4. TROUBLE SHOOTING
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Copyright © 2013 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
START
Check the Connection
of uUSB and battery
Change the Charger IC ( U402 )
Is the uUSB Cable voltage 4.9V (or 5.0V)
Yes
Connection OK?
Connection OK?
Is it charging properly
After turning on?
Yes
Yes
Yes
Change I/O connector
No
Change TA
(or uUSB Cable)
END
END
No
No
No
Change the Main PCB