BizHub C451 black printing

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  • Hadaf
    • May 2025

    #1

    [Misc] BizHub C451 black printing

    Hi guys
    I bought a used Konica Minolta Bizhub C451, while prinitng black/colour the black printer skips a complete line form the top and some time a small line from the bottom the colour it prints all fine

    konica minolta technician was called in, he said your issue is due to black imaging unit so i got it from another machine and replaced it but it is still the same NO DIFFERENCE at all

    sample image is attached
    Picture 061.jpg
    white line can be seen on the top

    please advice?
  • dallas
    Trusted Tech

    100+ Posts
    • Jun 2008
    • 115

    #2
    Re: BizHub C451 black printing

    - Clean the BK Laserglas (Developer throw out)
    - Put the BK IU back to the other Machine
    - Buy for this Unit a new BK IU.

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    • JustManuals
      Field Supervisor

      5,000+ Posts
      • Jan 2006
      • 9838

      #3
      Re: BizHub C451 black printing

      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

      • Hadaf

        #4
        Re: BizHub C451 black printing

        Thank you Dallas,

        i called in a NON Konica Minolta technician and he did exectly what you said, just cleaned the glasss under neeth the black IU and it works like a charm now

        your help is really appriciated

        Regards

        Comment

        • ni311
          Senior Tech

          Site Contributor
          500+ Posts
          • May 2008
          • 658

          #5
          Re: BizHub C451 black printing

          The technician from KM said what Dallas said but just in reverse order His goal was to sell you a new k unit and afterward to fix your machine even if these two operations aren't related as it looks at first glance.
          Konica Minolta Error Codes - Explanations and Solutions

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