Dell SP2309Wc - 9.2 Trouble shooting

23" LCD Color Monitor Dell SP2309Wc
53
9.2 Trouble shooting
9.2.1 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 U701 PIN2=3V
U711 PIN2=1V
Reinsert or check the
Adapter/Inverter
section
X401 oscillate waveforms
are normal
Check CN701 or replace
U701, U711
Check U401
Replace X401
OK
OK
OK
NG
OK
NG
NG