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  1. #11
    Service Manager 1,000+ Posts
    xerox 252 not printing cyan anymore

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    Re: xerox 252 not printing cyan anymore

    You don't have already a service manual for this copier ?

  2. #12
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    Re: xerox 252 not printing cyan anymore

    Quote Originally Posted by adriansto View Post
    You don't have already a service manual for this copier ?
    No, unfortunately not.
    the machine was fixed by xerox tech. But no longer since 6 months ago.

  3. #13
    Service Manager 1,000+ Posts
    xerox 252 not printing cyan anymore

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    Re: xerox 252 not printing cyan anymore

    Quote Originally Posted by mpsolutions View Post
    No, unfortunately not.
    the machine was fixed by xerox tech. But no longer since 6 months ago.
    It's time to purchase one and follow the service procedure from there.

  4. #14
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    Re: xerox 252 not printing cyan anymore

    Quote Originally Posted by mpsolutions View Post
    There is no cyan toner on cyan drum.
    i have already changed the cyan drum and the cyan developer housing from another machine.
    so the only thing left to check is the lack of voltage on the developer unit.
    how do I check that?
    Update: the tech was here today, checked all the gears and Mechanics and changed Cyan developer. Now he is sure it's a voltage problem.
    Because the machine prints a rough surface blue on whole sheet.
    According to him, he never encountered this problem, and does not know how to fix it.
    Any ideas?

  5. #15
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    Re: xerox 252 not printing cyan anymore

    Check developer bias contact as on attachment pictures.
    Attached Images Attached Images

  6. #16
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    Re: xerox 252 not printing cyan anymore

    Quote Originally Posted by xcopytech View Post
    Check developer bias contact as on attachment pictures.
    Thank you so much. I will check that 1st thing tomorrow.

  7. #17
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    Re: xerox 252 not printing cyan anymore

    Quote Originally Posted by xcopytech View Post
    Check developer bias contact as on attachment pictures.
    I checked the Bias as per photo, it seems fine. It has to be something else of this nature. Meantime problem persists.
    Please Help!!!

  8. #18
    Senior Tech 250+ Posts InterfaceP's Avatar
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    Wink Re: xerox 252 not printing cyan anymore

    Charge HVPS.jpg

    That other Forum wont let me load photos. It's no wonder more people use this one.

  9. #19
    Service Manager 1,000+ Posts
    xerox 252 not printing cyan anymore

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    Re: xerox 252 not printing cyan anymore

    You need to check voltages on HVPS Developer Bias Pwb = item no. 16
    Measure the bias voltage, on electronic board, for all three colours and compare.
    If you have voltages there then you can change the item no 15 = Charge HVPS.

  10. #20
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    Re: xerox 252 not printing cyan anymore

    image.jpg
    Quote Originally Posted by adriansto View Post
    You need to check voltages on HVPS Developer Bias Pwb = item no. 16
    Measure the bias voltage, on electronic board, for all three colours and compare.
    If you have voltages there then you can change the item no 15 = Charge HVPS.
    Here is a picture to show the rough/sand like cyan print over the sheet. Despite the fact that the printed image is missing cyan. Sometimes the prints are clean but cyan is always missing.
    You dont think there is something else much simpler to think of that could be causing this. Before that we start looking into electronic boards?

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