cable 

Ground Connection

LCD / DC 

Cable 

DC Cable Connections 

DC EPROM 


(582148) 



Keypad 

Ribbon Cable 

1045049 

7-23

7-24 


1045049 

Front View DC Subsystem 

(1004709, or part of 1004707, 1004714) 

DC EPROM 

Error LED 


Audible Alarm 

Connection 

Audible Alarm Battery 

Back View DC Subsystem 

Rotary Encoder Connection 

(1004709, or part of 1004707, 1004714) 

ICB Connector 



Keypad 

Connection 

Power Supply 

Connection 

1045049 

7-25

7-26 


1045049 

Inlet Filter 

Enclosure 

(582134) 

Main Power 

Switch 

(582141) 

Nurse Call/ Remote 


(1004697) 

Circulation Fan 

(582132) 

Power Supply 

Subsystem (PSS) 

(582145) 


RFI Filter 

(Part of AC Inlet) 

Ground Post 

(1002902) 

Transformer 

Assembly 

(582152) 

AC Inlet 

(582138) 


Oxygen Module 

Assembly 

(582142) 

Blower / ILFR Coupler 

(1003728) 

AC Inlet to Transformer 

Connection 

Oxygen Baffle 

(1004705)

PC Subsystem 

PC to DC 

Power Connection 

Power Supply 

Subsystem (PSS) 

(582145) 

Power Harness PSS/PC S/N >106K 

(1004706) 


RS 232 Harness S/N>106K 

(1004699) 

Main Power Switch Connection to PSS 



Nurse Call / Remote Alarm Harness 

(1004697) 

Transformer Assembly 

(582152) 


(582132) 

1045049 

7-27

7-28 


1045049 


(1004695) 

DC Cables 

Power Harness PC / DC S/N >106K 

(1004696) 


RS 232 Cable S/N >106K 

(1004698)

Oxygen Valve 

(Part of Kit 1014434) 

In-Line Flow 

Restrictor Valve 

(ILFR) (582137) 




(Int’l 1005619) 

Ac Inlet to Transformer Connection 



Oxygen to PC Ribbon Cable 

Oxygen Valve 

Connection 

Pressure Regulation 

Valve (PRV) 

(582147) 

AFM 

Thermister 

1045049 

7-29

7-30 


1045049 

PSS Subsystem 

(582145) 

PSS to PC Power Cable 

(1004706) 

Error LED 


Transformer 

Assembly 

(582152) 


Coiled Pressure Tube 

(1000752) 


(1004695) 

AFM to PC 

Ribbon Cable 

OM to PC 

Ribbon Cable 

Redundant 

Pressure Sensor 

Audible Alarm 

(1000743)


(582152) 

Oxygen Baffle 

(1004705) 


ICB Cable 

(1004695) 



Air Flow Module 

(582127) 

Audible Alarm 

(1000743) 

Coiled Pressure 

Tubing 

(1000752) 

1045049 

7-31

7-32 


Inlet Fitting (DISS) 1014805 

1045049 


(English, 582142) 

(Int’l 1005619) 

Regulator/Manifold Assembly 1014434 Flow Body / PCA 1014433 


Power Supply 

Connector 

Power Supply to 

DC Connector 

AFM Connector 

Pressure Control (PC) Subsystem* 

(1004710) 

PRV Connector 

ILFR Valve Connector 

Error LED 

Ambient Pressure Sensor 

EPROM 



Patient Pressure Sensor 

Oxygen Module Connector 

* Also part of 1004713, used to upgrade units S/N

7-34 


1045049 

EPROM 

Main Control (MC) Subsystem* 

(1004711) 

Nurse Call / Remote Alarm Connector 

Error LED 

RS 232 to DC Subsystem Connection 

* Also part of 1004713, 1000356, 1004714 and 1004707 


RS 232 Connector 

Alarm PAL 

(582158)


Inline Flow Restrictor Valve (ILFR) 

(582137) 



Pressure Regulation Valve (PRV) 

(582147) 

Oxygen Baffle 

(1004705) 

1045049 

7-35

7-36 


1045049 

EPROM 

Main Control (MC) Subsystem* 

(1004711) 

Nurse Call / Remote 


(1004697) 

Error LED 


Battery S/N >106K 

(1006005) 

* Also part of 1004713, 1000356, 1004714 and 1004707 used to upgrade units S/N

Flow Sensor 

Thermistor 

Air Flow Module (AFM) 

(582127) 

Connects to the PC Connects to the redundant 

pressure sensor on the PC 

Oxygen Baffle 

(1004705) 



Pressure Sensor 

Arrow towards front 

of unit, gas flow 

direction. 

1045049 

7-37

7-38 


1045049 

Main Power 

Switch Connection 

(582141) 

Transformer 

Connection 

Main Power LED, 

Connects to the Front Panel 

Power Supply Subsystem (PSS) 

(582145) 

Power Supply connection to PC Subsystem 

Circulation Fan Power 

Connection 


Circulation Fan Current Sense, 

Connects to PC

In-Line Flow 

Restrictor Valve 

(ILFR) (582137) 

Valve Identification 

Connect to PC Subsystem 



Pressure Regulation 

Valve (PRV) 

(582147) 

1045049 

7-39

7-40 


1045049 

Connection to PSS 

Bottom Insulation Spacer 


(582152) 

Retaining Nut 


Connection to AC Inlet 

Top Insulation Spacer 

Metal Retaining Plate

Nurse Call / Remote Alarm 

(1004697) 

RS 232 Connector 

(1004699) 

Connects to PSS 


Main Power Switch 

(582141) 


(582132) 

Connects to PSS 



Transformer Connection 

Connections to MC 

(Nurse Call / Remote Alarm) 

Ac Inlet / EMI Filter 

(582138) 

Grounding Stud 

Bottom Enclusure 

S/N >106K 

(1004700) 

1045049 

7-41

7-42 


1045049 

Nurse Call / Remote Alarm, 

RS 232 Cable routing 


Oxygen Module 

(English, 582142) 

(Int’l, 1005619) 

Rubber Feet (x4) 

(582149) 

Top Enclosure 

(582150) 

Back Panel, Units S/N

7-44 


1045049 

ICB Cable S/N < 106K 

Display Control Subsystem (D/CS) 

Connections for S/N

Audible Alarm 

Connection 

Rotary Encoder Connection 


Connections for S/N

7-46 


LCD Backlight Connector 

1045049 

Rotary Encoder Connector 


(582133) 

ICB Connector 

Error LED 

ICB Connector 

Placement for Upgraded Units 


Power Connector 

Main Power Connector 

DCS/LCD Connector 

Keypad Connector

EPROM 

(1000286 Non PAV S/N

7-48 


1045049 

Audible Alarm Battery 

ICB Connector 

Audible Alarm Connector 

Rotary Encoder Connector 


(582133) 

LCD Backlight Connector 

(connects either direction) 

RS 232 Test Cable Connector 

ICB Connector placement for upgraded units 

(Part of upgrade kit 1004713 or 1000356, PAV) 


Keypad Connector 

Power Connections

Blower 

(582128) 

Power Supply 

Subsystem 

(582145) 

Bottom Enclosure S/N

7-50 


1045049 

MCS Error LED 

MCS RS 232 Test 

Cable Connection 

PAS Blower 

Connection 

Unit Outlet Pressure Sensor 


(S/N

Blower Connector 



Pressure Airflow Subsystem (PAS) 

(No longer manufactured, now part of upgrade kit 1004713 or 1000356,PAV) 

Power Connector 

Unit Outlet Pressure 

Error LED 

ILFR Valve Connector 

EPROM S/N

7-52 


1045049 

Inlet Filter Foam Strip 

(1004493) 

Inlet Foam Strip Location 



(582134)

Main Control Subsystem (MCS) 



(No longer manufactured, now part of upgrade kit 1004713 or 100356, PAV for S/N

7-54 


1045049 

Keypad 

(English, 582151) 

(Universal Symbols, 1004712) 

(German, 582221) 

Note: See “Touchpad Replacement Instructions” at 

end of chapter, section 7.6 


Front Enclosusre 

(582135) 


Rotary Encoder Knob 

(582157)

Rubber Feet (x4) 

(582149) 


Bottom Enclosure S/N 106K 

(1004700) 



PRV Muffler 

(582156) 

1045049 

7-55

7-56 


LCD Backlight 1014432 

1045049 

Connects to DC Subsystem 

(Connects either direction) 

LCD Assembly 

(582139) 


Connects to 

DC Subsystem 

(Keypad)

Blower Valve Coupler 

(1003728) 



1045049 

7-57

7-58 


Test Cable, Units S/N < 106K ( 582161) 

1045049 

Test Cable Identification * 

Test Cable, Units S/N > 106K and Upgraded Units 

S/N < 106K Hybrid (1004823) 

* See Section 8.10, Test Cable Usage Definitions, for further information. 


Test Cable, Units S/N < 106K - 

Upgraded to Hybrid. (1004699)

7.6 Touch Pad Replacement Instructions 



Replacement Part Number: 582151 

Procedure 

Removed / Installed During Process: 

• Top enclosure 

• Front panel enclosure 

• Rotary encoder 

• Display / Control Subsystem-Liquid Crystal Display (D / CS - LCD) mounting plate assembly 

• Touch pad 

Included in Kit: Touch pad 

Tools Required: Phillips screwdriver, 7/16" nut driver, Isopropyl alcohol, Cleaning cloth 

Touch Pad 

WARNING: Electrical shock hazard: Disconnect the electrical supply before attempting to make 

any repairs to the device. 

CAUTION: 

Electronic components used in this device are subject to damage from static electricity. 

Repairs made to this device must be performed only in an antistatic, ESD-protected environment. 

1045049 

7-59

7-60 


Step 1 

Removing the D / CS Touch Pad Ribbon Cable and Shielding Foil 

1045049 

a. Making sure the front enclosure is protected, place it face down on the work surface 

with the D / CS upwards. 

b. Gently remove the ribbon cable from (J6). 

c. Remove the one D / CS mounting screw that has touch pad shielding foil and 

ground wire under it. Locate the foil away from this connection. 


Screws

Touch Pad Replacement (Continued) 

Step 2 

Removing the D / CS - LCD Mounting Plate 



a. Remove the six screws securing the D / CS - LCD mounting plate to the front 

enclosure. 

b. Hold down on the front panel enclosure, and slowly lift upwards on one of the 

mounting plate to begin releasing the LCD from the touch pad. Continue until the 

plate can be removed. 

NOTE: It may be necessary to use a small amount of isopropyl alcohol to assist with the touch 

pad removal. 

D / CS LCD 

Mounting Plate 

NOTE: Place this assembly in a protected area. 

Step 3 

Removing the Touch Pad 

a. With the touch pad facing down, place a small amount of isopropyl alcohol between the 

touch pad lens and the front panel enclosure at its smallest width (near the top). Tilt the 

front panel enclosure slightly, and allow it to sit for approximately 10 to 15 seconds. 

1045049 

7-61

7-62 


Apply Isopropyl 

Alcohol as Necessary 

1045049 

Apply Alcohol to Front Panel enclosure 


Touch Pad Replacement (Continued) 

b. Gently push the touch pad away from the front panel enclosure, while adding small amounts 

of alcohol as required, to loosen the bonding glue. Continue slowly and carefully around the 

panel opening until entire touch pad is removable. 

c. Using isopropyl alcohol, clean any remaining glue from the front panel enclosure touch 

pad mounting surface. 

Step 4 

Installing the Touch Pad 

a. Lay the front panel enclosure face up. With respect to the front of the unit, place the left 

side of the front panel enclosure slightly over the edge of the work surface. 

b. After assuring that all glue from the original touch pad has been removed from the front 

panel enclosure, remove the protective paper backing from the new touch pad, including 

the clear protective coating on the LCD side of the touch pad lens. 

c. Place the ribbon cables and ground shields through their appropriate slots in the front 

panel enclosure. Make sure no wiring is pinched. Slide the cables and shields through 

until the left side of the touch pad rests (but is not secured) on the left side of the front 

panel enclosure. 

d. Align the touch pad, top to bottom, and rest it in place. Observe alignment as the touch 

pad becomes secured to the front panel enclosure.



NOTE: 

Place one hand underneath the front panel enclosure while applying any pressure, so that the curve in 

the front panel is not damaged. Once on and aligned properly, apply a rotating, rubbing pressure to 

secure the touch pad. 

NOTE: 

If an alignment problem occurs, use a small amount of isopropyl alcohol to remove the touch pad. Allow 

to dry before trying again. 

Step 5 

Installing the D / CS - LCD Mounting Plate 

a. While placing the D / CS - LCD mounting plate on the front enclosure, ensure that the 

cables are properly routed. Secure the plate into position using the six mounting screws 

Step 6 

Installing the D / CS - Touch Pad Ribbon Cable 

a. With the tabs fully extended on (J6), place the ribbon cable completely into the connector. While 

applying slight inward pressure on the ribbon cable, lock the tabs on both sides of (J6). 

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7-63


Chapter 8: Testing and Calibration 


8.1 Overview ..................................................................................... 8-2 

8.2 Recommended Testing After Part(s) Replacement............... 8-3 

8.3 Exhalation Port Test ................................................................... 8-5 

8.4 Total Operating Hours Transfer Procedure ........................... 8-8 

8.5 Blower/Valve Calibration Procedure ..................................8-10 

8.6 Performance Verification.........................................................8-12 

8.7 Run-In Cycle Procedure...........................................................8-16 

8.8 System Final Test ......................................................................8-18 

8.9 PC or Laptop Setup Procedures .............................................8-37 

8.10 Test Cable Usage Definitions .................................................8-40 

8.11 Oxygen Flow Module Test ..................................................8-41 

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8-1

8-2 



8.1 Overview 

The following is a summary of the testing and calibration procedures detailed in this chapter. 

1045049 

8.2 Recommended Testing after Part(s) Replacement 

Defines the recommended testing to perform on the unit after removal and 

installation of a replacement part. The testing reflects the minimum required to verify 

system performance. 

8.3 Exhalation Port Test 

Characterizes the circuit by analyzing the leak rate of the exhalation port. 

8.4 Total Operating Hours Transfer Procedure 

Transfers the current Total Operating Hours for a unit when 

replacing the Main Control Subsystem (MC), or the memory battery. 

8.5 Blower/Valve Calibration Procedure 

Provides instructions for calibrating the Blower and Valves of the unit 

after major component replacement. 

8.6 Performance Verification 

Verifies that the BiPAP Vision user interface is functioning properly. It is not 

intended to verify specifications, only the operational features are tested. 

8.7 Run-In Cycle Procedure 

This procedure is to be used after servicing the BiPAP Vision as called out in the 

Testing after Part(s) Replacement on page 8-3 and 8-4. The unit will cycle for one half hour 

with specified operating parameters to qualify the repair after a component has been 

replaced. 

8.8 System Final Test 

Verifies that the Vision unit operates within specifications. The intent of this 

procedure is to ensure that the unit functions against performance specifications by 

verification of the internal sensor measurement’s accuracy and the unit’s capability to 

generate and control the required pressures and flow rates of the various operating 

modes. User controls and alarm functions are also tested. 

8.9 PC or Laptop Setup Procedures 

Necessary steps to set up a PC/Laptop for testing or Vent Inop error code extraction. 

8.10 Test Cable Usage Definitions 

8.11 Oxygen Flow Module Test 




8.2 Recommended Testing after Part(s) Replacement 

Purpose 

This chart defines the recommended testing to perform on the unit after removal and installation of a 

replacement part. The testing reflects the minimum required to verify system performance. 

Replacement Item 

Blower/ 

Valve Cal. 

Run-In 

Cycle 

Performance 

Verification 

System 

Final Test 

1. Air Flow Module (AFM) YES YES NO YES 

2. Alarm “B” Option NO YES YES NO 

3. Blower YES YES NO YES 

4. Blower Muffler YES NO NO NO 

5. Bottom Enclosure YES YES NO YES 

6. Cables (any internal) NO NO YES NO 

7. Circulation Fan YES YES NO YES 

8. Display Control (DC) NO YES NO YES 

9. AC Power Cord (any) NO YES YES NO 

10. Fan Muffler NO NO NO NO 

11. Filter Enclosure YES YES YES NO 

12. Filter NO NO NO NO 

13. Front Panel Enclosure NO YES YES NO 

14. Fuses, Domestic NO NO YES NO 

15. Fuses, International NO NO YES NO 

16. Hoses (any internal) YES YES YES NO 

17. ICB Ribbon Cable NO NO YES NO 

18. In-Line Flow Restrictor (ILFR) YES YES NO YES 

19. AC Inlet YES YES NO YES 

20. Liquid Crystal Display (LCD) NO NO YES NO 

21. Main Control (MC) YES YES NO YES 

22. Oxygen Module Assembly (OM) YES YES NO YES 

23. OM Regulator Bowl NO NO NO NO 

24. OM Regulator Filter NO NO NO NO 

25. Main Power Switch NO NO YES NO 

26. Power Supply Subsystem (PSS) YES YES NO YES 

27. Pressure Control (PC) YES YES NO YES 

28. Pressure Relief Valve (PRV) YES YES NO YES 

29. PRV Muffler YES NO YES NO 

30. Rotary Encoder NO YES YES NO 

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8-3

8-4 


Recommended Testing after Part(s) Replacement (Continued) 

31. Rotary Encoder Knob NO NO NO NO 

32. Rubber Feet NO NO NO NO 

33. Top Enclosure NO NO NO NO 

34. Touch Pad NO YES YES NO 

35. Transformer YES YES NO YES 

36. Power Line Filter NO YES NO YES 

37. Audible Alarm NO YES YES NO 

38. EPROM NO YES NO YES 

39. PAV / T NO YES NO YES 

40. Oxygen Manifold/Regulator YES YES NO YES 

41. Oxygen PCA/Flowbody YES YES NO YES 

1045049 

Replacement Item 


Blower/ 

Valve Cal. 

Figure 8-1 

Run-in 

Cycle 


Performance 

Verification 

System 

Final Test


Purpose 



The Exhalation Port Test characterizes the circuit by analyzing the leak rate of the exhalation port. During 

the test, the system learns the intentional exhalation port leak over the complete pressure range. The 

learned leak value is then stored in system memory and is used to perform leak calculations and provide an 

accurate display of patient leak, minute ventilation, and tidal volume in the Data Display Area. When a test 

is performed successfully, the Data Display shows the unintentional leak. The display will appear as “Pt. 

Leak” in the Data Display Area. If the test is not performed or cannot be completed successfully, the system 

is unable to accurately know the intentional leak and will display the total leak value (intentional + unintentional). 

The display will appear as “Tot. Leak” in the Data Display Area. 

NOTE: The Exhalation Port Test should be performed after servicing to ensure the accuracy of 

estimated tidal volume and minute ventilation readings. Accurate minute ventilation 

readings are necessary to ensure the accuracy of the low minute ventilation alarm when 

it is set below 3 L/min. 

NOTE: The Exhalation Port Test is recommended before each use, with circuit changes, with 

changes in the exhalation port, or after servicing. Completing the test ensures the 

accuracy of some displays and alarms. 

Equipment Set-up 

Procedure 

First Install a 6’ smooth inner lumen tubing, then a whisper swivel, and then a pressure pickoff 

port onto the unit outlet. 

Connect a pressure line from the pick-off port to the pressure connection on the Vision unit. 

Occlude the outlet. 

Step 1 Plug in the power cord. The Main Power indicator will illuminate. 

Step 2 Turn the main power switch to the On position and wait for the unit to complete the 

SYSTEM SELF TEST (internal system check). This will take approximately 5 to 15 seconds. 

The TEST EXHALATION PORT screen will then be displayed. 

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8-5

8-6 


Exhalation Port Test (Continued) 

Step 3 Press the Test Exh Port (Test Exhalation Port) soft key. Follow the instructions that appear 

on the screen, then press Start Test. 

1045049 

Test Exh 

Test 

Port 

Exh 

Port 

Languages 

Languages 

EXHALATION PORT TEST 

INSTRUCTIONS: 

1. INSTALL CIRCUIT WITH EXHALATION DEVICE. 

2. OCCLUDE CIRCUIT OUTLET. 

3. PRESS "START TEST" WHEN READY. 

4. KEEP TUBING OCCLUDED UNTIL TEST IS 

COMPLETE. 

Total Operating Time: 22 HRS 

PRESS "MONITORING" TO EXIT 


Figure 8-2 

Exhalation Port Test Instructions 

NOTE: This test can be canceled at anytime by pressing the Cancel Test soft key. 


Start 

Test 

Cancel 

Test



Exhalation Port Test (Continued) 

Step 4 There are seven possible status messages that can appear depending on the outcome of the 

SYSTEM SELF TEST. Follow the instructions for the condition that appears. 

a. TEST COMPLETE 

The circuit displays normal leak conditions at the exhalation (user interface) port. 

b. LOW FLOW, CHECK CIRCUIT, REPEAT TEST 

The circuit displays a lower than normal leak rate at the exhalation port. Check that the vents on 

the exhalation port are not blocked and that the circuit is sound. Replace, in order, the PC, AFM, 

PRV, and ILFR. Repeat the Exhalation Port Test. 

c. EXCESSIVE FLOW, CHECK CIRCUIT, REPEAT TEST 

The circuit displays a higher than normal leak rate at the exhalation port. Assure that the internal 

circuit is properly assembled. Replace, in order, the PC, PRV, and ILFR. Repeat the Exhalation Port 

Test between each replacement. 

d. OCCLUDED EXHALATION PORT, CHECK CIRCUIT, REPEAT TEST 

The leak rate was less than predicted. Check that the exhalation port is not blocked. Replace, in 

order, the PC, AFM, PRV, and ILFR. Repeat the Exhalation Port Test between each replacement. 

e. PROXLINE DISCONNECTED, CHECK CIRCUIT, REPEAT TEST 

The proximal pressure line is disconnected. Check that the internal and external proximal pressure 

line is connected and is not obstructed. Repeat the Exhalation Port Test. 

f. PRESSURE REGULATION ERROR, CHECK CIRCUIT, REPEAT TEST 

Leak test pressures cannot be attained. Check that the internal pressure line is connected and not 

obstructed. Replace, in order, the AFM and PC. Repeat the Exhalation Port Test between each 

replacement. 

g. INTERMITTENT EXCESSIVE FLOW, CHECK CIRCUIT, REPEAT TEST 

The leak rate was intermittently high during the test. Check that the internal and external circuit is 

occluded and properly sealed. Replace, in order, the PRV valve and PC. Repeat the Exhalation Port 

Test between each replacement. 

