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 installation?
First turn your MG7540 off for at least 8 seconds, then on, to see if that fixes the problem.
Check the connections you’ve made to your MG7540. Power and coax connections are required,
and up to 4 Ethernet connections are optional. Are those connections good?
Check that the MG7540’s power cube is plugged into a live outlet, and that the Ethernet cable is
connected securely to a computer.
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 MG7540 has been working, then stops working?
First turn your MG7540 off for at least 8 seconds, then on, to see if that fixes the problem.
If the MG7540’s lights don’t come on, check that the modem is getting power from its power cube
and that the MG7540’s power button is on.
Check your MG7540 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 disappointing?
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 wireless
problem. In that case, please re-read the wireless router section.
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 MG7540 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 MG7540, try the MG7540 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 MG7540 isn’t approved by my cable service provider?
That’s probably not true. Leading cable service providers have a list of certified cable modems for
each of their Internet speeds. You can check the list for your service provider. You can also find
information about certifications at www.motorolacable.com/services
What if I am connected wirelessly but my connection seems slow or keeps dropping?
Please re-read the Wireless Router section above.
What if I don’t know my MG7540’s Wireless Network Name/SSID or Security Key/Password?
The default values are printed on the bottom label of the MG7540. Use these unless you changed
them. If you changed them, try to remember where you put the new values. If you have a device that
connects wirelessly to the MG7540, it may show the Wireless Network Name/SSID and Password. You
can also find this information in the MG7540 Configuration Manager. Information about using this is in
the Configuration Manager section above.
If all else fails, reset the device to factory defaults by holding the Reset button for 10 seconds. You can
then use the default values.
What if I think that wireless devices are interfering with my MG7540 wireless router?
1. Where possible, put the MG7540 as far away as possible from interfering devices such as
Bluetooth transmitters and neighbors’ Wi-Fi routers.
2. To try to pick a less used wireless channel for your MG7540, first go in to your MG7540’s
Configuration Manager.
3. Click the Advanced button at the top of the page, then click the Wireless and Scan/Bridge menu
items at the top of the page.
4. Click the ScanWirelessAPs button. A list will appear of competing wireless networks, including the
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