Keypad Trouble - LG AT&T GR500 Service Manual

4.5 Keypad Trouble

Key PCB has SEND/END key and Multi key. There are another keys – cam/hold key,
and volume up/down key except for QWERTY key
Check connetors(70pins, 40pins)
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Only for training and service purposes
START
Press Key button
Key button works well?
No
Change Key dome sheet
Key button works well?
No
Key button works well?
No
Change Key PCB
Key PCB CNT
Yes
Finish
Yes
Finish
Yes
Finish
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4. TROUBLE SHOOTING
LGE Internal Use Only