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8-7

8-8 


8.4 Total Operating Hours Transfer Procedure* 

Purpose 

The following steps must be done to transfer the current Total Operating Hours for a unit. 

Equipment 

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PC / Laptop 

Test Cable (RI P/N 582161) for S/N < 106000 

Test Cable (RI P/N 1004823) for S/N > 106000 and upgraded units for S/N

Figure 8-3 

For Visions with S/N < 106K 

Figure 8-4 

For Visions with S/N > 106K 



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8-9

8-10 


8.5 Blower / Valve Calibration Procedure 

Purpose 

This procedure provides instructions for calibrating the Blower and Valves for the BiPAP Vision system. 

This test will take about 10 minutes or less depending on the software version. 

Note: Unit must be a minimum software revision of 11.8 / 12.4 / 13.4 to successfully pass this test. If 

necessary, upgrade unit. 

Equipment (See Figure 8-3 and 8-4 for cable connections) 

1045049 

Test Cable (Respironics P/N 582161) for S/N < 106K 

Test Cable (RI P/N 1004823) for S/N >106K and upgraded for units for S/N

Blower / Valve Calibration Procedure (Continued) 



Step 5 Wait for the Test Exhalation Port/Language screen to appear. Do not press Monitoring. 

Step 6 Assure that the test orifice and the PRV exhaust are not obstructed. 

Step 7 Type the calibration start code: SJB, on the terminal with no carriage return. 

NOTE: Insure that the calibration start codes are in all capital letters. These will not display on 

the PC or PC/Laptop. 

Step 8 Wait for the calibration process to complete. The terminal will stop updating information and 

the cursor will blink when the process is finished. “Valve Calibration Successful” will be 

displayed. (See below for a description of the Calibration Sequence Summary.) 

NOTE: If calibration is unsuccessful, try the test again. If it fails a second time, follow the guide 

lines on the screen for suggested failure information. 

Step 9 Turn the unit Off and remove the power cord. 

Step 10 Unplug the test cable from unit unless further testing is required. 

Step 11 Remove the test orifice. 

Step 12 Install the top enclosure, unless further testing is required. 

Step 13 If necessary, carefully position the unit on its side and install the PRV muffler enclosure 

Step 14 If necessary, set the unit upright. 

Step 15 Test complete. 

Calibration Sequence Summary 

The first four states are for blower calibration. The blower DAC voltage is increased while the pressure and 

blower speed are monitored to determine the slope and intercept. 

The next two states independently “warm up” the ILFR and PRV valves and then collect four sets of 

operating data on each to use to determine an average value. 

All of this information is stored in memory and is used to ensure that the blower and the valves are able to 

meet the specified requirements. 

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8-11

8-12 


8.6 Performance Verification 

Purpose 

This procedure confirms that the ventilator is functioning properly. It is not intended to verify specifications; 

only operational features are tested. 

Equipment 

Procedure 

1045049 

Test orifice (P/N 332353) 

Pressure tubing 

Smooth inner lumen tubing 

Whisper swivel II (P/N 332113) 

Step 1 First connect the smooth inner lumen tubing to the unit outlet then the whisper swivel and 

finally the test orifice. Connect the pressure tubing from the BiPAP Vision to the test orifice. 

NOTE: If the Vision unit loses power, and power is restored in less than 10 seconds, the unit 

will return to operation at the same settings that were in effect before power was lost. 

Step 2 Turn the unit on. When the Test Exhalation Port/Language Screen is displayed, remove the 

AC power cord from the rear of the unit. Verify that the Ventilator Inoperative visual (wrench 

icon) and the audible alarm is activated. Turn the unit off. Verify that the audible and visual 

alarms are no longer active. 

Step 3 After 15 seconds or more, reinstall the AC power cord, and switch the unit on. 

NOTE: For software versions 11.2 and higher, the “Loss of AC Power” symbol will begin flashing 

in the display area. Press the Alarm Reset to clear and continue. 

Perform the Exhalation Port Test as described in Section 8.3. (After successful completion of 

the test, press the MONITORING hard key to proceed to the Monitoring Screen.) 

Step 4 Press the OPTIONS soft key to access the Options Screen. If an alarm is active, press the 

Reset Hard Key. 


Performance Verification (Continued) 



Step 5 Press the TEST ALARMS soft key to verify that both the audible tone and the alarm 

messages activate for all available alarms. The Ventilator Inoperative and Check Ventilator 

icons should illuminate during the test. The Vision front panel should look like Figure 8-2 

(O 2 Flow, Lo MinVent, Hi Rate, and Lo Rate appear if the oxygen module and optional 

alarms are installed). 

NOTE: Each alarm function has both an audible and visual component. Verify that both 

components are active during the alarm test. If either component is not active, have the 

unit serviced. 

Step 6 Press Monitoring. If the CPAP or PAV/T mode is active, press the MODE hard key, select the 

S/T soft key, and set the parameters as shown below. Activate the new mode. If the S/T Mode 

is active, press the MONITORING hard key then press the PARAMETERS hard key. In either 

case, set the parameters as follows: 

IPAP = 15 cm H 2 O 

EPAP = 5 cm H 2 O 

Rate = 15 BPM 

Timed Insp = 1.0 sec 

Error 

Messages 

Test 

Alarms 

IPAP Rise Time = 0.1 sec 

Alarm Messages 

in Mode/Message 

Area 

Low Leak 

O2 Flow 

Lo MinVent 

Hi Rate 

Lo Rate 

P (cm H O) 2 

Vol (ml) 

Flow (L/min) 

ALARM 

Hi P 

Lo P 

Apnea 

ProxLine Disc 

TOTAL OPERATING TIME: 50 HRS 


Time at P 

49 

hrs 

Reset 

P Regulation 

OPERATING IN: S/T 

Brightness 

Contrast 

Invert 

Figure 8-5 

Alarm Test Screen 

(Oxygen and Optional Alarm Module Installed) 

Illuminated 

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8-13

8-14 


Step 7 Press the ALARMS hard key and set the following alarm parameters. 

1045049 

Hi P = 20 cm H 2 O 

Lo P = 10 cm H 2 O 

Lo P Delay = 20 sec 

Apnea = Disabled 

If you have the optional Alarm Module, set the following additional alarm parameters. 

Lo MinVent = Disabled 

Hi Rate = 40 BPM 

Lo Rate = 10 BPM 

Step 8 Press the MONITORING hard key to return to the Monitoring Screen. Verify the following 

parameters from the Monitoring Screen. (visual inspection) 

The Rate soft key indicator flashes when each timed breath is activated. 

The timed breath is approximately 1 second in duration. 

The IPAP during a timed breath is 15 cm H 2 O. 

The EPAP during a timed breath is 5 cm H 2 O. 

The Timed Breath Rate is 15 BPM as indicated in the Timed Breath Indicator display. 

Step 9 Occlude the test orifice for a few seconds. While viewing the Vision Pressure waveform, create 

a small leak at the test orifice to simulate a spontaneous trigger. This process may have to be 

repeated a few times. Verify that the unit cycles to IPAP and that the Rate Indicator did not 

flash. After the breath is triggered, unocclude the test orifice. 

Step 10 Press the ALARMS hard key to display the Alarms Screen. 

Step 11 Select the Hi P soft key and adjust the parameter to 10 cm H 2 O. Wait for the audible and 

visual alarms indicating a High Pressure alarm. Return the Hi P parameter to 20 cm H 2 O and 

press the Alarm Reset hard key to remove the alarm message. 

Step 12 Open the circuit to atmosphere for approximately 20 seconds to verify the following audible 

and visual alarms. 

The disconnect alarm is activated after a few seconds. Press the alarm silence button and 

continue. 

The Lo P Alarm is activated. 

Occlude the patient outlet on the circuit and press the Alarm Reset hard key to clear both the 

audible and the visual alarms. 

Step 13 Select the Apnea soft key and adjust the parameter to 20 sec. Maintain the occlusion of the 

patient connection for a minimum of 20 seconds to verify that the audible tone and the Apnea 

Alarm Message are activated. Adjust the Apnea setting to the Disabled setting. Press the 

Alarm Reset key to clear the visual alarms. 

Step 14 Test complete. 


Performance Verification (Continued)



BiPAP Vision Performance Verification/Screening Data Sheet 

Serial Number Service Notification 

(Respironics use only) 

Model Number Total Operating Time 

Purpose: 

Results: 

This data sheet is to be used in conjunction with the BiPAP Vision Performance 

Verification. It should also be used whenever a screening procedure is required on the 

BiPAP Vision. 

Test Step Pass Fail 

Ventilator Inoperative Alarm 2 

Exhalation Port Test 3 

Test Alarms 5 

Parameters From Monitoring 8 

Screen 

Spontaneous Breath 9 

High Pressure Alarm 11 

Low Pressure Alarm 12 

Apnea Alarm 13 

Tested By: (print) Tested By: (signature) Date 

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8-15

8-16 


8.7 Run-In Cycle Procedure 

Purpose 

This procedure is to be used after servicing the BiPAP Vision as called out in the Recommended Testing 

after Part(s) Replacement Chart in section 8.2. The unit will cycle for one half hour, with specified operating 

parameters, to qualify the repair after a component has been replaced. 

Equipment / Materials 

Procedure 

1045049 

0.25” test orifice (Respironics P/N 332353) 

pressure tubing 

Step 1 Connect the 0.25” test orifice (Respironics P/N 332353) to the outlet port, and the pressure 

tubing from its port to the pressure input on the BiPAP Vision. 

Step 2 Connect the power, turn the unit On, and set up the following parameters in the S/T Mode. 



Rate = 20 BPM 

Timed Insp = 0.5 sec. 

IPAP Rise Time = 0.1 sec. 

Step 3 Set the following alarm parameters: 

Hi P = 50 cm H 2 O 

Lo P = Disabled 

Lo P Delay = 60 sec. 

Apnea = Disabled 

If the unit has the optional Alarm Module, and/or optional Oxygen Module set the following 

additional parameters: 

Lo MinVent = Disabled 

Hi Rate = 50 BPM 

Lo Rate = 4 BPM 

%O 2 = 21% 


Run-In Cycle Procedure (Continued) 



Step 4 Return to the Monitoring screen and observe that the display values match the set values. 

Step 5 Run the unit for one half hour with the above settings. 

Step 6 Verify that the display values match the set values and that no alarms occurred during this 

time period. If a problem exists, follow the appropriate Troubleshooting Flow Chart in 

Chapter 6 and perform the Run-In Cycle Procedure again before proceeding. 

Step 7 Test Complete. 

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8-17

8-18 


8.8 System Final Test 

Purpose 

This procedure will verify that the Vision unit operates to specifications. The intent is to ensure that the 

unit functions against performance specifications by verification of the internal sensor measurement’s 

accuracy, and the unit’s capability to generate and control the required pressures and flow rates of the 

various operating modes. User controls and alarm functions are also tested. Below are the major activities 

performed within this test procedure. 

1045049 

Set up the Unit for Test Verify Pressure Accuracy 

Measure Flow Accuracy Measure Dynamic Pressure Regulation 

Measure S/T Performance Verify Oxygen Module Operation (if installed) 

Verify Options, Controls, and Alarms Verify PAV/T Mode (if installed) 

Nurse Call/Remote Alarm (if installed) • Earth Restance and Leakage Current (Optional) 

Data and other various information is to be recorded on the System Final Test Data Sheet. 

Equipment 

Flexible, smooth inner lumen tubing (P/N 301016) 

Flowmeter (Appendix A) 

Manometer (Appendix A) 

PC/Laptop (Appendix A) 

Mechanical lung (Appendix A) 

Medical grade Oxygen and regulator (for testing of optional oxygen module only) 

Oxygen analyzer (for testing of optional oxygen module only - Appendix A) 

Variable flow restrictor (adjustable valve) (P/N 1006120) 

Whisper swivel (P/N 332113) 

Phillips screwdriver 

Pressure tubing 

Safety analyzer (Appendix A) 

Test cable (P/N 582161 for serial numbers 105999 and less, P/N 1004823 for serial numbers 

106000 and higher or upgraded units). 

Multiple outlet power strip 

Plug, cap, or stopper 

Pressure pick-off port (0 2 port, P/N 312710) 


System Final Test (Continued) 



CAUTION: Static sensitive components. This procedure must be performed at an ESD approved 

workstation. 

NOTE: Only properly trained service personnel are permitted to perform this procedure. 

Initial Equipment Setup 

(May vary according to equipment used) (Locally sourced flow restrictor) 

Flow Restrictor (1006120) Figure 8-6 Certifier Flow 

Initial Equipment Setup Analyzer (1012598) 

Procedure 

A. Connect Unit to Test Equipment 

Step 1 Remove the top enclosure. 

Step 2 Connect the Test Cable from the PC board (J3), or the Test Cable connector labeled PC, to the PC/ 

laptop com port. 

Step 3 Plug in the AC power cord and verify the MAIN POWER indicator is lit. 

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8-19

8-20 


Step 4 Connect the patient tubing to the outlet of the unit. Place a pressure pickoff port on the other end and 

then connect this to the Flowmeter. Using another piece of patient tubing, connect the outlet of the 

flowmeter to the restrictor valve. Adjust restrictor valve to allow for a small amount of circuit leak. 

Refer to figure 8-3. 

Step 5 Using a Tee fitting, connect the Manometer, the pressure pickoff port, and the Vision pressure port 

together. 

B. Turn on Unit 

Step 1 After the System Self Test is complete, record the Total Operating Time shown on the 

display shown at the bottom of the Test Exhalation Port/Language screen. 

Step 2 Press MONITORING, then press Options. 

Step 3 Verify that Brightness and Contrast can be controlled by pressing the appropriate key 

and turning the adjustment knob. Then adjust both of these for an acceptable display. 

(The Brightness has a small control range, it will not have much affect on the screen). 

Step 4 Press MONITORING to exit. 

C. Set Up Alarms and Scales 

Step 1 Press ALARMS. 

Step 2 After selecting the desired alarm, rotate the adjustment knob, and set each alarm 

according to the following: 

Step 3 If ALARM MODULE B is installed, set the alarms as listed below (they will be 

displayed on the right side of the alarms screen). 

1045049 

ALARM 

Hi P 

Lo P 

Lo P Delay 

Apnea 

ALARM 

Lo Min Vent 

High Rate 

Low Rate 

VALUE 

Disabled 

50 

4 

VALUE 

50 

Disabled 

60 

Disabled 


System Final Test (Continued)




Step 4 Press SCALE. Select the desired scale then rotate the adjust knob . Set each to the 

following: 

Step 5 Press MONITORING to exit. 

D. Set CPAP Pressure 

If the unit is in CPAP mode: 

• Press PARAMETERS 

• Press Set CPAP and adjust the pressure to 5 cm H 2 O 

If the unit is in S/T mode: 

• Press MODE then CPAP. 

• Press Set CPAP and adjust the pressure to 5 cm H 2 O. 

• Press Activate New Mode to enable. 

If the unit is in PAV/T mode: 

SCALE 

P 

Vol 

Flow 

Time Base 

• Press MODE then CPAP. 

• Press Set CPAP and adjust the pressure to 5 cm H 2 O. 

• Press Activate New Mode to enable. 

VALUE 

45 cm H O 2 

1500 ml 

100 L/min. 

9 sec. 

Step 1 On the PC/Laptop type, in sequence, the capital letters SJL to view the system parameters of the 

Vision unit being tested. Note that only the blinking cursor will be displayed. 

(If required, use the PC/Laptop Setup Procedure found in Chapter 8) 

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8-21

8-22 


NOTE: Lo Rate alarm will sound during this test. Press ALARM SILENCE to temporarily 

cancel. 

NOTE: Unit may oscillate when no flow is present. Open the flow restrictor slightly until it 

stops, then slowly close the valve. 

NOTE: After a period of time, the unit will automatically switch to MONITORING. Press 

PARAMETERS to return to the parameters screen for making unit adjustments and 

viewing the displays listed below. 

E. Pressure Accuracy 

Step 1 Adjust the flow restrictor for 0 (+0.5) LPM on the flowmeter. 

Step 2 Record the following unit values on the data sheet: 

a) Set pressure value from Vision display. 

b) Outlet pressure value from Vision display (Bottom number while in parameter) 

c) “Unit Outlet Pressure” on PC/Laptop. 

d) “Patient Pressure” on PC/Laptop. 

e) Manometer pressure 

Step 3 Verify all pressure readings are within specification (i.e. ± 2 cm H 2 O of the 

Manometer reading). 

Step 4 Set the unit pressure for 10 cm H 2 O and repeat steps 2-4. 

Step 5 Set the unit for a pressure of 20 cm H 2 O, adjust the flow restrictor to 30 (± 3) LPM 

and repeat steps 2-4. 

F. Flow Accuracy 

1045049 

Set Pressure set 

Outlet Pressure 

Step 1 Leave the CPAP pressure set to 20 cm H 2 O. 

Step 2 Set the flow restrictor for 0 LPM (+0.5) flow rate. 

Step 3 Record the flow meter reading. 

CPAP 

cm H 2 O 

Step 4 Record the COMPENSATED TOTAL FLOW from the PC/Laptop. 

5 

5 




Step 5 Verify the compensated total flow values are within specification. 

Step 6 Set the flow restrictor for 10, 60, and 120 LPM (± 1 LPM) and repeat steps 3-5. 

Step 7 While at 120 LPM, verify the pressure is 20 cm H 2 O ± 2 cm H 2 O. 

G. Dynamic Pressure Regulation 

Step 1 Turn the unit Off. 

Step 2 Disconnect the flow restrictor from the flow meter. 

NOTE: The test lung should not be connected at this time. 



Step 3 Connect a whisper swivel to the patient tubing at the output of the flow meter and plug 

the end. Turn the unit On. Wait for the Test Exhalation Port Screen to appear. 

Step 4 Press Test Exh Port then Start Test. Follow the on screen instructions as appropriate until 

“TEST COMPLETE” is displayed. 

NOTE: Do not block the slots on the Whisper Swivel while the Exhalation Port Test is in 

progress. 

Step 5 Press MONITORING to exit then press PARAMETERS. 

Step 6 Ensure that the unit is still in CPAP mode, set at 20 cm H 2 O. 

Step 7 Remove the plug and connect the test lung. (Compliance set to 0.05, Parabolic Resistor 

RP 20). See Figure 8-7 for setup instructions. 

Step 8 Press MONITORING and verify that the unit is in “Waveform” display. 

Step 9 Manually operate the test lung to create a uniform waveform on the Vision flow display 

with peaks approaching 100 L/Min and a rate of approximately 30 BPM (one every two 

seconds). While doing this, observe the manometer reading. 

Step 10 Verify the manometer reading to be within ± 2 cm H 2 O of the unit’s set value. 

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8-23

8-24 


1045049 

Figure 8-7 


H. S/T Performance 

Step 1 Press MODE, then S/T. Leave the test lung connected. 

Step 2 Select and set the following. 

• IPAP = 35 cm H 2 O 

• EPAP = 5 cm H 2 O 

• Rate = 10 BPM 

• Timed Insp = 2.5 sec 

• IPAP Risetime = .05 sec 



Step 3 Press Activate New Mode when ready to continue. Allow the unit to cycle a few times. 

Step 4 Verify that the unit is cycling between low and high pressure by observing the 

waveforms on the Vision pressure display. 

Step 5 Verify the Manometer readings for IPAP pressure and EPAP pressure are within 

± 2 cm H 2 O of their settings. 

Step 6 Record the BPM. Acceptance range is 9.3 to 10.8 BPM. 

I. Options and Controls 

Step 1 Press MONITORING then press Options. 

Step 2 Press Invert. Verify function, and press again to return. 

Step 3 Press Bar Graph. Verify that the screen displays bar graphs. Press again to return to waveform. 

Step 4 Press Test Alarms. An audible tone should occur along with alarm messages displayed briefly at 

the top of the screen. The Check Vent and Vent Inop symbols will light. 

Step 5 Press Error Messages. Observe and record any displayed messages. Then press Clear 

Error Messages. 

Step 6 If desired, press the key for Time at P to reset. 


Step 7 Press System Info and record the software version, if the Oxygen Module is installed, and 

which Alarm Module is installed. 

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8-25

8-26 



Step 8 Press MONITORING. 

Step 9 Press FREEZE/UNFREEZE and observe that the graphic displays have stopped updating. 

Press FREEZE/UNFREEZE again to resume. 

Step 10 Press SCALE. Press P and change the scale by rotating the knob and observe a change in 

the displayed waveform. Set back to 45 cm H 2 O. Press MONITORING to exit. 

J. Alarms 

Step 1 Disconnect the manometer tubing from the Vision Pressure Port. In a few seconds, an alarm 

will sound and ProxLine and / or Lo P Disc will be displayed in the Alarm message 

window at the top of the screen. 

Step 2 Replace the tubing and the alarm will be silenced. Press ALARM RESET and the alarm will 

reset. 

Step 3 Pull the AC power cord from the unit. An alarm should sound and the “wrench” icon will 

light. 

Step 4 Turn the unit Off, wait for the alarm to stop and then wait 10 seconds minimum. 

Step 5 Plug the AC power cord into the unit and turn the unit On. 

Step 6 Verify that the unit powers up without alarming. 

