Service manual

17" LCD Color Monitor AOC 177Pk
31
8.2 Trouble Shooting
8.2.1 Main Board
No power
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
U101 PIN2=3V
Reinsert or check the
Adapter/Inverter
section
X301 oscillate waveforms
are normal
Check U101
Replace U402
Replace X301
OK
OK
OK
NG
NG
NG
NG
Replace U401
Replace U402
OK
NG