Sim Detect Trouble - LG KP270 Service Manual

4.5 SIM Detect Trouble

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