Toshiba 3005AC Rainbow running Lengthwise on certain halftones

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  • buzz
    Trusted Tech

    Site Contributor
    250+ Posts
    • Aug 2013
    • 279

    Toshiba 3005AC Rainbow running Lengthwise on certain halftones

    I seen a previous post a few months back, but was for a different model. Sorry if its redundant.

    Here's the samples. Its not super obvious, but it is recognizable with it in hand.

    20200814_162945.jpg
    20200814_162902.jpg
    20200814_162824.jpg

    The rainbows are subtle. It shows up on these prints with a light tan halftone graphic.

    I have CMY drums and rebuild kits with grids on order.

    Would this be the step in the right direction? Any feedback would be great.

    What counters and calibrations do I perform after rebuilding these?

    Thanks so much!
  • blackcat4866
    Master Of The Obvious

    Site Contributor
    10,000+ Posts
    • Jul 2007
    • 22693

    #2
    Re: Toshiba 3005AC Rainbow running Lengthwise on certain halftones

    PM interval for the 3005AC is 180K black, 90K color. (3) color rebuild includes (3) drums and EPU-KIT-FC505CLR.

    You'll need to do the (3) color developer stir, and color calibration. Before you start, I'd suggest printing off the FS-30-103 PM list.

    Excuse me please if I won't read you the manual. You seem perfectly able to read the procedure to stir the developer and do a color calibration for yourself. And when you figure it out for yourself you'll get that good feeling of figuring it out for yourself.

    If you'd like a more detailed analysis print these pages, then show them to us:
    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

    • Vincent128
      Trusted Tech

      Site Contributor
      250+ Posts
      • Sep 2015
      • 331

      #3
      Re: Toshiba 3005AC Rainbow running Lengthwise on certain halftones

      Originally posted by blackcat4866
      PM interval for the 3005AC is 180K black, 90K color. (3) color rebuild includes (3) drums and EPU-KIT-FC505CLR.

      You'll need to do the (3) color developer stir, and color calibration. Before you start, I'd suggest printing off the FS-30-103 PM list.

      Excuse me please if I won't read you the manual. You seem perfectly able to read the procedure to stir the developer and do a color calibration for yourself. And when you figure it out for yourself you'll get that good feeling of figuring it out for yourself.

      If you'd like a more detailed analysis print these pages, then show them to us:
      Oooo...this is a new version of your file me thinks. *yoinks*

      Comment

      • blackcat4866
        Master Of The Obvious

        Site Contributor
        10,000+ Posts
        • Jul 2007
        • 22693

        #4
        Re: Toshiba 3005AC Rainbow running Lengthwise on certain halftones

        Originally posted by Vincent128
        Oooo...this is a new version of your file me thinks. *yoinks*
        I did a revision about a year ago. If you're looking for a specific paper size just say so.
        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

        • tomasreabe
          Junior Member
          • Oct 2024
          • 4

          #5
          Originally posted by blackcat4866
          Re: Toshiba 3005AC Rainbow running Lengthwise on certain halftones

          PM interval for the 3005AC is 180K black, 90K color. (3) color rebuild includes (3) drums and EPU-KIT-FC505CLR.

          You'll need to do the (3) color developer stir, and color calibration. Before you start, I'd suggest printing off the FS-30-103 PM list.

          Excuse me please if I won't read you the manual. You seem perfectly able to read the procedure to stir the developer and do a color calibration for yourself. And when you figure it out for yourself you'll get that good feeling of figuring it out for yourself.

          If you'd like a more detailed analysis print these pages, then show them to us:
          Hello, I think I have a similar problem but it appears to be on all colors not just a single one.
          Wondering if this is a transfer belt issue or where I should start looking.
          Estudio 3505AC
          IMG_3824.jpg

          Comment

          • Rusty.Harris
            Senior Tech

            Site Contributor
            500+ Posts
            • Jan 2021
            • 565

            #6
            Originally posted by tomasreabe

            Hello, I think I have a similar problem but it appears to be on all colors not just a single one.
            Wondering if this is a transfer belt issue or where I should start looking.
            Estudio 3505AC
            IMG_3824.jpg
            Measure the distance between the start of the first blank area, to the end of the blank area to give you the diameter of the blank area. That will help track down what could be causing the issue as it is a repeating problem.

