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6. Troubleshooting Flow Chart
6.1 No Power & Power LED Off
Check primary
rectifier voltage
Check pin7 of IC802
voltage about 16V
Check pin2 of IC802 voltage
about 3V
Check pin5 of IC802
voltage is below 1.4V
ViewSonic Corporation
No power
END
Check circuit if
short
Check F801, P801,
RT,801,D801
CheckC810,D803,C807,
Check primary OVP, OLP
and secondary
Check R804, R805
71
Confidential - Do Not Copy
Check IC802,
C804, T801,
VX2450W/WM-LED-1
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