LG KF350 Service Manual page 81

4. TROUBLE SHOOTING
Check All of LEDs solder
LGE Internal Use Only
START
Check TP1 is
2.62V?
Yes
44pin connector
(CN303) is good?
Yes
Replace KEY FPCB
Assemble
No Check U202 of main
board
No Replace 44pin
conn.
(CN101)
TP
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CN101
Only for training and service purposes