Your friend in the digital age
Skip To Menu
Skip To Content
You are here: Residential Home > Support > Internet Support > Equipment Setup > Troubleshooting the Motorola SB6120 Cable Modem

Internet

The Internet should add convenience, not headaches. From step-by-step instructions to helpful tips, we'll help you install your equipment, troubleshoot problems, and get the most out of your online experience – minus the migraine.

Back Print Article

Troubleshooting the Motorola SB6120 Cable Modem

Last Updated: Tue, 04 Sep 2012 > Related Articles

24 rated this

Summary

Learn about the available ports and the status lights on a Motorola SB 6120 cable modem.

Solution


Installation

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


The Motorola SB6120 is a DOCSIS 3.0 cable modem. If this modem is used with the Ultimate Internet, only available in limited markets, and a Microsoft operating system other than Vista or Windows 7, the registry keys must be updated to enable maximum speed performance.

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

The Motorola SB6120 has the following ports available on the back of the modem:

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

Modem Lights

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

Modem LightStatusProblemSolution
POWERSolid GreenNone. Power is properly connected.N/A
OffNo powerVerify power supply connections and electrical outlet. Also make sure the outlet is not connected to a switch.
RECEIVE

Solid Green

Solid Blue

None. Downstream channel is connected.

None. Downstream channel is connected with bonded channels.

N/A
FlashingSearching for a downstream channel connectionVerify all cable connections and try resetting the modem. If cable is OK and modem reset does not work, contact Customer Support.
OffModem is off-line.Verify all cable connections and try resetting the modem. If cable is OK and modem reset does not work, contact Customer Support.
SEND

Solid Green

Solid Blue

None. Upstream channel is connected.

None. Upstream channel is connected with bonded channels.

N/A
FlashingModem is registering with headend. Searching for an upstream channel connection.Verify all cable connections and try resetting the modem. If cable is OK and modem reset does not work,  contact Customer Support.
OffModem is off-line.Verify all cable connections and try resetting the modem. If cable is OK and modem reset does not work, contact Customer Support.
ONLINESolid GreenNone. Connected to the Internet.N/A
FlashingNone. Scanning for configuration parameters.N/A
OffNo connection.Verify all cable connections and try resetting the modem. If cable is OK and modem reset does not work,  contact Customer Support.
LINK

Solid Amber


Solid Blue

None. A single device is connected to the Ethernet port and no data is being sent to or from the modem.

None. A High-speed Gigabit Ethernet connection from the cable modem to the PC.

N/A
FlashingNone. A single device is connected to the Ethernet port and data is being transferred between the PC and the cable modem.N/A
OffNo devices connected.Verify all cable connections and try resetting the modem. If cable is OK and modem reset does not work, contact Customer Support.

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


Rate this Article:

Related Topics:

Equipment Setup

Give us your feedback:

Feedback

Maximum 500 characters

Back Print Article

Need more help?

Suggested Internet Topics