SW-HF 5.1 4500 SERVICE GUIDE.pdf - Genius

Service Guide SW-HF 5.1 4500 

SERVICE GUIDE 

KYE SYSTEM CORP 

Version 1.1 Page 1 of 33


Revision History 

Version Date Change 

1.0 23/12/2010 



Table of Contents 

Revision History………………………………………………………………….2 

Table of contents……………………………………………………………...…3 

Getting Start…………………………………………………….………………...4 

Conventions Used in this Guide…………………………………………….…4 

Safety Precautions………………………………………………………………4 

Chapter 1. How to Handle Defective Returns……………………………….5 

1.2 Problem………………………………………………………………………6 

1.2.1 No power,LED (indicator)unlighted………………………….……7 

1.2.2 No sound…………………………………………………………….…….8 

1.2.3 Front channel no sound (including either FR or FL no sound)….……9 

1.2.4 Rear channel no sound (including either RR or RL no sound)...……10 

1.2.5 Center no sound…………………………………………………………11 

1.2.6 Woofer no sound………………………………………………….…..…12 

1.2.7 Input no sound………………………………………………….……..…13 

1.2.8 Remote control no use………………………………….………….…...14 

1.2.9 Noise………………………….……………………….……………..….15 

1.2.10 LED indicators abnormal…………………………………….………..16 

1.2.11 Keystrokes in the front panel no use…………………………………17 

Chapter 2. Specification…………………………………………………..……18 

Satellite…………………………………………………………………….…….18 

Woofer……………………………………………………………………………19 

Chapter 3. Block diagram…………………………………………..………….20 

Chapter 4. Exploded view………………………………………………………21 

Subwoofer……………………………………………………………….……….21 

Satellite (Center)…………………………………………………..…….………22 

Satellite (Front)……………………………………………………..…………...23 

Satellite (Rear)……………………………………………………..……………24 

Chapter 5. Part list…………………………………… …………….…………...25 

Woofer………………………………………………………….………………..26 

Center…………………………………………………………………………...26 

Rear………………………………………………………………….…..……...26 

Front………………………………………………………………..……..……..26 

Chapter 6 Important notes……………………………………………………….27 

Chapter 7 Circuit diagram………………………………………………………..28 

SW-HF 5.1 4500 MCU SCH…………………………………….…….….…………....28 

SW-HF 5.1 4500 input and SPOUT SCH……… ……..……………..……..29 

SW-HF 5.1 4500 SAT AMP SCH……………………………………………….30 

SW-HF 5.1 SWAMP SCH…………………………………..…………………...31 

SW-HF 5.1 4500 SWAMP and Power SCH……………………………………32 

SW-HF 5.1 4500 REM SCH……………………………………………………..33 



Getting Started 

Conventions Used in the Guide 

Pay Special Attention: Instructions that are important to remember and may prevent 

mistakes. 

Caution: Information that, if not followed, may result in damage to the product. 

Safety Precautions 

The following precautions should be observed in handing the speaker described in 

this guide: 

Place the speakers on a flat, level and stable surface. 

Do not place the speakers in environments subject to mist, smoke, vibration, 

excessive dust, salty or greasy air, or other corrosive gases and fumes. 

Do not drop or jolt the speakers. 

Do not allow anything to drop into the subwoofer case through its ventilator, as it 

could result in fatal electric shock or fire. 

Place the unit far enough from other equipments for good heat dissipation. 

Do not perform any maintenance with wet hand. 

Prevent foreign substance, such as water, other liquids or chemical, from entering 

the speakers while performing maintenance procedures on the speakers. 



