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  1. #1
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    Minolta C458 paperjam 9901

    Hi guys, I have a problem on a C458, on tray 1 after some printing the machine jams with code 9901 and an error related to the paper size not recognized. .
    The machine has 100,000 copies.
    If i use tray not have problem.
    I have already tried to replace the paper pick-up rollers,clutch and torque the problem persists.
    Do you have any suggestions?
    Thank you very much!

  2. #2
    Service Manager 10,000+ Posts
    Minolta C458 paperjam 9901

    Phil B.'s Avatar
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    Re: Minolta C458 paperjam 9901

    Quote Originally Posted by furius View Post
    Hi guys, I have a problem on a C458, on tray 1 after some printing the machine jams with code 9901 and an error related to the paper size not recognized. .
    The machine has 100,000 copies.
    If i use tray not have problem.
    I have already tried to replace the paper pick-up rollers,clutch and torque the problem persists.
    Do you have any suggestions?
    Thank you very much!



    why the EXTRA large font?

    doesn't make it more important

    are the size n type of media set properly in File and copier?

    what paper are you trying to print on?

    age on service parts?

    coated or plain?

    you don't give us much to work with

  3. #3
    Service Manager 1,000+ Posts Bix's Avatar
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    Re: Minolta C458 paperjam 9901

    Hi, in what sense is the paper size not recognized?
    When you try to go to the copy window, what appears to you about Tray 1? is the correct size or have the tray settings been changed?


    If it appears "???" make sure there is no jammed paper in the back of the tray. If there is not even paper, make sure that the plastic pieces in the back of the tray that identified the paper size have not broken.

  4. #4
    Service Manager 5,000+ Posts
    Minolta C458 paperjam 9901

    copier tech's Avatar
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    Re: Minolta C458 paperjam 9901

    Quote Originally Posted by furius View Post
    Hi guys, I have a problem on a C458, on tray 1 after some printing the machine jams with code 9901 and an error related to the paper size not recognized. .
    The machine has 100,000 copies.
    If i use tray not have problem.
    I have already tried to replace the paper pick-up rollers,clutch and torque the problem persists.
    Do you have any suggestions?
    Thank you very much!
    Try changing SW145 set HEX to 02 this will display a size mismatch but not a jam.
    Let us eat, drink, and be merry, because tomorrow we may die!

    For all your firmware & service manual needs please visit us at:

    www.copierfirmware.co.uk - www.printerfirmware.co.uk




  5. #5
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    Re: Minolta C458 paperjam 9901

    Hi guys,

    I have this problem on 2 C458 and i solved it with changing registration sensore and clutch registration

  6. #6
    Senior Tech 250+ Posts
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    Re: Minolta C458 paperjam 9901

    What clutch and what registration sensor??

    Sent from my SM-N981U using Tapatalk

  7. #7
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    Re: Minolta C458 paperjam 9901

    Quote Originally Posted by antone View Post
    What clutch and what registration sensor??

    Sent from my SM-N981U using Tapatalk

    PS1&CL4.jpg

  8. #8
    Senior Tech 250+ Posts
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    Re: Minolta C458 paperjam 9901

    9901 - just thinking of previous models especially out the bottom trays the conveyancing rollers at the side would slip and you'd get 9901. Some engineers used to add shims to the hooks to apply more pressure. If it doesn't do it from tray 1 the machine is probably just struggling with the paper well in terms of moving it up the vertical feed before the registration or could be as daft as the spring has fell off the registration sensor.

  9. #9
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    Re: Minolta C458 paperjam 9901

    Quote Originally Posted by jalaoly View Post
    I had one C458 with same problem, i increased the tension of spring of the PS1 sensor that you have changed.

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