NOTE: For software versions 11.2 and higher, the “Loss of AC Power” indication will be flashing in the 

display area. Press the Alarm Reset to clear and continue. 

Step 7 Turn off the unit. 

1045049 




BiPAP Vision Oxygen Module Testing for S/N 1007401-108343 

Note: This test should only be performed once for affected units. If the Oxygen Module has been replaced with 

a new type, or if your unit does not have a serial number on the oxygen module label, this test does not need 

to be performed. 

Purpose: 

1. To perform an additional test on BiPAP Vision units from serial number 107401 to 108343 

(inclusive). This procedure must be done the first time a Vision that falls within the above listed 

serial number range is returned for service for any reason. This procedure is to be performed 

after the unit passes system final test found in the service manual. 

2. This procedure must also be performed on any Oxygen Module repair kit from serial number 

300000 to 301249 (inclusive) that has been installed into any unit. The serial number is located 

on the cover. Repair parts 582142 and 1004977 are made up of these serial numbers, along with 

the production units listed above. 

This test will verify the ability of the oxygen delivery subassembly to adequately supply the required flow 

needed to yield a specified oxygen concentration at the maximum unit flow rate. Some of these may have 

had a vendor assembly problem. Any faults will require the replacement of the Oxygen Module assembly. 

Test Equipment: 

Same as used with oxygen testing found in step K of the System Final Test. 

Test Setup: 

See figure 8-8, except substitute the flow restrictor in the circuit for the test lung. Begin with a small leak. 

Procedure: 

1.) Turn the unit on. 

2.) After the System Self Test completes, press MONITORING. 

3.) Press PARAMETERS button and set the following unit parameters: 

IPAP = 40 cm H2O 

EPAP = 20 cm H2O 

RATE = 10 BPM 

TIMED INSP. = 3.0 sec 

IPAP RISETIME = .05 sec 

O2% = 21% 

1045049 

8-27

8-28 


4.) Slowly open the flow restrictor and verify the flowmeter reads a minimum of 130 LPM for four 

consecutive breaths during the IPAP portion of the cycle. If the unit activates the “Disconnect” 

alarm, it may be necessary to adjust the flow restrictor valve to a lower flow and slowly re-open to 

reach this flow rate. 

5.) Set the O2% parameter to 100% and wait for oxygen analyzer reading to stabilize. 

6.) For the unit to pass, the oxygen analyzer reading must remain between 90% and 109% inclusive for 

four consecutive breaths. If any unit fails, the Oxygen Module subassembly must be replaced and the 

unit retested. 

7.) When complete, set the unit parameters as follows: 

IPAP = 15 cm H2O 

EPAP = 5 cm H2O 

RATE = 10 BPM 

TIMED INSP. = 1.0 sec 

IPAP RISETIME = .05 sec 

O2% = 21% 

8.) Press MONITORING button. 

9.) Close the oxygen tank valve. 

10.) Turn power off and disconnect test equipment. 

11.) Test Complete. 

1045049 


K. Oxygen Module Operation 



Note: To perform this test it is necessary that the Vision unit being tested have at least 11.8 / 12.4 / 13.4 software. If 

your Vision unit has earlier software, it is mandatory that it be upgraded before performing this test. 

Note: See Figure 8-8 for assistance in connecting oxygen analyzer. 

WARNING: Oxygen supports combustion. Do not use oxygen while smoking or in the presence of an open 

flame. 

WARNING: Never use the analyzer to measure gas with a high oxygen content following use on air with an oil 

vapor content. The oil vapor will contaminate the tubing and may result in a fire on contact with 

high oxygen levels. 

Oxygen Module Test Procedure 

Step 1 

Prior to performing this test, a visual inspection should be made of the internal components of the 

oxygen delivery system including tubing, to ensure that there are no faulty items. 

Step 1A Connect the 6 foot smooth inner lumen tubing from the outlet of the Vision, to the Whisper Swivel, 

then to a pressure pick-off port (O 2 port) and then to the TTL Lung (or equivalent). A small length of 

tubing (approximately 6 inches) may be needed between the pressure pick-off port and the test lung. 

Connect the oxygen analyzer cell in the patient circuit. 

Put the pressure tubing from the pick-off port to the unit’s patient pressure connection. 

Or, Using a “T” connector, connect the pressure pick-off port, the unit’s patient pressure connection 

and the oxygen analyzer inlet together, whichever applies. 

Set the test lung to have a compliance of 0.04 and a parabolic resistance of 20. 

Step 2 Turn on the Vision unit. 

Step 3 On the unit, press Parameters and set the following unit parameters. 



RATE = 15 BPM 

Timed Insp. = 1.0 sec 

IPAP Risetime = .05 sec 

O 2 % = 21% 

1045049 

8-29

8-30 


1045049 

Figure 8-8 




Step 4 Press Monitoring. Ensure that the tidal volume reading on the Vision (Vt) is at 500 ml, +/- 20 ml (480 to 

520 ml). If not raise or lower the IPAP pressure until the proper tidal volume reading is obtained. 

Step 5 Connect the O 2 line to the Oxygen Module. Open the O 2 cylinder valve. Ensure that the O 2 regulator 

is set at 50 psi. 

Step 6 Wait for the Oxygen Analyzer to stabilize and verify that the reading is 18% to 24%. 

Note: Readings should be stable after 8 to 10 breaths. Some variance in the reading may occur, 

depending on the quality of the analyzer being used. 

Step 7 Press Parameters then set % O 2 and adjust for 30% O 2 level. Wait for the Oxygen Analyzer to stabilize 

and verify that the reading is between 27% and 33% (inclusive). If the tidal volume reading on the 

Vision falls out of the acceptable range, adjust the IPAP pressure until the tidal volume falls within the 

acceptable range before taking the reading. 

Step 8 Set the O 2 to 100%. 

Step 9 Close the O 2 cylinder valve. Disconnect the Oxygen hose from the back of the Vision. 

Step 10 The unit should alarm for no O 2 Flow at 15 Breaths or less. 

Step 11 Reconnect the Oxygen hose to the back of the Vision and Open the O 2 cylinder valve, set the O 2 to 

40% and press Alarm reset. Verify that no alarms exist after 8 breath cycles. 

Step 12 Wait for the Oxygen Analyzer to stabilize and verify that the reading is between 36% and 44% 

(inclusive). If the tidal volume reading on the Vision falls out of the acceptable range, adjust the IPAP 

pressure until the tidal volume falls within the acceptable range before taking the reading. 

Step 13 Set the unit for 60% O 2 . Wait for the Oxygen Analyzer to stabilize and verify that the reading is 

between 54% and 66% (inclusive). If the tidal volume reading on the Vision falls out of the acceptable 

range, adjust the IPAP pressure until the tidal volume falls within the acceptable range before taking 

the reading. 




the reading. 




the reading. 

Step 16 Close the O 2 cylinder valve. Disconnect the O 2 input line. 

NOTE: If O 2 Module Test Fails, perform the “Oxygen Flow Module Test” found in section 8.11. Then re-run step 

K above. 

1045049 

8-31

8-32 



L. PAV / T mode (if installed) 

Step 1 Select Mode. 

Step 2 Select PAV/T. 

Step 3 Activate the PAV/T mode and verify the mode features are displayed on the screen and that 

no errors or alarms occur. 

NOTE: No further testing of the PAV/T mode is needed since the functioning of the PAV/T 

mode is directly linked to the S/T mode through software. The S/T specifications 

were verified earlier in the system final test. 

Step 4 Turn off the unit, disconnect the test circuit, and remove the power. 

Step 5 Install the top enclosure. 

M. Earth Resistance 

Step 1 Measure and record the earth resistance value. Test current is 25 amps. The value must be 

less than 0.10 Ohms (W) to pass. 

N. Earth Leakage Current 

Step 1 Measure and record the Normal Pole, No Earth, L2 earth leakage current. The value must 

be less than 300 microamps to pass. 

Step 2 Measure and record the Reverse Pole, No Earth, L2 earth leakage current. The value must 

be less than 300 microamps to pass. 

Step 3 Measure and record the Reverse Pole, No Earth, No L2 earth leakage current. The value must be less 

than 1,000 microamps to pass. 

Step 4 Measure and record the Normal Pole, No Earth, No L2 earth leakage current. The value must be less 

than 1,000 microcamps amps. 

1045049 





O. BiPAP Vision Nurse Call / Remote Alarm Feature Testing ( for units s/n greater than 

106000 only). (optional test) 

Note: Refer to chapter 3 of this manual for details of the operation of this feature. 

Purpose: 

This test verifies the operation of the Nurse Call/Remote Alarm output connector on the rear panel of the BiPAP 

Vision unit. This is an optional test and is provided to use as specified by internal protocol. The option 1,2 and 3 

tests can be performed independently or as a whole, depending on requirements. The unit is shipped from the factory 

set at the option 2 setting. 

Equipment: 

Fluke DVM, or equivalent 

0.25” Test Orifice (p/n 332353), or occluded patient circuit 

Jumper Location Photo: JP2 JP1 

Option 1 Test (Remote Alarm) 

1. JP1 and JP2 on the MC board are set at 2,3. 

2. Using a DVM and the unit turned off, measure the continuity across the High and Low of the Nurse Call/ 

Remote Alarm output connector. Value should be approximately 48.6K to 53.7K. 

3. Place the test orifice on the unit. Turn the Vision on and activate any patient alarm. (For example, the Apnea 

alarm could be set to 20 seconds) 

4. Measure the continuity on the same connector and it now should be an open circuit. 

5. Turn unit off. 

1045049 

8-33

8-34 


Option 2 Test (Nurse Call, normally closed setting) 

1. JP1 on the MC board is set at 2,3. JP2 is set at 1,2. 


Remote Alarm output connector. A closed circuit should be measured. 

3. Place the test orifice on the unit. Turn the Vision on and activate any patient alarm (For example, the Apnea 

alarm could be set to 20 seconds). 

4. Measure the continuity on the same connector and it now should be an open circuit. 


Option 3 Test (Nurse Call, normally open setting) 

1. JP1 and JP2 on the MC board are set to 1,2. 


Remote Alarm output connector. An open circuit should be measured. 

3. Place the test orifice on the unit. Turn the Vision on and activate any patient alarm (For example, the Apnea 

alarm could be set to 20 seconds). 

4. Measure the continuity on the same connector and it now should be a closed circuit. 


Upon completion, set the unit to the desired option. 

Q. Final Test Data Sheet 

Step 1 Sign and date completed Final Test Data Sheet. 

1045049 



BiPAP Vision Final Test Data Sheet 

Serial Number Model Number 

Total Operating Time Service Notification 

Power Indicator and LCD Controls 

Step Control Pass Fail 

A-3 Power Indicator 

B-3 Brightness 

B-3 Contrast 

123456789012345 

123456789012345 

123456789012345 

123456789012345 

F-2 to 0 LPM -5 to 5 LPM 

123456789012345 

123456789012345 

123456789012345 

123456789012345 



Pressure Accuracy (see step E-3 for guidlines) 

Step Pressure Set Outlet Unit Patient Manometer Spec Pass Fail 

E-2 5 cm H 2 O +/- 2 cmH 2 O 

E-4 10 cm H 2 O +/- 2 cmH 2 O 

E-5 20 cm H 2 O +/- 2 cmH 2 O 

Flow Accuracy 

Step Flow Setting Flowmeter Compensated Pressure Specification Pass Fail 

Total Flow 

F-5 

123456789012345 

123456789012345 

123456789012345 

123456789012345 

123456789012345 

123456789012345 

123456789012345 

123456789012345 

123456789012345 

123456789012345 

123456789012345 

123456789012345 

123456789012345 

123456789012345 

12345678901234567890123456789012123456789012 

12345678901234567890123456789012123456789012 

12345678901234567890123456789012123456789012 

12345678901234567890123456789012123456789012 

12345678901234567890123456789012123456789012 

F-6 10 LPM 4.2 to 15.8 LPM 

F-6 60 LPM 50.2 to 69.8 LPM 

F-6 120 LPM 105.6 to 134.4 LPM 

F-7 120 LPM 18.0 to 22.0 cm H O 2 

Dynamic Pressure Regulation 

Step Test Pass Fail 

G-4 Exhalation Port 

G-9 Flow Waveforms 

G-10 Manometer Reading (Spec = +/- 2 cm H 2 O) 

1234567890123456 

1234567890123456 

1234567890123456 

1234567890123456 

S/T Performance 

Step Test Reading Specification Pass Fail 

H-4 Cycling Visual 

H-5 

H-6 

IPAP/EPAP 

BPM 

+/- 2 cm H O 2 

9.3 to 10.8 BPM 

1045049 

8-35

8-36 


Options and Controls Error Messages System Information 

Step Pass Fail Step Type Codes Step Item Info. 

I-2 to I-10 I-5 Error I-7 Software Version 

I-5 MCS I-7 Oxygen Module 

Alarms I-5 PAS I-7 Alarm Module 

Step Pass Fail I-5 DCS 

J-1 to J-6 

Oxygen Module (if installed) 

Step Oxygen Set Point Oxygen Analyzer Specification Pass Fail 

K-6 21% 18.0 to 24% 

K-7 30% 27.0 to 33% 

123456789012345678901234567890121234567890123456789012345678901 

123456789012345678901234567890121234567890123456789012345678901 

123456789012345678901234567890121234567890123456789012345678901 

K-10 Alarm Activates 

123456789012345678901234567890121234567890123456789012345678901 

K-12 40% 36 to 44% 

K-13 60% 54 to 66% 

K-14 80% 72 to 88% 

K-15 100% > 90% 

PAV/T Mode (if installed) 

Step Pass Fail 

L-3 

Earth Resistance and Leakage Current (Optional) 

Step Test Reading Specification Pass Fail 

M-1 Earth Resistance < 0.100 Ohms 

N-1 Norm. Pol, No Earth, L2 < 300 microamps 

N-2 Rev. Pol, No Earth, L2 < 300 microamps 

N-3 Rev. Pol, No Earth, L2 < 1,000 microamps 

N-4 Norm Pol, No Earth, No L2 < 1,000 microamps 

Nurse Call/Remote Alarm (optional test for S/N > 106000) 

Step 

P 

Pass Fail 

Testing Verification 

Tested By: (Full Signature) Date 

1045049 



8.9 PC / Laptop Setup Procedure 

Purpose 



This procedure is to be used to set up the PC / Laptop required for testing and troubleshooting of the BiPAP 

Vision. 

Note: The Vision requires no special data acquisition software. All necessary software is contained within 

the unit. 

Equipment 

PC/Laptop Computer 

Serial Cable 

Test Cable for serial number 105999 and lower (RI P/N 582161) 

Test cable for serial numbers 106000 and higher (RI P/N 1004823), or upgraded hybrid units. 

Test cable for upgraded hybrid units also required (RI P/N 1004699) 

Note: For any unit 105999 and lower that has had a new MC board installed, test cable 1004823 

will be used. Test cable 582161 will still need to be used on the DC board. 

Equipment Setup 

Step 1 Connect one end of the test cable to the RS-232 communications port on the PC/laptop. 

Note: When connecting to a PC/Laptop, the 9 pin to 25 pin connector supplied with the test cable 582161 is 

not required. 

Step 2 For S/N 105999 and lower: Connect the proper end of the test cable (582161) to the desired 

subsystem: (J3) on the Pressure Control (PC) and Main Control (MC) or (J5) on the Display 

Control (DC). 

For S/N 106001 and higher: Connect the other end of the test cable (1004823) to the rear panel 

of the Vision and connect a standard computer cable to the desired selection. 

For upgraded hybrid units connect ribbon cable (1004699) to the desired selection of test cable 

(1004823) . 

Step 3 Turn on the PC / Laptop. 

Operating System Setup 

A. Microsoft Windows ® with Hyperterminal. 

Step 1 Open the following: 

Start 

Programs 

Accessories 

Hyperterminal 

Hyperterminal 

Step 2 From Connection Description, name the file if it is to be saved, select the umbrella with phone 

icon, then click OK. 

1045049 

8-37

8-38 


Step 3 In Connect To, select COM1 in Connect Using, then click OK. 

Step 4 In COM1 Properties, Port Settings, set the following: 

1045049 

Bits per Second; 19,200 

Data Bits; 8 

Parity; None 

Stop Bits; 1 

Flow Control; Xon / Xoff. 

Step 5 Click OK to activate the settings. At this point, a blinking cursor will appear on the screen. 

Step 6 If necessary, check the ASCII settings. Go to File, Properties, Settings, ASCII Setup. 

Step 7 Enter the appropriate command for the desired selection below. No typed letters will appear 

on the PC or Laptop. Data will appear after the code is entered. 

Step 8 If screen rolling go to: File, Properties, Settings, Emulation, VT52, OK 

Note: For an existing Vent Inop condition, the MC and DC will output full screens of information. 

The PC only outputs one line of error code information. No command and needs to be entered. 

During normal operation, the full command needs to be entered. 

B. Microsoft Windows ® V. 3.1 

Step 1 From Program Manager, open Accessories. 

Step 2 From Accessories, open Terminal. 

Step 3 Under Settings, open Terminal Emulation then select DEC VT-52, and click OK. 

Step 4 Again under Settings, open Terminal Preferences then set the following: 

Step 5 Click OK 

Line Wrap; On 

Columns; 80 

Cursor; Block, Blink 

Show Scroll Bars 

Use function arrows and control (Ctrl) keys for Windows. 


Step 6 Again under Settings, open Communications then set the following: 

Step 7 Click OK 

Baud Rate; 19,200 

Data Bits; 8 

Stop Bits; 1 

Parity; None 

Flow Control; Xon / Xoff 

Connector; COM 1 or COM 2 (which ever is being used). 

Step 8 Turn on the Caps Lock. 



Step 9 Enter the appropriate command for the test being performed. See the list of commands 

on the next page. 

Commands Options: 

SJO Transfer of total operating hours (MC subsystem connection). 

SJB Blower/valve calibration (PC subsystem connection). 

SJL System final test and limited PC function (PC subsystem connection). 

SJP PC error code info, including operating parameters (PC subsystem connection).* 

SJM MC error code information (MC subsystem connection).* 

SJD DC error code information (DC subsystem connection).* 

SJE Check Vent error code history (MC subsystem connection). 

SJC For determining type of breath triggering (MC subsystem connection). 

* If the unit is in a Vent Inop condition, the current error will automatically appear. 

1045049 

8-39

8-40 


8.10 Test Cable Usage Definitions 

For Vision units serial number

8.11 Oxygen Flow Module Calibration 



Purpose: 

To field adjust the zero flow voltage on the main circuit board of the Oxygen Module Assembly. This test can be 

performed on any Oxygen Module that is suspected to be out of tolerance. The Oxygen Module testing in the 

System Final Test should be performed after this test is completed to confirm this module is now operational. If 

acceptable, the complete System Final Test needs to be performed. 

Equipment: 

Digital Multimeter, Fluke 87 or equivalent (3 ½ digit) 

Equipment Set Up: 

1. Remove the complete oxygen module assembly (except the ground wire and ribbon cable) to be able to easily 

perform this test. The assembly can then set on the table next to the Vision unit. 

2. Connect the DVM to TP 9 with respect to TP 13 (ground). 

Procedure: 

1. Turn the Vision unit on. 

2. Allow the unit to complete the “System Self Test In Progress”. Do not put the unit into Monitoring mode. 

3. Adjust R41 for a value of 0.225 to 0.235 volts DC. 

4. Re-assemble unit (if necessary) 

NOTE: If the measured Oxygen concentration is still not in specification after completion of this test, follow 

standard repair practices to obtain acceptable results. 

1045049 

8-41


Chapter 9: Option Installation Instructions 

Chapter 9: PAV/T or EPROM Upgrade 

Installation Instructions 

9.1 PAV/T Mode or EPROM 

Upgrade Installation.................................................................. 9-2 

9.2 Oxygen Baffle Installation 

Instructions (for units S/N

9-2 


9.1 BiPAP Vision PAV / T Mode or EPROM Upgrade Installation 

1045049 

Included in Upgrade Kits Tools Required 

EPROM (DC or DCS) Phillips screwdriver 

EPROM (PC or PAS) Long-shaft, small, flat-blade 

EPROM (MC or MCS) Extraction Tool 

Alarm B PAL (For PAV/T only) 

NOTE: For PAV/T mode, the Alarm B PAL on the MC board will also need to be changed. 

CAUTION: To ensure proper operation of the unit, the MC, PC, and DC EPROM’s MUST be the same 

revision. 

Procedure 

Removed / Installed During Process 

Top enclosure 

Front panel enclosure 

Display Control Subsystem (DC), partially 

Pressure Control Subsystem (PC) 

EPROM (DC) 

EPROM (PC) 

EPROM (MC) 

Alarm B PAL (install only if not already a PAV/T unit) 

WARNING: Electrical shock hazard: Disconnect the electrical supply before attempting to make any 

repairs to the device. 

CAUTION: Electrical components used in this device are subject to damage from static electricity. 

Repairs made to this device must be performed only in an antistatic, ESD-protected 

environment. 


EPROM Upgrade or PAV / T Installation (Continued) 

Step 1 Installing the EPROM Upgrade or PAV/T Mode 



NOTE: Each EPROM in the RP kit is labeled for identification purposes. During this procedure, 

ensure that the correct EPROM has been identified for each installation. 

a. Locate the new EPROM for the DC. 

b. Remove the DC. Using an appropriate extraction tool, 

remove the existing EPROM. 

NOTE: It may be possible to replace this EPROM by partially removing the DC Board. Leave the 

keypad and LCD connections attached and remove the retaining screws to be able to 

carefully rotate the board upwards to expose the EPROM side. 

NOTE: If necessary, store the removed EPROM in an approved anti-static bag or box. 

c. Carefully insert the new DC EPROM. 

NOTE: Ensure proper orientation before insertion. Flat edge of EPROM to the flat edge of 

the socket. 

d. Re-secure the DC to the front panel. 

e. Locate the new EPROM for the PC. 

