LG KF510C Service Manual page 94

START
Check All o f LEDs sold er
Check TP1
CN200 13Pin is
High? Check TP2
Yes
CN700 20Pinis
High? Check TP3
Yes Ye
Replac e KEY FPCB
Assemble
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Only for training and service purposes
Check CN200
No
replace Board
Replace 20pin conn.
No
(CN700)
TP3
CN700
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5. Trouble shooting
TP1
TP2
CN20 0
CN500
CN50 1
LGE Internal Use Only