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10-1-3. SIM Part
① Flow chart of SIM Part
"Please insert SIM card"
Check the CN400's
Connection to SIM
Check the voltage
at CN400 pin #11 ≒ 3.
There is any signal
pin#13,#15,#16 of
Check the SIM Card
card
YES
0
YES
CN400
YES
END
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NO
Resolder or change CN400
NO
NO
Check the U400 & UCP300
** Check SIM's signal
when you see SIM checking display
10-5
Flow Chart of Troubleshooting
Check the U400
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