Mpc5000 m lines

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  • banginbishop
    grumpy old git

    500+ Posts
    • Oct 2007
    • 894

    #1

    Mpc5000 m lines

    Magenta lines. Changed c,m, y as over pm life. Swapped m with c drum but m lines not changed. Stuck ran IPU test patterns but didn't really confirm much other than its engine based fault.
    Incontinentia Buttocks
  • Eric1968
    Service Manager

    1,000+ Posts
    • Jan 2009
    • 2458

    #2
    Re: Mpc5000 m lines

    Did you replace the ITB Cleaning Unit?

    Comment

    • banginbishop
      grumpy old git

      500+ Posts
      • Oct 2007
      • 894

      #3
      Re: Mpc5000 m lines

      no, ITb cleaning unit is ok. I've stopped the copy half way and the cleaning unit does its job.
      Incontinentia Buttocks

      Comment

      • banginbishop
        grumpy old git

        500+ Posts
        • Oct 2007
        • 894

        #4
        Re: Mpc5000 m lines

        Copy sample

        wondering if its the IPU but maybe thinking too far ahead.
        Attached Files
        Incontinentia Buttocks

        Comment

        • Eric1968
          Service Manager

          1,000+ Posts
          • Jan 2009
          • 2458

          #5
          Re: Mpc5000 m lines

          Could be a problem in the Magenta DV-Unit, or maybe the M-Transfer Roller in the ITB is not making good contact with the M-Drum Unit. You can also check for SC's in the SMC-list. Some SC's are only logged and don't show up on the screen.

          I also saw a bulletin about Cyan and Yellow not showing up on the print. That had something to do with a faulty Belt Lift Motor.

          Comment

          • banginbishop
            grumpy old git

            500+ Posts
            • Oct 2007
            • 894

            #6
            Re: Mpc5000 m lines

            Originally posted by Eric1968
            Could be a problem in the Magenta DV-Unit, or maybe the M-Transfer Roller in the ITB is not making good contact with the M-Drum Unit. You can also check for SC's in the SMC-list. Some SC's are only logged and don't show up on the screen.

            I also saw a bulletin about Cyan and Yellow not showing up on the print. That had something to do with a faulty Belt Lift Motor.
            this is the bit im struggling to understand. I have magenta lines on the tx belt so the way I understand it is the lines appear on the drum via the drum charge roller and get pulled off via an opposite charge on the tx unit - right or wrong on this?
            Incontinentia Buttocks

            Comment

            • Eric1968
              Service Manager

              1,000+ Posts
              • Jan 2009
              • 2458

              #7
              Re: Mpc5000 m lines

              Just saw a bulletin about magenta or black lines, but only when feeding from the by-pass tray. Solution was to replace the BICU-Board.

              Comment

              • CraiginAK
                Technician

                50+ Posts
                • Jan 2013
                • 88

                #8
                Re: Mpc5000 m lines

                I assume you've taken your handy little cleaner off the door and clean the lasers off ? I had tech go thru all that just for not having cleaned those, replaced drum all of that and cleaning with that cleaner fixed it.

                Comment

                • Eric1968
                  Service Manager

                  1,000+ Posts
                  • Jan 2009
                  • 2458

                  #9
                  Re: Mpc5000 m lines

                  Originally posted by CraiginAK
                  I assume you've taken your handy little cleaner off the door and clean the lasers off ? I had tech go thru all that just for not having cleaned those, replaced drum all of that and cleaning with that cleaner fixed it.
                  A dirty laser unit, or a dirty laser slitt glass causes white lines.

                  Comment

                  • digicor
                    Service Manager

                    1,000+ Posts
                    • Jul 2008
                    • 1159

                    #10
                    Re: Mpc5000 m lines

                    looks like charge roller unit in the m, i have to change the charge roller units quite often if using aftermarket drum units, and on oem it happens periodically if the dv is getting week it will build up and the charge roller leaner cant keep up. tuning into lines like these.

                    Comment

                    • banginbishop
                      grumpy old git

                      500+ Posts
                      • Oct 2007
                      • 894

                      #11
                      Re: Mpc5000 m lines

                      Originally posted by digicor
                      looks like charge roller unit in the m, i have to change the charge roller units quite often if using aftermarket drum units, and on oem it happens periodically if the dv is getting week it will build up and the charge roller leaner cant keep up. tuning into lines like these.
                      forgive me here but I've stated I've replaced the cyan Magenta and yellow drum units all oem. the magenta line has not changed when I swapped it with the cyan drum unit so its not a charge roller fault as such. Its in the same place same size hence why im stuck and as eric said cleaning the laser gives you white lines ref a previous post.
                      Incontinentia Buttocks

                      Comment

                      • slimslob
                        Retired

                        Site Contributor
                        25,000+ Posts
                        • May 2013
                        • 37533

                        #12
                        Re: Mpc5000 m lines

                        Point of clarification, does this line appear on copies, prints, or both. If it does not appear during printing, you can rule out the engine and start looking at the scanner. Usually a small spot or line of light red or pink ink on the slit glass shows up as a magenta line on color copies and might show up as a black line on black and white copies.

                        Comment

                        • NeoMatrix
                          Senior Tech.

                          2,500+ Posts
                          • Nov 2010
                          • 3513

                          #13
                          Re: Mpc5000 m lines

                          Do an enlarge 141% and reduction copy 71% and tells us if the lines get bigger or smaller....
                          Inauguration to the "AI cancel-culture" fraternity 1997...
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                          Comment

                          • BLADE
                            former propeller tester

                            250+ Posts
                            • Dec 2009
                            • 478

                            #14
                            Re: Mpc5000 m lines

                            maybe its a drag line from something rubbing the image (it seems to be only where the magenta image is and not out in the middle of nowhere)

                            Comment

                            • Iowatech
                              Not a service manager

                              2,500+ Posts
                              • Dec 2009
                              • 3930

                              #15
                              Re: Mpc5000 m lines

                              Originally posted by banginbishop
                              this is the bit im struggling to understand. I have magenta lines on the tx belt so the way I understand it is the lines appear on the drum via the drum charge roller and get pulled off via an opposite charge on the tx unit - right or wrong on this?
                              That's one way that happens, the charge roller gets contaminated and doesn't charge the drum in those areas. No charge = toner always attracted to that part of the drum. Then that toner gets transferred to the ITB and will appear on prints and copies.

                              (A damaged drum or drum cleaning blade can cause similar issues.)

                              For what it is worth, the vertical magenta bar between between the four horizontal magenta lines in your picture makes it kind of look like the lead edge of the paper is hitting a pile of magenta toner somewhere in the machine. Probably not (I haven't seen that in years), but something you might want to check if time permits.

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