Sim Card Interface Trouble - LG KG225 Service Manual

4.10 SIM Card Interface Trouble

TEST POINT
CIRCUIT DIAGRAM
R126
SIM_DATA
Figure 19
2V85_VSIM
SIM CONNECTOR
R120
20K 4
GND1
5
VPP
0
6
IO
10
GND5
9
GND4
C133
NA
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4. TROUBLE SHOOTING
J100
J100.1
(C128)
2V85_VSIM
J100
1
VCC
2
RST
3
CLK
7
GND2
8
GND3
C128 C134
220n 22p
SIM_RST
SIM_CLK
C135
1000p