BH C203 prints green super faint

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  • aAandy
    Trusted Tech

    Site Contributor
    250+ Posts
    • Apr 2012
    • 364
    #1

    BH C203 prints green super faint

    hello people

    was called out to this machine for smudged prints

    this machine had a portion of the transfer belt edge support tape lifted, so i removed it - i also had to reshape the black mylar cover strips on each blank lamp assembly as they had been bent out of shape by the lifted ITB tape and were scraping the belt

    put it back together and all smudging gone, machine prints all single primary colours perfectly (cyan, magenta, yellow and black) but when i select the single colour green it comes out almost not visible where it was fine before (single colour blue comes out looking just cyan, single colour red comes out looking pink)

    also getting P21 which won't go away after cleaning the sensors & performing initialise & stabilization

    attached are sky shots in single colours - the blank one is green (can barely be seen by eye)

    BH C203.pdf

    thought anyone?

    thanks in advance
    Last edited by aAandy; 08-03-2016, 12:33 AM.
    Tags: None
    • blackcat4866
      Master Of The Obvious

      Site Contributor
      10,000+ Posts
      • Jul 2007
      • 22858
      #2
      Re: BH C203 prints green super faint

      Originally posted by aAandy
      ... put it back together and all smudging gone, machine prints all single primary colours perfectly (cyan, magenta, yellow and black) but when i select the single colour green it comes out almost not visible where it was fine before (single colour blue comes out looking just cyan, single colour red comes out looking pink)

      also getting P21 which won't go away after cleaning the sensors & performing initialise & stabilization

      thoughts anyone?

      thanks in advance
      Well, clearly it's yellow that you're missing. Try printing off 15% fill images. It will tell you more.
      Attached Files
      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

        • aAandy
          Trusted Tech

          Site Contributor
          250+ Posts
          • Apr 2012
          • 364
          #3
          Re: BH C203 prints green super faint

          Originally posted by blackcat4866
          Well, clearly it's yellow that you're missing. Try printing off 15% fill images. It will tell you more.
          i added an attachment to the original post - yellow is printing fine as a single colour

            Comment

            • blackcat4866
              Master Of The Obvious

              Site Contributor
              10,000+ Posts
              • Jul 2007
              • 22858
              #4
              Re: BH C203 prints green super faint

              Originally posted by aAandy
              i added an attachment to the original post - yellow is printing fine as a single colour
              What % fill? If you look at the gradation printoffs of the images in those attached documents you'll see that quality issue can affect different fill rates differently.
              I have a perfect example of that. On a KM-3551ci the Kyocera U089 Sample Set looked perfect, yet the quality issue showed nicely between 10 and 50% fill. Look at pages 5 and 6.
              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

                • Synaux
                  Service Manager

                  Site Contributor
                  1,000+ Posts
                  • Mar 2012
                  • 1224
                  #5
                  Re: BH C203 prints green super faint

                  Originally posted by blackcat4866
                  What % fill? If you look at the gradation printoffs of the images in those attached documents you'll see that quality issue can affect different fill rates differently.
                  I have a perfect example of that. On a KM-3551ci the Kyocera U089 Sample Set looked perfect, yet the quality issue showed nicely between 10 and 50% fill. Look at pages 5 and 6.
                  As a side note, I have had the same thing with bad IUs

                  Originally posted by aAandy
                  machine prints all single primary colours perfectly (cyan, magenta, yellow and black) but when i select the single colour green it comes out almost not visible where it was fine before (single colour blue comes out looking just cyan, single colour red comes out looking pink)

                  attached are sky shots in single colours - the blank one is green (can barely be seen by eye)
                  I would suspect the PH, but if it was printing okay before (aside from the smudges), I would swap a transfer belt if you can and take another look at those IDC sensors.

                    Comment

                    • aAandy
                      Trusted Tech

                      Site Contributor
                      250+ Posts
                      • Apr 2012
                      • 364
                      #6
                      Re: BH C203 prints green super faint

                      thank you gentlemen for your responses

                      returned to the machine, removed the imaging units & ITB assembly & found the rear ITB sensor cover was jammed shut - freed it, checked it didn't stick shut again, put it all back together and everything worked a treat

                      no P codes and green printed perfectly

                      thanks again for your input, very much appreciated

                      Andy

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