DCS 

EPROM 

S/N 106K, or upgraded 

Figure 9-1 

Location of the DC EPROM 

f. Place the PC on an appropriate work surface. Using an appropriate extraction tool, remove 

the existing EPROM. 

1045049 

9-3

9-4 


NOTE: If necessary, store the removed EPROM in an approved antistatic bag or box. 

1045049 

g. Carefully insert the new PC EPROM. 

Figure 9-2 

Location of the PC EPROM 

NOTE: Ensure proper orientation before insertion. Flat edge of EPROM to the flat edge of the 

socket. 

h. Set the PC aside for installation later in this procedure. 

i. Locate the new EPROM and Alarm B PAL (PAV/T mode only) for the MC. 

j. Using an appropriate extraction tool, remove the existing EPROM from U46. 



(S/N 106K, or upgraded) 

PAS 

EPROM


MCS EPROM 



NOTE: If necessary, store the removed EPROM in an approved antistatic bag or box. 

k. Carefully insert the new MC EPROM. 

l. If necessary, remove the Alarm PAL (PAV/T mode installation only). 

m. Carefully insert the new Alarm B PAL (PAV/T mode installation only). 

NOTE: Ensure proper orientation before insertion. Flat edge of EPROM to the flat edge of 

the socket. 

Step 2 Testing 

Alarm PAL 

Figure 9-3 

Location of the MC EPROM 

Alarm PAL MCS EPROM 

(S/N 106K, or upgraded) 

To ensure the integrity of the unit, the Run-In Cycle and the System Final Test found in 

Chapter 8 must be performed. 

1045049 

9-5

9-6 


9.2 BiPAP Vision Oxygen Baffle Installation Instructions 

(P/N 1004705) 

Purpose 

To provide the necessary information to install the Oxygen Baffle into BiPAP Vision units less than serial 

number 1006001. 

Oxygen Baffle Description 

The oxygen baffle provides a better mix of oxygen and air to improve the Air Flow Module (AFM) flow 

measurements. 

1045049 

Oxygen Baffle 

▲ 


Procedure 



1. Remove: 

• Top Enclosure 

• Front Panel 

• AFM 

• Oxygen module outlet tubing support bracket (no longer needed) 

• “T” tubing (no longer needed) 

• 22mm coupling at the Oxygen Module outlet (no longer needed) 

Oxygen tubing support bracket 

Remove these two screws. 

Oxygen Module Tubing 

“T” Connection 

22mm Coupler 

1045049 

9-7

9-8 


2. On the AFM assembly, install the two nylon washers provided in the kit under the two mounting 

screws for the AFM flowbody to allow proper clearance for the new Oxygen Baffle. 

• Remove the two Phillips screws that hold the flow body to the circuit board. Be careful not 

to cause any damage to the thermistor wiring connection. 

• Place the two nylon washers between the AFM flowbody and the circuit board. 

• Install the screws and securely tighten. 

1045049 


Nylon Washers (2) 

AFM Mounting Screws (2) 

New, Final AFM Assembly 

Nylon Washers (2)



3. Place the Oxygen Baffle, as far as possible, onto the ILFR with the oxygen inlet port pointing directly 

upwards and the flow direction arrow towards the front of the unit. 

Oxygen Baffle 

Flow Direction Arrow 

4. While keeping the AFM lifted slightly upwards, gently insert it into the Oxygen Baffle outlet until the 

AFM is aligned with its three mounting posts on the bottom enclosure. A back and forth motion may 

be required. Push down on the AFM circuit board at the 3 mounting post locations to secure it into 

place. 

5. Re-install: 

• Remaining AFM connections 

• Oxygen tubing to baffle 

• Front enclosure 

• Top enclosure 

AFM Insertion 

NOTE: Make sure that no tubing for 

the AFM is “kinked” 

6. Perform the BiPAP Vision System Final Testing from Chapter 8 of the service manual. 

1045049 

9-9


Chapter 10: Summary of Upgrades 

Chapter 10: Summary of Upgrades for 

Repairs of Vision units with 

Serial Numbers 100500 to 

106000 

10.1 Summary of upgrades for repairs of Vision units with serial 

numbers 100500 to 106000 ..................................................................... 10-2 

10.2 Repair Kits No Longer Manufactured ................................................. 10-5 

10.3 Installation/Upgrade Instructions for Repair Parts 1004713 

and 1000356 for serial number units less than 106001....................... 10-6 

1045049 

10-1

10-2 


10.1 Summary of upgrades for repairs of Vision units with serial numbers 

100500 to 106000 

Note: For any of the following upgrades, the new Nurse Call/Remote, RS-232, Oxygen 

Baffle, and Ground Stud will not be implemented. Existing Keypad and 

labeling will remain the same. Language additions are only available in version 

13.0 and higher. A non-PAV and PAV kits will be available. 

10.1.1 Upgrade #1 – P/N 1004713, RP-Vision PC/MC Upgrade 

(without PAV) (2 Board Upgrade) 

For replacement of the PC (582146) or MC (582140) in s/n’s 100500 to 105999 

without PAV option. The following items will be included in this kit: 

a) MC board and version 12 EPROM 

b) PC board and version 12 EPROM 

c) DC version 12 EPROM 

d) DC ICB connector (must be soldered onto DC board) 

e) New ICB cable 

f) Revised longer AFM harness 

g) Revised longer Power harness 

h) PC/MC board spacers 

i) Nut for MC center board spacer 

j) Pressure tubing 

k) Cable clamps 

l) Screw for center cable clamp 

m) MC ground screw 

n) Top cover screws 

10.1.2 Upgrade #1A – P/N 1000356, RP-Vision PC/MC Upgrade (with PAV) 

For replacement of the PC (582146) or MC (582140) in s/n’s 100500 to 105999 

with PAV option. The following items will be included in the this kit: 

a) MC board and version 12 PAV EPROM 

b) PC board and version 12 PAV EPROM 

c) DC version 12 PAV EPROM 

d) DC ICB connector 

e) New ICB cable 

f) Revised longer AFM harness 

g) Revised longer Power harness 




1045049 








10.1.3 Upgrade #2 – P/N 1004714, RP-Vision DC Upgrade (without PAV) 

(3 board upgrade) 

For replacement of the DC (582133) to add the additional languages in s/n’s 

100500 to 105999 without PAV, the following items must be installed and will 

be included in this kit (note that new PC and MC boards are also installed). 

If necessary, a new test cable (1004823) and RS-232 cable (1004699) will also 

have to be ordered (refer to Section 8.10 for further details). 

a) DC board and 13 EPROM 

b) PC board and version 13 EPROM 

c) MC board and version 13 EPROM 

d) Revised longer AFM cable 

e) Power cable, PSS to PC 

f) Power cable, PC to DC 

g) ICB cable 








10.1.4 Upgrade #2A – P/N 104707, RP-Vision DC Upgrade (with PAV) 

For replacement of the DC (582133) to add the additional languages in s/n’s 

100500 to 105999 with PAV, the following items must be installed and will 

be included in this kit (note that new PC and MC boards are also installed). If 

necessary, a new test cable (1004823) and RS-232 cable (1004699) will also have to 

be ordered. 

a) DC board and 13 PAV EPROM 

b) PC board and version 13 PAV EPROM 

c) MC board and version 13 PAV EPROM 

d) Revised longer AFM cable 

e) Power cable, PSS to PC 

f) Power cable, PC to DC 

1045049 

10-3

10-4 


1045049 

g) ICB cable 





l) Screw to center cable clamp 



10.1.5 Upgrade #3 – P/N 1000286, RP-EPROM Upgrade Kit (without PAV) 

This kit provides a software only update to provide new features to units s/n’s 

100500 to 105999. The O 2 % parameter will be retained when switching between 

modes of operation, pressure increase from 10cm H 2 0 to 15cm H 2 0 during dis 

connect alarm conditions, and the revised alarm sounds for different alarms will 

be implemented.* 

The following items are included in this kit: 

a) MC version 11 EPROM 

b) PC version 11 EPROM 

c) DC version 11 EPROM 

10.1.6 Upgrade #3A – P/N 1003524, RP-EPROM Upgrade Kit (with PAV) 

This kit provides a software only update to provide new features to units s/n’s 

100500 to 105999 along with the PAV option. The O 2 % parameter will be retained 

when switching between modes of operation, pressure increase from 10cm H 2 0 

to 15cm H 2 0 during disconnect alarm conditions, and the revised alarm sounds 

for different alarms will beimplemented.* 

The following items are included in this kit: 

d) MC version 11 PAV EPROM 

e) PC version 11 PAV EPROM 

f) DC version 11 PAV EPROM 

g) Alarm B option PAL (not used for units already having PAV) 

* 5 beep tone sequence for Patient Alarms 

3 beep tone sequence for Check Vent Alarms 

Soft click for an attempt to change a selection that is out of range. 

Original solid tone for Vent Inop Alarms 




10.2 Repair Kits No Longer Manufactured 

The following table is a listing of the repair kits that will no longer be available. It also 

gives a description to the reasoning behind the decision and the replacement kit to be 

used as a new substitute. 

RP Kit No Longer Reasoning Replacement Kit to be 

Manufactured Used in Place of This 

Circulation Fan Muffler, Replaced language specific 1005618, Circulation Fan 

French (1000741) items with the international Muffler International. 

Spanish (1000738) symbols style. 

German (1000729) 

EPROM Upgrade (582180) New Kit created to avoid 1000286, Vision EPROM 

confusion. Kit (non PAV) for S/N 

10-6 


10.3 Installation/Upgrade Instructions for Repair Parts 

1004713 and 1000356 (PC/MC Upgrade, with and without PAV, for 

serial number units less than 106000) 

1045049 

Caution: All work is to be done following proper ESD guidelines. 

Note: The original Total Operating Hours should be recorded, if possible, to enter onto the new unit 

when this upgrade is complete. 

Additional Items Required: 

• Ribbon Cable used for testing (RI # 1004699) 

• BiPAP Vision Service Manual (RI # 582160) 

• Test Cables (RI # 582161, and 1004823) 

• Other miscellaneous items as called out in the service manual to support testing after this upgrade is 

performed as defined in this procedure. 

Remove the following from the existing unit with serial number less than 106000: 

1. Top cover. 

2. Front Panel. 

3. DCS. 

4. Inlet tubing, Blower Muffler and Blower* (may need to partially remove the Oxygen assembly to 

access the back blower mounting screw). 

5. All connections to the PAS. 

6. PAS. 

7. MCS. 

8. The two cable clamps from the left side of the unit that hold the blower, power supply, and main 

power indicator wiring. 

* It is possible to just remove the front two blower mounting screws and then when required, 

partially lift upwards on the front of the blower assembly to perform this upgrade. 

The following will no longer be needed: 

1. Power cable (gray) that originally connected to the PSS, PAS, and DCS. 

2. ICB cable. 

3. AFM to PC ribbon cable. 

4. 4 of the 5 screws that held the MCS in place. 

5. PAS (including software). 

6. MCS (including software). 

7. DCS software. 

8. Two top cover screws. 


From the repair kit 1004713 or 1000356 (PAV): 



1. Locate the EPROMs (version 12) and place them into their respective locations on the MC and 

PC boards. 

2. For non-PAV/T units, remove the original Alarm PAL located in U41 in the MCS and place it in 

the new MC board. For PAV/T units, install the PAL provided with upgrade kit 1000356 into U41 

in the MC board. 

3. Remove the DCS from the front panel. Install the DCS EPROM into its respective location. 

4. Locate the independent connector supplied with the kit. Insert it into the DCS next to the original 

ICB connector that is in the center of the board. It should be placed so that the keying (single open 

slot in the plastic body of the connector) is facing downwards. Solder in place. This will allow for 

the new ICB cable to be located so that the ribbon cable is downwards towards the bottom of the 

unit. 

5. Re-install the original DCS back onto the front enclosure. 

6. Install the 6-32 nut and one of the aluminum spacers onto the MC board with the spacer located 

on the component side of the board and the nut on the other side. The mounting hole is located by 

the power cable connection near the center of the board. 

7. Install the MC board into the bottom enclosure. Use the existing nylon “snap” standoffs to be 

placed where the original ones were removed, except put the new 8-32 x 3/8 screw in the 

mounting hole with the ground plane around it, which is located along the transformer edge of the 

MC board. 

8. Also for the MC, install new nylon “snap” standoffs in the front left and back left MC mounting 

holes. Put one of the three nylon standoffs between these two. Put one of the other two nylon 

standoffs in the rear behind the power supply connector and the third one opposite of this in the 

front of the MC board. 

9. Place the original DC ground wire and screw is to put into the mounting hole with the ground plane 

around it on the front left side of the MC board. 

10. Temporarily install the Ribbon cable, 1004699. This is not part of the kit, but should be kept on 

hand as part of the service tools needed to repair upgraded BiPAP Vision units s/n

10-8 


Installation/Upgrade (continued) 

11. Install the PC board onto the MC board standoffs making sure that the power connection near the 

center of the board, and the other similar connector (testing and error data) located in the front 

right of the board are fully seated. Also make sure that all of the nylon “snap” locks are fully 

engaged. 

12. Mount the second aluminum standoff onto the location near the center of the PC board where the 

first aluminum standoff from the MC board can be seen. 

13. Connect the blower, valves, circulation fan current sense, Oxygen Module ribbon cable, and the 

new ICB cable to the appropriate PC connection points. 

14. Locate the new AFM to PC ribbon cable and install it in place. Put this on the PC connection J4 

to the AFM. The other is connected to J6 for the OM ribbon connection. 

15. Connect the new power supply cable to the PSS connection. Note that the new cable has 6 

inches between the one end connector and the one in the middle. Connect this middle connector 

to the power connection on the PC board. Make a counterclockwise loop in the remaining part of 

the cable that will connect to the DCS board. Using the 6-32 x ¼ inch screw and cable clamp 

from the kit, attach the power supply cable to the center aluminum standoff in the center of the PC 

board. This will allow the cable to be secured, but also allow some movement of the cable during 

front panel removal. 

16. Remove the 7 inch piece of pressure tubing that connects from the “T” fitting on the AFM that 

originally connected to the pressure sensor on the PAS board. 

17. Locate the 3 inch piece of pressure tubing in the kit and place one end on the AFM “T” connection 

and the other end to the redundant pressure sensor. This is the sensor located nearest to the 

AFM module. 

18. Re-install the blower, blower muffler and inlet tubing (if all or any of these were removed). Connect 

the blower connector to the PC board. 

19. Re-install the front enclosure, making sure that all the proper connections are secured in place. 

The patient pressure tubing will go from the front enclosure to the middle pressure sensor, port on 

the right side. 

20. Make sure all required connections are correctly made. Just a reminder to double check your 

work. 

1045049 




21. When the upgraded unit is first turned on, a Check Vent Error 301 may occur. This will clear after 

the Blower/Valve Calibration is performed on the unit and the unit is cycled off and then on again. 

22. Using the Total Operating Hours Transfer found in chapter 8 of the BiPAP Vision service manual, 

put the original operating hours into the unit. 

23. Perform Blower/Valve Calibration found in chapter 8 of the BiPAP Vision service manual. 

Note: The PRV muffler DOES NOT get removed once this upgrade is installed 

into a unit. 

24. Perform the Run-In Test and then the System Final Test found in chapter 8 of the BiPAP Vision 

service manual. 

25. When complete, remove the Ribbon (1004699) cable that was temporarily installed into the MC 

board. 

26. Install the top enclosure using the two 6-32 x ½ screws supplied with the kit. 

Installation/Upgrade (continued) 

1045049 

10-9


Appendix A: Tools and Equipment 


A.1 Service Tools and Supplies ...................................................... A-2 

A.2 Acceptable Test Equipment .................................................... A-3 

A.3 TSI Inc. Certifier Test System .................................................. A-6 

1045049 

A-1

A-2 


A.1 Service Tools and Supplies 

You should have the following hand tools and supplies available for troubleshooting, testing, and repair of 

the BiPAP Vision. 

1045049 

• Common hand tools: 

Flat-blade screwdrivers – small (long shaft) and medium 

Phillips screwdriver – medium 

Nut drivers – 1/4”, 5/16”, 11/32”, and 7/16” 

1/4” wrench 

Needle-nose pliers, medium 

Antistatic work station – minimum requirement is a grounded mat and wrist strap 

Digital manometer - see section A.2, A.3 

Flowmeter - see section A.2, A.3 

Digital Multimeter – see section A.2 

PC/Laptop – see section A.2 

• O 2 Analyzer - see section A.2, A.3 

• Oxygen tank, medical grade oxygen and regulator 

Mechanical test lung – see section A.2 

Test Cable – Respironics P/N 582161 or 1004823 (see test cable description, Chapter 8) 

Pressure tubing – 6 in., 6 ft., other misc. lengths as required 

Tubing, 6 ft. smooth inner lumen – Respironics P/N 301016, other misc. lengths as required. 

• Variable flow restrictor - Respironics P/N 1006120 

• Pressure Pick-Off Port – Respironics P/N 312710 

• Test orifice – 0.25” – Respironics P/N 332353 

Isopropyl alcohol 

Cleaner (i.e. Fantastik ® , 409 ® .) 

Cleaning cloth 

Bacteria filter 

Mild Detergent 


A.2 Acceptable Test Equipment 

A.2.1Digital Manometer 

Specifications: 

Acceptable Options: 

0-40 cm H 2 O minimum 

± 1.0% cm H 2 O of reading 



Certifier Flow Analyzer, RI p/n 1012598 (High flow module) (see A.3 for details) 

• Any commercially available digital manometer that meets the above specifications 

A.2.2 Flowmeter 


0-150 L/minimum 

± 1% of reading 



Any commercially available flowmeter that meets the above specifications 

A.2.3Digital Multimeter 


3 1/2 digit readout 


Fluke 87 or better model. 

Any commercially available digital multimeter that meets the above specifications 

1045049 

A-3

A-4 


A.2.4 PC/Laptop 


1045049 

Any commercially available PC or laptop with Windows operating system and hyperterminal. 

A.2.5Mechanical Lung (Adult) 


Variable Compliance includes 0.05 

Parabolic Resistor value RP-20 

Lung capacity of at least 100L 


Michigan Instruments, Inc. Model 1601 Test Lung 

Any commercially available test lung that meets the above specifications 

A.2.6 Electrical Safety Analyzer 


Earth Resistance 

Leakage Current 

Range – 0 to 19.99 Ohms 

Resolution – 0.01 Ohms 

Accuracy – ±5%, ±1 digit 

Range – 0 to 19.99 µA 

Resolution – 1µA 

Accuracy – 2.5 to 1k HZ: ±1%, ± 1 digit 


Dale model 544L 

1k HZ to 100 k HZ: ± 1 digit 

100 k HZ to 1M HZ: ± 1 digit 

Any commercially available safety analyzer that meets the above specifications. 


Acceptable Test Equipment (Continued) 

A.2.7 Oxygen Analyzer 



Range: 0.0% to 100.0% O 2 

Display Resolution: 0.1% O 2 increments 

Accuracy: ± 2% of full scale 




MSA Mini OX1 (or better) 

Servomex 570A Oxygen Analyzer 

Any commercially available Oxygen Analyzer that meets the above specifications 

1045049 

A-5

A-6 


A.3. TSI, Inc. Certifier Test System 

The Certifier FA Test System manufactured by TSI Inc. and will be distributed worldwide by Respironics Inc. This 

test system, currently being used by the Respironics mobile technicians, is ideal for biomedical testing 

applications, including ventilators. The system as configured can measure air, O 2 and nitrous gases. The following 

are the measurement capabilities of this device: 

1045049 

♦ Flow 

♦ Peak Flow 

♦ Volume 

♦ Stacked Volume 

♦ Minute Volume 

♦ Inspiratory Time 

♦ I:E Ratio 

♦ Respiratory Rate 

♦ Pressure 

♦ Peak and PEEP Pressure 

♦ Barometric Pressure 

This small battery powered unit is ideal for use in the field, in any medical facility or laboratory. It comes equipped 

with all the filters and connectors to install in-line for testing purposes. There are two versions being offered. The 

first version is the portable unit with a high flow and O2 module. This is the version used currently by the 

Respironics Mobile Technicians for test of the Esprit, Vision and the PLV. The second version includes the high 

flow and O2 module but adds a low flow module and is designed to handle low flow and volume measurements 

when a high degree of accuracy is required. The following is the ordering information for both versions: 

P/N 1012598 - Kit, Certifier, High Flow Module 

P/N 1012599 - Kit, Certifier, High and Low Flow 

These kits can be ordered through Respironics Customer Service. 


Appendix B: Schematics 

B.1 Schematic Statement ................................................................. B-2 

B.2 Main Control (MC) .................................................................... B-3 

B.3 Display Control (DC) ............................................................... B-9 

B.4 Pressure Control (PC)............................................................. B-20 

B.5 Air Flow Module (AFM) ........................................................ B-25 

B.6 Oxygen Module (OM) ............................................................ B-26 

B.7 Power Supply ........................................................................... B-27 


1045049 

B-1

B-2 


B.1 Schematic Statement 

Schematics are supplied with this manual in direct support of the sale and purchase of this product. 

The schematics are proprietary and confidential. Do not copy the schematics or disclose them to third 

parties beyond the purpose for which they are intended. Patents are pending. 

The schematics are intended to satisfy administrative requirements only. They are not intended to be used 

for component level testing and repair. Repairs and testing are supported only at the complete board level. 

Respironics does not recommend component repair of the BiPAP Vision. The circuit boards in the BiPAP 

Vision are multilayer boards. Due to the very small trace size, extreme care must be used when replacing 

components to prevent permanent nonrepairable damage to the circuit board. Components are surface 

mounted and require special hot air jet soldering and desoldering equipment. Most of the work should be 

done under a microscope set at 25 times magnification. Use of regular soldering equipment will damage 

the board and void any applicable warranty. 

The schematics are of the revision level in effect at the time that this manual was last revised. Prior 

revisions may be obtained upon request. 

