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  1. #1
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    DC242 over toning on black

    Hi.

    My dc242 is leaving a slight scattering of black toner over the entire sheet of paper- its so slight that when I scan the image its not picked up but if you hold the sheet next to a unprinted sheet you can see the difference.

    The black drum is recent (82% remaining) , the black dev is recent (within 20k pages), I have checked the values for toner density and according to the service manual they are well within tolerance, the ATC sensor values look correct.

    Any idea where I go from here?

    Thanks
    CHris

  2. #2
    Senior Tech 250+ Posts InterfaceP's Avatar
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    Re: DC242 over toning on black

    Probably the K BIAS PWB. Its located on the left side under the panel where the UI attaches.

  3. #3
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    Re: DC242 over toning on black

    Quote Originally Posted by InterfaceP View Post
    Probably the K BIAS PWB. Its located on the left side under the panel where the UI attaches.
    Thanks. Where in the service manual does it refer to this? Nothing comes up when searching for it.

    Cheers

  4. #4
    Senior Tech 250+ Posts InterfaceP's Avatar
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    Re: DC242 over toning on black

    Quote Originally Posted by chrisio View Post
    Thanks. Where in the service manual does it refer to this? Nothing comes up when searching for it.

    Cheers
    PL 11.2 Item 2

  5. #5
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    Re: DC242 over toning on black

    Thanks.

    Is this the board https://www.iteminconline.com/105k20...loper-bias.htm

    Is there any tests I can do or is it a case of swap it out and hope its correct.

  6. #6
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    Re: DC242 over toning on black

    I have the new board coming in the next day or so. Is it just a case of swapping the board and all my troubles will be resolved ir do I need to set it up?


    Thanks
    Chris

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