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ViewSonic Corporation
Confidential - Do Not Copy
Q19wb-3
43
2.No Characters , Missing one color
Check R101 , 1.8V output
Check or Change Q5
Check R98 , 3.3V output
Check or Change U3
Check CN7 to Panel Signal Output
Check Inverter
From Power
board OK?
Change Power Board
Check X’Tal 14.318Mhz
Change X1
Check H,V SYNC?
Change U4
Check or Change Cable or Panel
Change VGA Cable
No Characters or Missing one color
Check CN4 5V Output
Change Power Board
NO
OK
NO
OK
NO
OK
NO
NO
OK
OK
OK
NO
NO
Summary of Contents for Optiquest VS11578
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