C250 grinding noise from black developing driving gears

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  • mrwho
    Major Asshole!

    Site Contributor
    2,500+ Posts
    • Apr 2009
    • 4299
    #1

    C250 grinding noise from black developing driving gears

    We've got a C250 which makes a hell of a noise (grinding type) from the gears on the machine driving the black developing unit. We confirmed that it is so because the black developing unit doesn't turn (and the CMY ones do) and the black copies come out almost white since the mag roller doesn't turn.

    The tricky part is that we dismantled the whole machine and we can't find anything wrong. All the wheels look good and I even grabbed the whole unit, assembled it and turned it by hand while giving power to the developing clutch to see if I could reproduce it, but no such luck.

    Anyone got this problem who can lend a hint?

    Cheers!
    ' "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!
    Tags: black, black copies, copies, gears, good, grinding noise, lef, power, roller, type, unit, waste toner, wheels
    • YouthAttack
      Technician
      • Mar 2010
      • 37
      #2
      i had a c250 with a noise coming from the waste toner auger part of the machine. me and a senior tech dismantled it and the customer got a loaner machine because that thing never worked after dismantling it. you sure its just not an imaging unit is hard to turn or something?

        Comment

        • mrwho
          Major Asshole!

          Site Contributor
          2,500+ Posts
          • Apr 2009
          • 4299
          #3
          We're still waiting for parts to check, but it seems like it's some worn out gears at the lower left of the machine (when looking from behind), between the two clutches (the paper feed clutch and the black dev clutch). As soon as we replace them, I'll give some feedback.

          Thanks for the tip!
          ' "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

            • oluwatope333
              Junior Member
              • Dec 2017
              • 9
              #4
              Re: C250 grinding noise from black developing driving gears

              Originally posted by mrwho
              We're still waiting for parts to check, but it seems like it's some worn out gears at the lower left of the machine (when looking from behind), between the two clutches (the paper feed clutch and the black dev clutch). As soon as we replace them, I'll give some feedback.

              Thanks for the tip!
              Your feedback will be of great help to me now! thanks

                Comment

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