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Level 3 Repair
8-3-9. Key Back Light
Main Key LED does not work
Yes
Check the UCP200 pin
No
Replace UCP200 using a Heatgun
B10 = "H=2.8V" ?
(must be coming out the signal "H")
Yes
Check the output signal of
No
Replace U307 using a Heatgun
U307
(TP : 1pin)
(must be coming out the signal "H")
Yes
#1 : Replace the LED
No
Key LED does not work?
(be possible that the sample has the problem)
(look over the LED light)
#2 : Change PBA
Yes
END
8-22
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