Arris CM820 Cable Modem

   
Installation:

For installation instructions, refer to the following articles
 

The Arris CM820 is a DOCSIS 2.0 cable modem.

Front View

 
Back View
 
 
Lights
 
 
Light Status Problem Solution
Power Solid None. N/A
Off No Power Verify power supply connections and electrical outlet. Also make sure the outlet is not connected to a wall switch
US Solid Yellow Connected to the Internet (high speed) N/A
Solid green Connected to the Internet (ultra-high speed) N/A
Flashing Not connected to the Internet Verify all cable connections try resetting the modem. Verify there isn't an outage in the area.
Off   Verify power supply connections and electrical outlet. Also make sure the outlet is not connected to a wall switch
DS Solid Yellow Connected to the Internet (high speed) N/A
Solid green Connected to the Internet (ultra-high speed) N/A
Flashing Not connected to the Internet Verify all cable connections try resetting the modem. Verify there isn't an outage in the area.
Off   Verify power supply connections and electrical outlet. Also make sure the outlet is not connected to a wall switch
Online Solid Internet Available N/A
Flashing DS and US found, retriving setup info form cable opeator Verify all cable connections try resetting the modem. Verify there isn't an outage in the area.
Off No Internet Available Verify all cable connections try resetting the modem. Verify there isn't an outage in the area.
Link Solid Yellow 10/100 BaseT Ethernet connected N/A
Solid green 1000 BaseT Ethernet connected N/A
Flashing Computer Activity N/A
Off No ethernet connetion found Verify all cable connections try resetting the modem.
 
 
Manufacturer Resources