Samsung GT-S5230 - Sim Part

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