CM550 Cable Modem User’s Guide
Troubleshooting
Problems and Solutions
The cable modem is plugged in, but the Power light is off.
Check all power connections. Is the AC adapter plugged in firmly at both
ends?
If you plugged the AC adapter into a power strip, make sure the strip is
switched on.
Avoid using an outlet controlled by a wall switch, if possible.
Finally, check the fuse or circuit breaker panel.
I’m not getting on the Internet.
It may take up to 30 minutes to establish a connection the first time you
power up your Cable Modem, especially when a lot of people are online.
Always leave your Cable Modem plugged in and connected; use the
Standby
button to disconnect your PC from the Internet.
Check the front panel lights:
•
The
Power
and
Online
lights should be on.
•
The
Cable
light should be either on or blinking.
•
One of the
USB
or
Ethernet
lights should be on or blinking.
•
If the
Power
light blinks for more than 30 minutes, call your cable
company for assistance.
Check your cable connections. Connectors should be finger-tight. The
should not be pinched, kinked, or bent sharply—any of these can
cause a break or short in the cable (you may have to replace the cable). If
you have one or more splitters between the Cable Modem and CATV outlet,
remove the splitters and connect the Cable Modem directly to the outlet.
Proceed to the Ethernet or USB solutions (next page) if necessary.
