KM Bizhub c280 moving vertical black lines

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  • Teyr3
    Junior Member
    • Aug 2019
    • 3
    #1

    KM Bizhub c280 moving vertical black lines

    I have a KM Bizhub c280 that has been giving me these weird vertical black lines. I have included a scan of the consumables page printed from the printer.

    A few things:
    It happens on everything that is printed, from both trays and the bypass tray.
    The lines move from page to page, shifting left to right about 4 inches between pages. I can upload a sequence of pages if people need.
    The lines are only on the side being printed on. Nothing on the back unless 2 sided printing is being done, and then the lines are added to each side as they print. And shifting between pages as mentioned above.
    We have had a tech out who claimed to have no idea.

    Does anyone have an idea on what I need to do to fix this?

    KM c280 scan.pdf
    Tags: lines, page, pages, printed, shifting
    • tech51
      Senior Tech

      500+ Posts
      • Jan 2009
      • 846
      #2
      Re: KM Bizhub c280 moving vertical black lines

      Please print out the colour halftone test pages set to 125 and post them please.

      Also indicate the feed direction, that would help.

        Comment

        • Toxic
          Senior Tech

          500+ Posts
          • Dec 2009
          • 690
          #3
          Re: KM Bizhub c280 moving vertical black lines

          I remember we have this "car tire" pattern on old C203 and bad Ph unit/laser was causing that.

            Comment

            • blackcat4866
              Master Of The Obvious

              Site Contributor
              10,000+ Posts
              • Jul 2007
              • 22699
              #4
              Re: KM Bizhub c280 moving vertical black lines

              95mm is the interval for a drum defect.

              Try this:
              Attached Files
              Last edited by blackcat4866; 08-08-2019, 11:27 PM.
              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

                • dannys
                  Technician
                  • Jun 2019
                  • 12
                  #5
                  Re: KM Bizhub c280 moving vertical black lines

                  I would checked the fuser

                    Comment

                    • Max
                      Senior Tech

                      500+ Posts
                      • Oct 2011
                      • 526
                      #6
                      Re: KM Bizhub c280 moving vertical black lines

                      Had something very similar on the previous generation copier. There was a bulletine about it. Was down to one of the control boards at the back of the copier. Possibly Lazer but I'm leaning towards one of the boards.

                        Comment

                        • Synaux
                          Service Manager

                          Site Contributor
                          1,000+ Posts
                          • Mar 2012
                          • 1224
                          #7
                          Re: KM Bizhub c280 moving vertical black lines

                          Try the test pages posted by blackcat first to figure out if you have a bad IU or not, but this looks like and I/O issue to me. I am suspecting ram.

                            Comment

                            • Teyr3
                              Junior Member
                              • Aug 2019
                              • 3
                              #8
                              Re: KM Bizhub c280 moving vertical black lines

                              Originally posted by blackcat4866
                              95mm is the interval for a drum defect.

                              Try this:
                              Apparently my scanner is slightly crooked. (Not the one on the printer in question).

                              Someone asked about feed direction so I'll answer that the beset I can.
                              Facing the printer the pages sit portrait, feed to the right, and print out face down top to the left (landscape).

                              5.jpg7.jpg8.jpg9.jpg10.jpg1.jpg2.jpg3.jpg4.jpg6.jpg

                                Comment

                                • Synthohol
                                  Certified Konica Expert

                                  Site Contributor
                                  5,000+ Posts
                                  • Mar 2016
                                  • 5463
                                  #9
                                  Re: KM Bizhub c280 moving vertical black lines

                                  you cant use portrait and landscape in the same sentence, its confusing.
                                  simply say SEF or LEF. we understand.
                                  We know a thing or two because we've seen a thing or two.
                                  The medication helps though...

                                    Comment

                                    • Teyr3
                                      Junior Member
                                      • Aug 2019
                                      • 3
                                      #10
                                      Re: KM Bizhub c280 moving vertical black lines

                                      Originally posted by Synthohol
                                      you cant use portrait and landscape in the same sentence, its confusing.
                                      simply say SEF or LEF. we understand.
                                      Printer feeds from the paper tray LEF, but rolls out to be picked up the other way, facedown. Not sure how to describe that better.

                                        Comment

                                        • blackcat4866
                                          Master Of The Obvious

                                          Site Contributor
                                          10,000+ Posts
                                          • Jul 2007
                                          • 22699
                                          #11
                                          Re: KM Bizhub c280 moving vertical black lines

                                          That's clear enough. From the images I've seen it's got to be primary transfer belt cleaning or black drum cleaning.

                                          If it's primary transfer belt cleaning the color of the background will be composite black: closer to brown or purple.
                                          If it's black drum cleaning the color of the background will be black ... just black.
                                          I can't really be sure from the scans, but Colorpic tells me the background is ~6%K and nothing else. =^..^=
                                          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

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