1045049 


B.1 Schematic Statement

1 

2 

3 

4 

5 

6 

7 

8 

DATE DRAWN BY: 

CHECKED BY: APPROVED BY: 

22.1K 

R57 

22.1K 

R55 

22.1K 

R54 

22.1K 

R53 

22.1K 

R52 

22.1K 

R51 

22.1K 

R50 

22.1K 

R49 

22.1K 

R48 

22.1K 

R56 

22.1K 

R58 

47.5K 

R28 


B.2 Main Control (MC) 

U24 

IN8 

A3 

PP35 

ICBDAT0 

CS5 

J4:A 1 

ICBDAT1 

R/W 

J4:B 2 

DS 

ICBDAT2 

J4:C 3 

ICBDAT3 

J4:D 4 

SNDINT 

ICBDAT4 

J4:E 5 

RCVINT 

ICBDAT5 

ADSINT 

J4:F 6 

ICBDAT6 

J4:G 7 

ATV2500S 

ICBDAT7 

(11,12=+5V, 4,26,33,34=DGND) 

J4:H 8 

ADS 

J4:I 9 

ATN 

J4:J10 

ACK 

J4:K11 

ELCSIGNAL 

J4:L12 ELCSIGNAL 

CS2 

CS4 

J4:X24 

RXD_PAS 

J4:W23 

TXD_PAS 

13J4:M 

J4:V22 

14J4:N 

J4:U21 

15J4:O 

J4:T20 

16J4:P 

J4:S19 

17J4:Q 

J4:R18 

DGND 

VISION 

PCA VISION MAIN CONTROL BD 

SCHEMATIC 

CPU 

J. MALIVUK 3-16-99 

EDMS 3-17-99 

S1001366 5 

EDMS 3-17-99 N/A 

1001366 1 6 

2 

IN3 22 

NC 44 

NC 43 

NC 42 

NC 40 

NC 32 

I/O0 5 

I/O1 6 

I/O2 7 

I/O3 8 

I/O4 9 

15 

I/O15 

16 

I/O14 

17 

I/O13 

18 

I/O12 

30 

I/O21 

29 

I/O20 

28 

I/O19 

19 

IN0 

1 

IN9 

37 

I/O9 

I/O7 

39 I/O8 

27 

I/O18 

25 

IN6 

41 

IN13 

23 

IN4 

20 

IN1 

21 

IN2 

24 

IN5 

3 

IN7 

35 

I/O11 

38 

I/O22 31 

I/O17 13 

I/O16 14 

I/O5 10 

I/O10 36 

2 EDMS Change RI p.n. for C52 

3-10-00 J. MALIVUK EDMS EDMS 

3 EDMS No change this sheet 

6-15-00 J. MALIVUK EDMS EDMS 

4 EDMS Change C47, C49, C59 to 100pf 6-28-00 J. MALIVUK EDMS EDMS 

5 EDMS No change this sheet 

11-16-00P.DEVINNEYEDMS EDMS 

ADDRESS_BUS 

DATA_BUS 

EPROM 

+5V 

* INSTALLED AT NEXT 

+5V ASSEMBLY LEVEL 

U46 

PP1 

PP2 

A17 

CSBOOT 

A16 

D15 

A15 DGND 

D14 

A14 

D13 

A13 

A12 

D12 

A12 

D11 

A11 

D10 

A10 

D9 

A9 

D8 

A8 

D7 

A7 

D6 

A6 

D5 

A5 

D4 

A4 

D3 

A3 

D2 

A2 

D1 

A1 

D0 

PP5 

PP4 

AM27C2048 

+5V 

D0 

D1 

R163 

D2 

22.1K 

D3 

ICB INTERFACE 

R143 

+5V 

+5V 

D4 

D5 

22.1K 

D6 

PP3 

D7 

PP14 

A1 

4 

PP33 

A2 

U1:D 

6 

PP34 

U7:B 

RD 

9 8 

5 

+5V 

ELC 

MC74HC14A MM74HC32A 

(7=DGND,14=+5V) (7=DGND,14=+5V) 

1 

RESET 

3 

U7:A 

WR 

2 

MM74HC32A 

(7=DGND,14=+5V) 

NOTES: 

1. * - INDICATES ITEMS NOT INSTALLED. 

2. RESISTORS ARE 1/8 WATT, 1% UNLESS OTHERWISE SPECIFIED. 

3. ANY CHANGE TO THE SCHEMATIC COULD AFFECT THE PERFORMANCE 

OF THE TEST SOFTWARE. TEST FUNCTIONALITY SHOULD BE VERIFIED. 

PLEASE REFER TO MCS TEST EPROM TF-58-028. 

SPARE 

9 

8 

U7:C PP29 

10 

MM74HC32A 

(7=DGND,14=+5V) 

DGND 

38 

A11 37 

A10 36 

A9 35 

A8 32 

A7 31 

A6 30 

A5 29 

A4 28 

A3 27 

A2 26 

A1 25 

A0 24 

VSS 34 

NC 23 

12 

VSS 

NC 

19 

DQ2 

20 

DQ1 

21 

DQ0 

13 

DQ3 

18 DQ4 

17 DQ5 

16 DQ6 

15 DQ7 

14 DQ8 

11 DQ9 

10 DQ10 

9 DQ11 

8 DQ12 

PGM 

7 

43 

NC 33 

VCC 44 

2 

VPP 

1 

NC 

A16 42 

A15 41 

A14 40 

A13 39 

6 

DQ13 

DQ14 

5 DQ15 

4 OE 

22 CE 

DEBUG INTERFACE 

* 

J7:A 

DS 

1 

J7:B 

BERR 

2 

J7:C 3 

J7:D MICROCONTROLLER 

BKPT 

4 

J7:E 5 

+5V 

J7:F 

FREEZE 

6 

DGND 

A0 

U25 

J7:G 

RESET 

7 

A1 

J7:H 3 

DSI 

8 

A2 

A3 

J7:I 9 

A4 

A5 

VDDI DGND 

J7:J10 

DS0 

A6 

A7 

DGND 

A8 

D0 

A9 

D1 

A10 

D2 

A11 

D3 

+5V 

A12 

D4 

A13 

D5 

A14 

D6 

A15 

D7 

A16 

D8 

A17 

D9 

ELC 

D10 

PP8 

D11 

ELC 

D12 

PFAILINT 

D13 

ADSINT 

D14 

RCVINT 

D15 

DGND 

SNDINT 

DGND 

CSBOOT 

RESET 

PP24 

RESET 

R6 

PP30 

CS2 

+5V 

100 

+5V 

C57 

PP11 

10uF 

PP25 

16V 

PP26 

DGND 

ELCACT 

PP10 

+5V 

AS 

HDW_REV R164 

PP9 

+5V 

PP51 

47.5K 

CS4 

R11 

DGND 

CS5 

10.0K 

R22 

R/W 

NURSECALL 

10.0K 

R23 

DOGRESET 

R24 

PP52 

10.0K DS 

MOSI 

10 

AS 

R125 

SCK 

PP7 

10 R133 

PP6DGND 

PCS0 

10 

PP53 

PP54 

BERR 

TXD 

+5V 

RXD 

PSV12P 

PSV12N 

PSV24 

PSVREF 

RD 

RD 

PP31 

WR 

WR 

PP16 

PP13 

AOMDET 

FREEZE 

+5V 

BKPT 

DS0 

DSI 

R200 

20.0 

PP50 

R2 

10.0M 

MC68HC16Z1 

C9 

DGND 

.01uF 

NVREADY 

Y1 

+5V 

C4 R174 

R146 

.1uF 18.2K 

32.768KHZ 

100 

+5V 

HSMS-C650 

CR10 

(7=DGND,14=+5V) (22,29,41,58,62,83,97,105,112,125=DGND, 21,40,59,61,84,98,113,124=+5V) 

R13 

MC74HC14A 

POWER AND GROUND PINS FOR U25 - NOT SHOWN ON SCHEMATIC 

1.00K 

10 11 

U1:E 

ERROR 

DGND DGND DGND 

LED 

1 

VSSI 2 

DATA10 96 

DATA9 99 

DATA8 100 

DATA7 101 

DATA6 102 

DATA5 103 

DATA4 104 

DATA3 106 

DATA2 107 

DATA1 108 

VDDE 8 

78 

IRQ1/PF1 

IRQ2/PF2 

77 IRQ3/PF3 

76 

ADDR19/C 119 

DATA15 91 

75 

IRQ4/PF4 

DATA14 

69 

RESET 

70 

HALT 

71 

BERR 

92 

51 

VRL 

VRH 

50 

ADDR20/C 120 

ADDR21/C 121 

BGACK/CS 118 

BG/CS1 117 

BR/CS0 116 

CSBOOT 110 

74 

IRQ5/PF5 

IRQ6/PF6 

73 IRQ7/PF7 

72 

DATA11 95 

DATA12 94 

DATA13 93 

39 

ADDR18 

ADDR17 

38 ADDR16 

37 ADDR15 

36 ADDR14 

35 ADDR13 

34 ADDR12 

33 ADDR11 

32 ADDR10 

31 ADDR9 

30 ADDR8 

28 ADDR7 

27 ADDR6 

26 ADDR5 

25 ADDR4 

24 ADDR3 

23 ADDR2 

20 ADDR1 

19 ADDR0 

90 

DATA0 109 

VSSE 9 

17 

RXD 

44 

ANO/PADA 

45 

AN1/PADA 

46 

AN2/PADA 

47 

AN3/PADA 

48 

AN4/PADA 

49 

AN5/PADA 

52 

AN6/PADA 

53 

AN7/PADA 

42 

VDDA 

43 

VSSA 

BKPT/DSC 

54 

VSTBY 

56 

VDDSYN 

129 

PAI 

126 

PCLK 

128 

PWMA 

127 

PWMB 

66 

TSTME/TS 65 

MODCLK/P 79 

IPIPE0/D 67 

IPIPE1/D 68 

XTAL 55 

EXTAL 57 

XFC 60 

CLKOUT 63 

FREEZE/Q 64 

7 

IC1/PGP0 

ADDR22/C 

6 

IC2/PGP1 

122 

ADDR23/C 123 

130 

IC4/OC5/ 

OC4/OC1/ 

131 OC3/OC1/ 

132 

18 

TXD/PQS7 

PCS3/PQS 

16 PCS2/PQS 

15 PCS1/PQS 

14 PCS0/SS/ 

13 SCK/PQS2 

12 MOSI/PQS 

11 MISO/PQS 

5 

IC3/PGP2 

FC0/CS3/ 

4 

OC1/PGP3 

3 

OC2/OC1/ 

10 

111 

DSACK0/P 89 

DSACK1/P 88 

AVEC/PE2 87 

DS/PE4 86 

AS/PE5 85 

SIZ0/PE6 82 

SIZ1/PE7 81 

R/W 80 

FC2/CS5/ 115 

FC1/CS4/ 114 

D 

D 

C C 

B 

B 

+5V PP49 

DGND 

DGND 

A 

A 

PRODUCT LINE: 

CONFIDENTIAL AND 

PROPRIETARY 

RESPIRONICS INC. 

PROCESS: 

TITLE: 

INFORMATION 

DRN BY: 

SIZE DRAWING NO. 

REV. 

CHK BY: 

D 

APPR BY: 

SCALE 

PART NO. 

SHEET 

OF 

8 7 6 5 

4 3 

2 

1 

DESCRIPTION 

C/N 

REV 

.1uF 

C11 

+5V 

10.0K 

R119 

10.0K 

R118 

10.0K 

R117 

10.0K 

R116 

10.0K 

R114 

10.0K 

R113 

10.0K 

R111 

10.0K 

R110 

+ 

.1uF 

1000pF 

C52 

C22 

* 

R29 

47.5K 

R27 

4.75K 

R26 

10.0K 

R3 

10.0K 

R25 

C47 

10.0K 

R44 

R21 

10.0K 

R120 

10.0K 

R121 

10.0K 

R122 

* 

R12 

10.0K 

C49 

100pF 

C59 

100pF 

100pF 

C89 

C87 

.01uF 

.1uF 

332K 

R5 

10.0K 

R176 

10pF 

C5 

C88 

22pF 

C90 

22pF 

1045049 

B-3 

Main Control Microcontroller Interface

B-4 


1 

2 

3 

4 

5 

6 

7 

8 

1045049 

J3:C 

CONN M 20 PIN RA RIBBON 3 

J3:F 


J3:E 


J3:D 


J3:A 

1 

J3:B 

CONN M 20 PIN RA RIBBON 

* 

L6 

0.22uH 

* 

* 

* 

L7 

0.22uH 

* 

L8 

0.22uH 

* 

* 

* 

L9 

0.22uH 

2 

AOM CIRCUIT 

+1VREF 

* 

* 

R34 

L4 

TP2 

5 

* 

* 24.9K 

7 

R137 

R19 

U4:B 

6 

* 

1.00K 

0.22uH 

24.9K 

LMC6484 

(4=+5VISO, 11=-5VISO) 

* 

R8 

TP6 * 

* 

* 

100K 

* 

L5 

R138 

100 

0.22uH 

I 

ISOGND 

+1VREF 

* 

R20 

TP3 

3 

* 

* 24.9K 

1 

R140 

U13 

R36 

U4:A 

2 

* 

1.00K 

24.9K 

LMC6484 

(4=+5VISO, 11=-5VISO) 

* 

R35 

100K 

* 

R139 

LDAC 

100 

I 

ISOGND 

MAX537BCWE 

+1VREF 

* 

* 

20V 

R38 

TP4 

10 

* 

4.7uF 

* 24.9K 

8 

R142 

C34 

R40 

U4:C 

9 

* 

+ 

1.00K 

* 

24.9K 

LMC6484 

(4=+5VISO, 11=-5VISO) 

* 

R39 

100K 

* 

R141 

100 

7 

OUTD 15 

DGND 6 

OUTC 16 

OUTB 1 

OUTA 2 

RFAB 5 

VDD 14 

3 

VSS 

AGND 

4 SDI 

8 SDO 

11 SCK 

10 CS 

9 RFCD 

12 TP 

* +5V 

+5VISO * 

C40 

C37 

.1uF 

.1uF 

* 

I 

DGND 

U16 

* ISOGND 

1 

6 R107 

10.0K 

D 

PCS0 

2 

5 

D 

3 

4 

74OL6000 

I 

DGND 

ISOGND 

+5VISO 

* 

DAC 

* +5V 

+5VISO * 

C35 * 

C41 

C38 

.1uF 

I 

.1uF 

.1uF 

I 

ISOGND 

+5VISO 

DGND 

* 

ISOGND 

U17 

* 

+2.5VISO 

* 

+2.5VISO 

R108 

13 

1 

6 

10.0K 

SCK 

2 

5 

PP21 

3 

4 

74OL6000 

I 

I 

DGND 

ISOGND 

I 

ISOGND 

ISOGND 

C C 

+5V 

+5VISO 

* 

* 

-5VISO 

C42 

C39 

.1uF 

.1uF 

I 

DGND 

* 

ISOGND 

I 

U14 

* 

ISOGND 

1 

6 R105 

10.0K 

MOSI 

2 

5 

1000pf 2 1 

FL9 

.1uF 

C24 

+ 

C31 

4.7uF 

20V 

FL11 

1000pf 2 

.1uF 

C25 

1 

.1uF 

C32 

FL13 

1000pf 2 

.1uF 

C26 

1 

I 

ISOGND 

4 

3 


7 

J3:G 


* 

L10 

0.22uH 

* 

R145 

1.00K 

* 

R41 

24.9K 

+1VREF 

I 

ISOGND 

74OL6000 

* 

R43 

24.9K 

FL15 

1000pf 2 

* 

.1uF 

C27 

8 

J3:H 


* 

* 

R144 

100 

12 

14 

U4:D 

13 

* 

LMC6484 

(4=+5VISO, 11=-5VISO) 

* 

R42 

100K 

DGND 

TP5 

1 

B 

* 

L11 

0.22uH 

B 

I 

ISOGND 

+5VISO 

U4 

.1uF 

C61 

-5VISO 

* 

U4 

.1uF 

C60 

* 

AOMDET 

I 

ISOGND 

ZERO 

R136 

* 

I 

ISOGND 

DGND 

+5VISO 


+1VREF 

+2.5VISO 

* 

R46 

47.5K 

* 

U12 

LM4040BIM-2.5 

1.00K 

R47 

* 

.1uF 

C30 

* * 

31.6K 

R45 

.1uF 

C29 

* 

A 

A 

PRODUCT LINE: 


I 

ISOGND 

I 

ISOGND 

I 

ISOGND 

VISION 


PROPRIETARY 

INFORMATION 

I 

ISOGND 


ANALOG OUTPUTS 

TITLE: 

PROCESS: 

SCHEMATIC 

REV. 

5 

S1001366 

OF 

2 6 

1001366 

1 



EDMS 

3-17-99 

D 

SCALE 

EDMS 3-17-99 N/A 

2 

DRN BY: 

CHK BY: 

SHEET 

PART NO. NO. 

APPR BY: 

4 3 

8 7 6 5 

Main Control I / O Interface 1

1 

2 

33 

44 

55 

66 

7 

8 

DATA_BUS 

+5V 

D0 R75 

47.5K 

ADDRESS_BUS 

D1 R76 

+5V 

47.5K 

+5V 

D2 R77 

A0 R30 

47.5K 

C8 

47.5K 

D3 R78 

A1 R31 

47.5K 

.1uF 

47.5K 

D4 R79 

DGND 

A2 R32 

47.5K 

47.5K 

D5 R80 

A3 R59 

47.5K 

D6 R81 

U3 

DGND 

47.5K 

A4 R60 

47.5K 

D7 R83 

D8 

47.5K 

A5 R61 

47.5K 

D9 

D8 R84 

D10 

47.5K 

A6 R62 

47.5K 

D11 

D9 R85 

D12 

47.5K 

A7 R63 

47.5K 

D13 REAL TIME CLOCK/NON-VOLATILE RAM 

D10 R86 

D14 

47.5K 

A8 R64 

47.5K 

D15 

D11 R87 

47.5K 

A9 R65 

47.5K 

D12 R88 

PP27 

47.5K 

47.5K 

NOTE: 

A10 R66 

D13 R89 

RST U3 REQUIRES A "SNAPHAT" 

47.5K 

WR 

A11 R67 

47.5K 

D14 R90 

RD 

BATTERY/CRYSTAL FOR 

47.5K 

CS4 

PROPER OPERATION. 

A12 R68 

47.5K 

D15 R91 

M48T59Y-70MH1 

47.5K 

A13 R69 

47.5K 47.5K 

DGND 

47.5K 

A14 R70 

47.5K 

A15 R71 

47.5K 

A16 R72 

47.5K 

A17 R73 

47.5K 

RESET 

PFAILINT 

11 

IRQ 26 

DQ7 19 

DQ6 18 18 

DQ5 17 

DQ4 16 

DQ3 15 

DQ2 13 

VCC 28 

DQ1 12 

DQ0 11 

VSS 14 

20 

E 

G 

22 W 

2 

A12 

27 

A11 A11 

23 A10 

21 A9 

24 A8 

25 A7 

33 A6 

4 A5 

55 A4 

6 A3 

7 A2 

8 A1 

9 A0 

A0 10 

A1 

A2 

A3 

A4 

A5 

A6 

A7 

A8 

A9 

A10 

A11 

A12 

NVREADY 

VBULK 

+5V 

R1 

CR1 

124K 

MMBD301LT1 

+5V 

U47 U47 

MAX696CWE 

MAX696CWE 

BATTON PP18 

PP19 

* 

TP8 

PP20 

PP22 

DGND 

55 

OSCSEL 8 

OSCIN 7 

RESET 

12 

NC 

4 

GND GNDLOWLINE 

LOWLINE 

6 

16 

RESET 15 

WDO 14 

PFO 10 

13 

LLIN 

WDI 

11 PFI 

D 

D 

C CC 

+5V 

** 

3 

VCC 

TP1 

2 

DGND 

VOUT 

11 

VBATT VBATT 

9 

DOGRESET 

** 

+5V TP7 

PP17 

R155 

B 

24.3K 

B 

DGND 

B120 

CR2 

C103 

.01uF 

R4 

9.31K 

R154 

825.0 


PP23 

C102 

.01uF 

R156 

10.0K 

WATCHDOG AND AND POR CIRCUIT 

DGND 

DGND 

CS2 

+5V +5V 

* 

DATA_BUS 

R166 

47.5K 

R167 

47.5K 


D7 

D6 

D5 

D4 

D3 

D2 

D1 

D0 

VISION 

U2 

YA4 

MC74HC244ADW 

(10=DGND,20=+5V) 

12 

YA3 14 

YA2 16 

YA1 18 

YB4 3 

YB3 5 

YB2 77 

YB1 9 

8 

A4 

A3 

66 A2 

4 A1 

22 B4 

17 B3 

15 B2 

13 B1 

11 ENABLEB ENABLEB 

19 ENABLEA 

11 

C17 C17 

.1uF .1uF 

DGND 

R168 

47.5K 

R170 

47.5K 

+5V 

U41 

I/O8 

PALCE22V10Q-15 

DGND 

26 

I/O0 17 

I/O1 18 

I/O2 19 19 

I/O3 20 

I/O4 21 21 

I/O5 23 23 

I/O6 24 

I/O7 25 

I/O9 27 

VCC 28 

GND 14 

16 

I11 

I10 

13 I9 

12 I8 

11 I7 

10 I6 

9 I5 

77 I4 

66 I3 I3 

55 I2 

44 I1 

33 CLK/I0 

INSTALLED AT NEXT 

ASSEMBLY LEVEL 

22 

ACFAIL_F 

OFF/ON 

AA 

A 


PRODUCT LINE: 


PROPRIETARY 

INFORMATION 


WATCHDOG / REAL TIME CLOCK 

REV. 

TITLE: 

PROCESS: 

DGND 

SCHEMATIC 

5 

S1001366 

DRAWING NO. 

