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Flow Chart of Troubleshooting
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10-5
10-3. SIM Part
"Insert SIM" is displayed on the LCD
The voltage is 3.0V
at the pin#1 SIM300
No
Check U200, C304
Yes
Is there any signal pin
#2,3,4 of SIM300?
Check U200, PMU300
No
Yes
Check the SIM Card
END
0
0
1
C
C102
3
0
1
C
4
0
1
C
6
0
1
C
C108
9
0
1
C
C115
0
2
1
C
1
2
1
C
2
2
1
C
C124
C126
C127
7
1
3
C
8
1
3
C
C425
C432
C435
F1
01
L100
L102
4
0
1L
5
0
1L
L106
7
0
1L
L108
9
0
1L
0
1
1L
L111
2
1
1L
13
9
0
4L
0
1
4L
2
1
4
L
3
1
4
L
0
0
1
M
A
P
R101
R102
R103
8
0
3
R
RFS100
1
0
1
C
S
SC
102
SC
103
SIM
300
1
0
1
U
U407
ZD403ZD404
C318
C317
G
5
6 6
7
7
8
8
9
9
G
13
14
G
G
15
16
1
1
10
10
11 11
12
12
2
2
3
3
4 4
5
SIM300
R308
VDD_SIM_3.0V
SIMIO
SIMCLK
SIMRST