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Flow Chart of Troubleshooting
10-1-3. Sim Part
"Insert SIM is displayed on the LCD
Yes
No
Check the SIM connector's
(SIM600) connection to
Resolder or change
SIM600
SIM card
Yes
No
Check the voltage at pin#1
Check the
UCD300
of SIM600 >= 2.8V ?
Yes
No
Is there any signals
Check the
UCD300
pin#2,#3,#4 of SIM600 ?
Yes
Check the SIM Card
END
10-5
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