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Table 1. LED descriptions
DescriptionIconLED
Solid green. Power is supplied to the cable modem.
Off. No power is supplied to the cable modem.
Solid red. The cable modem is too warm and might overheat. For
more information about this condition, see Use LEDs to troubleshoot
on page 23.
Power
Solid amber. One downstream channel is locked.
Solid green. Two or more downstream channels are locked.
Blinking green. The cable modem is scanning for a downstream
channel.
Off. No downstream channel is locked.
Downstream
Solid amber. One upstream channel is locked.
Solid green. Two or more upstream channels are locked.
Blinking green. The cable modem is scanning for an upstream
channel.
Off. No upstream channel is locked.
Upstream
Solid green. The cable modem is online.
Blinking green. The cable modem is synchronizing with the cable
provider’s cable modem termination system (CMTS).
Off. The cable modem is offline.
Online
Solid green. A powered-on device is connected to the LAN port at
1000 Mbps.
Solid amber. A powered-on device is connected to the LAN port at
10 Mbps or 100 Mbps.
Off. No device is connected to the LAN port.
Blinking green or amber. The LAN port is processing traffic.
Ethernet
Rear panel
The connections and button on the rear panel are shown in the following figure.
User Manual7Hardware Setup
High Speed Cable Modem
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