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5. Trouble shooting
LGE Internal Use Only
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
START
PinA3 of U502 is
high?
FPCB is Crack?
Check the
U502(touch IC)
solderin g
Check the Touch
window FPCB
connection
Yes
No
No
PinA2 of Touch driver
IC(U502) is high(2.9v)?
Yes
No
Check the PMIC
U300(PMB6821)
Yes
CN503 (touch connector)
Replace Touch window with
Front Case
U502 (touch driver IC)
Содержание KP500
Страница 1: ...Service Manual Model KP500 Service Manual KP500 Date October 2008 Issue 1 0 Internal Use Only ...
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Страница 169: ...Note ...
Страница 170: ...Note ...