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Flow Chart of Troubleshooting
9-4. Sim Part
Phone can't access SIM Card
Yes
①
No
Check the SIMVCC = 3.0V
Check the circuit related to
R316, C172
Yes
②
No
Check the SIM connector's
resolder or change
CD100
connector's to SIM card
Yes
③
No
Check the circuit around CD100
Check the related circuit of
CD100
input circuitry
Yes
END
9-7
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