WC 7655 head scratcher... makes no sense.

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  • skyjump
    • Dec 2024
    #1

    [Misc] WC 7655 head scratcher... makes no sense.

    This Workcentre 7655 lays down yellow toner over the entire print surface whenever we send a color print job or a walk up color copy. See image below:
    IMG_09641.jpg

    However, and this is the head scratcher part, when I go into diagnostic mode an print a color graph, it prints flawlessly. See image below:
    IMG_10091.jpg

    I've changed out the color drums, made sure the bias spring is making contact with the drum unit, and eliminated the possibility of a developer housing malfunction.

    I kind of doubt that it's hardware related since the hardware works fine in diagnostic mode.

    Any suggestions?

    Thanks!
    danny.<><
    Tags: color, diagnostic, hardware, image, print
    • SeniorTch
      Trusted Tech

      Site Contributor
      100+ Posts
      • Jun 2017
      • 116
      #2
      Re: WC 7655 head scratcher... makes no sense.

      Try reloading the NC SW .If this do not works, reseat / clean contacts or replace the firewire cards and cable between NC controller and CCM controller

        Comment

        • adriansto
          Service Manager

          Site Contributor
          VIP Subscriber
          1,000+ Posts
          • Nov 2007
          • 2329
          #3
          Re: WC 7655 head scratcher... makes no sense.

          Do a deep cleanning of the machine and replace the filters.
          Then maxsetup or yellow tone down. It is too much yelow on the test page, you cant see the gradations.
          What machine software version ?

            Comment

            • adeyemi
              Trusted Tech

              250+ Posts
              • Apr 2010
              • 372
              #4
              Re: WC 7655 head scratcher... makes no sense.

              I believe you should focus more on the network controller than the machine. Start by making sure that the data cable between machine and controller is properly connected; try another cable if need be; reload the controller if still doing same thing.
              Dgtal

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                • Detonation
                  Trusted Tech

                  Site Contributor
                  250+ Posts
                  • Feb 2010
                  • 333
                  #5
                  Re: WC 7655 head scratcher... makes no sense.

                  The network controller is not involved in copying, I doubt that will be the problem. I'd also suspect machine software or SBC.

                    Comment

                    • skyjump
                      #6
                      Re: WC 7655 head scratcher... makes no sense.

                      Originally posted by adriansto
                      Do a deep cleanning of the machine and replace the filters.
                      Then maxsetup or yellow tone down. It is too much yelow on the test page, you cant see the gradations.
                      What machine software version ?
                      Software Version = 0.40.33.53375 which I think is the latest software version for this machine.

                        Comment

                        • skyjump
                          #7
                          Re: WC 7655 head scratcher... makes no sense.

                          Originally posted by adeyemi
                          I believe you should focus more on the network controller than the machine. Start by making sure that the data cable between machine and controller is properly connected; try another cable if need be; reload the controller if still doing same thing.
                          Replaced the cable. No luck. Will look into reloading the controller.

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