SIZE 

OF 

3 6 

3-16-99 

3-17-99 

3-17-99 

1001366 

1 

N/A 

J. MALIVUK 

EDMS 

EDMS 

2 

DRN BY: 

CHK BY: 

APPR BY: 

DGND DGND 

SHEET 

D 

PART NO. 

SCALE 

44 3 

88 7 66 5 

1045049 

B-5 

Main Control I / O Interface 2

B-6 


1 

2 

3 

4 

5 

6 

7 

8 

ELC 

+5V 

1045049 

10.0K 

R7 

ELCSIGNAL 

J3:M 

CONN M 20 PIN RA RIBBON13 J3:K 

CONN M 20 PIN RA RIBBON11 J3:P 

CONN M 20 PIN RA RIBBON16 J3:Q 

CONN M 20 PIN RA RIBBON17 J3:O 

CONN M 20 PIN RA RIBBON15 J3:R 

CONN M 20 PIN RA RIBBON18 J3:S 

CONN M 20 PIN RA RIBBON19 J3:I 

CONN M 20 PIN RA RIBBON9 J3:T 

CONN M 20 PIN RA RIBBON20 U1:B 

U1:C 

R17 

3 4 5 6 

ELC 

221K 

MC74HC14A MC74HC14A 

(7=DGND,14=+5V) (7=DGND,14=+5V) 

DGND 

U1:A 

Q3 

1 2 

BSS123LT1 

ELC 

MC74HC14A 

(7=DGND,14=+5V) 

DGND 

DGND 

J3:L 


L15 

R96 

R97 10.0 

0.22uH 

10.0 

I 

L16 

ISOGND 

0.22uH 

L17 

0.22uH 

L18 

R109 

10.0 0.22uH 

L19 

R92 

10.0 0.22uH 

L20 

R95 

10.0 0.22uH 

I 

ISOGND 

12 

J3:J 

CONN M 20 PIN RA RIBBON10 J3:N 

CONN M 20 PIN RA RIBBON14 ELCACT 

+5VISO 

R16 

22.1K 

+5VISO 

U39 

U44:A 

1 

NC 

8 

1 

2 

R106 

TXD 

2 

7 

MC74HC14A 392 

6 

(7=DGND,14=+5V) 

3 

4 

NC 5 

DGND 

DGND 

+5VISO 

6N136-007 I 

ISOGND 

+5VISO 

U43 

U44:E 

1 

NC 

8 

L12 

11 

10 

R104 

TXD_PAS 

2 

7 

MC74HC14A 392 

6 

ASYNCHRONOUS SERIAL INTERFACE 

(7=DGND,14=+5V) 

0.22uH 

3 

+5VISO 

4 

DGND 

NC 5 

C12 U11 

C2 

+5VISO 

6N136-007 

L13 

I 

ISOGND 

2.2uF 

C15 2.2uF 

+5VISO 

U49 

0.22uH 

C13 

2.2uF C14 

U44:C 

1 

NC 

8 

2.2uF 

2.2uF 

J6:A 

R149 

2 

7 

I 

5 

6 

R112 

1 

ISOGND R9 

L14 

10.0 

MC74HC14A 392 

6 

(7=DGND,14=+5V) 

3 

R98 10.0 

R99 

0.22uH 

10.0 

4 

DGND 

NC 5 

10.0 

+5V 

6N136-007 I 

ISOGND 

R10 

10.0 

R103 

GND 

392 

MAX207ECWG 

R102 

392 

R115 

392 

8 

T5OUT 20 

21 

T5IN 

R1IN 4 

5 

R1OUT 

R2IN 23 

R3IN 16 

17 

R3OUT 

R2OUT 

T1OUT 

22 

2 

T2OUT 3 

T3OUT 1 

T4OUT 24 

19 

T4IN 

T3IN 

V- 

7 

T1IN 

6 

T2IN 

18 

15 

VCC 

13 

C2+ 

14 

C2- 

9 

V+ 11 

10 

C1+ 

12 

C1- 

U50 

NC 

6N136-007 

1 

2 

3 

NC 4 

U42 

NC 

6N136-007 

8 

7 

6 

5 

1 

2 

3 

NC 4 

8 

7 

6 

5 

U45 

NC 

6N136-007 

1 

2 

3 

NC 4 

D 

D 

C C 

+5V 

U44:F 

I 

ISOGND 

12 13 

RXD 

MC74HC14A 

(7=DGND,14=+5V) 

I 

ISOGND 

+5V 

DGND 

+5V 

8 

U44:D 

7 

B 

8 9 

6 

B 

RXD_PAS 

MC74HC14A 

(7=DGND,14=+5V) 

I 

5 

ISOGND 

+5V 

DGND 

+5V 

U44:B 

J6:B 

R148 

4 3 

2 

10.0 

MC74HC14A 

(7=DGND,14=+5V) 

I 

ISOGND 

DGND 

1000pf 2 1 

FL2 

.1uF 

C7 

.01uF 

C6 

3.32K 

R101 

3.32K 

R100 

3.32K 

R33 

3.32K 

R18 

3.32K 

R15 


3.32K 

R14 


R147 

10.0 

J6:C 

3 

DGND 

A 

A 


PRODUCT LINE: 

VISION 


ELC / SERIAL INTERFACE 

DRAWING NO. 

REV. 

TITLE: 

PROCESS: 


PROPRIETARY 

INFORMATION 

SCHEMATIC 

5 

S1001366 

SIZE 

D 

OF 

4 6 

1001366 

1 

N/A 

3-16-99 

3-17-99 

3-17-99 

J. MALIVUK 

EDMS 

EDMS 

2 

DRN BY: 

CHK BY: 

SHEET 

PART NO. 

SCALE 

APPR BY: 

4 3 

8 7 6 5 

Main Controller PCMCIA Interface

11 

22 

33 

4 

55 

66 

7 

88 

CR3 

P6SMB5.0AT3 

.1uF 

C152 

R93 

47.5K 

.01uF 

C1 

.1uF 

C23 

P6SMB15AT3 

CR6 

.1uF 

C105 

.1uF 

C21 

.1uF 

C43 

CR5 

P6SMB15AT3 

.1uF 

C128 

.22uF 

C66 

R37 

2.4K 

R169 

10.0K 

.1uF 

C44 

.1uF 

C46 



+5V 

L1 

1 

22 

7 

22uH 

J1:G 

2A 

C146 

+ 

+ 

C115 

120uF 

1000uF 

50V 

25V 

VOLTAGE CHECKS 

+12V 

DGND 


R123 3 

30.1K 

1 

R127 

PSV12P 

L3 

R134 U18:A 

2 

1.00K 

1 

2 

OPA4277UA 

5 

10.0K 

22uH 

J1:E 

(4=+12V, 11=-12V) 

2A 

DGND 

50V 

120uF 

-12V 

C104 

U15 

+ 

R129 

DGND 

LM2585T-5 

5 

2.49K 

VIN 

(4=+12V, 11=-12V) 

1 


COMP FB +12V 

R128 

L2 

OPA4277UA 

GND 

PS4 

10.0K 6 

R130 

1 

2 

U18:B 

PSV12N 

3 

4 

7 

1.00K 

15V 2A 

22uH 

J1:D 

-12V 

2A 

5 

+ C99 

+ C149 

DGND 

DGND 

1000uF 

120uF 

25V 

50V 

VBULK 

DGND 

DGND 


R126 10 

82.5K 

8 

R131 

PSV24 

R135 U18:C 

9 

1.00K 

10.0K 

OPA4277UA 

(4=+12V, 11=-12V) 

DGND 

+12V 

DGND 

R124 

R132 

PSVREF PSVREF 

4.75K 

1.00K 

+5VISO 

U19 

CR9 

LM4040BIM-2.5 

MBRS340T3 

DGND 

DGND 

SPARE 

12 

14 

U18:D 

PP32 

13 

OPA4277UA 

DGND (4=+12V, 11=-12V) 

NO ALARM ALARM 

JP1 JP2 

OUTPUT OUTPUT 

2,3 2,3 51.1K OPEN 

2,3 1,2 CLOSED OPEN 

1,2 1,2 OPEN CLOSED * ASSEMBLED CONFIGURATION 

R175 

1.00M 

CHASSIS GROUND IS AT THE PLATED 

J5:C 

3 

C10 

MOUNTING HOLE IN THE ISOLATED 

FL3 

.001uF 

SECTION. 

NFM61R30T472 

J 

J5:B 

I 

1 

3 

2 

ISOGND CHASGND 

2 

JP1 

CHASGND 

VISION 

FL4 

NFM61R30T472 

J5:A 

1 

3 

1 


SCHEMATIC 

2 

POWER SUPPLY / STATUS 

CHASGND 


EDMS 3-17-99 

S1001366 5 

EDMS 3-17-99 N/A 

1001366 5 6 

2 

SWITCH 4 

+5V 

PS2 

15V 2A 

T1 

55 

+ C86 

1000uF 

J1:C R82 

55 

25V 

AC FAIL FAIL33 

ACFAIL_F 

DGND 

499.0 

6 

CR29 

2 

MBRS340T3 

DGND 

88 

17 

11 

CR24 

CR45 

PS3 

CR4 4 

DGND 

B160 

15V 2A 

SMBJ24A MURS120T3 

9 

C101 

VBULK 

11 DGND 

1000uF 

10 

CR44 

+ 25V 

J1:A 

PS1 

11 

XFORMER FLYBACK 100KHz B160 

60V 750MA 

17:5,11,11 

DGND 

J1:B 

+ C20 

2 

120uF 

50V 

J1:H 

88 

DGND DGND 

J1:I 

9 

J1:J 

10 

+5V 

DGND 

DGND 

J1:F 

CR22 

66 

OFF/ON 

MMBD301LT1 

C28 

C33 

VBULK 

R150 

1000pF 

11.3K 

1000pF 

DGND 

DGND 

K1 

8 + 3 NURSE CALL RELAY/JUMPERS 

- 

10 NO 

C 5 

1 NC 

V23026 A1 001 B201 

Q2 

U5 U5 

BSS123LT1 

CC 

R94 

H11A817A H11A817A 

47.5K 

II 

ISOGND 

4 

1 

AA 

EE 3 

T2 

1 

5 

VBULK 

+ C56 

U6 

100uF 

16V 

2 

6 

R158 

Q4 

3 

IFRF220 IFRF220 

I 

249 

+ C58 

GND 1/4W 

ISOGND 

100uF 

UC3845 

16V 

7 

CR11 

DGND 

4 

MBRS340T3 

ICA-0416 

24V 

-5VISO 

DGND 

JUMPER POSITIONS FOR NURSE CALL OPTION 

OPTION 

R152 

DGND 

165 

11 

2 

+5VISO ** 33 

CR7 

B120 

+5VISO 

22 

KK 

55 

VCC 7 

VREF 88 

OUT 6 

D 

DD 

CC CC 

1 

COMP 

22 

VFB 

33 

SENSE 

4 

RT/CT 

DGND 

R157 

4.99K 

BB 

BB 

CR8 DGND 

+ MURS120T3 

C55 

100uF 

16V 

DGND DGND 

NURSECALL 

12 

U1:F 

11 13 12 R74 

U7:D 

ELC 

13 

MC74HC14A 

392 

AA 

A 

MM74HC32A (7=DGND,14=+5V) 

(7=DGND,14=+5V) 

PRODUCT LINE: 


DGND 


PROPRIETARY 

PROCESS: 

TITLE: 

INFORMATION 

INFORMATION 

DGND 

DRN BY: 


REV. 

CHK BY: 

DD 

APPR BY: 

SCALE 

PART NO. 

SHEET 

OF 

8 77 6 55 

4 3 

2 

1 

R159 

* 

R165 

182 

1/4W 

1000pF 

R151 

100K 

C3 

R162 

121 

1/4W 

R161 

499 

1/2 W 

1W 

2.0 

R160 

100pF 

C36 

R153 

165 

3 1 

2 

2 

3 J 1 

JP2 

47.5K 

R173 

47.5K 

R172 

R171 

51.1K 

1045049 

B-7 

Main Controller Error Line Control Circuit

B-8 


1 

2 

3 

4 

5 

6 

7 

8 

1045049 

D 

D 

+5V 

+5V 

+5V 

+5V 

U25 

U25 

U25 

U25 

U25 

PIN 61 

PIN 40 

PIN 21 

PIN 8 

PIN 1 

C114 

.1uF 

C112 

.1uF 

C110 

C108 

.1uF 

C48 

.1uF 

.1uF +5V 

DGND 

DGND 

DGND 

DGND 

DGND 

C C 

+5V 

+5V 

+5V 

+5V 

+5V 

+5V 

PIN 54 

PIN 59 

U25 

U25 

U25 

U25 

U25 

U25 

PIN 42 

PIN 124 

PIN 113 

PIN 98 

PIN 84 

C116 

.1uF 

C118 

.1uF 

C120 

.1uF 

C122 

.1uF 

C124 

.1uF 

C126 

.1uF 

DGND 

DGND 

DGND 

DGND 

DGND 

DGND 


B 

B 

+5V 

+12V 

+5V 


U25 

+ C63 

10uF 

10V 

U25 

+ C62 

10uF 

10V 

-12V 

U18 U18 

U24 

.1uF 

C54 

.1uF 

C53 

C19 

C45 

C50 

.22uF 

C16 

C18 

C51 

.1uFU47 

.1uFU44 

.1uFU7 

.1uFU2 

.1uFU1 

A 

DGND 

DGND 

DGND 

A 

DGND 


PRODUCT LINE: 

VISION 


BYPASS SHEET 

TITLE: 

PROCESS: 


PROPRIETARY 

INFORMATION 

SCHEMATIC 

REV. 

5 

S1001366 

DRAWING NO. 

SIZE 

D 

OF 

6 6 

1001366 

1 

N/A 

3-16-99 

3-17-99 

3-17-99 

J. MALIVUK 

EDMS 

EDMS 

2 

DRN BY: 

CHK BY: 

SHEET 

PART NO. 

SCALE 

APPR BY: 

4 3 

8 7 6 5 

Main Controller Decoupling Caps


B.3 Display Control (DC) 

1045049 

B-9 

Display Control Power Conversion Circuitry

B-10 


1045049 



Display Control Battery and Indicator Circuitry


B-11 


1045049 

Display Control Error Line Control Circuitry

B-12 


1045049 



Display Control Diagnostic Interface and Address Decoding


B-13 


1045049 

Display Control User Interface and Safe State Circuitry

B-14 


1045049 



Display Control Microcontroller Interface


B.4 Display Control (PC)S/N >106K 

1045049 

B-15 

PCA Display Control Board - Power Conversion Circuitry

B-16 


1045049 


B.4 Display Control (PC) S/N >106K 

PCA Display Control Board - Battery and Indicator Circuitry



1045049 

B-17 

PCA Display Control Board - Error Line Control

B-18 


1045049 



PCA Display Control Board - Diagnostic Interface & Address Decoding


B-19 


1045049 

PCA Display Control Board - Microcoltroller Interface

B-20 


1 

2 

3 

4 

5 

6 

7 

8 

1045049 

ADDRESS_BUS 

4 

6 

U7:B 

5 

MM74HC32A 

CONN M 12 PIN 100 10J10:J 

CONN M 10 PIN 100 

(7=DGND,14=+5V) 

J10:I 9 


J9:H 8 

* 


R34 

PCS1-P 

12J10:L 

PCS1 

+5V 

J10:K11 


10 


1 

J9:I 9 

3 

U7:A 

WR 

CONN M * 10 PIN 100 

2 

DSO 

J9:J J9:J10 

MM74HC32A 

* 

(7=DGND,14=+5V) 

DGNDDGNDDGNDDGND 

CLKOUT 

+5V 

+5V 

U29 

MAX696CWE 

BATTON PP19 

PP20 * 

TP8 

DGND 

RESET 

PP25 

PP17 

12 

NC 

PP18 

4 

GND LOWLINE 

RESET 

6 

DGND 

NOTES: 1. ALL RESISTORS 1/8 WATT, 1 % UNLESS OTHERWISE SPECIFIED. 

2. AN ASTERISK " " INDICATES COMPONENTS THAT ARE NOT INSTALLED. 

3. ALL TEST POINTS * ARE NOT INSTALLED. 

4. ANY CHANGE TO THE SCHEMATIC COULD AFFECT THE PERFORMANCE OF THE 

TEST SOFTWARE. TEST FUNCTIONALITY SHOULD BE VERIFIED. 

PLEASE REFER TO PAS TEST EPROM TF-58-030. 

5. WIDER LINES INDICATE JUMPERS THAT ARE ADDED TO ASSEMBLY, 

NOT ON ORIGINAL PCB. 

SPARES 

12 

PP23 

11 

U7:D PP24 

13 

VISION 

MM74HC32A 

(7=DGND,14=+5V) 

DGND 

PCA VISION PRESSURE CONTROL BD 

U8:E 

U8:F 

SCHEMATIC 

11 10 13 12 

CPU 

PP28 

PP29 


DGND 

(7=DGND,14=+5V) 

DGND 

(7=DGND,14=+5V) 

S1001365 6 

N/A 

1001365 1 5 

5 

OSCSEL 8 

OSCIN 7 

RESET 16 

RESET 15 

WDO 14 

PFO 10 

13 

LLIN 

WDI 

11 PFI 

9 VBATT 

1 VOUT 

2 VCC 

U3 

38 

A12 

37 

A11 

36 

A10 

35 

A9 

32 

A8 

31 

A7 

30 

A6 

29 

A5 

28 

A4 

27 

A3 

26 

A2 

25 

A1 

24 

A0 

DEBUG 

34 

VSS 


AM27C2048 

DS 

J9:A 1 

CONN M 10 * PIN 100 

BERR 

J9:B J9:B 2 


J9:C 3 


BKPT 

J9:D 4 


J9:E 5 

* 

DGND 


FREEZE 

J9:F 6 


RESET 

J9:G 7 

* 

DSI 

3 

NC 

23 

VSS 12 

NC 13 

DQ1 20 

DQ0 21 

DQ2 19 

DQ3 18 

DQ4 17 

DQ5 16 

DQ6 15 

DQ7 14 

DQ8 11 

DQ9 10 

DQ10 9 

DQ11 8 

DQ12 7 

43 

PGM 

NC 

33 VCC 

44 

VPP 2 

NC 1 

42 

A16 

41 

A15 

40 

A14 

39 

A13 DQ13 6 

DQ14 5 

DQ15 4 

OE 22 

CE 3 

EPROM 

STATIC RAM UPPER BYTE 

* 

+5V INSTALLED AT NEXT NEXT+5V 

+5V 

+5V 

ASSEMBLY LEVEL 

U20 

RD 

CS0 

PP6 

PP11 

WR 

DGND 

A1 

A17 

CSBOOT 

A2 

DGND A16 

D15 

D0 

A3 

D8 

A15 

D14 

D1 

A4 

D9 

A14 

D13 

D2 

A5 

D10 

A13 

D12 

D3 

A6 

D11 

A12 

D11 

D4 

A7 

D12 

A11 

D10 

D5 

A8 

D13 

A10 

D9 

D6 

A9 

D14 

A9 

D8 

D7 

A10 

I/O8 D15 

A8 

D7 

A11 

A7 

D6 

A12 

A6 

D5 

A13 

A5 

D4 

A14 

A4 

D3 

A15 

A3 

D2 

KM62256 

A2 

D1 

DGND 

A1 

D0 

PP21 

PP22 

DGND 

DGND 

BUS ACCESS JUMPER 

CONN M 12 PIN 100 6 J10:F R14 

SCK-P 

SCK 

J10:E5 


10 

CONN M 12 PIN 100 4 J10:D R24 

MOSI-P 

MOSI 

J10:C J10:C3 


10 

CONN M 12 PIN 100 2 J10:B 

MISO-P 

MISO 

J10:A1 


CONN M 12 PIN 100 8 J10:H R33 

PCS0-P 

PCS0 

J10:G7 


10 

CS9-P 

CS9 

19 

I/O7 18 

I/O6 17 

I/O5 16 

I/O4 15 

I/O3 13 

I/O2 12 

I/O1 11 

VCC 28 

VSS 14 

27 

WE 

CS 

20 OE 

22 

24 

A9 

21 

A10 

23 

A11 

2 

A12 

1 

A14 

A8 

25 A7 

3 A6 

4 A5 

5 A4 

6 A3 

7 A2 

8 A1 

9 A0 

U27 

10 

A8 

A9 

A10 

I/O8 

A11 

A12 

A13 

A14 

26 

A13 

A15 

KM62256 

DGND 

+5V 

+5V 

AS 

R1 R66 

47.5K 47.5K 

RD 

R/W 

+5V 

19 

I/O7 18 

I/O6 17 

I/O5 16 

I/O4 15 

I/O3 13 

I/O2 12 

I/O1 11 

VCC 28 

VSS 14 

27 

WE 

CS 

20 OE 

22 

24 

A9 

21 

A10 

23 

A11 

2 

A12 

1 

A14 

A8 

25 A7 

3 A6 

4 A5 

5 A4 

6 A3 

7 A2 

8 A1 

9 A0 

ERRORLED 

DATA_BUS 

+5V 

U8:B 

CR22 

3 4 

R13 

MICROCONTROLLER 

STATIC RAM LOWER BYTE 

MC74HC14A DIODELED SMT 

1.00K 

+5V 

(7=DGND,14=+5V) 

