Flow Chart of Troubleshooting
9-
6
9-1-3. Sim Part
Phone can't access
SIM card
①
Check the pin 1 of
SIM300
Voltage = 3V
NO
Check the circuit related to
U300
YES
Check the SIM
connector's
(SIM300)
connector's to SIM
card
②
resolder or change
SIM300
NO
③
YES
Check the circuit around SIM300
input circuitry
NO
Check the related circuit of
SIM300
④
YES
NO
Check the related circuit of
U300
Check the circuit around
U300 output
and voltage supply circuitry
YES
END
Summary of Contents for SGH-X810
Page 54: ...PCB Diagrams 8 4 ...
Page 56: ...Flow Chart of Troubleshooting 9 2 ...
Page 67: ...Flow Chart of Troubleshooting 9 13 ...
Page 76: ...Flow Chart of Troubleshooting 9 22 ...
Page 80: ...Flow Chart of Troubleshooting 9 26 ...