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Flow Chart of Troubleshooting
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3-8
3-1-3. Sim Part
Check the SIM connector's
(CD201)connection to SIM card?
Resolder or change CD201
"Insert SIM" is displayed on the LCD
END
Check the SIM Card
YES
NO
NO
YES
Check the voltage at Pin
#11 of CN201 >=2.8V
Check the UCP 201
IS there any signals Pin
#13,#15,#16
NO
Check the UCP 201
YES
YES