Trouble Shooting - Dell E177FPc Service Manual

17" LCD Color Monitor

8.2 Trouble shooting

No power
Measure U701 PIN2= 3.3V
U702 PIN2= 1.8V
NG
OK
X401 oscillating waveform is
normal
NG
OK
Reset signal is normal
NG
OK
Replace U401
NG
Replace U402
Measure CN701
PIN9/10= 5V
NG
OK
Check U701, U702, D704
Check X401, C427, C428
Check R421, R422
41
Dell E177FPc
Check power section