C6500 PRO - Inconsistent print output

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  • drodas78
    Technician
    50+ Posts
    • Jun 2008
    • 91
    #1

    C6500 PRO - Inconsistent print output

    Hello.

    The machine is doing inconsistent print output every couple hundreds of prints. And then the printer output is correct again.

    Attached are 5 files:
    OK: This is the correct output
    error01 to error03: were the inconsistences

    And errorOther is another inconsistence print output not related to the print run of first 4 images.

    Some one could tell me what has to be done or changed to not have this inconsistences?

    Thank you.
    Tags: 500, business, c650, c6500, codes, consistent, couple, cyan, drum, error, erroro, every, files, images, laser, one, output, print, printer, prints, pro, refresh, run, shorting, transfer, unit
    • Herrmann
      Senior Tech
      Site Contributor
      500+ Posts
      • Jan 2006
      • 792
      #2
      yellow is running wild
      do you have any c- codes? check in service mode.
      second: check the yellow transfer roller
      third: interchange the yellow drum to the cyan drum and see, if the error changes to cyan
      fourth: to check if its a laser issue, interchange the yellow laser unit agianst the cyan unit, what happens?
      If sometimes you feel a little useless, offended and depressed always remember that you were once the fastest and most victorious sperm of hundreds of millions!

        Comment

        • Stirton.M
          All things Konica Minolta
          1,000+ Posts
          • Oct 2009
          • 1804
          #3
          I would say interchange the dev unit as well, be sure to place tape over the toner add hole so as to not mix colours. This is temporary and may not show up the problem as intermittent as this one.

          Colour stabilization may be at fault too. Ensure the machine is set for quality, not speed.

          Also, check the drum ground tabs, along with all bias connects. Sometimes oxidation will cause this.
          "Many years ago I chased a woman for almost two years, only to discover that her tastes were exactly like mine: we both were crazy about girls."
          ---Groucho Marx


          Please do not PM me for questions related to Konica Minolta hardware.
          I will not answer requests or questions there.
          Please ask in the KM forum for the benefit of others to see the question and give their input.

            Comment

            • random
              #4
              I have seen similar and it just about always is the coating on the drum worn off and shorting on the developer tank. So I would first inspect the drum surface for pinholes or worn areas. Other than that you need to looking at bias's

                Comment

                • don
                  #5
                  Check your Yellow charging corona. you can swap it with other. I think the problem is with yellow first transfer roller.

                    Comment

                    • ESA
                      #6
                      You have what apprears to be a few things going on. With the cross track banding that would apprear to be drum, however the yellow band by itself I seen pop up and go. I would check to see if machine is set to quality setting vs speed as well because of the coverage make sure you have toner refresh enabled. Check you toner sensors. See if they are at correct level.

                        Comment

                        • drodas78
                          Technician
                          50+ Posts
                          • Jun 2008
                          • 91
                          #7
                          The problem didn't show up again

                          Hi.

                          Thank you to all of you for your help and interest. The problem don't showed up again after several thousands of prints and since this is the only machine on the business I need the machine to be always working. I hope the problem will not show again.

                          Regards.

                            Comment

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