Maestro 100 User Manual - Chapter 6: Troubleshooting
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CHAPTER 6: TROUBLESHOOTING
1. The modem’s LED does not light
Check if the modem has been properly connected to a 5 - 32V power
supply Check if the power connector is properly inserted
Check the fuse on the power cord
2.
The modem’s LED lights but does not blink long time
after power up
Check if a valid SIM card has been properly inserted
Check if the SIM card has been locked (refer to AT+CPIN command in AT command
guide)
Check if the external has been properly connected to the
modem Check if the network coverage is available
3. The modem does not respond to the terminal program
Check if the RS232 cable has been properly connected
Check if your program has proper settings. Factory setting of the modem is:
115200 (9600bps for Maestro 100
Eco) 8 data bits
No parity bit
1 stop bit
4.
No voice could be heard for the modem’s speaker
output when a call is answered
Make sure a voice call has been made (refer to AT command guide)
Enter the AR+SPEAKER=1 command