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White screen
White screen
Measure Q202 base
is high level?
OK
Check Q202 is broken or
CN503 solder?
OK
Replace PANEL
NG
NG
Check Correspondent
component.
Y601 oscillate
waveform is normal
OK
Check reset circuit of
U601 is normal
OK
Replace U601
Page 33 of 47
Lenovo LXB-L17C
NG
Replace Y601
NG
Check Correspondent
component.
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