LG GS290 - SIM & Usd Trouble

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4. TROUBLE SHOOTING
GS290 Operational Description Revision B
LG Electronics 82/136 LGE Property
4.10 SIM & uSD trouble
SIM Check Points
-Power is working
-Socket soldering
-Proper SIM is used
Pin C3 /
SIM_CLK
C7
C1 C3
Check
soldering
all pin of
socket
Pin C1 /
2V9_SIM
Pin C7 / SIM_IO