LG -E455 Service Manual page 127

Check MT6329 Core Voltage level?
Check MT6329 AP Voltage level?
Check MT6329 IO Voltage level?
Check MT6329 RTC CLOCK
Check Battery connector (CN1602)
LGE Internal Use Only
START
Battery voltage
higher than 3.6V?
Yes
Press PWR Key
TP1: R578 high to low?
Yes
Yes
Yes
Yes
Yes
Yes
END
No
Change or charging the Battery
No
Check POWER_KEY FPCB
No
No
No
No
R334(Check MSM8660)
No
Change MT6329
And Return to Start
- 127 - Copyright © 2013 LG Electronics. Inc. All right reserved.
4. TROUBLE SHOOTING
L300 (Check MT6329)
L301(Check R334)
L302(Check PM8058)
Only for training and service purposes