Bizhub 7145 streaks on prints

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  • svwpa
    Technician
    • Dec 2010
    • 13

    #1

    Bizhub 7145 streaks on prints

    Our bizhub 7145 developed this streak today. The streaks show up on copies and on prints (from computer). I pulled both of the blue knobs on the front on the copier in and out before this print. That manuver had no change on the streaking. Do you have any ideas on how to fix this problem or what is causing it. See attachment

    Total = 220,000
    52,000 print copies

    Thanks, Mark
    Attached Files
  • 173545
    Technician

    Site Contributor
    • Jul 2007
    • 16

    #2
    Looks like the drum and/or cleaning blade needs replacing.

    Comment

    • RockETop
      Curmudgeon at large

      100+ Posts
      • Apr 2007
      • 171

      #3
      Yes, that is the cleaning blade.

      Comment

      • svwpa
        Technician
        • Dec 2010
        • 13

        #4
        Does it make sense that it would go bad in one day. We changed the tonner cartridge 2 weeks ago. No one reported a paper jam. Thanks, Mark

        Comment

        • mrwho
          Major Asshole!

          Site Contributor
          2,500+ Posts
          • Apr 2009
          • 4299

          #5
          It usually happens all of a sudden, and it will get worse if not treated. You can try to just clean up the cleaning blade, but it will probably reappear soon since that is a sign the blade is losing its properties.
          ' "But the salesman said . . ." The salesman's an asshole!'
          Mascan42

          'You will always find some Eskimo ready to instruct the Congolese on how to cope with heat waves.'

          Ibid

          I'm just an ex-tech lurking around and spreading disinformation!

          Comment

          • svwpa
            Technician
            • Dec 2010
            • 13

            #6
            Shall I replace the cleaning blade itself ($26) or the whole assembly ($75). Thanks, Mark

            Comment

            • mrwho
              Major Asshole!

              Site Contributor
              2,500+ Posts
              • Apr 2009
              • 4299

              #7
              I never had to replace the whole assembly (the drum assembly), so you only need to do it if it is somehow damaged. Usually only the blade is fine, or, if needed, blade+drum. Sometimes you also need to either repair or replace the charge corona (another part of the drum assembly) but the scan you showed us doesn't suggest that.
              ' "But the salesman said . . ." The salesman's an asshole!'
              Mascan42

              'You will always find some Eskimo ready to instruct the Congolese on how to cope with heat waves.'

              Ibid

              I'm just an ex-tech lurking around and spreading disinformation!

              Comment

              • pepper38_cnd
                Field Service Manager

                Site Contributor
                1,000+ Posts
                • Aug 2005
                • 1075

                #8
                You have a pit mark in the drum causing the cleaning blade to skip, replacing the blade alone will only be a temporary fix. Then when it comes back you will have to replace both the blade and the drum. If you look at the pages you have displayed you will see on both pages an area were there is line crossing the vertical streaks that is where the pit mark is and this is where the blade skips.
                Online Store is closed. Chip resetting is a thing of the past! Thank you to all my past customers.
                Now into Ip TV KODI Boxes

                Comment

                • mrwho
                  Major Asshole!

                  Site Contributor
                  2,500+ Posts
                  • Apr 2009
                  • 4299

                  #9
                  Originally posted by pepper38_cnd
                  You have a pit mark in the drum causing the cleaning blade to skip, replacing the blade alone will only be a temporary fix. Then when it comes back you will have to replace both the blade and the drum. If you look at the pages you have displayed you will see on both pages an area were there is line crossing the vertical streaks that is where the pit mark is and this is where the blade skips.
                  Nice! I missed that one, actually. Good job! Replace both the drum and the blade.
                  ' "But the salesman said . . ." The salesman's an asshole!'
                  Mascan42

                  'You will always find some Eskimo ready to instruct the Congolese on how to cope with heat waves.'

                  Ibid

                  I'm just an ex-tech lurking around and spreading disinformation!

                  Comment

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