U1 

PP3 

RD 

A1 

CS1 

+5V 

A2 

WR 

A3 

A1 

10 

A4 

VDDI A2 

A5 

A3 

A6 

A4 

A7 

DGND 

A5 

A8 

D0 

A6 

A9 

D1 

A7 

A10 

D2 

A11 

D3 

A12 

D4 

A13 

D5 

A14 

D6 

A15 

D7 

A16 

D8 

26 

A13 

A17 

D9 

PP2 

D10 

ELC 

D11 

ILFR_OPEN 

D12 

ADSINT 

D13 

RCVINT 

D14 

SNDINT 

D15 

PRV_OPEN 

CSBOOT 

CS0 

R69 

RESET 

CS1 

+12V 

U19 

C56 + 

10.0K 

PP38 

LM4040BIM-5.0 

10uF 

BERR 

PP9 

10V 

PP37 

AGND 

PP14 

ELCACT 

CS9-P 

PP10 

PP8 

PP7 

U8:A 

CS5 

1 2 

MC74HC14A 

MOTORFAULT 

(7=DGND,14=+5V) 

DOGRESET 

+5V MISO-P 

DS 

MOSI-P 

AS 

HDW_REV 

SCK-P 

PP5 DGND 

PCS0-P 

PP4 

PCS1-P 

PCS2-P 

DGND 

+5V 

PCS3-P 

TXD 

+5V 

RXD 

AFM-DETECT 

OM-DETECT 

V_ILFR 

V_PRV 

R3 R154 R67 

V_O2 

10.0K 10.0K 4.99K 

WATCHDOG AND LOW VOLTAGE RESET 

O2TEMP 

AIRTEMP 

POUT_BU 

FREEZE 

C12 

+5V 

R41 

100 

+5V 

.1uF 

+ 

BKPT 

DGND 

C57 

DSO 

10uF 

DSI 

RESET RESET 10V 

R9 

* 

20 

TP9 

AGND 

R2 

DGND 

PP15 

BSPEED 

MC68HC16Z1 

MC68HC16Z1 

10.0M 

BENABLE 

+5V 

C52 

.01uF 

Y1 DGND 

32.768 KHZ 

DGND DGND 

C1 

C14 

C10 

DOGRESET 

R35 

.1uF 

22pF 

22pF 

PCS2-P 

10 

(22,29,41,58,62,83,97,105,112,125=DGND, 21,40,59,61,84,98,113,124=+5V) 

R36 

PCS3 

PCS3-P 

DGND DGND 

10 

9 

8 

U7:C 

10 

DGND DGND 

MM74HC32A 

(7=DGND,14=+5V) 

DGND 

U8:C 

U8:D 

5 6 

PP26 

9 8 

PP27 


DGND 

(7=DGND,14=+5V) 

DGND 

(7=DGND,14=+5V) 

1 

VSSI 2 

DATA10 96 

DATA9 99 

DATA8 100 

DATA7 101 

DATA6 102 

DATA5 103 

DATA4 104 

DATA3 106 

DATA2 107 

DATA1 108 

VDDE 8 

78 

IRQ1/PF1 

IRQ2/PF2 

77 IRQ3/PF3 

76 

ADDR19/C 119 

DATA15 91 

75 

IRQ4/PF4 

DATA14 

69 

RESET 

70 

HALT 

71 

BERR 

92 

51 

VRL 

VRH 

50 

ADDR20/C 120 

ADDR21/C 121 

BGACK/CS 118 

BG/CS1 117 

BR/CS0 116 

CSBOOT 110 

74 

IRQ5/PF5 

IRQ6/PF6 

73 IRQ7/PF7 

72 

DATA11 95 

DATA12 94 

DATA13 93 

39 

ADDR18 

ADDR17 

38 ADDR16 

37 ADDR15 

36 ADDR14 

35 ADDR13 

34 ADDR12 

33 ADDR11 

32 ADDR10 

31 ADDR9 

30 ADDR8 

28 ADDR7 

27 ADDR6 

26 ADDR5 

25 ADDR4 

24 ADDR3 

23 ADDR2 

20 ADDR1 

19 ADDR0 

90 

DATA0 109 

VSSE 9 

17 

RXD 

44 

ANO/PADA 

45 

AN1/PADA 

46 

AN2/PADA 

47 

AN3/PADA 

48 

AN4/PADA 

49 

AN5/PADA 

52 

AN6/PADA 

53 

AN7/PADA 

42 

VDDA 

43 

VSSA 

BKPT/DSC 

54 

VSTBY 

56 

VDDSYN 

129 

PAI 

126 

PCLK 

128 

PWMA 

127 

PWMB 

66 

TSTME/TS 65 

MODCLK/P 79 

IPIPE0/D 67 

IPIPE1/D 68 

XTAL 55 

EXTAL 57 

XFC 60 

CLKOUT 63 

FREEZE/Q 64 

7 

IC1/PGP0 

ADDR22/C 

6 

IC2/PGP1 

122 

ADDR23/C 123 

130 

IC4/OC5/ 

OC4/OC1/ 

131 OC3/OC1/ 

132 

18 

TXD/PQS7 

PCS3/PQS 

16 PCS2/PQS 

15 PCS1/PQS 

14 PCS0/SS/ 

13 SCK/PQS2 

12 MOSI/PQS 

11 MISO/PQS 

5 

IC3/PGP2 

FC0/CS3/ 

4 

OC1/PGP3 

3 

OC2/OC1/ 

10 

111 

DSACK0/P 89 

DSACK1/P 88 

AVEC/PE2 87 

DS/PE4 86 

AS/PE5 85 

SIZ0/PE6 82 

SIZ1/PE7 81 

R/W 80 

FC2/CS5/ 115 

FC1/CS4/ 114 

D 

D 

C C 

B 

B 

C9 C8 DGND 

.1uF .01uF 

R/W R/W 

CS5 CS5 

DS DS 

DGND 

PCS2 

POWER AND GROUND GROUND PINS FOR U1 - NOT ON SCHEMATIC 

A 

A 

PRODUCT LINE: 

CONFIDENTIAL CONFIDENTIAL AND 

PROPRIETARY INFORMATION 

PROCESS: 

TITLE: 


REV. 

D 

SCALE 

PART NO. 

SHEET OF 

8 7 6 5 

4 3 

2 

1 

R100 

10.0K 

R101 

10.0K 

R102 

10.0K 

R103 

10.0K 

R104 

10.0K 

R105 

10.0K 

R106 

10.0K 

10.0K 

R99 

.1uF 

C47 

.001uF 

C22 

47.5K 

R51 

47.5K 

R32 


C91 

100pF 

C96 

100pF 

C97 

100pF 

C99 

100pF 

R108 

47.5K 

R109 

47.5K 

R110 

* 

R111 

47.5K 

R112 

47.5K 

R42 

47.5K 

47.5K 

R107 

47.5K 

R113 

47.5K 

47.5K 

R28 

R30 

825.0 

R29 

.1uF 

.001uF 

C85 

C35 

24.3K 

R157 

10pF 

C95 

.01uF 

10.0K 

C11 

R31 

R23 

332K 

B.4 Pressure Control 

PP16 

18.2K 

R68 

100 

R155 

C102 

C101 

.01uF 

.01uF 


PCA Pressure Control Board CPU

1 

2 

3 

4 

5 

6 

7 

8 


J5:I 9 


J5:H 8 


J5:G 7 


J5:D 4 


J5:F 6 

R6 

10 

R7 

10 

R8 

10 

R10 

10 

HALL-C 

D 


J5:E 5 

.1uF 

C50 

.1uF 

C49 

10 

R11 

* 

+24V 

TP10 

U11 

8 

VIN 

7 

GND 

6 

GND 

NC 

LM78L15ACM 

4 

GND 3 

GND 2 

VOUT 

5 

NC 

1 

MOTGND PP13 PP12 MOTGND 

D 

100pF 

C138 

100pF 

C137 

100pF 

C136 

MOTGNDMOTGNDMOTGND 

MOTGND 

+24V 

+24V 

+5V +5V 

C7 

2 

1000uF 

MOTGND 

D 

C132 

63V 

ERROR AMP 

R223 

Q3 

1 

MTP75N06HD 

.01uF 

ZERO 

BLOWER_DAC 

3 

DGND 

AGND 

U34:B 

MOTGND 

MOTGND 

C123 

DRIVEA 

100V 


.1uF 

J5:A 1 

CRTL +5V 

2 D 

LM556CM 

(7=DGND, 14=+5V) C133 

R224 

Q4 

1 MTP75N06HD 

.01uF 

ZERO 

3 

R227 

MOTGND 

PWM 

DGND 

R49 

ZERO 

PP1 

2 

MOTGND 

D 

* 

C122 

Q7 

1 MTP75N06HD 

100V 

.1uF 

3 

DRIVEB 


J5:B 2 

2 D 

R226 

Q6 

1 MTP75N06HD 

C124 

ZERO 

100V 

3 

.1uF 

MOTGND 

2 

MOTGND 

D 

R228 

Q8 

1 MTP75N06HD 

ZERO 

3 

DRIVEC 

CONN M 9 9 PIN 198 

J5:C 3 

2 D 

R225 

Q5 

1 MTP75N06HD 

ZERO 

3 

R195 

MOTGND 

4.99K 

11 

DSCH 13 

TSHLD 12 

R232 R233 

+5V 

24.9K 15.0K 

SI9979CS 

3 

8 

43 U12 42 

1 

TRIG 

U32:A R243 

VDD V+ 

2 

9 

OPA4277UA 

OUT 

1 

HA 

10.0K 

(4=+12V, 11=-12V) 

10 

RS 

2 

HB 

R234 

3 

HC 

274.0KC135 

4 

GBA 

60/120 

.22uF 

5 

EN 

6 

F/A 

R237 

7 

Q 

4.99K 

8 

PWM 

9 

BRK 

10 

TACH 

11 

FAULT 

12 

GND 

RT/CTRTIS- 

IS+ 

17 18 20 19 

33 

SA 35 

CAPA 36 

GTA 34 

GBB 29 

SB 31 

CAPB 32 

GTB 30 

GTC 26 

CAPC 28 

SC 27 

GBC 25 

C C 

5 

2 

U22:A 

C134 

4 

LM2901 

.1uF 

(3=+12V, 12=AGND) 

MOTORFAULT 

MOTGND 

AGND AGND 

MOTOR ENABLE (1 = RUN, 0 = COAST) 

BENABLE 

C117 

B 

+4096 MVDC BUFFERED 

VREF-BUF 

B 

1000pF 

+12V 

7 

C151 

1 

U22:B 

6 

47pF 

LM2901 

(3=+12V, 12=AGND) 

MOTGND 

9 

14 R198 

R196 

C118 

U22:C 

8 

100 

10.0K 

1000pF 

LM2901 

(3=+12V, 12=AGND) 

+ 

.1uF 

C13 

.1uF 

100V 

C128 

4.99K 

R197 

8.66K 

R235 

CR1 

MBRS1100T3 

.1uF 

C48 

CR5 

MURS120T3 

10.0K 

R236 

.1uF 

100V 

C129 

CR2 

MBRS1100T3 

MMBD914LT1 

1 3 

CR25 

MURS120T3 

MBRS1100T3 

MURS120T3 


CR6 

.1uF 

100V 

C130 

10.0K 

R194 

CR3 

95.3K 

R199 

CR4 


2W 

.010 

R5 

24.3K 

R27 

1000pF 

C2 

+5V 

AGND 

MMBD914LT1 

1 3 

CR26 

R238 

1.00M 

HALL-C 

MOTGND 

A 

SPARES 

VISION 

U12 - 37 = MOTGND 

U12 - 38 = MOTGND 

U12 - 39 = MOTGND 

U12 - 40 = MOTGND 

U12 - 41 = MOTGND 

U12 - 13 = MOTGND 

U12 - 14 = MOTGND 

U12 - 15 = MOTGND 

U12 - 16 = MOTGND 

+5V 


MOTOR CONTROLLER 

DRAWING NO. 

REV. 

S1001365 6 

PART NO. 

SHEET OF 

N/A 1001365 2 5 

1 

SCHEMATIC 

+12V 

11 

13 

U22:D PP31 

10 

LM2901 

(3=+12V, 12=AGND) 

SPEED INDICATION (2 PULSE/REV) 

A 

PRODUCT LINE: 



BSPEED 


TITLE: 

PROCESS: 

U12 - 44 = MOTGND 

U12 - 45 = MOTGND 

U12 - 46 = MOTGND 

U12 - 47 = MOTGND 

U12 - 48 = MOTGND 

U12 - 21 = MOTGND 

U12 - 22 = MOTGND 

U12 - 23 = MOTGND 

U12 - 24 = MOTGND 

PP32 

PP33 

PP34 

U34:A 

CRTL 

LM556CM 

(7=DGND, 14=+5V) 

3 

DSCH 1 

TSHLD 2 

6 

TRIG 

5 

OUT 

4 

RS 

PP30 

MOTORFAULT 

MOTORFAULT 

SIZE 

D 

AGND 

SCALE 

2 

4 3 

8 7 6 5 

PCA Pressure Control Board - Motor Controller 

1045049 

B-21

B-22 


1 

2 

3 

4 

5 

6 

7 

8 

J4:U 

6B BACKUP 

REF_DAC 

OUTLET 

J6:U 

6B PRESSURE 

CR13 

C63 

5 

DAC 

4.7uF AGND 7 

POUT_BU 

POUT_BU 

20V 

VREF-BUF 

SGL41-60 

U32:B 

6 

U25 

OPA4277UA 

VREF-BUF 

9 CS SDI 8 

(4=+12V, 11=-12V) 

10 SCK LDAC 7 

6A 

J6:F 

11 SDO DGND 

6 

-5V 

VREF-BUF 

12 RFCD RFAB 

5 

6A 

J4:F 

13 TP AGND 

4 

14 VDD VSS 

3 

15 OUTD OUTA 

ILFR DRIVE (0V = OFF, 4V = FULL ON) 

V_ILFR 

2 

DAC-A 

16 OUTC OUTB PRV DRIVE (0V = OFF, 4V = FULL ON) 

V_PRV 

1 

DAC-B 

MAX536BCWE 

BLOWER_DAC DAC-C 

12B 

J4:AA 

12B 

DAC-D 

J6:AA 

2B 

J4:Q SCK 

SCK 

2B 

J6:Q 

3B 

J4:R MISO 

MISO 

3B 

J6:R 

4A 

J4:D MOSI 

MOSI 

4A 

J6:D 

PCS2 

3A 

J4:C PCS2 

3A 

J6:C 

PCS3 

5A 

J4:E PCS3 

5A 

J6:E 

AFM-DETECT 

4B 

J4:S AFM-DETECT 

4B 

J6:S 

OM-DETECT 

5B 

J6:T OM-DETECT 

ADC 

(4=+12V, 11=-12V) 

.1uF 

5B 

J4:T 

OPA4277UA 

C98 

R43 

9 

8A 

8 U32:C 

47.5K 

J4:H AIRTEMP 

1.00K 

AIRTEMP 

R44 

10 

8A 

R150 

J6:H 

1.00K 

O2TEMP 

R45 

8B 

J6:W O2 TEMP 

1.00K 

8B 

J4:W 

ZERO PRESSURE = +475mv 

AGND 

(0 to 4V = -9 to +70cmH2O) 

10B OUTLET 

J6:Y 

PRESSURE 

UNIT OUTLET PRESSURE 

10B 

J4:Y 

PP35 

9A 

J6:I 

C16 C17 C18 C19 C20 

ZERO FLOW = +2048mv 

9A 

TOTAL-FLOW 

(0 to 4V = -100 to +300 SLPM) J4:I 

.1uF .1uF .1uF .1uF .1uF 

TOTAL FLOW 

10A 

J4:J PATIENT 

10A 

J6:J PRESSURE 

-5V AGND 

12A BAROMETRIC 

J6:L 

PRESSURE 

ZERO FLOW = +256mv 

12A 

(4=+12V, 11=-12V) 

J4:L 

(0 to 4V = -10 to +150 SLPM) 

OPA4277UA 

13 

OXYGEN FLOW 

9B 

U32:D 14 

J6:X 

O2-FLOW 

12 

9B 

J4:X 

+5V 

C153 AGND 

J12:B 

CONN M 2 PIN 100 2 

AGND 

.1uF 

FAN 

R254 

AGND 

J12:A CURRENT 

CONN M 2 PIN 100 1 

1.00K 

AGND 

VISION 


SCHEMATIC 

PRESSURE SENSORS 

S1001365 6 

N/A 1001365 3 5 

VREF 

C25 

.1uF 

PCS1 MOSI 

SCK 

MISO 

DGND BLOWER MOTOR DRIVE (4V = MAXIMUM SPEED) 

AGND 

+12V 

OXYGEN VALVE DRIVE (4V = FULL ON) 

R74 

432 

.1% 25PPM 

U13 

AGND 

AGND 

R75 R76 

5 

6.81K 47.5K 

7 

U31:B 

POUT_BU 

REF 6 

AD620AR 

(4=+12V, 11=-12V) 

C72 

OPA4277UA ZERO PRESSURE = +475mv 

C70 

OPA4277UA 

.1uF 

(4=+12V, 11=-12V) (0 to 4V = -9 to +70cmH2O) 

9 

.1uF 

8 U31:C 

UNIT OUTLET PRESSURE 

10 

+10.0V 

-12V 

R82 

R81 

499 

10.0K 

0.1% 25ppm/C 0.1% 25ppm/C 

+5V 

C55 

R17 

AGND 

REF_DAC 

R19 

.1uF 

1.00K 

C54 

10 

R18 

VREF-BUF 

C23 .1uF 

.1uF 

1.00K 

5 

OUT 6 

RG 

+VS 7 

8 

* 

ELC OR RESET WILL CLAMP VREF AND SHUT OFF DAC OUTPUTS TP3 

R65 

VREF-BUF 

3 

10.0K 

1 REF_DAC 

U31:A 

C119 

2 

CR7 

OPA4277UA 

* 

.1uF (4=+12V, 11=-12V) 

RESET 

TP6 3 

MMBD301LT1 

D 

CR8 

Q2 

ELC 

1 BSS123LT1 AGND 

MMBD301LT1 

2 

EEPROM 

+12V 

+5V 

U33 

C86 

CS9 

AGND 

.1uF 

SCK 

SCK 

AGND 

C61 C24 

MOSI 

MOSI 

GND DGND 

4.7uF 

NM93C66EM8 

20V .1uF 

DGND 

MISO 

MISO 

1 RG 

2 

-IN 

3 

+IN 

4 

-VS 

5 

VCC 8 

SDO 4 

O2TEMP 

O2TEMP 

PCS1 

PCS1 

1 

CS 

SCK 

2 

SDK 

MOSI 

3 

SDI 

V_O2 

R72 

8.25K 

MT3 

+V 

AGND 

SM5652 

R73 

AGND 

8.25K 

AGND 

PCS0 

VREF-BUF 

4 

-SO 1 

-V 2 

+SO 3 

(4=+12V, 11=-12V) 

+10.0V 

OPA4277UA 

13 

U31:D 14 

12 

C15 

.1uF 

C46 

C51 

1uF 

.1uF 

R57 

6.81K 47.5K 

383 

.1% 25PPM 

R77 R79 

U6 

C84 

.1uF 

AGND 

REF 

TP5 

AD620AR 

BAROMETRIC PRESSURE 

C26 

0 to 4 VDC equals 

21 to 34 inHg 

.1uF 

-12V AGND 

(+2810mv = 29.92 inHg normal sea level) 

5 

OUT 6 

RG 

+VS 7 

8 

U26 

11 

VREF SHDN 

MAX186CCAP 

C29 

C30 

.1uF 

.1uF 

PATIENT PRESSURE 

.1uF 

0 to 4 VDC equals 

C75 

-20 to +70 cmH2O 

+12V 

(+910mV = zero pressure) 

1 RG 

2 

-IN 

3 

+IN 

4 

-VS 

10 

20 

VDD 

12 

RFADJ VSS 9 

13 

AGND 

DGND 

14 DOUT 

15 SSTRB 

16 DIN 

17 CS 

18 SCLK 

19 

CH7 8 

CH6 7 

CH5 6 

CH4 5 

CH3 4 

CH2 3 

CH1 2 

CH0 1 

C65 AGND 

+ 

4.7uF 

+12V 

20V 

AGND 

R55 

SCK 

232 

.1% 25PPM 

MOSI 

PP36 

U5 

MISO 

* 

TP1 

AGND 

VREF 

REF 

AD620AR 

C64 C28 

C68 

4.7uF 

20V .01uF 

.1uF 

C62 

+ 

DGND 

4.7uF 

20V 

AGND 

AGND 

TP2 

5 

OUT 6 

RG 

+VS 7 

8 

R25 3 

10.0K 

1 

0.1% 25ppm/C U14:A +10V 

2 

OPA4277UA 

(4=+12V, 11=-12V) 

R54 

14.3K 

0.1% 25PPM 

R60 

MT1 

C4 

8.25K 

0-1 PSI 

1 RG 

.1uF 

C3 

2 

-IN 

AGND 

C27 

1uF 

3 

+IN 

GND 

.1uF AGND 

4 

R62 

-VS 

AGND 

8.25K 

VREF-BUF 

-12V AGND 

R50 

VREF-BUF 

10.0K 

0.1% 25ppm/C 

4 

VO- 5 

VO+ 3 

5 

12 

7 

14 

U14:D 

U14:B 

6 

13 

OPA4277UA 

OPA4277UA 

(4=+12V, 11=-12V) 

(4=+12V, 11=-12V) 

+10V 

R84 

14.3K 

0.1% 25PPM 

MT2 

0-15 PSI 

VS 

TP+ TP- 

1 6 

R91 

16.2K 

0.1% 25PPM 

VREF-BUF 

2 

GND 4 

VO- 5 

VO+ 3 

D 

D 

C C 

B 

B 

AGND 

R59 

C67 

100K 

.1uF 

C5 

AGND 

4.7uF 

C81 

20V 

.1uF AGND R56 

AGND 

100K 

A 

A 

PRODUCT LINE: 

(4=+12V, 11=-12V) 


R90 

OPA4277UA 


10.0K 9 

PROCESS: 

TITLE: 

0.1% 25ppm/C U14:C 8 

R93 10 

10.0K 

0.1% 25ppm/C 


REV. 

AGND 

D 

SCALE 

PART NO. 

