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3. SIM Part
"Please insert SIM card "
at pin #1 of CN501
Check the CN501's
Connection to SIM card
Check the circuit around
U400 and data stored in it
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SGH-Z130 Flow Chart of Troubleshooting and Circuit Diagrams
Check the voltage
2.85V ?
≒
YES
YES
END
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NO
NO
2- 5
Check the circuit related
to CN501
Resolder CN501
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