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SGH-D730 Flow Chart of Troubleshooting and Circuit Diagrams
2-
10
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2-1-3. Sim Part
Check the SIM
connector's
(CN500)
connector's to SIM
card
Check the circuit related to
U500
NO
resolder or change
CN500
NO
Check the related circuit of
CN500
NO
YES
YES
YES
Phone can't access
SIM card
Check the circuit around
U500 output
and voltage supply circuitry
END
YES
Check the pin 3 of
CN500
Voltage = 3V
Check the circuit around CN500
input circuitry
Check the related circuit of
U500
NO
①
②
③
④
① ④
② ③
