AOC Wipro WA19W, Руководство по обслуживанию

Страница: 35 / 52

19 ″ LCD Monitor Wipro WA19W
35
No picture (LED orange)
No picture
The button if under control
X401 oscillate
waveform is normal
Replace U401
Replace X401
Measure U701 Pin2=3.3V,
C704(+)=1.8V
Check Correspondent
component
Replace U401
Check X401 oscillate waveform is normal
Check CN701,U701,Q702,Q703
OK
OK
OK
OK
OK
NG
NG
NG
NG
Check reset circuit of
U401 is normal
Check HS/VS from CN101 is normal
Replace X401
Check Correspondent component
NG
NG
OK