Service manual

Start
Change
Main Board
Change
Power
Board
Yes
Yes
No
End
Start
Ye s
No
Change
LCD Panel
Change
Main Board
Is screen white ?
Yes
Yes
No
Yes
No
Change
LCD Panel
Change
Main Board
Abnormal Color ?
Yes
Yes
No
Ye s
Replug/Change
FPC Cable
No
1
Yes
No
Change
LCD Panel
Change
Main Board
Is screen black ?
Yes
Ye s
No
Yes
Change
Inverter Board
No
43
ViewSonic Corporation Confidential
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Do Not Copy VP191b/s
6-2-1 Power Circuit Troubleshooting
6-2-2 Performance Troubleshooting