TECHNICAL SUPPORT
Cable Modem: Linksys BEFCMU210v3 Troubleshooting
► Summary
Troubleshooting
Manufacture Resources
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Cable Modem User Manuals
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Cable Modem Data Manuals
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► Troubleshoot Modem Lights
"Ethernet" light on
"Activity" light flashing
"USB" light on
"Activity" light flashing
"Cable" light flashing or off
► Troubleshooting Diagram:
Modem
Status
Problem
Solution
Light
Power
Solid
None
N/A
Green
Off
No Power
Verify power supply connections and
electrical outlet. Also make sure the outlet
is not connected to a switch.
Cable
Slow
Searching for cable
Verify all cable connections and try
Flashing
connection
resetting the Modem.
Green
Fast
Searching for cable
If this is a new Modem or a replacement
Flash
connection
Modem, the customer must contact
Modem
Suddenlink with the MAC address. If there
are several MAC addresses on the Modem,
please use the "HFC" or "RF" MAC address.
Off
No Connection
Verify all cable connections and try
Cable Connection
resetting the Modem.
Actvity
Flashing
Traffic is passing through the
N/A
Green
cable modem port.
Ethernet
Solid
None
Successfully found the computer through
Green
an Ethernet connection.
Off
No Ethernet found
Verify Ethernet cable connections, the
TCP/IP settings and the NIC. You might
need to reinstall the NIC drives.
USB
Solid
None
Successfully found the computer through
Green
USB connection.
Off
No USB found
Verify USB cable connections, the TCP/IP
settings and the USB cable. You might need
to reinstall the USB drivers.
► Back View
► Mac Address Label
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