LG KG271 - 4.4 SIM Card Trouble

4. TROUBLE SHOOTING
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4.4. SIM Card Trouble
C331/C332
J300.PIN1
R302/C310
TEST POINT
CIRCUIT DIAGRAM
C311
0.1u
4.7KR302
C310
22p
22p
C312
2V85_VSIM
2V85_VSIM
0
R303
I_O
6
2
RST
1
VCC
VPP
5
J300
CLK
3
4
GND
GND1
78
GND2
2V85_VSIM
SIM_CLK
SIM_RST
SIM_DATA