
3. TROUBLE SHOOTING
- 114 -
Copyright © 2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
3.5 Power TS
The main power source of D175F is provided by 1 chip which is PM8110 Power ON sequence of D175F is
START
END
Check Battery connector (CN9100)
Press PWR Key R9710(TP1) high to low?
Battery voltage higher than 3.6V?
Check PM8110 Core Voltage level?
Check PM8110 AP Voltage level?
Check PM8110 IO Voltage level?
Check PM8110 RTC CLOCK
Check POWER_KEY S/W
Change or charging the Battery
L4111 (Check PM8110)
L4112 (Check PM8110)
L4114(Check PM8110)
R4107(Check PM8110)
Change PM8110 And Return to
Start
No
No
No
No
No
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes