LG KP330 Service Manual page 118

4.16.1 TROUBLE SHOOTING FLOW
Check the pin and battery connector
Terminals of I/O connector
Is it charging properly
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Connection OK?
YES
Is the TA voltage
5.1?
YES
NO
Change the board
4. Trouble Shooting
NO
Change I/O connector
NO
Change the board
YES
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4. TROUBLE SHOOTING
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