HP L1506 - Page 36

15" LCD Color Monitor HP L1506
36
9.2.2 Power Board
1. No Power
Repeating the start voltage
Check D904 D905 ZD903…
Check IC902,IC903
Check Q904…OLP circuit
NG
OK
Check AC line volt 110V or 220V
OK
Check AC line
Check the voltage of C905(+)
Check F901, BD901
Check start voltage for the pin3 of IC901
Check R906, R907, IC901
The auxiliary voltage (pin 7) is between 10V-16V jumping
1) Check IC901,T901
2) Check D902, D903, ZD904
3) Check IC902, IC903
OK
Check D910, D911,
OK
NG
NG (Stable)
No power
NG
NG
OK