MX-FN11 stapler fires continuously, then jams up

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  • yurisan
    Trusted Tech

    100+ Posts
    • Dec 2007
    • 113

    #1

    MX-FN11 stapler fires continuously, then jams up

    Been trying to put into service a Sharp MX-FN11 finisher on a MX-M363N (off-lease w/ 118K). It had no staples in the cartridge, so loaded up w/ fresh pack of AR-SC2 staples, and the sucker fires continuously until the staples are all jammed up. Seems to be pre-forming the front 2 staples properly, like they do, but damned thing won't stop and simply keeps firing/stapling until 5 or 6 staples get jammed up and mangled behind the front cover of the little plastic staple cartridge. It is as if it is getting a continous signal to fire the stapler. Doesn't behave this way in simulation mode 03-03. Maybe the last owner/servicer of this beast gave up on fixing this and emptied the staple cartridge intentionally. By the way,
    once you are in sim. mode, e.g. 03-03 to test finisher mechanical components, the stapler stops firing, and you can actuate in manually one cycle at a time. We can all thank Canon for these lovely finishers.
  • PrintToPDF
    Technician
    • Oct 2015
    • 27

    #2
    Re: MX-FN11 stapler fires continuously, then jams up

    Try replacing the staple cartridge unti.

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    • yurisan
      Trusted Tech

      100+ Posts
      • Dec 2007
      • 113

      #3
      Re: MX-FN11 stapler fires continuously, then jams up

      Here's my update: from the Sharp Service Manual "The staple edge sensor (FSTD) is used to find out whether a staplehas been edged out to the end of the cartridge" Guess what? Seems to exist, but I couldn't identify it on the stapler unit, and it is NOT one the sensors you can verify in Sim. 03-03. Sharp obviously wants me to send them $359.20 for a new stapler assembly.

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      • walterman
        Trusted Tech

        Site Contributor
        100+ Posts
        • May 2013
        • 196

        #4
        Re: MX-FN11 stapler fires continuously, then jams up

        I used to have this problem on the old AR-F15 units, I used to replace flat cable staple connector assembly, that connected to the stapler pcb and the stapler motor, for the same issue. You could try changing the cable staple connector assembly ( ocw4146q518//) to see if that resolves the issue, before you replace the entire staple unit.



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