Trouble Shooting - HP L1506 Service Manual

15" LCD Color Monitor

9.2 Trouble Shooting

9.2.1 Main Board
No power
No power
Press power key and look
if the picture is normal
NG
Please reinsert and make sure
the AC of 100-240 is normal
OK
Measure U701 PIN2=3.3V
U704 PIN2=1.8V
OK
X401 oscillate waveforms
are normal
OK
Replace U401
NG
Reinsert or check the
Adapter/Inverter
NG
Check CN701 or replace
U701 and U704
NG
Replace X401
31
HP L1506- L1506s