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ViewSonic Corporation
Confidential - Do Not Copy
Q19wb-3
42
6. Troubleshooting Flow Chart
1.No power
NO
No Power
Change Power Board
Check Power Module
Output CN101
Pin 5,6 = 5V?
Check Scalar Module
Output CN4
Pin 5,6 = 5V?
OK
Change Cable
From(Power module)CN101 to (Scalar/B)CN4
NO
OK
Check Power Button
From Scalar/B(CN8)
to Button/B(CON1)
NO
Check Cable
Open?
YES
Change Cable
NO
Change Switch or Button Board
Summary of Contents for Optiquest VS11578
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