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SGH-E105 Flow Chart of Troubleshooting and Circuit Diagrams
4-
3
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3. Sim Part
Check the SIM
connector's (CN100)
connector's to SIM card
Check the circuit related to
U100
NO
resolder or change CN100
NO
Check the related circuit of
CN100
NO
YES
YES
YES
Phone can't access SIM card
Check the circuit around U601 output
and voltage supply circuitry
END
YES
Check the pin 1 of CN100.
Voltage = 3V?
Check the circuit around CN100 input
circuitry
Check the related circuit of
U601 and U100
NO