Sim Card Trouble - LG KG270 Service Manual

4. TROUBLE SHOOTING

4.4. SIM Card Trouble

TEST POINT
CIRCUIT DIAGRAM
SIM_DATA
R302/C310
C331/C332
2V85_VSIM
2V85_VSIM
J300
4
GND VCC
5
VPP RST
6
I_O CLK
8
GND2 GND1
C310
22p
- 56 -
J300.PIN1
2V85_VSIM
1
2
SIM_RST
3
SIM_CLK
7
C311
C312
0.1u
22p