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  1. #1
    Master Of The Obvious 10,000+ Posts
    bizhub C3351 J11-02

    blackcat4866's Avatar
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    Jul 2007
    Lapeer, Michigan
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    bizhub C3351 J11-02

    The best part: It only jams in the bottom 1/3 of the tray!

    Please try to excuse my Paint illustrations.
    When the tray is full it feeds fine. As the paper is consumed the paper lifts, and the paper stack parallelograms ... so by the time the last 1/3 remains, the paper is just barely reaching the attached pickup roller. I discovered this by manually lifting the 1/3 full tray outside the machine.

    There is an overly complex mechanism in the endstop to kick the paper forward as the pickup roller as the lift plate raises. This one wasn't working because the nub at the end of the plastic shaft had snapped off, and the pressure spring gone.


    The spring was easy enough to come by: ~5mm dia coils x 27mm long (I didn't think to measure the other spring in tray #2 until after it was fixed). The simple way to retain the spring was to drill a #67 hole through the plastic shaft and curl a piece of paperclip wire through it. Here's what it's supposed to do:

    Linkage Underside of Tray.jpgEndstop.jpg

    Could they have made that endstop mechanism any more complex?
    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 =^..^=

  2. #2
    Trusted Tech 50+ Posts
    Join Date
    Aug 2014
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    Re: bizhub C3351 J11-02

    This was a big issue when these machines were first released, KM modified the backstop and springs

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