Lenovo Service Manual L2062bW
37
9.3 Trouble Shooting
Main Board---
No Power
No power
Press power key and look if
the picture is normal
Please reinsert and make sure the AC
100-240V is normal
?
Reinsert or check the power section
Check 5V-CN404, 3.3V-U404;
1.8V-Q409 ,Panel-Vcc-Q405
Check X401 waveform
Replace U401/U403
Replace X401
OK
NG
Check&replace CN404, U404, Q410,
Q409,Q404, Q405
NG
NG
NG
OK
OK
Check flow chart
For the no power
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