LG GB115 Service Manual page 43

Checking Flow
Start
Does the SIM Card
supports 2V or 3V ?
Check soling status of J201
and other component
(R201/C203/C204/C205)
Check TP1 = 2.85V ?
Re-download the SW
Check Operation
Change Board
NO
YES
YES
NG
NO
Change the SIM Card . Our
phone supports only 2V or 3V
SIM Card
NG
Resolder J201 or other component
Change Board
43