LG KM710 Service Manual page 62

START
I/O Connector (CN300,Main)
Is well-soldered?
YES
Check the FB304,FB305(Main),
Is it OK?
YES
Voltage at pin 1,2 of U101(Main)
YES
Voltage at pin 5 of U101(Main)
Is LOW in case charging ?
YES
Battery is OK?
YES
Charging is operating properly
CN300
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=4.8?
Re-solder the CN300
(Pin 12,13)
NO
Re-solder the FB304, FB305(Main)
NO
Replace the U101(Main)
NO
The IC out of order.
Replace the IC
NO
The Battery may have Problem.
Change Battery
NO
U101
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4. Trouble Shooting
LGE Internal Use Only