Asus VH222S Service Manual page 60

Service Manual
(3). White screen
White screen
Measure Q404 base
is low level?
OK
Check Q404 and Q405 are
broken or CN403 solder?
NG
OK
Replace Panel
NG
Check Correspondent
component.
X401 oscillate
waveform is normal
NG
OK
Check reset circuit of
U401 is normal
NG
OK
Replace U401
60
ASUS VH222S&VH222D
Replace X401
Check Correspondent
component.