LG GD510 - Safety, Accessories, and Data; Included Accessories and Technical Data

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Only for training and service purposes
5. Trouble shooting
GD510 Operational Description Revision A
LG Electronics 61/116 LGE Property
START
“PWRON” signal
Check ‘TP3 of Q1
“_RESET” signal
Check 5 pin of U203
Check the all LDO’s
output
Is it correct?
Is the 26MHz
clock From X601
signal correct?
Replace main PCB
Check the
RPWRON,
Replace Q1
Check solder
U203or replace it
Check solder
U300 or replace it
Check solder
X601
or replace it
Check 3 pin of
X601
Or Check 11 pin
of U602
Yes
Yes
Yes
Yes
Yes
No
No
No
No
Change Battery
or
Check Battery
connector
Battery Voltage,
Higher than 3.35V ?
No
Yes
Check 44Pin (CN502) Connector
Combination then Power ON
U203
U300
1pin of X601
U602
14pin of U601
X600
C3 Q1