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Flow Chart of Troubleshooting
10-
6
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10-1-3. Sim Part
There is any signal
pin#2,#3,#4 of SIM103
"Insert SIM" is displayed on the LCD
Check the SIM
connector's (SIM103)
connection to SIM Card
check the UCD102 & UCP201
Resolder or change SIM103
END
No
Yes
Yes
Yes
No
Check the SIM Card
Check the voltage at
SIM103 pin #1
≥
2.8V
Check the UCD102
No
1
2