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Troubleshooting the ARRIS / Motorola SB5100 Cable Modem

Last Updated: Fri, 29 Aug 2014 > Related Articles

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Summary

Learn more about the ARRIS / Motorola SB5100 cable modem.

Solution

 


Installation

 

If you need help setting up your cable modem, refer to the following articles.


The ARRIS / Motorola SB5100 is a DOCSIS 2.0 cable modem. 

 

Front View

 

After the cable modem has successfully registered on the network, the Power, Receive, Send, and Online indicators illuminate continuously to indicate that the cable modem is online and fully operational. For more details, refer to the Modem Lights section.

Back View

 

back

 

The ARRIS / Motorola SB5100 has the following ports available on the back of the modem:

  • Power - Connects the cable modem to the power adapter.
  • CABLE - Connects to the cable wall outlet.
  • USB - Connects to the USB port on your computer.
  • ETHERNET - Connects to the Ethernet port on your computer.

Modem Lights

 

The modem lights indicate the current status of your cable modem. To troubleshoot any connection problems, use the table below.

 

Ethernet or USB Connection - Modem functioning correctly

 

Modem in Standby - Press the standy button to restore back to normal

 

Modem Looking for Cable Connection

Modem LightStatusProblemSolution
PowerOffNo power.Verify power supply connections, the power switch on the modem itself, the electrical outlet, and make sure the outlet is not connected to a switch.
FlashingAn error has occurred during normal operation.Verify all cable connections and try resetting the modem. If cable is OK and modem reset does not work, contact Customer Support.
ReceiveSlow
Flashing
Searching for cable connection.Verify all cable connections and try resetting the modem. If cable is OK and modem reset doesn't work, contact Customer Support.
Fast Flashing ModemSearching for cable connection.If this is a new modem or a replacement modem, contact Cox with the MAC address. If there are several MAC addresses on the modem, use the HFC or RF MAC address. View MAC Address Label.
OffNo connection cable connection.Verify all cable connections and try resetting the modem. If cable is OK and modem reset doesn't work, contact Customer Support.
SendFlashingScanning for the upstream frequency.Verify all cable connections and try resetting the modem. If cable is OK and modem reset doesn't work, contact Customer Support.
OnlineFlashingScanning for the network connection.Verify all cable connections and try resetting the modem. If cable is OK and modem reset doesn't work, contact Customer Support.
ActivityBlinkingNone. Transmitting or receiving data.N/A

MAC Address Label

 

 

MAC addresses are written as 12 digits containing both letters and numbers (0-9, A-F). A MAC address is unique. The first six characters of the MAC address are unique to the manufacturer of the device.

Manufacturer Resources

 

Quick Reference Guide (PDF)


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