Motorola SURFboard SB6121 Troubleshooting guide

SURFboard®SB6121

DOCSIS®3.0 Cable Modem

Quick Startup Guide

Please visit www.motorola.com/us/support for FAQs and additional product documentation.

BEFORE RETURNING THIS PRODUCT TO THE STORE for any reason, please call Motorola Broadband Technical Support:

1-877-466-8646

IMPORTANT

1. Power ON your computer. Check that the Receive, Send, and

Online LEDs on your modem turn ON (not ﬂashing). See next

page for more LED information.

Note: If all three LEDs did not turn ON, contact your service

provider.

2. Open a web browser of your choice, such as Internet Explorer,

Firefox, or Google Chrome.

3. Type any valid URL (for example, www.motorola.com) in the

address bar to test your network connection.

- If the web page opens, your modem was set up properly.

- If the web page does not open, you may have to contact your

current service provider to set up your Internet service or

activate your modem.

Please contact your service provider, if you do not already have

a cable service installed or you do not currently subscribe to a

high-speed cable service.

You may need to provide your modem’s MAC address and

serial number (see next page for details).

Before starting, make sure your cable service is up and running,

and that the coaxial cable is already connected to your home’s

cable outlet. If not, contact your service provider.

1Connect the other end of the coaxial cable to the Cable

connector on the rear panel of your modem.

2Plug in the power cord to an electrical outlet and to the Power

port on the rear panel of your modem. This will automatically

power ON your modem.

3 Connect the Ethernet cable to the Ethernet port on your

computer (or other device) and to the Ethernet port on the rear

panel of your modem.

ConnectingYour Modem

(see connection diagram)

Items Included in the Box

• SB6121 Cable Modem

• Power Supply

• Ethernet Cable

• Software License & Warranty Card

• Quick Startup Guide

StartingYour Modem

MOTOROLA and the Stylized M Logo are trademarks or registered trademarks of Motorola Trademark Holdings, LLC. SURFboard is a registered trademark of Motorola Mobility, Inc. All other product or service

names are the property of their respective owners. No part of the contents of this document may be reproduced or transmitted in any form or by any means without the written permission of the publisher.

582928-001-b 08/2011

SURFboard®SB6121

DOCSIS®3.0 Cable Modem

Front Panel LEDs

ICON LED STATUS

Green (ON): Indicates power to the modem is properly connected

Green (ON): Indicates a downstream (receive data) channel

connection

Blue* (ON): Indicates a bonded downstream (receive data) channel

connection

Green (ON): Indicates an upstream (send data) channel connection

Blue* (ON): Indicates a bonded upstream (send data) channel

connection

Green (ON): Indicates Internet connectivity

Amber (ON): Indicates a device, computer, or router is connected

to the Ethernet port and is operating in Ethernet (10Base-T) or Fast

Ethernet (100Base-T) mode

Blue* (ON): Indicates a device, computer, or router is connected to

the Ethernet port and is operating in high-speed Gigabit Ethernet

(1000Base-T) mode

*High-speed data service may not be available in your location. Check with your

service provider for more information.

Modem Label

During normal operation, the

POWER, RECEIVE, SEND, and

ONLINE LEDs should always

be ON. The LINK LED should

FLASH during data transfer.

Note: During startup, all LEDs

will FLASH and then turn ON

in sequence. If an LED turns

ON and the next LED does not

FLASH, please contact your

service provider.

Please note: The SB6121 modem

label is located on the bottom of

your modem. It contains speciﬁc

ID information for your modem.

To receive cable service, your

service provider may request

the Media Access Control (MAC)

address (see HFC MAC ID) and

serial number (see S/N) located

on the modem label.

Product Operation

Quick Startup Guide

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