Chapter 1. How to Handle Defective Returns 

1.1 Overview 

Receiving Defective speaker from customers 

Verifying problems 

Proceeding 

Necessary tests 

Function NG 

Function NG 

Function OK 

Analyzing possible 

Malfunction cause 

Deciding & proceeding the 

Rectification methods 

Replace necessary 

Defective parts 

Verifying problems 

Proceeding 

Necessary tests 

Function OK 

Return the speakers with proper 

repacking to customers 



1.2 Problems 

Item 

Problem Description 

1.2.1 No power,LED (indicator) 

1.2.2 No sound 

1.2.3 Front channel no sound (including either FR or FL no sound) 

1.2.4 Rear channel no sound (including either RR or RL no sound) 

1.2.5 Center no sound 

1.2.6 Woofer no sound 

1.2.7 input no sound 

1.2.8 Remote control no use 

1.2.9 Noise 

1.2.10 LED indicators abnormal 

1.2.11 Keystrokes in the front panel no use 



*Attention 

Please follow the numbered sequence marked within parenthesis given in 

individual 

Flow chat in that this is the best-recommended sequence to rectify the problems. 

1.2.1 No power,LED (indicator)unlighted 

Problem 

No power,LED (indicator) 

Analyze 

and 

identify 

the 

causes 

1. Defective transformer 

2. Defective or damaged 

AC cable or power switch 

1. Defective connection 

between SW-HF5.14500 MCU 

PCB JK3 and SW-HF5.1 4500 

AMP PCB JACK1 

1. PCB dried soldered or broken 

2. Defective or damaged IC2, IC2, CR1 

in SW-HF5.14500 MCU PCB 

Solutions 

Repair or 

replace 

Repair or 

replace 

resolder or replace 



1.2.2 no sound 

Problem 

No sound 

Analyze and 

identify the 

causes 

1. PCB damaged, dry-soldered or 

short-circuited 

2. Assembled wires loosely- connected 

between SW-HF5.1 4500 MCU PCB 

JK3 and SW-HF5.1 4500 AMP PCB 

1. Defective IC or IC2 onSW-HF5.1 4500MCU 

PCB 

2. Defective :IC3, IC16,R111,R112,R108, 

EC36,EC38, EC39,in SW-HF5.1 4500 AMP 

PCB 

] 

Solutions 

Resolder or replace 

Check and replace defective 

IC or components. 



1.2.3 Front channel no sound (including either FR or FL no sound ) 

Problem 

Front channel no sound (including either FR or FL no sound) 

PCB damaged, 

Defective connection of 

1.defective IC3, IC4,IC5,IC7,IC9 or 

dry-soldered or 

front speaker cables and 

components related in SW-HF5.1 

Analyze and 

short-circuited; 

jacks, or defective 

4500 AMP PCB 

identify the 

speaker cables, jacks or 

causes 

front driver units 

Solutions 

Resolder 

replace 

or 

Re-connect 

replace 

or 

Check and replace 

defective IC or 

components 



1.2.4 Rear channel no sound (including either RR or RL no sound) 

Problem 

Rear channel no sound (including either RR or RL no sound) 

