MX-4501N pulling black dv ???

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  • CCS
    Trusted Tech

    Site Contributor
    250+ Posts
    • Feb 2008
    • 266
    #1

    MX-4501N pulling black dv ???

    What do you think about a 4501n that is sucking out all the black dv every 2-weeks ?

    Have already swapped the following from a known good working machine :

    Black dv unit, new dv & toner,
    Black dr unit and charge unit,
    Large transfer belt assy.,

    Machine is still pulling dv

    Anyone got any suggestions, thanks
    Tags: None
    • igi
      Service Manager

      1,000+ Posts
      • Apr 2009
      • 1507
      #2
      Re: MX-4501N pulling black dv ???

      Symptom: Copy became pale in B&W after approximate 50~100k due to the black developer loss. If replace the black developer only, the trouble comes back very quickly.

      Cause: The rear side of MC grid became contaminated by the toner dust from black Dev unit.

      Temporary measures:
      1. Clean the MC grid within the drum unit.
      2. Refer to the attached procedures to affix the DV seal upper (PSEL-0966FCZ1) onto the black DV unit cover upper. 3. Replace the black developer.

        Comment

        • Akitu
          Legendary Frost Spec Tech

          Site Contributor
          2,500+ Posts
          • Oct 2010
          • 2595
          #3
          Re: MX-4501N pulling black dv ???

          How many copies were on the used drum that was inserted? There's a chance it could still be the drum. Better to put in new/rebuilt parts than taking one directly from another machine, then perform the full colour calibration and see what your results are. Go to sim 44-28 and set "I" to "1" to cut down on your black process control too...
          Cthulhu for president! Why settle for the lesser evil?

            Comment

            • JustManuals
              Field Supervisor

              5,000+ Posts
              • Jan 2006
              • 9838
              #4
              Re: MX-4501N pulling black dv ???

              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

                • glewisme
                  Trusted Tech

                  100+ Posts
                  • Nov 2009
                  • 240
                  #5
                  Re: MX-4501N pulling black dv ???

                  Verify that the machine has the new process electrode cover. I've seen it pull developer eventually it will give you a toner abnormality sensor code! Sharp Bulliten # MFP-TB-323R
                  This Bulletin Supercedes MFP-TB-323
                   Hope this helps worked on three machine for us!!

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