C550 Washed out Missing Bird on demo page

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  • minoltaed
    Service Manager
    • Aug 2009
    • 44

    #1

    C550 Washed out Missing Bird on demo page

    We have a c550 that is exhibiting some weird quality issue. We have reseated the memory. Half tones look good. Image on transfer belt matches output. Replaced 2nd transfer roller. Swapped drums. Reinstalled firmware. When we print out demo page only half tones exist. Please see attached. Any help, ideas would be appreciated.
    Attached Files
  • minimerlin
    Senior Tech

    Site Contributor
    500+ Posts
    • Nov 2007
    • 851

    #2
    Re: C550 Washed out Missing Bird on demo page

    What do the CMYK gradation test prints look like?
    Please do not PM me without asking first.

    Comment

    • habik
      Service Manager

      Site Contributor
      1,000+ Posts
      • Apr 2010
      • 2013

      #3
      Re: C550 Washed out Missing Bird on demo page

      Try first 1 PC K only halftones.
      Then cmyk halftones
      Then cmyk gradations
      Then list output and scan it and post it here.

      A wild guess is Print head or MFPB.


      Sent from my iDon't believe in marketing device using Tapatalk
      .OK Google! ... will I need Berrocca this morning?
      Firmwares HERE

      Comment

      • blackcat4866
        Master Of The Obvious

        Site Contributor
        10,000+ Posts
        • Jul 2007
        • 22942

        #4
        Re: C550 Washed out Missing Bird on demo page

        I'll have to throw in a WAG also. My guess is that your black is completely gone, and the only blacks that you are seeing are composite black, that is: CMY (more like brown than black).

        It most likely is black developing, but could be anything to do with the black imaging unit. =^..^=
        If you'd like a serious answer to your request:
        1) demonstrate that you've read the manual
        2) demonstrate that you made some attempt to fix it.
        3) if you're going to ask about jams include the jam code.
        4) if you're going to ask about an error code include the error code.
        5) You are the person onsite. Only you can make observations.

        blackcat: Master Of The Obvious =^..^=

        Comment

        • Tech Helpdesk
          Trusted Tech

          100+ Posts
          • Jul 2015
          • 112

          #5
          Re: C550 Washed out Missing Bird on demo page

          Originally posted by minoltaed
          We have a c550 that is exhibiting some weird quality issue. We have reseated the memory. Half tones look good. Image on transfer belt matches output. Replaced 2nd transfer roller. Swapped drums. Reinstalled firmware. When we print out demo page only half tones exist. Please see attached. Any help, ideas would be appreciated.
          Stick with the basics, do the halftone prints to check image, if the black is non existent change the black IU because these units are known to dump the developer.

          Comment

          • EarthKmTech
            Step aside, noob

            1,000+ Posts
            • May 2009
            • 2139

            #6
            Re: C550 Washed out Missing Bird on demo page

            initialize and stabilize done?

            seen this before.

            Comment

            • CraigW
              Trusted Tech

              Site Contributor
              250+ Posts
              • Dec 2010
              • 417

              #7
              Re: C550 Washed out Missing Bird on demo page

              Originally posted by EarthKmTech
              initialize and stabilize done?

              seen this before.
              Had a different KM color machine that was light and reset and stabilize fixed it right up but..... you have to make sure it is not calling for any toners before you perform it.

              Comment

              • minoltaed
                Service Manager
                • Aug 2009
                • 44

                #8
                Re: C550 Washed out Missing Bird on demo page

                Thanks guys. Yes have already done initialize and stabilize. Replaced bk drum. Ended up being the MFP board.

                Comment

                • emujo
                  Field Supervisor

                  2,500+ Posts
                  • Jun 2009
                  • 3009

                  #9
                  Re: C550 Washed out Missing Bird on demo page

                  I was going with "the bird flew back up north for the summer", hope it's not too late. Emujo
                  If you don't see your question answered in the forum, please don't think it's OK to PM me for a personal reply...I do not give out firmware and/or manuals.

                  Comment

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