AOC 203Vwa Service Manual page 33

20" LCD Color Monitor
No picture (LED orange)
No picture
The button if
under control
OK
Measure U301 PIN2=3.3V
U304 PIN2=1.8V
OK
X201oscillate
waveform is normal
OK
Check HS/VS from
Replace U401
CN101 is normal
OK
Replace U203
NG
NG
Replace
U301,U304
NG
NG
X201 oscillate
waveform is normal
OK
Check reset circuit of
U203 is normal
OK
Check U203
Replace X201
Check Correspondent
component
33
AOC 203Vwa
NG
Replace X201
NG
Check Correspondent
component