LG KT520 Service Manual page 88

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Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
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CN503
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< Main Board ñ Top side >
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4. TROUBLE SHOOTING
Pin #11 ~ #14
1 KEYOUT1
KEYOUT2
KEYOUT3
KEYOUT4
Pin # 59 ~ #61
KEYIN5
70
KEYIN4
KEYIN3
LGE Internal Use Only