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Flow Chart of Troubleshooting
3-1-3. Sim Part
"Insert SIM is displayed on the LCD
connector's (SIM100)
connection to SIM card
Check the voltage at
pin#1 of SIM100 >=
Is there any signals
pin#2,#3,#4 of ?
Check the SIM Card
Yes
Check the SIM
Yes
2.8V ?
Yes
Yes
END
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①
No
Resolder or change
②
No
Check the
U100
③
No
Check the
UCP201
SIM102
1
1
2
2
3
3
G
10
3-6
SIM100
6 6
5
5
4 4
G
G
G
9
8
7
C139
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Table of Contents
Troubleshooting
