ViewSonic VA1912W Service Manual - Page 44

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Defect Mode Power ON/OFF Abnormal Failure Analysis Repair Testing ※ " Panel Change" Should be Performed to Level 3 Repair AD/B Change Power/B Change No Power Turn Off Abnormal Check PCBA Check PCBA Check Wire Check Wire Check Adapter CNT/B Change Inverter/B OSD/B Change OSD Cable AC Power Change DC Power CNT Cable Change Adapter Change LED Display Abnormal LED Off LED Dark LED Abnormal LED Loss LED Flicker Check PCBA Check Wire Next Step AD/B Change Power/B Change Inverter/B OSD/B Change OSD Cable DC Power CNT Cable Change Adapter Change NG TEST Completed ViewSonic Corporation 41 Confidential - Do Not Copy VA1912w-2_VA1912wb-2

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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
Cable 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
ViewSonic Corporation
41
Confidential - Do Not Copy
VA1912w-
2
_VA1912wb-
2