Lenovo Service Manual L2062bW
40
Check flow chart
For the no power
Check CN901
100-240V
?
Check rectified voltage-C905
Check AC supply
Check FuseF901/ BD901
L902/BD901/C901/C902
Check voltage of IC901-8pin
check
component R904/R932
Check T901(1-3)out-Vcc
Check D901/R909/C908
Check IC901-drive out
Check MOS-Q901pin(G/D)
Check/replace IC901
Check R910/R938/Q901/T901pri
Around component
Check T901sub rectified out
5V/12V,
Check rectified diode
D920/D921
&fiter capacitor
Check-- open load
Chech opto-couple
IC902&IC903
OK
NG
OK
OK
OK
OK
OK
NG
NG
NG
NG
NG
NG
Power Board---
No Power 5V/12V
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