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