PCB 

damaged, 

Defective connection 

Defective 

1. Defective IC3, IC4, 

Analyze and 

identify the 

causes 

dry-soldered or 

short-circuited 

of rear speaker 

cables and jacks, or 

defective speaker 

cables, jacks or rear 

connection of rear 

audio cables, or 

JACK 

disconnected from 

IC6,IC10 or components 

related in 

SW-HF5.1 4500 AMP 

PCB 

driver units 

PCB or defective 

Repair or 

Repair or 

Repair or 


replacing 

replacing 

replacing 

defective IC or 

Solutions 

components 



1.2.5 Center no sound 

Problem 

Center no sound 

Analyze and 

identify the 

causes 

PCB 

dry-soldered, 

broken, or short 

circuit 

Defective 

connection of 

center speaker 

cables and 


of center audio 

cables, or JACK 


1. Defective IC3, 

IC4,IC5,IC11 or 

components related in 

SW-HF5.1 4500 

jacks, 

or 


AMP PCB 

defective 

speaker cables, 

jacks or center 

driver units 

Check 

Reconnect 

Reconnect 

Check and replace defective 

Solutions 

soldering 

points on 

or replace 

or replace 

IC or components 

PCB, and 

resolder 



1.2.6 Woofer no sound 

Problem 

Woofer no sound 

Analyze and 

identify the 

causes 

PCB 

dry-soldered, 

broken, or 

short circuited 

Defective 

connection of sub 

speaker cables 

and jacks, or 

defective speaker 

cables, jacks or 


of woofer audio 

cables, or JACK 



1. Defective IC3, 

IC4,IC7,IC8,IC12 or 

components related in 

SW-HF5.1 4500 AMP 

PCB 

woofer driver units 

Repair 

Reconnect 

Reconnect 

Check and replace defective IC 

Solutions 

or replace 

or replace 

or components 

- 



1.2.7 Input no sound 

Problem 

Input no sound 

Analyze and 

TV(CD/MP3) 

input no sound 

GAME input no 

sound 

DVD input no 

sound 

identify the 

causes 

1. Defective input RCA jack 



2. Defective IC3 in 



SW-HF5.1 

4500AMP 





PCB or TV- input-related 

PCB or GAME - 

PCB or DVD- input-related 

components 

input-related components 

components 

Solutions 

Check 

replace 

and 

Check 

replace 

and 

Check 

replace 

and 

Version 1.1 Page 13 of 33 

Service Guide SW-HF 5.1 4500

1.2.8 Remote control no use 

Problem 

Remote control no use 

Analyze and 

identify the 

causes 

1. Low power supply 

of the battery 

2.Defective 

soldering of battery 

spring 

Remote PCB 

broken, or its IC or 

other components 

defective 

Defective 

conductive rubber 

of some keys 

Defective 

or 

dry-soldered REM1, 

IC2,R1,EC1,CC1 in 

SW-HF5.1 4500 MCU 

PCB 

Replace or 

Check 

and 

Check and 

Check and 

Solutions 

repair 

replace 

replace 

replace 



1.2.9. Noise 

Problem 

Noise 

Analyze and 

identify the 

causes 

Broken or dry-soldered 

PCB, or diode damaged 

The power supply of IC is 

normal or not 

1. Defective driver units 

2. Or caused by the vibration 

from the too long lead wire of 

the driver units 

Resolder or replace Check and replace Resolder or replace 

Solutions 



1.2.10. LED indicators abnormal 

Problem 

LED indicators no light 

Analyze and 

identify the 

causes 

1. Defective, dry-soldered, or broken SW-HF5.1 4500 MCU 

PCB 

2. LED1, IC2, IC1 damaged 

3. R3-R10 SW-HF5.1 4500 MCU PCB 

Solutions 




Chapter 2. Specifications 

Satellite 

NO DESCRIPTION UNIT 

NOMINAL 

CEN FR FL 

LIMIT 

1 RATED OUTPUT POWER @THD 10% W 16 16 16 ≧15.5 

2 SENSITIVITY (1KHz) @RATED O/P POWER m V 500 600 600 ±10% 

3 SENSITIVITY (1KHz) @1W O/P POWER m V 100 120 120 ±10% 

4 MAX INPUT LEVEL@1% THD m V 380 430 430 ±10% 

5 

FREQUENCY RESPONSE(1KHz -3DB ) 

LOW 

Hz 95 95 95 ±10 

6 FREQUENCY RESPONSE(1KHz -3DB ) HI KHz 360 400 400 ±20 

7 S/N@RATED O/P POWER d B 84.5 84.5 84.5 ≧70 

8 CHANNEL UNBALANCE @REF O/P POWER d B 0.2 0.2 ≦0.5 

9 

CHANNEL SEPARATION(ONE 

CHANNELIN;OTHER CHANNEL INPUT 

d B 54.5 54.5 ≧40 

SHORTING 

10 

HUM NOISE (VOLUME MAX;INPUT 

SHORTING) 

m V 0.6 0.6 0.6 ≦2 

11 

HUM NOISE (VOLUME MIN INPUT 

SHORTING) 

