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  1. #1
    Service Manager 5,000+ Posts
    C280 Cassette Shows Shows ???

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    C280 Cassette Shows Shows ???

    Got a C280 that intermittently shows both tray paper sizes as ???, in other words it cant detect the cassette side & back positions. The sensor arms at the rear don't look bent or damaged.

    Open & closing the cassettes, or moving the guides in & out usually sorts out the problem, but is there a way to disable the "Auto Size Detection"? seems like that can only been down for the stack bypass?

  2. #2
    Service Manager 5,000+ Posts
    C280 Cassette Shows Shows ???


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    Lightbulb Re: C280 Cassette Shows Shows ???

    This Parts & Service Manual can now be purchased for $12.77 and downloaded immediately after payment from:


    http://www.justmanuals.com


    Paul@justmanuals.com

  3. #3
    Step aside, noob 1,000+ Posts EarthKmTech's Avatar
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    Re: C280 Cassette Shows Shows ???

    you can not force paper sizes in these trays.

    ensure the rear most metal paper guide is not bent back and is straight up - if it bends back the protruding shaft will not operate the two photo interuptors correctly in the black plastic spring loaded housing - also make sure they have not been smashed out of the housing. ( i bet one has)

    for both trays to have ??? i bet a wad of paper has gone behind both trays and some genius has tried slamming the draws closed - I had this very issue monday morning first thing, in a school of all places.. Big surprise really, not.

  4. #4
    Field Supervisor 500+ Posts
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    Re: C280 Cassette Shows Shows ???

    There is a plastic block that protruding bar slots into on the rear of the machine. These crack and cause this fault....

    oops sorry earthkmtech didn't see you already said this.
    but as you say, one of these is definitely broken

  5. #5
    Service Manager 5,000+ Posts
    C280 Cassette Shows Shows ???

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    Re: C280 Cassette Shows Shows ???

    I did look at the block in the back of the m/c looked ok but was in a dark room!
    How easy is that to replace? Might order one & keep in the van

  6. #6
    Step aside, noob 1,000+ Posts EarthKmTech's Avatar
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    Re: C280 Cassette Shows Shows ???

    not hard to change, aslong as your able to get into the barking dog position on all 4's.

    I do it from the front of the machine by removing both trays, unscrewing the tray detection assembly with all the switches etc and gently rotating it to gain access.

  7. #7
    Senior Tech 100+ Posts PeterG's Avatar
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    Re: C280 Cassette Shows Shows ???

    We colonials are a little more "agricultural". Slide the tray all the way out, & bend the rear paper guide toward the front, a couple of mm's.
    Have done it to dozens of machines. Have never had to go back again.

  8. #8
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    Re: C280 Cassette Shows Shows ???

    Quote Originally Posted by PeterG View Post
    We colonials are a little more "agricultural". Slide the tray all the way out, & bend the rear paper guide toward the front, a couple of mm's.
    Have done it to dozens of machines. Have never had to go back again.
    Yes this does work but once that block has broken it will have to be replaced....
    We have found though that a little grease on the part of the cassette that hits the feed roller actuator makes the trays locate really smoothly, which stops a lot of damage. We have found that if the customers don't have to slam the trays in, bits don't get broken as much!!!!

  9. #9
    Senior Tech 100+ Posts PeterG's Avatar
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    Re: C280 Cassette Shows Shows ???

    Quote Originally Posted by tech51 View Post
    Yes this does work but once that block has broken it will have to be replaced....
    We have found though that a little grease on the part of the cassette that hits the feed roller actuator makes the trays locate really smoothly, which stops a lot of damage. We have found that if the customers don't have to slam the trays in, bits don't get broken as much!!!!
    Absolutely agree with this.

  10. #10
    Senior Tech 250+ Posts Phrag's Avatar
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    Re: C280 Cassette Shows Shows ???

    We have found that if the customers don't have to slam the trays in, bits don't get broken as much!!!!
    The only time I've had this issue with the broken plastic housing is deep inside the processing areas out at an alumina refinery. You can't tell those blokes to be gentle. They're all engineers, and process operators. That's against their ROE regarding sensitive office machinery.

    The fun part was wearing black slacks and getting on all fours in a cramped cupboard kneeling in bauxite dust. At least I looked like I was working really hard.

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