LG -E445 Service Manual page 122

Is the uUSB Cable voltage 4.9V (or 5.0V)
Is it charging properly After turning on?
Change the Charger IC ( U601 )
LGE Internal Use Only
START
Check the Connection
of uUSB and battery
Connection OK?
Yes
Yes
No
Change the Main PCB
No
Change I/O connector
No
Change TA (or uUSB Cable)
Yes
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4. TROUBLE SHOOTING
END
Only for training and service purposes