Uneven coverage on Konica C6000 PRO

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  • Grantow
    Technician
    • Nov 2010
    • 10
    #1

    Uneven coverage on Konica C6000 PRO

    Hi there,

    I have an C6000 fully serviced and I am having issues with uneven coverage. See attached image (A3 sheet) the top of the image is the actual colour and towards the bottom is where the problem is.
    Does anyone know how to correct this?

    Thanks in advance



    scan2922.jpg
    Tags: bottom, c6000, colour, coverage, image, konica, pro, sheet, top
    • JustManuals
      Field Supervisor

      5,000+ Posts
      • Jan 2006
      • 9838
      #2
      Re: Uneven coverage on Konica C6000 PRO

      This Parts & Service Manual can now be purchased for $12.77 and downloaded immediately after payment from:


      Just Manuals, The Internet's largest selection of manuals ~ Instant Downloads


      Paul@justmanuals.com

        Comment

        • Setright
          FSS / SPM

          100+ Posts
          • Nov 2008
          • 247
          #3
          Re: Uneven coverage on Konica C6000 PRO

          Looks like the drum charger/MCH/Corona/Grid is not evenly distanced from the drum surface.

          C6000...is there any scope for adjusting the height of the grids? A mylar in one end for example?

            Comment

            • rajesh_vnath
              #4
              Re: Uneven coverage on Konica C6000 PRO

              First take out the development unit and check for the uniformity.

                Comment

                • 1FRY1
                  Technician

                  50+ Posts
                  • Nov 2010
                  • 51
                  #5
                  Re: Uneven coverage on Konica C6000 PRO

                  Corona wire slips of seating during transportation.

                  Take out corona, wire should be in the centre of the square slot, If not just touch lightly with a screwdriver and it will ping back into place

                  OR try swapping corona with another colour to see if problem moves with it.

                    Comment

                    • Mick01
                      Trusted Tech

                      250+ Posts
                      • Nov 2012
                      • 362
                      #6
                      Re: Uneven coverage on Konica C6000 PRO

                      As per the other posts the likely culprit is charge corona wire not seated correctly.
                      There is an uneven density adjustment procedure for this model. You can find the procedure in the troubleshooting guide

                        Comment

                        • lucky13
                          Trusted Tech

                          100+ Posts
                          • May 2008
                          • 125
                          #7
                          Re: Uneven coverage on Konica C6000 PRO

                          are your coronas the right ones p# A1DUR71300 ? with purple sticker if you have ones with white sticker or no sticker your output will look like your sample

                            Comment

                            • bartrick
                              Technician

                              Site Contributor
                              • Sep 2011
                              • 11
                              #8
                              Re: Uneven coverage on Konica C6000 PRO

                              I have seen this and found the doctor blade is not adjusted correctly in the DV unit, Just determine the bad DV Unit and replace. You also can confirm by checking the gap at each end of the blade, The further off the(smaller gap on one side) the more it shows on the copies but you can not always see it by just looking at the brush

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