User's Manual

Chapter 5: Troubleshooting
V0.0 BlueTree Wireless BT4400 & BT5400 Product Manual 33
Chapter 5: Troubleshooting
Modem Help
BlueVue Help
Issue Possible cause Suggestion
Low or no network signal strength.
PWR LED is flashing. The modem does
not communicate with the network.
CD LED is OFF.
Cellular antenna is not properly
connected to the modem.
Check that the antenna cable is
connected properly to the SMA
connector labeled RF on the modem.
No service. Check to see if you are within your
service provider’s coverage area.
Use BlueVue to read the signal strength.
If no signal, then move to an area known
to have a signal.
Check if the phone number (and SID)
are programmed into the modem.
Check your authentication credentials.
Check your password.
PWR LED is OFF No power to the modem. Check to see if the fuse is not blown.
Is the power connector plugged securely
to the modem?
Check the 12 volts supply. Is it
reversed?
Is the ignition sense cable connected:
White to +12 volts.
Are you using the power cable supplied
by BlueTree?
Modem is defective. Contact BlueTree
technical support.
DTR LED is OFF. No software application is using the
COM port.
Check if your application or BlueVue is
running and using the modem’s COM
port.
Serial cable attached to incorrect port. Move your serial cable to the correct
COM port on your computer.
DTR LED is ON but no response from
modem.
TX LED is flashing.
RX LED if OFF.
Serial port data speed is incorrect. Use HyperTerminal or your application
to change the baud rate of the COM
port.
Echo response is OFF or result code is
OFF.
Using HyperTerminal, enter ATE1Q0V1.