            Comment

            • tomasreabe
              Junior Member
              • Oct 2024
              • 4

              #7
              Originally posted by Rusty.Harris

              Measure the distance between the start of the first blank area, to the end of the blank area to give you the diameter of the blank area. That will help track down what could be causing the issue as it is a repeating problem.
              Printing an 11x 17 it repeated every 3-3/4" so that would be a 1.2" roller or so.

              Comment

              • blackcat4866
                Master Of The Obvious

                Site Contributor
                10,000+ Posts
                • Jul 2007
                • 22693

                #8
                There are three choices for that (94 to 96mm):
                Fuser film (usually reprints image elements down the page)
                Drum
                Facing roller (Poor ground connection to the facing roller in the transfer belt unit)

                I'm leaning towards the facing roller ground contact. =^..^=
                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

                • tomasreabe
                  Junior Member
                  • Oct 2024
                  • 4

                  #9
                  Originally posted by blackcat4866
                  There are three choices for that (94 to 96mm):
                  Fuser film (usually reprints image elements down the page)
                  Drum
                  Facing roller (Poor ground connection to the facing roller in the transfer belt unit)

                  I'm leaning towards the facing roller ground contact. =^..^=
                  Is there a specific maximum reisistance I should be looking for?
                  I did see resistance going up to 1M ohm so I know that is not good.

                  Comment

                  • blackcat4866
                    Master Of The Obvious

                    Site Contributor
                    10,000+ Posts
                    • Jul 2007
                    • 22693

                    #10
                    um ... yeah, 1MΩ is bad. The correct resistance between the roller and the contact vary at ≤0.10Ω. Keep in mind that's rolling resistance. When it's not rolling, the resistance will increase significantly.
                    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

                    • tomasreabe
                      Junior Member
                      • Oct 2024
                      • 4

                      #11
                      Originally posted by blackcat4866
                      um ... yeah, 1MΩ is bad. The correct resistance between the roller and the contact vary at ≤0.10Ω. Keep in mind that's rolling resistance. When it's not rolling, the resistance will increase significantly.
                      So I did replace the transfer belt assembly, I could not finde where to order the bearings that were causing the high resistance.
                      The new assembly has a resistance around 4-6 ohms, so much better and the image is much improved.
                      does anyone know where to get just the bearigns from as I did find a few rollers that do have similar bearings that the ohms resistance is realy high. 250K to 500K

                      Thanks for all the help

                      Comment

                      • blackcat4866
                        Master Of The Obvious

                        Site Contributor
                        10,000+ Posts
                        • Jul 2007
                        • 22693

                        #12
                        There is a wire leaf spring that makes physical contact between the facing roller and the electrical contact. It's easy to displace this leaf spring when disassembling.
                        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

                        • Munter
                          Member
                          • Jul 2011
                          • 14

                          #13
                          Originally posted by blackcat4866
                          I'm leaning towards the facing roller ground contact. =^..^=
                          I'm not familiar with this term. When you say "facing roller" am I correct in assuming you are talking about the roller inside the Tx belt that the secondary Tx roller indirectly presses against?

                          Also, could you provide that ANSI A file for A4 paper, please?

                          Comment

                          • blackcat4866
                            Master Of The Obvious

                            Site Contributor
                            10,000+ Posts
                            • Jul 2007
                            • 22693

                            #14
                            Originally posted by Munter

                            I'm not familiar with this term. When you say "facing roller" am I correct in assuming you are talking about the roller inside the Tx belt that the secondary Tx roller indirectly presses against?

                            Also, could you provide that ANSI A file for A4 paper, please?
                            Yes, that's correct.

                            Is this what you want? =^..^=

                            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

                            • Munter
                              Member
                              • Jul 2011
                              • 14

                              #15
                              Awesome. Thank you very much. 😁

                              Comment

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