HP 2009f User Manual

20" LCD Color Monitor HP 2009M&2009F
35
9.2.2 Power Board
1. No Power
Check AC line volt 110V or 220V
OK
Check AC line
Check the voltage of C905(+)
Check F901, bridge rectified circuit
Check start voltage for the pin8of IC901
Check R904, R905,IC901
Check the auxiliary voltage is bigger than 10V and smaller
than 20V
Check Q901,D900,D906,D908,Q903,U903,D907,ZD902
OK
OK
No power
NG
NG
NG
Check IC901,D901,C908
NG
OK
Check IC901 pin5 PWM wave
OK
Check IC901
NG

HP 2009f Specifications

General

Brand	HP
Model	2009f
Category	Monitor
Language	English