KM 420-501 why do they puke toner and developer?

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  • JR2ALTA
    Service Manager

    Site Contributor
    1,000+ Posts
    • Feb 2010
    • 2017
    #1

    KM 420-501 why do they puke toner and developer?

    I can see a KM 500 that hasn't been serviced in two years and it's clean as a whistle.

    Others constantly puke out toner and developer, getting all over clutches, T&S units and even into the cassettes.

    I know the soft drum pads fall apart, I know recycled toner can back up in the IU and the blades aren't great.

    But even after addressing these issues I still get crap all over.


    Kinda like the 600-750 dumping.

    Thoughts?
    Tags: 420, 500, 600, 750, back, developer, drum, dumping, puke, toner, units
    • PeterG
      Trusted Tech

      100+ Posts
      • Jul 2008
      • 177
      #2
      Re: KM 420-501 why do they puke toner and developer?

      KM 420-501 why do they puke toner and developer?

      Because we think we won the war!!

        Comment

        • EarthKmTech
          Step aside, noob

          1,000+ Posts
          • May 2009
          • 2142
          #3
          Re: KM 420-501 why do they puke toner and developer?

          #1 cause is shit paper

          incorrect setup will do it too.

          it suffers in exactly the same manner as a b601/751.

            Comment

            • CraigW
              Trusted Tech

              Site Contributor
              250+ Posts
              • Dec 2010
              • 417
              #4
              Re: KM 420-501 why do they puke toner and developer?

              I see a lot of misting on these.... but none pulling developer. And of course they did away with the T/S cleaner on these (not that anyone would use it)

                Comment

                • DadO
                  Trusted Tech

                  Site Contributor
                  250+ Posts
                  • Dec 2007
                  • 401
                  #5
                  Re: KM 420-501 why do they puke toner and developer?

                  Well every time i do pm on 400/421/500/501 I see toner build up on mylarian strip that protects developin roller.
                  I saw it on new machines whit 20 K so don't think its related whit how much copy it did. From there it goes evrywhere
                  Dont know why but someone suggested that on this forum that adjustment of "Toner density adjustment" should fix the problem. In my case it didn't help. Mybe in urs will.

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