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4. TROUBLE SHOOTING
LGE Internal Use Only
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
4.5 SIM Detect Trouble
Check soldering of
J301
2V9_VSIM(C236) is 3.0V?
Click TP1
SIM_CLK(C324),
SIM_DATA(C323) is
Work well? Click TP2
Start
Resolder J301
Check C236 or
Change U202
END
YES
NO
NO
NO
YES
YES
Change SIM Card.
Work well?
END
YES
NO
Change the main board
Check soldering of
J301
2V9_VSIM(C236) is 3.0V?
Click TP1
SIM_CLK(C324),
SIM_DATA(C323) is
Work well? Click TP2
Start
Resolder J301
Check C236 or
Change U202
END
Change SIM Card.
Work well?
END
Change the main board