LG D690 - Page 83

3. TROUBLE SHOOTING
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START
Battery voltage
Higher than 3.5V?
Press PWR Key
TP1 : R4103 high to low?
CLOCK CHECK1 (TP2 : X1200)?
SYS_RESET_IN(TP3 : C2100) high?
Check MT6323’s VREG level?
Change or charging the Battery
Check Key(CN9201)
X1200 PIN CHECK
Check C2100
Check U4100(MT6323)
No
No
No
No
No
Yes
Yes
Yes
Yes
Yes
Check Battery connector
(CN9100)