Flow Chart of Troubleshooting and Circuit Diagrams
10-1-3. SIM Part
"Please insert SIM card "
Check the SIM701's
NO
Solder SIM701 again or change
Connection to SIM card
SIM701
YES
Check the voltage
NO
Check the UCD701
at SIM701 pin #1 ≒ 2.8
YES
Check the SIM Card
END
** Check SIM's signal
when you see SIM checking display
10-6
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