Troubleshooting
If the solutions listed here do not solve your problem, contact your cable provider. Before calling your service provider, try pressing the reset button on the rear panel or unplugging and plugging in the VoIP cable modem power cord. Resetting the VoIP cable modem may take 5 to 30 minutes. Your service provider may ask for the status of the
Problem | Possible Solutions |
Green POWER light is off
No telephone service
Cannot send or receive data
Problems related to unsuccessful USB driver installation
•Check that the power cord is properly plugged into the electrical outlet and the VoIP cable modem.
•Check that the electrical outlet is working.
•If the Standby light is on, the Internet connection is off. Press the Standby button to reconnect to the Internet.
•Check the connection between the SBV5121 and your telephone.
•If your telephone requires external power, check the AC power connection for your telephone.
•Check the coaxial cable on the SBV5121 and the electrical outlet.
•Check the lights on the front panel. Make sure the green power light is on. If it is not, check that the power cord is properly plugged into the electrical outlet and the VoIP cable modem.
•If you have cable TV, check that your TV is working and the picture is clear. If you cannot receive your regular TV channels, your telephone service will not function.
•Check the lights on the front panel. Note the first light from top to bottom that is off. This light indicates where the error occurred, as described in
•If all lights are off except the Standby and Tel 1/Tel 2 lights, the VoIP cable modem is in Standby mode. Press the Standby button to reconnect your Internet service. The Standby button does not affect the Tel 1/Tel 2 LEDs.
•If you have cable TV, check that your TV is working and the picture is clear. If you cannot receive your regular TV channels, your data and telephone service will not function.
•Check the coaxial cable on the SBV5121 and the electrical outlet.
•Check the IP address. Follow the steps in “Verifying the IP Address in Windows 98 Second Edition, or Windows Me” on page 30 or “Verifying the IP Address in Windows 2000 or Windows XP” on page 31. Call your cable provider if you need an IP address.
•Check that the USB or Ethernet cable is properly connected to the VoIP cable modem and your computer.
Remove the USB driver. Follow the instructions in one of:
•“Removing the USB Driver from Windows 98 Second Edition or Windows Me” on page 37
•“Removing the USB Driver from Windows 2000” on page 38
•“Removing the USB Driver from Windows XP” on page 40
Then perform “Running the Motorola USB Driver Removal Utility” on page 43.
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