Trouble Shooting - Lenovo L2262W Service Manual

Lenovo Service Manual

9.3 Trouble Shooting

Main Board---
No Power
No power
Press power key and look if
the picture is normal
NG
Please reinsert and make sure the AC
100-240V is normal
?
OK
Check 5V-CN701, 3.3V-U701;
1.8V-U703 ,Panel-Vcc-Q301
OK
Check X401 waveform
OK
Replace U401/U402
NG
Reinsert or check the power section
NG
Check&replace CN701, U701,U703,
Q301,
NG
Replace X401
Rewriting software
37
L2262W
Check flow chart
For the no power