Acer B223W - Bdmr - 22" LCD Monitor Service Manual - Page 33
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3. Panel Power Circuit
Check
Correspondent
component.
White screen
Measure Q304 base
is low level?
OK
Check Q302, Q303,Q304 is
broken or CN301 solder?
NG
OK
Replace PANEL
NG
Check X201 oscillate
waveform is normal
OK
Check reset circuit of
U202 is normal
OK
Replace U202
33
NG
Replace X201
NG
Check
Correspondent
component.