Canon NIC stopped working

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  • Morpheus
    • Jun 2025

    #1

    Canon NIC stopped working

    Hello,

    Hope someone can aide in solving this issue.

    The copier worked fine for years then it just stopped working on the network. The User reported that it stopped printing and the scanning to the smb folder no longer work. When a USB cable was connected the User was able to print again. No surprise. The print board must still be working, correct?

    Here is what troubleshooting I did:
    1. Changed the port on the network switch
    2. Changed the network cable
    3. Changed the copier from static IP to DHCP (it would not obtain an IP off the network from the DHCP Server)
    4. Turned off Auto-Negotiate on the Ethernet settings
      1. Tried Full Duplex then Half Duplex
      2. Tried 10MB then 100MB

    5. Connected the copier to a completely different switch
    6. Initialized all default Data/Settings in Additional Function (essential wiping all network settings out)
    7. Enter Service mode and cleared all errors
    8. Attempted to ping the local router from the copier in the Addition Function settings. (No Response from Host)
      1. Pinging any IP address on the network returned "No Response from host"
      2. However pinging the loopback address 127.0.0.1 and the hard coded IP address 192.168.1.99 all returned with "Response from Host"

    9. Disabled USB port. (grasping at straws on this one, i was just trying almost anything at this point)


    Steps not listed in the order that they were performed. None of the above steps were successful at getting the copier to communicate on the network again. In my experience if the NIC failed then usually pinging the loopback address fails as well or pinging the IP address of the device would fail if it were a hardware issue with the NIC. Both ping tests were successful. That leaves me stumped to what could be causing this copier to not work on the network.

    Each network switch that I connected the copier to shows a link light however not traffic appears to be flowing from/to the copier. The pins on the copier NIC do not look damaged.

    Thanks for any suggestions.
  • Iowatech
    Not a service manager

    2,500+ Posts
    • Dec 2009
    • 3930

    #2
    Re: Canon NIC stopped working

    Was there an operating system upgrade on the computers running the network?

    Comment

    • Morpheus

      #3
      Re: Canon NIC stopped working

      I was able to resolve this issue today. Worked on it for 3 hours again today. The cause of the problem turn out to be the Verizon FiOS router. We took another copier to the location and had the same results as the original copier. Not likely to have to back NIC's on two different copiers.

      The Verizon router was the last thing to suspect because access to the Internet was working fine, however it was only working for Wireless connections, not for hardwired connections. The user switched their computer to wireless and was not on the wired connection which is why they were able to access the Internet. As soon as I switched the computer to the Ethernet connection it stopped working on the network, and on the Internet, which lead me to the Verizon router. A restart of the Verizon equipment cleared all the issue.

      All print jobs came out and the scanning worked again. This was one to store in the KB.

      Thanks for the reply Iowatech.

      Comment

      • KenB
        Geek Extraordinaire

        2,500+ Posts
        • Dec 2007
        • 3944

        #4
        Re: Canon NIC stopped working

        Glad you got it fixed.

        One of the first things to try in a case like this is to connect your notebook with a crossover, thus eliminating the customer's network completely.
        “I think you should treat good friends like a fine wine. That’s why I keep mine locked up in the basement.” - Tim Hawkins

        Comment

        • Morpheus

          #5
          Re: Canon NIC stopped working

          Agreed. I usually start up the wire sniffer and look at the network traffic however i did not bring all the troubleshooting tools to address the issue which lead me to the long resolutions time to the problem.

          Comment

          • slimslob
            Retired

            Site Contributor
            25,000+ Posts
            • May 2013
            • 37372

            #6
            Re: Canon NIC stopped working

            Originally posted by KenB
            Glad you got it fixed.

            One of the first things to try in a case like this is to connect your notebook with a crossover, thus eliminating the customer's network completely.
            One other thing that I do is to connect my laptop to the cable that was connected to the printer/MFP. If my laptop cannot connect/ping then there is a problem with the network.

            Comment

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