ViewSonic VA1912W Service Manual - Page 41

Defect Mode, Failure Analysis, Repair, Testing

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Defect Mode Failure Analysis Repair Testing ※ " Panel Change" Should be Performed to Level 3 Repair A Display Noise Power on Display Abnormal Flicker Beat Display Flicker Beat Display Shut Down Display Wave Check PCBA Check Panel Check PCBA Check Panel AD/B Change Power/B Change Inverter/B Change CNT/B Change Panel Change AD/B Change Power/B Change CNT/B Change Panel Change No Backlight Check Adapter Adapter Change Next Step NG TEST B Completed ViewSonic Corporation 38 Confidential - Do Not Copy VA1912w-2_VA1912wb-2

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Defect Mode
Failure Analysis
Repair
Testing
Check PCBA
Power on
Display
Abnormal
Flicker
Next Step
TEST
NG
A
Completed
AD/B Change
CNT/B Change
Inverter/B Change
Power/B Change
Check Panel
Display Noise
Beat Display
Shut Down
Beat Display
Flicker
No Backlight
Display Wave
B
Panel Change
Adapter Change
Check Adapter
※
“ Panel Change” Should be Performed to
Level 3
Repair
Check PCBA
AD/B Change
Power/B Change
CNT/B Change
Check Panel
Panel Change
ViewSonic Corporation
38
Confidential - Do Not Copy
VA1912w-
2
_VA1912wb-
2