User Guide

Flow Chart of Troubleshooting
3-5
3-1-3. Sim Part
"Insert SIM" is displayed on the LCD
Is there any signal pin
#2,3 of SIM103?
Check the UCP101
Check the UCP101 & UCP201
END
No
Yes
No
Yes
1
2
Check the SIM Card
The voltage is 2.8V
at the pin#1 of SIM103
1
2
2
C103 C105 C107C104
GG
89
GG
10
11
22
33
4
4
5
5
6
6
7
SIM103
R100
C106
SIM_IO
VSIM
SIM_RST
SIM_CLK