Sim Part - Samsung S7330 Service Manual

Flow Chart of Troubleshooting

10-1-3. Sim Part

"Insert SIM is displayed on the LCD
Yes
No
Check the SIM connector's
(SIM400) connection to
Resolder or change SIM400
SIM card
Yes
No
Check the voltage at pin#1
Check the U400
of SIM400 >= 3.0V ?
Yes
No
Is there any signals
Check the U400
pin#2,#3,#4 of SIM400 ?
Yes
Check the SIM Card
END
10-6
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