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Hardware and Internet Setup
6
CM500 High Speed Cable Modem
You can use the LEDs to verify status and connections. The following table lists and
describes each LED on the front panel of the cable modem.
Table 1. LED descriptions
LED Icon Description
Power
• Green. Power is supplied to the cable modem.
• Off. No power is supplied to the cable modem.
• Red.
The cable modem is too warm and might overheat. For more information
about this condition, see Use LEDs to Troubleshoot on page 23.
Downstream
• Solid amber. One downstream channel is locked.
• Blinking amber. The
cable modem is scanning for a downstream channel.
• Solid green. More than one downstream channel is locked.
• Off. No downstream channel is locked.
Upstream
• Solid amber. One upstream channel is locked.
• Blinking amber.
The cable modem is scanning for an upstream channel.
• Solid green. More than one upstream channel is locked.
• Off. No upstream channel is locked.
Internet
• Solid green. The cable modem is online.
• Blinking green.
The cable modem is synchronizing with the cable Internet
provider’s cable modem termination system (CMTS).
• Off. The
cable modem is offline.
Ethernet
• Green. A powered-on device is connected to the Ethernet port at 1000 Mbps.
• Amber.
A powered-on device is connected to the Ethernet port at 10/100 Mbps.
• Blinking green or amber. The
Ethernet port is processing traffic.
• Off. No device is connected to the Ethernet port.
Back Panel
The back panel provides the connections and button shown the following figure.
Power adapter input
LAN Gigabit Ethernet port
Coaxial cable connector
Reset button
Figure 3. Cable modem back panel
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