L4-08 on a MX-M623N that is also making a clicking sound!

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  • Sturge75
    • Jun 2025

    #1

    [Error Code] L4-08 on a MX-M623N that is also making a clicking sound!

    L4-08 code on a MX-M623N that is also making a clicking sound after resetting the machine. I have checked everything and cleaned the toner out of the tube but it isn't fixing the problem. I've dealt with the code before and fixed it but the clicking sound is new.
  • bilyahn
    Service Manager

    1,000+ Posts
    • Dec 2006
    • 1470

    #2
    Re: L4-08 on a MX-M623N that is also making a clicking sound!

    Clicking noise is probably from your fusing unit. Have had several of these do it. We even have a rebuilt one with less than 100 prints on it clicking! Very annoying. Test the FUM in sim 6 to see if this is what is causing your noise.

    Good luck

    Bil

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    • rainmaker
      Technician

      50+ Posts
      • Jul 2011
      • 77

      #3
      Re: L4-08 on a MX-M623N that is also making a clicking sound!

      Had this code.I replaced the main drive unit,there is a toner waste detect sensor in the unit.Didnt have the clicking noise,I pulled the process unit out and the gears were smooth.Replaced the main drive havent had any problems...good luck

      Comment

      • blackcat4866
        Master Of The Obvious

        Site Contributor
        10,000+ Posts
        • Jul 2007
        • 22999

        #4
        Re: L4-08 on a MX-M623N that is also making a clicking sound!

        The best way to address any noise is to run each motor individually. Sharp doesn't make that terribly easy, since the sims are spread out throughout the service mode, not like Kyocera that groups them under U030 for the base machine and U240 for the finisher. =^..^=
        If you'd like a serious answer to your request:
        1) demonstrate that you've read the manual
        2) demonstrate that you made some attempt to fix it.
        3) if you're going to ask about jams include the jam code.
        4) if you're going to ask about an error code include the error code.
        5) You are the person onsite. Only you can make observations.

        blackcat: Master Of The Obvious =^..^=

        Comment

        • mommok
          Technician
          • Jul 2014
          • 48

          #5
          Re: L4-08 on a MX-M623N that is also making a clicking sound!

          I have had this issue. After rebuilding the process unit get the same code, fixed usualy by reopening the processunit and make sure drum is not in a bind. The clicking i have encountered come from the gears at the rear of the process unt that turn the cleaning roller. When replacing the cleaning roller sometines the bushing slides out place. Reseating the bushing and ensuri g the gear is on fully clears the clicking noise.

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