LG KE520 Service Manual page 70

START
I/O Connector (CN300)
Is well-soldered?
YES
Check the FB302,FB303,
Is it OK?
YES
Voltage at pin 5 of U101
Is LOW in case charging ?
YES
Battery is OK?
YES
Charging is operating properly
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Only for training and service purposes
4. TROUBLE SHOOTING
Re-solder the CN300
(Pin 12,13)
NO
Re-solder the FB302, FB303
NO
The IC is out of order.
Replace the IC
NO
The Battery may have Problem.
Change Battery
NO
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