Power Board - HP CQ1569 Service Manual

15.6" LCD Color Monitor

9.2.2 Power Board

1. No Power
Check AC line volt 110V or 220V
Check the voltage of C907(+)
Check start voltage for the pin8of IC901
Check the auxiliary voltage is between 10V-16V
Check IC901,D900,D901,ZD911,ZD922,IC903
No power
NG
OK
NG
OK
NG
OK
Check AC line
Check F901, bridge rectified circuit
Check R910,R912,R915,IC901
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HP CQ1569