SHEET OF 

8 7 6 5 

4 3 

2 

1 

1045049 

+ 

47.5K 

R80 

+ 

.022uF 

.1uF 

C87 

C71 

6.81K 

R149 

1.00K 

1.00K 


C100 

.022uF 

.1uF 

C78 

0.1% 25ppm/C 

10.0K 

R26 

TP+ 

R47 

R46 

+ 

6 

TP- 

VS 

2 

1 

R165 

10.0K 

0.1% 25ppm/C 

R137 

2.87K 

0.1% 25PPM 

499K 499K 

R48 

.022uF 

C74 

R12 

4.99K 

R85 

10.0K 

0.1% 25ppm/C 

+ 



PCA Pressure Control Board - Pressure Sensors

1 

22 

33 

4 

5 

6 

7 

88 

+24V 

U9 

UN 

5 

1 OPA544 

4 

U18 

2 

3 

PI5A319AW 

5 

4 

VCC 

8 NO 

7 

UN 

NC 2 

6 IN 

GND 3 

PRV DRIVE 

+5V 

C37 

+24V 

.1uF 

MOTGND 

PS1 

R39 

U10 

60V .5A 

C38 

274K 

UN PP49 

.1uF 

-12V R38 

R53 

MOTGND 

10.0K 

10.0K 

J7:B 

22 

PP48 

0.1% 25ppm/C 

PRV 

MOTGND 

J7:A 

CONNECTOR 

11 

PI5A319AW 

MOTGND 

PRV_OPEN 

-12V 

V_PRV 

MOTGND 

R40 

R58 

10.0K 

40.2K 

0.1% 25ppm/C 0.1% 25ppm/C MOTGND MOTGNDMOTGND MOTGND 

MOTGND 

+5V 

C36 

+24V 

.1uF 

MOTGND 

PS2 

R16 

60V .5A 

C42 

274K 

PP51 

.1uF 

-12V R15 

COM 1 

R63 

MOTGND 

10.0K 

10.0K 

J8:B 

PP50 

0.1% 25ppm/C 

2 

MOTGND 

J8:A ILFR 

1 

CONNECTOR 

MOTGND 

J8:C 

3 

ILFR_OPEN 

-12V 

V_ILFR 

MOTGND 

R37 

R64 

10.0K 

40.2K 

0.1% 25ppm/C 0.1% 25ppm/C MOTGND MOTGND 

MOTGND 55 

4 

VCC 

88 NO 

7 

UN 

NC 22 

6 IN 

GND 3 

J11:A 


11 

J15:A 

55 

COM 1 

11 OPA544 

4 

U15 

22 


55 

J15:E 

33 

ALTERNATE POWER 

CONNECTOR FOR THE 


3 DCS (NEW STYLE) 

J15:C 


22 

J15:B 


44 

J15:D 


6 

J15:F 

11 

J11:B J11:B22 J11:C J11:C33 J11:D J11:D44 60V 750MA 

J6-15A, 15B OM VALVE VALVE24V-OM 

24V-OM 

PS3 

11 J1:A J1:A 

+24V 

2 J1:B J1:B 

33 J1:C J1:C 

ACFAIL CONN CONN M 10 PIN 156 

+12V 

J11 

4 J1:D J1:D 

"PASS THRU" 

CONN CONN M 10 PIN N.C. 156 

CONNECTION 

TO THE MCS 

66 J1:F J1:F 

CONN CONN M 10 PIN 156 

77 J1:G J1:G 


J11:G 

88 J1:H 

CONN M 10 PIN N.C. 156 N.C. J11:H J11:H8 9 J1:I 


10 J1:J 


AGND 

MOTGND 

7 

J11:F J11:F6 J11:J 10 

J11:I 99 

J11:E 

OFF/ON 

+5V 

5 

+ 

5 J1:E J1:E 


-12V 

DGND 

+10.0V +10.0V 

U17 

+12V 

79L05VAS 

C73 

2 

R78 

IN OUT 

GND 

.1uF 

1.00K 

1 

C69 

AGND 

U16 

-12V 

4.7uF -5V 

PP41 ELC 

20V LM4040BIM3-10.0 

+5V 

AGND AGND 

AGND 

3 

DD 

DD 

C CC 

LINEAR -12V TO -5V REGULATOR 

C66 

4.7uF 

20V 

BB 

B 

C39 

120uF 

50V 

+ 

R52 

1 

C40 

.1uF 

.01uF 

C41 

C43 

120uF 

50V 

+ 

R61 

1 

C44 

.1uF 

.01uF 


C45 

+ 

ILFR DRIVE 

R22 

10.0K 

ELCSIGNAL 

1000pf 2 1 

FL16 

ELC 

U2:C 

5 6 

MC74HC14A 

(7=DGND,14=+5V) 

U2:B 

3 4 

MC74HC14A 

(7=DGND,14=+5V) 

R21 

221K 

DGND 

ELC 

.1uF 

C32 

Q9 

BSS123LT1 

U2:A 

1 2 

MC74HC14A 

(7=DGND,14=+5V) 

R20 

22.1K 

ELCACT 

B-23 


DGND DGND 

.01uF 

C31 

SPARES 

DGND DGND 

A 

AA 


PRODUCT LINE: 

VISION 



INFORMATION 

U2:F 

13 12 

PP44 

MC74HC14A 

(7=DGND,14=+5V) 


VALVE DRIVERS / ELC 

DRAWING NO. 

REV. 

S1001365 6 

PART NO. 

SHEET OF 

N/A 1001365 44 55 

11 

TITLE: 

PROCESS: 

SCHEMATIC 

DGND 

U2:D 

U2:E 

9 8 

PP42 

11 10 

PP43 

MC74HC14A 

MC74HC14A 

DGND 

(7=DGND,14=+5V) 

DGND 

(7=DGND,14=+5V) 

SIZE 

D 

SCALE 

2 

4 3 

8 77 6 55 

PCA Pressure Control Board - Valve Drivers / ELC 

1045049

B-24 


1 

2 

3 

4 

5 

6 

7 

8 

ADDRESS_BUS 

1045049 

+5V 

J4:A 

1A 

A1 R114 

J4:P 

J2:M 

1B 

ICBDATA0F 

13 

47.5K 

A2 R115 

J2:N 

ICBDATA1F 

14 24 PIN HEADER 

47.5K 

J2:O 

A3 R116 

DGND 

ICBDATA2F 

15 FROM DCS 

+5V 

J2:P 

47.5K 

FL2 

ICBDATA3F 16 

A4 R117 

NFM60R30T222 

+5V 

J4:B 

47.5K 

1 

3 

2A 

A5 R118 

47.5K 

2 

A6 R119 

+5V 

DGND DGND DGND DGND 

47.5K 

J4:G 

+5V 

+5V 

PASS THRU CONNECTOR 

DGND 

7A 

A7 R120 

TO MCS ICB DATABUS 

47.5K 

J4:V 

DGND 

7B 

A8 R121 

* PP47 

J4:M 

PP46 

J3:A 

47.5K 

13A 

1 

A9 R122 

PP45 

J3:B 

J4:AB J4 

PP40 

2 

47.5K 

13B 

A10 R123 

AIR FLOW 

PP39 

J3:C 

3 

47.5K 

+12V 

MODULE 

J3:D 

A11 R124 

FL3 

4 

NFM60R30T222 

AGND 

J4:K 

J3:E 

47.5K 

1 

3 

11A 

5 

A12 R125 

J3:F 

J4:Z 

6 

47.5K 

2 

11B 

A13 R126 

J3:G 

7 

47.5K 

J3:H 

A14 R127 

AGND 

J4:N 

8 

14A 

ADS 

J3:I 

47.5K 

ADS 

9 

A15 R128 

J4:AC 

ATN 

14B 

J3:J 

ATN 

10 

47.5K 

+5V 

A16 R129 

+5V 

J3:K 

ACK 

11 

MOTGND 

47.5K 

R97 

R96 

DGND DGND DGND DGND 

J3:L 

A17 R130 

ELCSIGNAL 

12 

22.1K 22.1K 

J4:O 

J2:Q 

J3:M 

47.5K 

15A 

ICBDATA4F 17 

13 

J2:R 

J3:N 

J4:AD 

ICBDATA6F ICBDATA5F 

18 

14 

+5V 

15B 

J2:S 

J3:O 

19 

15 

ICBDATA7F 

DGND DGND 

J2:T 

J3:P 

20 

16 

D0 R132 

J2:U 

J3:Q 

J6:A 

ADSF 

21 

17 

47.5K 

1A 

J2:V 

J3:R 

D1 R133 

ATNF 

22 24 PIN HEADER 

18 

J6:P 

1B 

FROM DCS 

J3:S 

47.5K 

19 

D2 R134 

J3:T 

20 

47.5K 

D3 R135 

DGND 

J3:U 

21 

47.5K 

J3:V 

D4 R136 

22 

J6:B 

47.5K 

2A 

J3:W 

TXD 

23 

D5 R138 

J3:X 

RXD 

24 

47.5K 

D6 R139 

47.5K 

D7 R140 

J6:G 

DGND 

47.5K 

7A 

D8 R141 

J6:V 

47.5K 

7B 

D9 R142 

J6 

J6:M 

47.5K 

13AOXYGEN 

D10 R143 

J6:AB MODULE 

47.5K 

13B 

D11 R144 

47.5K 

AGND 

D12 R145 

J6:K 

47.5K 

11A 

FL4 

D13 R146 

NFM60R30T222 

J6:Z 

47.5K 

1 

3 

11B 

D14 R147 

47.5K 

-12V 

2 

D15 R148 

J6:N 

47.5K 

14A 

AGND 

J6:AC 

14B 

FL1 

MOTGND 

NFM61R30T472 

J6:O 

1 

3 

15A 

J6:AD 

2 

15B 

*** 

DATA_BUS 

ALTERNATE 20 PIN 

HEADER FROM DCS 

(OLD STYLE) 

ICB INTERFACE 

1A J13:A 

J13:B* 

2A 

ELCSIGNALF 

U4 

3A J13:C* 

D0 

D1 

IN8 

4A J13:D 

D2 

D3 

5A J13:E 

ICBDATA0F 

D4 

6A J13:F 

ICBDATA1F DGND 

D5 

D6 

ATV2500S 

(11,12=+5V, 4,26,33,34=DGND) 

4,26,33,34=DGND) 

2 

IN3 22 

NC 44 

NC 43 

NC 42 

NC 40 

NC 32 

I/O0 5 

I/O1 6 

I/O2 7 

I/O3 8 

I/O4 9 

15 

I/O15 

16 

I/O14 

17 

I/O13 

18 

I/O12 

30 

I/O21 

29 

I/O20 

28 

I/O19 

19 

IN0 

1 

IN9 

37 

I/O9 

I/O7 

39 I/O8 

27 

I/O18 

25 

IN6 

41 

IN13 

23 

IN4 

20 

IN1 

21 

IN2 

24 

IN5 

3 

IN7 

35 

I/O11 

38 

I/O22 31 

I/O17 13 

I/O16 14 

I/O5 10 

I/O10 36 

D7 

A1 

A2 

A3 

* ACK 

+5V 

R98 

22.1K 

DGND 

******** 

7A J13:G 

ICBDATA2F 

8A J13:H 

ICBDATA3F 

9A J13:I 

ICBDATA4F 

10AJ13:J 

ICBDATA5F 

1B J13:K 

ICBDATA6F 

2B J13:L 

ICBDATA7F 

3B J13:M 

4B J13:N 

ADSF 

5B J13:O 

ATNF 

* *** 

D 

D 

6B J13:P 

ACKF 

7B J13:Q 

C N.C. 

C 

8B J13:R 

N.C. 

9B J13:S 

N.C. 

10BJ13:T 

* 

DGND 

ELC 

CS5 

R/W 

J2:W 

DS 

ACKF 

23 

FL17 

NFM51R20P207 

CLKOUT 

J2:X 

ELCSIGNAL 1 

3 

24 

RESET 

J2:A J2:G 

2 

1 

7 

SNDINT 

J2:B 

J2:H 

2 

8 

RCVINT 

DGND 

J2:C 

J2:I 

3 

9 

ADSINT 

ELCSIGNALF 

J2:D 

J2:J 

4 

10 

TXD 

TXD 

J2:E 

J2:K 

5 

11 

RXD 

RXD 

J2:F 

J2:L 

6 

12 

ELCSIGNAL ELCSIGNAL 

BYPASS CAPACITORS 

DGND 

B 

B 

+5V 

+5V 

+5V 

+5V 

+5V 

U1 

U1 

PIN 59 U1 

U1 

U1 

PIN 1 

PIN 8 

PIN 21 

PIN 40 

PIN 61 

DGND 

DGND 

DGND 

DGND 

DGND 

+5V 

+5V 

+5V 

+5V 

U1 

U1 U1 

U1 

U1 

PIN 84 

PIN 98 

PIN 113 

PIN 124 

PIN 54 

3 

3 

3 

3 

2 

FL8 

NFM51R20P207 

2 

FL7 

NFM51R20P207 

2 

FL6 

NFM51R20P207 

2 

FL5 

NFM51R20P207 

1 

1 

1 

1 

R94 

22.1K 

R95 

22.1K 

R89 

22.1K 

R92 

22.1K 

R83 

22.1K 

R86 

22.1K 

R87 

22.1K 

R88 

22.1K 

3 

3 

3 

3 

2 

FL12 

NFM51R20P207 

2 

FL11 

NFM51R20P207 

2 

FL10 

NFM51R20P207 

2 

FL9 

NFM51R20P207 

1 

1 

1 

1 

3 

3 

3 

2 

FL13 

NFM51R20P207 

2 

FL14 

NFM51R20P207 

2 

FL15 

NFM51R20P207 

1 

1 

1 


C112 

.1uF 

C110 

.1uF 

C108 

.1uF 

C106 

.1uF 

C58 

.1uF 


C121 

C127 

.1uF 

C114 

.1uF 

C125 

.1uF 

C126 

.1uF 

.1uF +5V 

AGND 

24V-OM 

PLACE THESE CAPS 

AROUND U1 

DGND 

DGND 

DGND 

DGND 

DGND 

+5V 

+12V 

+5V 

A 

A 


PRODUCT LINE: 

VISION 



+ C33 + C34 

10uF 10uF 

10V 10V 

U32 

U31 

U14 

U32 

U31 

U14 

U22 

U20 U27 U34 

U2 U3 U4 U7 U8 

.1uF 

.1uF 

C94 

.1uF 

C93 

C92 

-12V 

.1uF 

.1uF 

C90 

.1uF 

C89 

.1uF 

C88 

C83 

.1uF 

.1uF 

C80 

.1uF 

C77 

.1uF 

C76 

.1uF 

C60 

.1uF 

C59 

.1uF 

C21 

.1uF 

C6 

C79 


BYPASS - PULLUP - ICB DATABUS 

TITLE: 

PROCESS: 

SCHEMATIC 

REV. 

6 

OF 

5 5 

S1001365 

DRAWING NO. 

SIZE 

DGND 

AGND 

AGND 

DGND 

D 

PART NO. 

N/A 1001365 

1 

SCALE 

SHEET 

2 

4 3 

8 7 6 5 

PCA Pressure Control Board - Bypass-Pullup-ICB Databus


B-25 

B.5 Air Flow Module (AFM) 

1045049 

Air Flow Module

B-26 


1 

22 

3 

44 

5 

6 

77 

8 

1045049 

+12V 

OM-J1 

2B 

SCK 

J1:Q 

R29 

1.00K 

TP11 

R7 

383 

+10V 

R20 

5A 

PCS3 

TP18 +5V 

1.00K 

J1:E 

C1 

2A 

+5V DIG 

.1uF 

J1:B 

+ C30 

DGND 

4.7uF 

20V 

DGND R28 

3B 

MISO 

1.00K 

J1:R 

TP17 

1A 

DGND 

J1:A 

DGND R23 

4A 

MOSI 

+10V 

1.00K 

J1:D 

1B 

DGND 

J1:P 

R15 5B 

9 

OM-DETECT 

U1:C 88 

47.5K J1:T 

10 OPA4277UA 

DGND 

(4=+12V, 11=-12V) 

R4 

8B 

O2 TEMP 

121 

J1:W 

AGND 

R11 

649 

U4 +12V 

+256mv 

At ZERO FLOW 

AGND 

TP9 

R10 R12 12 

23.7K 49.9K 

14 

OXYGEN FLOW (+4V, FS) R6 

9B 

U1:D 

O2 FLOW 

REF 13 

121 

J1:X 

AD620AR 

OPA4277UA 

-12V 

AGND 

(4=+12V, 11=-12V) 

5 

OUT 66 

RG 

+VS 77 

88 

U5 

GND 

NM93C66EM8 

APPROX 2V AT 70 DEG F. 

AGND 

11 RG 

22 

.22uFAGND 

-IN 

3 

+IN 

44 

-VS 

5 

VCC 8 

SDO 4 

1 

CS 

2 

SDK 

3 

SDI 

AGND 

+12V 

TP16 

TP4 

OPA4277UA 

2 

11 U1:A 

R41 

33 

(4=+12V, 11=-12V) 

200 

MT1 

TP8 

HCO4 

200 SCCM/0.2IN H20 

4 

GND1 1 

HC-3 3 

HC+5 55 

VS6 6 

VS2 22 

DD 

D 

3 U7 

11 +2.5V 

TL431CPK 

2 

TP2 

OM-J1 

+24V 

15A 

J1:O J1:O 

+24V 

15B 

J1:AD J1:AD 

+ C24 

1000uF 

TP19 

63V 

PWRGND 

14A 

J1:N J1:N 

PWRGND 

14B 

J1:AC J1:AC 

PWRGND 

+10V 

R21 

1.82K 

BRIDGE 

BALANCE 

CC C 

R1 

OM-J2 

8.25K 

+6VDC 

1 J2:A 


+6VDC 

R2 

8.25K 

AGND 

15K 

0.1% 25ppm/C 

R18 

C13 

1000pF 

4.99K 

0.1% 25ppm/C 

R19 

.1uF 

C5 

R13 

80.6K 

4.99K 

R22 

R14 

20.0K 

22 

3 

CW 

1 

22pF 

C19 

24.9K 

0.1% 25ppm/C 

R26 

24.9K 24.9K 

0.1% 25ppm/C 25ppm/C 

R3 

.22uF 

C21 

1uF 

C10 

22pF 

1uF 

C7 C7 

C20 

.1uF 


C17 

.1uF 

C11 

1N4003 

CR1 

AGND 

AGND AGND 

TP12 

+12V 

22 J2:B 


+12VDC INPUT 

+12V 

.1uF 

C2 

AGND 

AGND 

11A 

J1:K 

+ C14 

4.7uF 

20V 

TP13 

7A 

J1:G 

7B 

J1:V 

+12V_P 

XC2:A 

11 8 

115 OHMS @ 100 MHZ 

-12V 

TP3 

B 

TP5 

DD 

5% 2.4K 

1/4W 

R32 

B 

AGND 

U4 

TP14 

.1uF 

.1uF 

C3 

C4 

-12V 

11B 

J1:Z 

-12VDC INPUT 

XC2:B 

2 77 

115 OHMS @ 100 MHZ 

AGND 

U4 

C15 

4.7uF 

20V 

-12V C8 

B.6 Oxygen Module (OM) 

.1uF 

C8 

AGND 

+ 

AGND 

13A 

J1:M 

13B 

J1:AB 

AGND 

3A 

J1:C 

4B 

J1:S 

6B 

J1:U 

8A 

J1:H 

9A 

J1:I 

10A 

J1:J 

10B 

J1:Y 

12A 

J1:L 

+12V 

-12V_P 

Q1 

IRFR024 

TP1 

G 

LM2901 

U2:D 13 

10 

SS 

11 

U1 

(3=+12V_P, 12=-12V_P) 

TRIANGLE WAVE 

0 TO 4096mv 

AT 300 HZ. 

+12V_P 

PWRGND 

PWRGND 

R5 

75K 

U1 

AGND 

.1uF 

.1uF 

C9 

C6 

-12V 

+12V 

+12V_P 

XC2:C 

XC2:D 

33 6 

4 5 

115 OHMS @ 100 MHZ 115 OHMS @ 100 MHZ 

R16 

1.50K 

CR2 

CMPSH-3TR 

1 3 

LM2901 

6 

R8 

U2:B 1 1.82K 

7 

(3=+12V_P, 12=-12V_P) 

LM2901 

44 

U2:A 22 

55 

(3=+12V_P, 12=-12V_P) 

.1uF 

C16 

* 

C26 

PWRGND 

.1uF 

C29 

.1uF 

C28 

PWRGND 

+4.096 VDC 

AGND 

PWRGND 

R9 

10.0K 

6A 

J1:F 

A 

* 

C23 

A 


PRODUCT LINE: 

VISION 

CONFIDENTIAL CONFIDENTIAL AND 

PROPRIETARY PROPRIETARY INFORMATION 

+12V_P 

+12V_P 

TP6 TP6 

VISION OXYGEN MODULE 

PCA 

TITLE: 

PROCESS: 

-12V_P 

U2 

0 TO +4.096 VDC DAC-D 

PWRGND 

SCHEMATIC 

.1uF 

C18 

S1000699 

LM2901 

8 

U2:C 14 

9 

(3=+12V_P, 12=-12V_P) 

C12 

.1uF 

U2 

OPA4277UA 

U1:B 77 

R42 

1.00K 

12B 

J1:AA 

6 

(4=+12V, 11=-12V) 

55 

* 

C25 

REV. 

DRAWING NO. 

SIZE 

4 

1 

D 

1 

PART NO. 

1000699 

1 

N/A 

PWRGND 

PWRGND 

AGND 

OF 

SHEET 

SCALE 

PWRGND 

PWRGND 

2 

4 3 

8 77 6 5 

Oxygen Module


B-27 

B.7 Power Supply 

1045049 

Power Supply Subsystem

1045049 

LH /RICT 05/31/07

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