Trouble Shooting - Dell SE178WFPC Service Manual

17" LCD Color Monitor

9.2 Trouble shooting

9.2.1 Main Board
No power
Press power key and look
if the picture is normal
Please reinsert and make sure
the AC of 100-240 is normal
Measure U701 PIN2=3.3V
U702 PIN2=1.8V
X201 oscillate waveforms
are normal
No power
OK
OK
NG
OK
NG
OK
Replace U401
Reinsert or check the
NG
Adapter/Inverter
section
Check CN401 or replace
U701, U702
Replace X201
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Dell SE178WFPC