m V 0.5 0.5 0.5 ≦1 


Service Guide SW-HF 5.1 500 

Chapter 2 Specifications 

Woofer 

NO DESCRIPTION UNIT NOMINAL LIMIT 

1 RATED OUTPUT POWER@100Hz(10%THD) W 45 ≧42.5 

2 SENSITVITY(100Hz)@RATED O/P POWER m V 130 ±30 

3 SENSITIVITY(100Hz)@1W O/P POWER m V 18 ±5 

4 MAX INPUT LEVEL@1% THD m V 100 ±15 

5 DISTORTION@100Hz REF O/P POWER % 0.1 ≦0.5 

6 

FREQUENCY RESPONSE (100Hz 

-3DB)LOW 

Hz 22 ±5 

7 FREQUENCY RESPONSE (100Hz -3DB)HI Hz 145 ±15 

8 S/N RATIO@100Hz RATED O/P POWER d B 82 ≧70 

9 VR MIN NOISE (INPUT SHORTING) m V 0.5 ≦1 

10 VR MAX NOISE &HUM (INPUT SHORTING) m V 1 ≦2 



Chapter 3 Block diagram 


Service Guide SW-HF 5.5005 

Chapter 4 Exploded view 

Subwoofer 




Satellite (Center) 




Satellite (Front) 




Satellite (Rear) 



Chapter 5 Part list 

Woofer 

Ref. NO Description Part NO 

1 Front Panel EP40360361 

2 Transparent LED cover EP41410038 

3 plastic post for LED EP41410033 

4 big keystroke on the front panel EP40716215 

5 small keystrokeS on the front panel EP40714221A 

6 SW-HF5.1 4500 MCU 94HB PCBA EP15450002 

7 Wooden woofer cabinet EP53450001B 

8 heat sink (radiator) EP23011054 

9 SW-HF5.1 4500 AMP 94V0 PCBA EP15450001 

10 SW-HF5.1 4500 metal back cover EP21100087 

11 power switch EP19030008 

12 black cable pull- relief EP41610059 

13 transformer, 230V/50HZ/12V*2-3.5A/76*35 型 EP13500091 

14 bass tube -1 EP41510022 

15 basstube -2 EP41510040 

16 rubber feet, φ18*3MM EP73060098 

17 driver unit, A-170-5 EP16060004 

18 black metal grill EP61000143 



Chapter 5 Part list 

Center 


1 satellite ring EP40910425 

2 cloth grill EP64000204A 


4 wooden center satellite, 067 EP53Y06701B 

5 LOGO plate EP41260069 

6 ruuber feet, φ12*2MM EP73060099 

Rear 





4 wooden Rear cabinet , 066 EP53Y06601B 


6 rubber feet, φ12*2MM EP73060099 

Front 





4 wooden front cabinet, 068 EP53Y06801B 


6 rubber plate, φ12*2MM EP73060099 



Chapter 6. Important Notes 

6.1 Packing requirement for sending the PCB assembly by post 

PCB assembly is a kind of sophisticated electronic circuit board. 

Well packing will be required when sending them by post. 

*Some sophisticated IC components are mounted on the PCB 

assembly; hence it is necessary to pack each PCB assembly 

with a separate static protecting bag, in order to avoid static 

electricity. 

*Reliable external packing is also very important when sending 

the PCB assembly by post, in that it would avoid unnecessarily 

lost or damage. 

6.2 Short of spare parts while repairing a speaker system 

If you are short of spare parts when you have some speaker 

systems waiting to be repaired, it would be recommended to take 

the necessary parts from one 

Speaker system, so that you may have the as many speaker 

systems 



Chapter 7. Schematic diagram 

SW-HF 5.1 4500 MCU SCH 




SW-HF 5.1 4500 input and SPOUT SCH 




SW-HF 5.1 4500 SAT AMP SCH 




SW-HF 5.1 SWAMP SCH 




SW-HF 5.1 4500 SWAMP and Power SCH 




SW-HF 5.1 4500 REM SCH

SW-HF 5.1 4500 SERVICE GUIDE.pdf - Genius

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