Motorola SBV5220 用户手册

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SBV5220 VoIP Cable Modem User Guide
40
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 front-panel lights as described in 
Problem
Possible Solutions
Green POWER light 
is off
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.
No telephone 
service
Check the connection between the SBV5220 and your telephone.
If your telephone requires external power, check the AC power connection for your 
telephone.
Check the coaxial cable on the SBV5220 and the electrical outlet. Hand-tighten the cable 
connectors if necessary.
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.
Cannot send or 
receive data
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 service will not function.
Check the coaxial cable on the SBV5220 and the electrical outlet. Hand-tighten the cable 
connectors if necessary.
Check the IP address. Follow the steps in 
 on page 33. 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.
Problems related to 
unsuccessful USB 
driver installation 
Remove the USB driver. Follow the instructions in one of:
Then perform