LG LG-K430DSF - 3.8 Power

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3. TROUBLE SHOOTING
3.8 Power
Checking Power signal (Battery connector, Power Key, PMIC Regulator)
Checking Flow
Image
BATTERY CONNECTOR(CN9201)
Core DC/DC INDUCTOR(L4132)
VPROC DC/DC Inductor(L4130)
32K Sleep Clock Out (C4124)
PWR KEY(R4101)
START
Battery voltage
NO
higher than 3.6V?
YES
Press PWR Key
R4101 high to low?
NO
YES
NO
Check MT6328 Core Voltage level?
YES
NO
Check MT6328 IO Voltage level?
YES
NO
Check Sleep Clock level ?
YES
NO
Check Battery connector(CN9201)
YES
Change or charging
the Battery
Check POWER_KEY S/W
L4132
(Check MT6328)
L4130
(Check MT6328)
C4124
(Check MT6328)
Change MT6753
And
Return to Start
END