LG KF750 Service Manual page 128

start start
Check the pin and battery Check the pin and battery
1
connect terminals of I/O connect terminals of I/O
1
connector connector
Connection OK? Connection OK?
2
Is the TA voltage 5.1V?
2
Is it charging properly Is it charging properly
3
3
after changing Q500?
Change the board Change the board
Trouble Shooting - Charging
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NO NO
YES YES
NO NO
YES YES
YES
NO NO
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4. TROUBLE SHOOTING
Change I/O connector Change I/O connector
Change TA Change TA
END END
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