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