Sim Card Interface Trouble - LG KG320 Service Manual

4.9 SIM Card Interface Trouble

TEST POINT
CIRCUIT DIAGRAM
SIM CONNECTOR
2V85_VSIM
SIM_DATA
Figure 4-9
R201
J201
20K
4 1
GND VCC
5 2
VPP RST
6 3
I_O CLK
8 7
GND2 GND1
C202
NA
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4. TROUBLE SHOOTING
2V85_VSIM
C201 C203 C204
22p 1000p
220n
SIM_RST (GPIO 23)
SIM_CLK