Quick Start - Contentful

Quick Start
Cable Modem
Packaged with your modem
Power Cube
Coax Wrench
Ethernet Cable
Velcro® Cable Tie
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Let’s get started
If you don’t have cable modem service, please order
that from your cable service provider.
Now connect your modem as shown on the next
Connecting to a Coax Cable
On the next panel you’ll need to connect your
modem to a “live” coax cable. Sometimes a cable
will already be available. Sometimes there’s a
coax wall jack available, and you connect to the
jack with a coax cable. Your modem can also
share a coax cable attached to a TV by using a
coax splitter.
ON/OFF button
Connect the
supplied power cube
between the power
jack and an electrical
RESET button
Here you can
connect a computer,
router, HDTV, game
station, or other
Connect a “live” coax
cable to the modem’s
COAX connector as
discussed above.
(Tighten the nut so it’s
finger tight. You may
want to use the supplied
wrench. Make the
connection snug but not
Prepare to activate
By now you should have:
• Subscribed to cable Internet service.
• Connected your cable modem.
• Powered up your cable modem. To do this, the
On/Off button needs to be On. Wait for the green
to stop flashing and remain
online connection light
solidly lit. This may take up to 15 minutes.
You should have a recent cable bill handy because it
has your account number and you’ll probably need
If you’re asked for information about your cable
modem, you can find this on the label on the bottom of
the modem.
For some service providers, you activate by calling
them. Many service providers including Comcast and
Cox prefer that you activate by opening the Web
browser of a computer that’s plugged into the
MB7420’s Ethernet port.
For Comcast XFINITY Users Only:
If the activation page does not appear in your browser,
please go to www.xfinity.com/internetsetup for more
information and to activate your modem.
If no registration page appears after following the
browser instructions above, you need to contact
your cable company to register your modem. Here is
a list of phone numbers for some major cable service
providers. (Note that this list is subject to change.)
Time Warner
Bright House
Cable One
1 (855) 652-3446
1 (855) 704 4503
1 (888) 289-8988
1 (877) 794-2724
1 (877) 692 2253
1 (888) 556-1193
1 (866) 832-4726
Once your cable modem is registered either online
or by phone, your service provider will provision
your cable modem service. Typically this takes less
than 5 minutes, but in some cases this may take 30
minutes or longer to complete.
Once you have activated, you should have Internet
access for whatever’s plugged into your cable
modem. Congratulations!
If your cable modem is NOT working, see
Troubleshooting Tips below.
If You Want To Connect a Router
This connection is optional, done after the cable
modem is activated. A wireless router lets multiple
devices (computers, smartphones, tablets, video
devices, game stations…) share your cable
modem’s Internet connection, either wirelessly or
through a direct Ethernet connection.
1. The cable modem and the router should both be
powered off.
Plug the cable modem’s Ethernet cable into the
router’s WAN port. (You may need to
disconnect the cable from your computer first.)
Power-up the cable modem. Wait for the
to be solidly lit.
ONLINE light
Power-up the router. Wait for the router to
complete its power-up sequence.
on your modem should be lit
The LAN light
to show the Ethernet connection to your router.
Follow your router’s instructions for setting up
the router and connected devices.
Using a computer or other device connected to the
router, try connecting to the Internet. If it works,
Congratulations! Installation is complete.
Front Panel Lights
LAN port
Blinking: Ethernet data is flowing
Green: Connected at highest LAN
speed, 1 Gbps
Amber: Connected at 10 or 100 Mbps
No connection
Blinking: Trying to go online
Green Blinking: Ranging in progress
Connected on 1 channel
Green ON:
Blue Blinking: Negotiating bonded
Bonded with 2 or
Blue ON:
more channels
Upstream not connected
Green Blinking: Scanning for DS channel
Connected on
Green ON:
1 downstream channel
Blue Blinking: Negotiating
bonded channel(s)
Bonded with 2 or more
Blue ON:
ON: Cable modem power on
OFF: Cable modem power off
If a blue light blinks continuously, this indicates partial service (at
least one designated channel has not completed bonding). You
should still get high Internet speeds, but your service provider
may want to know so they can adjust their network.
Troubleshooting Tips
What if I can’t make an Internet connection right after
First turn your cable modem off for at least 8 seconds,
then on, to see if that fixes the problem.
Check the connections you’ve made to your cable
modem – power, Ethernet, and coax. Are those
connections good?
Check that the modem’s power cube is plugged into a
live outlet, and that the Ethernet cable is connected
Make sure that your coax cable is live. You can check that
by using it with a TV.
Check that you provided the correct setup information to
your cable service provider.
Contact your cable service provider to make sure they’ve
turned on your Internet service.
What if my cable modem has been working, then stops
First turn your cable modem off for at least 8 seconds,
then on, to see if that fixes the problem.
If the modem’s lights don’t come on, check that the
modem is getting power from its power cube and that
the modem’s power button is on.
Check your cable modem cables.
Check with your service provider. Sometimes there’s a
service outage or some other service issue.
What if I’m getting Internet service but my speed is
Be sure you know what speed you’re paying for.
Check the speed with a computer plugged into the
modem. Use one of the tools found when you search the
phrase: broadband speed test.
If you get good speed when a computer’s plugged into
the modem, you may have a router problem.
Some video streaming services get bottlenecked,
especially at busy times like after dinner. See whether you
have the speed problem at less busy times.
Try connecting your cable modem nearer to where the
coaxial cable comes into your home. This lets you see
whether your home’s cabling is a problem.
If you’re using a splitter with your cable modem, try the
cable modem without the splitter to see if that helps. If it
does, you may need to get a better splitter.
What if I'm told that my cable modem isn't approved for
my cable modem service?
That’s probably not true. Leading cable service providers
have a list of certified cable modems, and you can check
the list for your service provider. You can also find
information about certifications at
Do you have any other questions? We have lots more
information at www.motorolacable.com/mentor
We like to help.
Please visit our support Website or call our support
specialists. Our Website has our Motorola Mentor
information, and also provides returns and warranty
Email: support@motorolacable.com
Phone: 800-753-0797
Limited Warranty
MTRLC LLC warrants this product against defects in
material and workmanship for a warranty period of 2
years. To read the full warranty, please go to
Safety Precautions
These precautions help protect you and your cable modem.
ƒ Do not put the cable modem or its power cube in water, since this is
a shock hazard.
ƒ The cable modem should normally be installed indoors. If you use it
outdoors, protect it from moisture and be careful about
ƒ Your cable modem should be operated in an environment that’s
between 32 and 104° Fahrenheit (0 to 40° Centigrade).
ƒ Your cable modem should not be in a confined space. There should
be room for air flow around the top, front, and sides of the cable
ƒ Make sure to use your cable modem’s power cube and a compatible
electrical outlet.
FCC Statement
This device complies with Class B Part 15 of the FCC Rules. Operation is
subject to the following two conditions: (1) this device may not cause harmful
interference, and (2) this device must accept any interference received,
including interference that may cause undesired operation. Only coaxial
cables are to be used with this device in order to ensure compliance with FCC
emissions limits. Accessories connected to this device by the user must
comply with FCC Class B limits. The manufacturer is not responsible for any
interference which results from use of improper cables, or which results from
unauthorized changes or modifications to the device.
©MTRLC 2015. MOTOROLA and the Stylized M Logo are trademarks or
registered trademarks of Motorola Trademark Holdings, LLC. and are used
under license. All rights reserved.
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