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  1. #11
    Master Of The Obvious 10,000+ Posts
    Bizhub C258 artefacts, strange lines on printouts

    blackcat4866's Avatar
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    Re: Bizhub C258 artefacts, strange lines on printouts

    How about internal prints, like the management list or configuration page? Do you get any of the original image?

    If you emergency stop the machine mid-print, is there a properly developed latent image on the belt? I'm thinking probably not. Is there a properly developed latent image on the black drum? If yes, perhaps there is a primary transfer charge issue.

    Can you cheat the waste bottle sensors, and see if the black drum is rotating? If the black developer or drum were not rotating you might get an image like this. Or if the laser was not writing the image ... but you've replaced the laser.

    Just speculating. Maybe this will start you in another direction. =^..^=
    If you'd like a serious answer to your request:
    1) demonstrate that you've read the manual
    2) demonstrate that you made some attempt to fix it.
    3) if you're going to ask about jams include the jam code.
    4) if you're going to ask about an error code include the error code.
    5) You are the person onsite. Only you can make observations.

    blackcat: Master Of The Obvious =^..^=

  2. #12
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    Re: Bizhub C258 artefacts, strange lines on printouts

    Quote Originally Posted by blackcat4866 View Post
    How about internal prints, like the management list or configuration page? Do you get any of the original image?

    If you emergency stop the machine mid-print, is there a properly developed latent image on the belt? I'm thinking probably not. Is there a properly developed latent image on the black drum? If yes, perhaps there is a primary transfer charge issue.

    Can you cheat the waste bottle sensors, and see if the black drum is rotating? If the black developer or drum were not rotating you might get an image like this. Or if the laser was not writing the image ... but you've replaced the laser.

    Just speculating. Maybe this will start you in another direction. =^..^=
    Many many thanks for your advices. I will try these steps and will be back with results

  3. #13
    Service Manager 5,000+ Posts tsbservice's Avatar
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    Re: Bizhub C258 artefacts, strange lines on printouts

    Change black drum with new. Your Vpp voltages are trown off. That's why you put another used but good working drum change nothing. New drum with new chip will register correct voltages especially Vpp which in your case may be under 1000, see table 1 those values mean something
    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.

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  4. #14
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    Re: Bizhub C258 artefacts, strange lines on printouts

    Quote Originally Posted by tsbservice View Post
    Change black drum with new. Your Vpp voltages are trown off. That's why you put another used but good working drum change nothing. New drum with new chip will register correct voltages especially Vpp which in your case may be under 1000, see table 1 those values mean something
    All Vpps are above 1000

  5. #15
    Service Manager 5,000+ Posts tsbservice's Avatar
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    Re: Bizhub C258 artefacts, strange lines on printouts

    Quote Originally Posted by Takhnamishvili View Post
    All Vpps are above 1000
    How much above? Post screenshots.
    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.

    I don't reply to private messages from end users.

  6. #16
    Service Manager 1,000+ Posts
    Bizhub C258 artefacts, strange lines on printouts

    FrohnB's Avatar
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    Re: Bizhub C258 artefacts, strange lines on printouts

    Have you tried a different Transfer roller?
    Omertà

  7. #17
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    Re: Bizhub C258 artefacts, strange lines on printouts

    Guys, I solved this issue by increasing Vpp-K value. Image became perfect. Thank to all of you and especially to tsbservice! Solution is temporary, customer will change black drum with new one after few days.

  8. #18
    Service Manager 5,000+ Posts tsbservice's Avatar
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    Re: Bizhub C258 artefacts, strange lines on printouts

    Quote Originally Posted by Takhnamishvili View Post
    Guys, I solved this issue by increasing Vpp-K value. Image became perfect. Thank to all of you and especially to tsbservice! Solution is temporary, customer will change black drum with new one after few days.
    Glad you sorted it.
    Actually those guys who advice to change black drum save the day
    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.

    I don't reply to private messages from end users.

  9. #19
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    Re: Bizhub C258 artefacts, strange lines on printouts

    Quote Originally Posted by tsbservice View Post
    Glad you sorted it.
    Actually those guys who advice to change black drum save the day
    Yep, black drum failed, as guys mentioned and advised to change it. But I learned how to solve it temporary, earlier I have never touched Vpp values, did not know anything about them😁

  10. #20
    Service Manager 1,000+ Posts Gift's Avatar
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    Re: Bizhub C258 artefacts, strange lines on printouts

    Quote Originally Posted by tsbservice View Post
    Glad you sorted it.
    Actually those guys who advice to change black drum save the day
    Still interesting, I never really fiddled round with KM voltages, too so I'll keep that one in mind and thx for that hint.

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