Service manual

ViewSonic Corporation Confidential - Do Not Copy Q9b-2
49
C. Performance Troubleshooting
Start
Screen is
flickering?
Change VGA
Cable
Change Main
Board
Bad Uniformity?
Is screen white?
NO
NO
Screen is
scrolling?
LCD Line Defect?
Change
Inverter Board
Change LCD
Module
Change LCD
Module
Check
Connector
Change Main
Board
Change LCD
Module
NO
Yes
No
Change Main
Board
NO
NO
2
NO
YES
YES
YES NO
YES
YES
YES
NO
YES
YES
YES
YES
YES
YES
YES