Lenovo L2062W Service Manual page 40

Lenovo Service Manual
Power Board---
No Power 5V/12V
Check CN901
100-240V？
OK
Check rectified voltage-C905
OK
Check voltage of IC901-8pin
OK
Check T901(1-3)out-Vcc
OK
Check IC901-drive out
OK
Check MOS-Q901pin(G/D)
OK
Check T901sub rectified out
5V/12V,
NG
Check AC supply
NG
Check FuseF901/ BD901
L902/BD901/C901/C902
NG
check component R904/R932
NG
Check D901/R909/C908
NG
Check/replace IC901
NG
Check R910/R938/Q901/T901pri
Around component
Check rectified diode
NG
D920/D921
&fiter capacitor
Chech opto-couple
IC902&IC903
Check-- open load
40
Check flow chart
For the no power
L2062W