LG -E455 Service Manual page 132

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