Lenovo L2062bW Service Manual page 39

Lenovo Service Manual
White screen
White screen
Measure Q404-base
is low level?
OK
Check Q405=5V
Or CN403 solder?
OK
Check connector
Replace Panel
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NG
NG
Check around
device
Check X401 waveform
OK
Check U401/U501
OK
Updata soft
Replace U401/U501
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Check flow chart
For the white screen
NG
Replace X401
NG
Check around
device
L2062bW