ARRIS CM550 - Manual (Page 32)

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Safety Getting Started Installation USB Drivers Usage Troubleshooting Glossary
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.
Check the front panel lights:
• The Power and Online lights should be on.
• The Link light should be either on or blinking.
• The DS and US lights should be either 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 coax
cable 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.