Acer B223W - Page 32

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2. No Picture (LED is orange)
No picture
The button if under
control
X201 oscillate
waveform is normal
Replace U202
Replace X201
Measure U701 PIN2=3.3V
and U702 PIN2=1.8V
Check Correspondent
component
Replace U202
Check X201 oscillate
waveform is normal
Replace U701, U702
OK
OK
OK
OK
OK
NG
NG
NG
NG
Check reset circuit of
U202 is normal
Check HS/VS from
CN101 is normal
Replace X201
Check Correspondent
component
NG
NG
OK