WB Troubleshooting Form 2.pdf

Field Technician - Trouble Isolation Check Sheet
Action # Perform Visual Audit
Perform
Visual
Audit
1
Perform a visual inspection of all installed components from ODU to IDU including Line of Sight, ODU/Dish Assembly,
Cabling, Connectors, Grounding, Faceplates, Point Off Entry, and also verify correct labeling of TX and RX. All issues
identified in the visual audit, not meeting WildBlue specifications, must be fixed or corrected by the repair technician.
Fix Issues
Found In
Audit
Check Modem Status, Cabling, Signal Acquisition (Additional Information, Go to the "SM Test Procedures" Job Aid)
2 If the modem is plugged into a switched outlet (On/Off switch), confirm the switch is on. PWR ON
CHK PWR
3 After confirming that AC Power is on, check modem lights. Are modem lights on (If Yes go to #9, if No go to #4) Yes - No
4
If there are no lights on at the modem unplug the power, then, disconnect COAX TX/RX and Ethernet cables from the
modem. When COAX and Ethernet cables have been disconnected, re-plug power to the modem.
Disc Cables
5 Now the modem has only power. Is the PWR light On and the RX light flashing (if No go to #6, if Yes go to #7) Yes - No
Check
The modem is Defective. Replace modem and power supply.
Note – Test COAX for shorts, foreign ground and battery. Follow the cable test process to make this determination.
If COAX tests clean, attach TX/RX to new modem.
Test COAX
Prior To
Replacing
Modem
Modem 6 10
Check
COAX
7
If COAX test short, disconnect the COAX TX/RX from the TRIA and retest COAX. If still testing short, check all connectors
and connections, confirming the COAX meets all WildBlue specifications (See Cabling and Connector Requirements section
below or COAX Cable Test Job Aid.). If the COAX short can not be isolated, or COAX does not meet WildBlue
specifications, rerun new COAX and ensure all WildBlue specifications are met before attaching the TX/RX to new modem.
(If COAX cable tests clean, go to #8)
Cable Test -
Test For
Short, Rerun
New COAX
Provision
Check
Elev.
Check
Azimuth
Arm
Angle
4 Point
Test
8 Reconnect the COAX and Ethernet to the Modem and complete the New Modem Provisioning Process.
9 Did modem lock (If Yes, Go to Pointing and Peaking Section. If No, Go to #10)
Disconnect the modem from the normal working location, and reconnect at the ODU. Follow the process to achieve
modem lock at the ODU.
Did modem lock at the ODU (If Yes go to #7, If No go to #11)
11 Record the Elevation indicated on the Work Order
12 Record the Azimuth indicated on the Work Order
13
14
15
Attach Inclinometer to boom arm and record the actual arm angle setting.
Note: Arm Angle = (Elevation (minus) 17.6).
Pointing and Peaking (WB Installation Support Manual Job Aid - Antenna Pointing)
Is arm angle correct (If No re-point and peak according to Work Order settings, If Yes complete the 4-point Push-Pull
test and go to #15)
Did the 4-point Push/Pull test pass (signal level dropped) when pulling/pushing on all 4 points (If No re-point and peak
according to Work Order settings then go to #16, If Yes go to #2)
Provision
New Modem
Modem
Lock (Yes -
No)
Short Cable
ODU
Modem Test
Yes - No
Yes - No
Pointing
Peaking
Reqrd.
16 Was Pointing and Peaking successful (If No, go to #17, If Yes, Go to #2) Yes - No
Swap
TRIA
17
Swap TRIA and re-point.
Was Pointing and Peaking successful with new TRIA (If No, reinstall the original TRIA and follow the Unknown Issues
Process, If Yes, record old Serial #______________, new Serial #______________, and go to #2)
Yes - No

Cabling and Connector Requirements
Cable Length
Cable Spec.
Cable Loops
Connectors
Grnd Block
Ground Runs
Cable length can NOT exceed 150 ft, else new Cable will have to be re-run. How long (feet) is the cable run
All cable must be High Freq. (2.2 GHz) COAX cable and on the WB Approved List (Approved COAX Cable Bulletin). What is
the Model# of the COAX Cable being used/installed
WildBlue requires all Loops (WB approved cable) to be no smaller than 11 inches, or a have a bend radius no smaller then
5.5 inches. What is the Loop Size of your cable
All COAX cable must be terminated with RG6 High Frequency Compression Connectors that are fully weather sealed. Are
Connectors Compliant (If not Compliant, Connectors must be replaced with approved connectors)
Check Grounding and Grounding Block
All COAX cable should terminate on a properly grounded High Frequency Dual Grounding block.
1) For cable runs of less than 20 feet, the Bonding Cable can be #10 gauge copper or a #8 gauge Aluminum wire.
2) For grounding runs that exceed 20 feet, from the DC grounding block to the home ground, an 8 foot grounding rod must be
installed within 20 feet of ground block, and #6 gauge solid copper grounding wire must be run to the home ground from the
rod.
3) For all groundings, the total length of the cable run must exceed the ground run.
4) Grounding and Bonding is required on all WildBlue installs for both the Antenna and the COAX cable.
5) Water (metal) pipe ground should be within five feet of the water entry to the structure and water pipe and in direct earth
contact for at least 10 feet before entering property.
SVT Troubleshooting Matrix
Yes - No
DSSNR
Downstream
Signal-to-Noise
(First)
DSCHPWR
Downstream Channel
Power
(Second)
USTXPWR
Upstream Transmit
Power
(Third)
USSNR
Upstream Signalto-Noise
(Fourth)
Possible Issue
Red - DSSNR
Troubleshoot
1. Line of Site
2. Misassembled Dish
3. MisPointed
4. Bad/Non-Compliant Cable
5. Bad TRIA (resolve 1-4 first)
Green
Red – DSCHPWR
Troubleshoot
1. Long Cable Run
2. Connectors/Ground Block
3. Bad TRIA
1st
DSSNR
2nd
DSCHPWR
3rd
USTXPWR
4th
USSNR
1
2
3
4
Green
Green
Green
Green
Green
Green
SVT Troubleshooting Matrix Explained
Downstream Signal-to-Noise - The technician resolves all DSSNR issues (possible causes appear in the first row of the
chart above) before addressing any other SVT failures.
Status (if known) Red____ Green ____
Downstream Channel Power - If DSSNR is green, and DSRXPWR is red, the technician resolves all DSPXPWR issues
(possible causes appear in the second row of the chart above) before addressing any other SVT failures.
Status (if known) Red____ Green ____
Upstream Transmit Power - If DSSNR and DSRXPWR are green, and USTXPWR is red, the technician resolves all
USTXPWR issues (possible causes appear in the third row of the chart above) before attempting any other SVT failures.
Status (if known) Red____ Green ____
Upstream Signal-to-Noise - If DSSNR, DSRXPWR, and USTXPWR are green, and USSNR is red, the technician resolves
all USSNR issues (possible causes appear in the fourth row of the chart above).
Status (if known) Red____ Green ____
Red - USTXPWR
Troubleshoot
Green
Green
Red – USSNR
Troubleshoot
Green
1. Bad/Non-Compliant Cable
2. Connectors/Ground Block
3. Misassembled Dish
4. Bad TRIA
1. Bad TRIA
OK