ViewSonic VG2021m-1 Service Manual page 54

Defect Mode
Power ON/OFF
Abnormal
LED Display
Abnormal
ViewSonic Corporation
Failure Analysis
¡° " Panel Change" Should be Performed to
stage
No Power
Turn Off
Abnormal
LED Off
LED Dark
LED Abnormal
LED Loss
LED Flicker
Check PCBA
Check PCBA
Check Wire
Check Wire
Check Adapter
Check PCBA
Check Wire
Next Step
Confidential - Do Not Copy
51
Repair Testing
Level 3
Repair
AD/B Change
Power/B Change
CNT/B Change
Inverter/B
OSD/B Change
OSD Cable
AC Power Change
DC Power CNT
Cable Change
Adapter Change
AD/B Change
Power/B Change
Inverter/B
OSD/B Change
OSD Cable
DC Power CNT
Cable Change
Adapter Change
NG
TEST
Completed
VG2021m-1