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  1. #1
    Senior Tech 250+ Posts
    Bizhub 423 Tray 1 jam


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    Bizhub 423 Tray 1 jam

    Paper is jamming before reaching the transport unit (feed out of the tray 1").
    Tray 2 feeds fine.
    New OEM rollers
    New feed clutch
    Adjust loop
    Can't see anything wrong with guides etc
    I have the manual

    Any idea?
    Thanks

  2. #2
    RTFM!! 2,500+ Posts allan's Avatar
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    Re: Bizhub 423 Tray 1 jam

    If you replaced the feed unit with one from a 363 or 223 then you are missing the additional sensor used by the 423 that would be present on the unit.
    The units without the reflective sensor will have yellow wiring and 3 unused pins on the connector.
    The one for the 423 will have grey or purple wiring and all the pins on the connector are in use.
    Whatever

  3. #3
    Senior Tech 250+ Posts
    Bizhub 423 Tray 1 jam


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    Re: Bizhub 423 Tray 1 jam

    Quote Originally Posted by allan View Post
    If you replaced the feed unit with one from a 363 or 223 then you are missing the additional sensor used by the 423 that would be present on the unit.
    The units without the reflective sensor will have yellow wiring and 3 unused pins on the connector.
    The one for the 423 will have grey or purple wiring and all the pins on the connector are in use.

    This tray is original on the copier, it worked fine before.

  4. #4
    Certified Konica Expert 2,500+ Posts
    Bizhub 423 Tray 1 jam

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    Re: Bizhub 423 Tray 1 jam

    Everything he just said plus scuff the shafts and clean out the one way black bearings.
    We know a thing or two because we've seen a thing or two.

  5. #5
    Service Manager 2,500+ Posts tsbservice's Avatar
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    Re: Bizhub 423 Tray 1 jam

    Two wise man spoken, this time my vote going with second
    A tree is known by its fruit, a man by his deeds. A good deed is never lost, he who sows courtesy, reaps friendship, and he who plants kindness gathers love.

    Blessed are they who can laugh at themselves, for they shall never cease to be amused.

  6. #6
    RTFM!! 2,500+ Posts allan's Avatar
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    Re: Bizhub 423 Tray 1 jam

    What is the jam code?

    J-1101?
    J-2002?
    J-3003?

    The meter count on the box?

    Had it where the clutches can pull a paper coming from a lower tray but not if it needs to pull it from around a curve.
    Whatever

  7. #7
    Technician elmaligno's Avatar
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    Re: Bizhub 423 Tray 1 jam

    Quote Originally Posted by gideon View Post
    Paper is jamming before reaching the transport unit (feed out of the tray 1").
    Tray 2 feeds fine.
    New OEM rollers
    New feed clutch
    Adjust loop
    Can't see anything wrong with guides etc
    I have the manual

    Any idea?
    Thanks
    You have the problem at the registration roller. Problably you have J3003. This roller/clutch pulls the sheet by his own only when it is feeded from tray 1. For the other trays, the sheet is helped to rise up to the registration with the others vertical rollers.

  8. #8
    Senior Tech 250+ Posts
    Bizhub 423 Tray 1 jam


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    Re: Bizhub 423 Tray 1 jam

    Quote Originally Posted by allan View Post
    What is the jam code?

    J-1101?
    J-2002?
    J-3003?

    The meter count on the box?

    Had it where the clutches can pull a paper coming from a lower tray but not if it needs to pull it from around a curve.

    Jam is 11-01 copier has 325k
    The gear clutches are lubed, paper leading edge is jamming about 1/4" pass the clear guide, it can be pull out with ease. There is no obstruction on the guide nor dent on the leading edge.
    Thanks for your input.

  9. #9
    Service Manager 2,500+ Posts
    Bizhub 423 Tray 1 jam


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    Re: Bizhub 423 Tray 1 jam

    Ive had this before and killed me. Tray 2 feeds fine, tray 1 paper stops exact same place everytime.

    Fix: Remove the transfer roller unit and when you put it back in make sure the clear guide is behind the reg rollers. I never do this but I'm 100% sure this is your problem.

  10. #10
    Senior Tech 250+ Posts
    Bizhub 423 Tray 1 jam


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    Re: Bizhub 423 Tray 1 jam

    Quote Originally Posted by copyman View Post
    Ive had this before and killed me. Tray 2 feeds fine, tray 1 paper stops exact same place everytime.

    Fix: Remove the transfer roller unit and when you put it back in make sure the clear guide is behind the reg rollers. I never do this but I'm 100% sure this is your problem.

    I'll check it out, thanks.

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