Hanns.G AG172D Service Manual page 36

17" LCD Color Monitor
No picture (LED orange)
No picture
The button if under
control
OK
Measure U702 PIN2=3.3V
OK
X401 oscillate
waveform is normal
Check HS/VS from
CN405 is normal
Replace U401
NG
NG
OK
NG
OK
X401 oscillate
waveform is normal
OK
Check reset circuit of
U401 is normal
OK
Replace U401
NG
Replace U702
Replace X401
Check Correspondent
component
36
Hanns.G AG172D
NG
Replace X401
Check Correspondent
NG
component