TECHNICAL SUPPORT
Cable Modem: Linksys BEFCMU10v4 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 flashing
"USB" light flashing
► 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.
DS
Slow
Searching for cable
Verify all cable connections and try resetting the
Flashing
connection
Modem.
Green
Fast
Searching for cable
If this is a new Modem or a replacement Modem, the
Flash
connection
customer must contact Suddenlink Technical Support
Modem
with the MAC address. If there are several MAC
addresses on the modem, please use the "HFC" or
Off
No connection
Verify all cable connections and try resetting the
Cable Connection
Modem.
US
Flashing
Looking for upstream
Verify all cable connections and try resetting the
Green
Modem.
Solid
Modem found
N/A
Green
connection
Online
Solid
None
N/A
Green
Ethernet
Solid
None
Successfully found the computer through an Ethernet
Green
connection.
Off
No Ethernet found
Verify Ethernet cable connections, the TCP/IP
settings and the NIC.
Flashing
Traffic is passing
N/A
Green
through the cable
modem port
USB
Solid
None
Successfully found the computer through USB
Green
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.
Flashing
Traffic is passing
N/A
Green
through the cable
modem port
► Back View
► Mac Address Label
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