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4 . TROUBLE SHOOTING
4.8 SIM Card Interface Trouble
TEST POINT
CIRCUIT DIAGRAM
S
M I
_
D
A
T
A
3
0 1
4 1
0 2
V
L
C
S
0
0 5
S
M I
2
V
8
_ 5
V
S
M I
R
3
6 3
0 2
K
R
3
7 3
A
0
C
3
4 1
N
A
C
O
N
N
E
C
T
O
R
2
V
8
_ 5
V
3 J
0 0
4
1
G
N
D
1
V
C
C
5
2
V
P
P
R
S
T
6
3
O I
C
L
K
0 1
7
G
N
D
5
G
N
D
2
9
8
G
N
D
4
G
N
D
3
- 72 -
S
M I
R
3
8 3
0
C
3
5 1
C
3
6 1
C
3
7 1
0 1
0 0
p
N
A
2
0 2
n
S
M I
_
R
S
T
S
M I
_
C
L
K
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