Key Back Light - Samsung GT-E1175T Service Manual

Level 3 Repair

8-3-9. Key Back Light

Main Key LED does not work
Yes
UCP200 pin T8, V8 =
"H=3.0V" ?
No
Replace UCP200 using a Heatgun
(Wiring POWER ONKEY_1, 2
(must be coming out the signal "H")
& GND
look over using an
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
8-23
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