Canon IR 4235 42XX help to identify noise from machine

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  • maxcopiers
    Technician
    • Dec 2019
    • 15

    Canon IR 4235 42XX help to identify noise from machine

    when the right door is opened and closed, i hear the noise making 8-9 rotations rapidly. the noise rotations occur almost in sync with the Reversal Motor, starts and ends a second before. Running just the Reversal Motor does not making the noise unfortunately. i have tried running all the motors individually in service mode using MTR-ON, but cannot hear same sound as when right door open and close. any help, thank you.

    Noise occurs after shutting right door. 3 seconds into video, 8-9 rapid rotations, lasting 1-2 seconds.

    Video

    Noise also occurs during copying. Near end of video (@15 sec) for one second, noise makes 4-5 rotations.

    Video

    Last edited by maxcopiers; 03-19-2020, 06:39 PM. Reason: added imgur link
  • MunsterTech
    Trusted Tech

    Site Contributor
    250+ Posts
    • Sep 2014
    • 376

    #2
    Re: Canon IR 4235 42XX help to identify noise from machine

    check the life of the fuser, only noise ive seen on these models is the fuser main going

    Comment

    • maxcopiers
      Technician
      • Dec 2019
      • 15

      #3
      Re: Canon IR 4235 42XX help to identify noise from machine

      Originally posted by MunsterTech
      check the life of the fuser, only noise ive seen on these models is the fuser main going
      The fuser was replaced with one from another machine, but the noise happens still.
      The inner finisher D1 was disconnected, but the noise still happens.

      Comment

      • maxcopiers
        Technician
        • Dec 2019
        • 15

        #4
        Re: Canon IR 4235 42XX help to identify noise from machine

        The problem turned out to be a bad clutch. The clutch was replaced and the sound is now gone.

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