Service manual

Defect Mode Failure Analysis Repair Testing
LED Flicker
LED Off
N
o Powe
r
LED Dark
LED Abnormal
LEDLED
Check Wire
AD/B Change
CNT/B Change
OSD Cable
Inverter/B Change
Power/B Change
OSD/B Change
AC Power Change
DC Power CNT
Cable Change
Adapter Change
Check Adapter
Check Wire
OSD Cable Change
Inverter/B Change
Power/B Change
OSD/B Change
DC Power CNT
Cable Change
Adapter Change
AD/B Change
LED Loss
Turn Off
Abnormal
Check Wire
Check PCBA
Check PCBA
Check PCBA
Completed
NG
TEST
Next Step
LED Display
Abnormal
Power ON/OFF
Abnormal
※ “ Panel Change” Should be Performed to Level 3 Repair stage
44
ViewSonic Corporation Confidential
-
Do Not Copy VA1912W/Wb