Chapter 5
Troubleshooting
5.1 The modem’s LED does not light
–
Check the command AT+CGMR, if firmware is R3A its a known issue. Modem works properly,
except LED when modem is not activated on the carrier network.
–
Check if the modem has been properly connected to a 9-60V power supply.
–
Check if the power connector is properly inserted.
–
Check the fuse on the power cord.
5.2 The modem’s LED lights but does not blink long time after
power up
–
Check if the CDMA antenna has the right characteristics & that the antenna is correctly connected
to the modem.
–
Check if the network coverage is available.
–
For GENERIC version, make sure the valid PRL is loaded in the modem and the modem has the
right provisioning.
–
For VERIZON, SPRINT and AERIS version, make sure an account is set up with the carriers and
the first activation done.
5.3 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:
•
baudrate at 115200 bps
•
8 data bits
•
no parity bit
•
1 stop bit
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