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Level 3 Repair
8-3-9. Key Back Light
Main Key LED does not work
Yes
U305 pin 6(C303) =3.3V ?
No
Replace U305 using a Heatgun
(look over using an
(must be coming out the signal 3.3V)
Oscillocope)
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
8-24
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