Cable Modem Troubleshooting: RCA DCM305

Light patterns, images, manuals and more helpful info for the RCA DCM305 cable modem –

Manufacturer: RCA

Model: DCM305

Modem Light Indicators
Power/Internet **This light may be marked Power or Internet**
Off – Modem is in stand-by mode or not receiving power.
On – Modem power is activated and receiving power.
PC Link Off – No ethernet carrier is present or the modem is in stand-by mode.
On – Ethernet carrier is present with no send/receive activity.
Flashing – Indicates Send/receive activity.
Cable Off – No cable connection detected or modem is in stand-by mode.
Flashing – Cable connection is detected. Modem is not yet acquired.
On – Modem is acquired. Data can be sent.

Indicates activity over cable network. The light is off during times of no activity and flashing when activity exists.

Message Flashes when you have email (if offered by cable provider).
Notes and Useful Information

When this modem is in stand-by mode, the Internet/Power light will be off. All other lights will operate normally. While in stand-by mode, you may still be able to release/renew an IP address without any problems. Please keep this in mind when troubleshooting PC connectivity issues.

This modem has been known to go into stand-by mode automatically when acquired for the first time. Please be aware of this as a commonly overlooked problem for new installations.

Installation and User Manual
Manufacturer Product Website
Manufacturer Support Page

2 thoughts on “Cable Modem Troubleshooting: RCA DCM305”

  1. I’m having problems with download speed while using the DCM305.. I was told there could be NAT issues… is there a way to port forward with this model or should it not be an issue?

  2. Pingback: Cable Modem Index - Troubleshooting info for 60+ cable modems - Simplehelp

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