AOC 2212ph Service Manual page 34

22" LCD Color Monitor
(2). No Picture
No picture
The button if under
control
OK
Measure U705 PIN2=1.8V
U704 PIN2=2.5V U707/U706 PIN2 3.3V
OK
X401 oscillate
waveform is normal
OK
Check HS/VS from
CN102 is normal
Replace U401
NG
NG
NG
OK
X402 oscillate
waveform is normal
OK
Check reset circuit of
U402
OK
Check U402
NG
Change U705 U704 U706 or,U707
U704 PIN2=2.5V U707/U706 PIN2 3.3V
Change X401
Check Correspondent
component
34
AOC 2212ph
NG
Replace X402
NG
Check Correspondent
component