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Flow Chart of Troubleshooting
9-6
9-1-3. Sim Part
"Insert SIM" is displayed on the LCD
Is there any signal pin
#2,3,4 of SIM100?
Check the
U100
Check the
UCP200 & U100
END
No
Yes
No
Yes
1
2
Check the SIM Card
The voltage is 2.8V
at the pin#1 of SIM100
1
2
C134
C132
C135
G
8
G
9
G
G
10
1
1
2
2
3
3
4
4
5 5
6
6
7
SIM100
C136
C133
SIM_IO
SIM_RST
VSIM
SIM_CLK