Bizhub C258 artefacts, strange lines on printouts

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  • FrohnB
    Service Manager

    Site Contributor
    1,000+ Posts
    • Jul 2017
    • 1919

    #16
    Re: Bizhub C258 artefacts, strange lines on printouts

    Have you tried a different Transfer roller?
    Omertà

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    • Takhnamishvili
      Technician
      • Mar 2019
      • 53

      #17
      Re: Bizhub C258 artefacts, strange lines on printouts

      Guys, I solved this issue by increasing Vpp-K value. Image became perfect. Thank to all of you and especially to tsbservice! Solution is temporary, customer will change black drum with new one after few days.

      Comment

      • tsbservice
        Field tech

        Site Contributor
        5,000+ Posts
        • May 2007
        • 7999

        #18
        Re: Bizhub C258 artefacts, strange lines on printouts

        Originally posted by Takhnamishvili
        Guys, I solved this issue by increasing Vpp-K value. Image became perfect. Thank to all of you and especially to tsbservice! Solution is temporary, customer will change black drum with new one after few days.
        Glad you sorted it.
        Actually those guys who advice to change black drum save the day
        A tree is known by its fruit, a man by his deeds. A good deed is never lost, he who sows courtesy, reaps friendship, and he who plants kindness gathers love.
        Blessed are they who can laugh at themselves, for they shall never cease to be amused.

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        • Takhnamishvili
          Technician
          • Mar 2019
          • 53

          #19
          Re: Bizhub C258 artefacts, strange lines on printouts

          Originally posted by tsbservice
          Glad you sorted it.
          Actually those guys who advice to change black drum save the day
          Yep, black drum failed, as guys mentioned and advised to change it. But I learned how to solve it temporary, earlier I have never touched Vpp values, did not know anything about them😁

          Comment

          • Gift
            Service Manager

            1,000+ Posts
            • Mar 2011
            • 2459

            #20
            Re: Bizhub C258 artefacts, strange lines on printouts

            Originally posted by tsbservice
            Glad you sorted it.
            Actually those guys who advice to change black drum save the day
            Still interesting, I never really fiddled round with KM voltages, too so I'll keep that one in mind and thx for that hint.

            Comment

            • copier tech
              Field Supervisor

              5,000+ Posts
              • Jan 2014
              • 8133

              #21
              Re: Bizhub C258 artefacts, strange lines on printouts

              Originally posted by Takhnamishvili
              Yep, black drum failed, as guys mentioned and advised to change it. But I learned how to solve it temporary, earlier I have never touched Vpp values, did not know anything about them😁
              You changed all those parts for a simple drum issue?

              Let us eat, drink, and be merry, because tomorrow we may die!

              For all your firmware & service manual needs please visit us at:

              www.copierfirmware.co.uk - www.printerfirmware.co.uk

              Comment

              • Takhnamishvili
                Technician
                • Mar 2019
                • 53

                #22
                Re: Bizhub C258 artefacts, strange lines on printouts

                Originally posted by copier tech
                You changed all those parts for a simple drum issue?

                Yes
                Last edited by Takhnamishvili; 10-23-2021, 10:06 PM.

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                • rjjr148
                  Junior Member
                  • Jan 2023
                  • 8

                  #23
                  Bizhub C308 stranges lines appear on print in color & bw.
                  Any suggestions will be highly appreaciated.
                  Attached Files

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                  • Synthohol
                    Certified Konica Expert

                    Site Contributor
                    5,000+ Posts
                    • Mar 2016
                    • 5808

                    #24
                    feed direction?
                    We know a thing or two because we've seen a thing or two.
                    The medication helps though...

                    Comment

                    • blackcat4866
                      Master Of The Obvious

                      Site Contributor
                      10,000+ Posts
                      • Jul 2007
                      • 23002

                      #25
                      Those color bars have to be crossfeed. One of your drums is arcing to it's developing unit. Usually it's the one with the faintest color bar, so judging from your samples it's either yellow or magenta. Replace the drum and developer units of the desired color together at the same time.
                      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 =^..^=

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