Service manual

ViewSonic Corporation
51
Defect Mode Failure Analysis Repair Testing
LED Off
No Power
LED Dark
LED Abnormal
LED Flicker
Power ON/OFF
Abnormal
LED Display
Abnormal
Check PCBA
Check Wire
AD/B Change
CNT/B Change
OSD Cable
Inverter/B
Power/B Change
OSD/B Change
AC Power Change
DC Power CNT
Cable Change
Adapter Change
Check Adapter
Check PCBA
Check Wire
OSD Cable
Inverter/B
Power/B Change
OSD/B Change
DC Power CNT
Cab
le Change
Adapter Change
AD/B Change
LED Loss
Turn Off
Abnormal
Check PCBA
Check Wire
Next Step
TEST
NG
Completed
※ “ Panel Change” Should be Performed to Level 3 Repair
stage
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