Trouble Shooting; Main Board - Planar PE2010 Service Manual

20" LCD Color Monitor

9.2 Trouble Shooting

9.2.1 Main Board

1、No power
No power
Press power key and
look if the picture is normal
OK
Please reinsert and make sure
the AC of 100-240 is normal
OK
Measure U702 PIN2=3.3V
Q702 PIN2=1.8V
OK
X401 oscillate waveforms
are normal
OK
Replace U401
NG
NG
NG
Replace X401
33
Reinsert or check
the Adapter/Inverter
Check CN701 or replace
U702, Q702
Planar PE2010