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  1. #1
    Senior Tech 100+ Posts
    C450i DF713 Z-folding originals


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    C450i DF713 Z-folding originals

    working on a Konica C450i with DF713.. paper passes .. but consistently Z folding the originals.. paper crunching sounds..until it jams.. mostly J66-14.. or 66-05...


    Feed tires good..blew out all dusty sensors..cleaned out all staples and paper clips..all mylars OK..spun the DF motors in Load Check.. all seem smooth..


    its like its over-driving .. or getting hung up/slowed down.. causing accordian jam of originals.
    took rear cover off..dont see any one-ways in the DF drive section


    I read about cleaning PS4....In the service manual ..PS4 is a Solid state Switch.. not a Photo-Interrupter.. how/what switches a solid state switch?

    can not find any bulletins on DF Z-folding on the Doc Feeders on Konica SSD site

    i gave up.. DF still jamming..
    Last edited by bronco31; 03-31-2022 at 06:48 AM.

  2. #2
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    Re: C450i DF713 Z-folding originals

    my guess for solid state switch is if there is a certain voltage supplied to the solid state switch, then the switch will change condition. like a electric relay.

    for ex: at normal condition/ no voltage is supplied, the electric relay is NO (normally open). When a voltage is supplied, the electric relay change to Close position.

    hope this help

  3. #3
    Service Manager 1,000+ Posts kingarthur's Avatar
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    Re: C450i DF713 Z-folding originals

    I've had 2 recurring issues on these RADFs

    1st check that p/no A782711901 is in place, the spring on one side pops off and that "lever" then sits flat

    2nd A782890111 which sits underneath the feed tray, one side or the other pops out...absolutely no idea how, and this has caused misfeeding...I've even had originals shoot out of the RADF when it isn't in place properly
    Tip for the day; Treat every problem as your dog would.....If you cant eat it or f*ck it....then p*ss on it & walk away...

  4. #4
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    Re: C450i DF713 Z-folding originals

    did you try manually pushing a heavy stock original through the path?

  5. #5
    Senior Tech 100+ Posts
    C450i DF713 Z-folding originals


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    Re: C450i DF713 Z-folding originals

    ok Thank you..will look at both A782711901 and A782890111 .. yes i first fed a cardstock thru... got staples and 1 paper clip out.. thought the call was done.. nope!

  6. #6
    Senior Tech 100+ Posts
    C450i DF713 Z-folding originals


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    Re: C450i DF713 Z-folding originals

    Fixed.. (it took another techs eyeballs and superbright LED) Amazingly...a paperclip worked its way past the rear cover , into the rear drive section.. and got caught and stretched around an intermediate exit drive shaft slowing it down enough to cause accordion jams



  7. #7
    Service Manager 1,000+ Posts Gift's Avatar
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    Re: C450i DF713 Z-folding originals

    Quote Originally Posted by bronco31 View Post
    Fixed.. (it took another techs eyeballs and superbright LED) Amazingly...a paperclip worked its way past the rear cover , into the rear drive section.. and got caught and stretched around an intermediate exit drive shaft slowing it down enough to cause accordion jams


    Nice one ...and a nice bill for the customer probably

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