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Thread: Black line C258

  1. #11
    RTFM!! 2,500+ Posts allan's Avatar
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    Re: Black line C258

    Quote Originally Posted by darry1322 View Post
    I replaced a C308 black drum last week for a similar problem. Drum surface looked beautiful, but the new drum cleared it right up.

    Something on the charge roller?

    If that is the case i will have a wack at cleaning it.
    Whatever

  2. #12
    Field Supervisor 500+ Posts
    Black line C258


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    Re: Black line C258

    Quote Originally Posted by allan View Post
    Something on the charge roller?

    If that is the case i will have a wack at cleaning it.

    Charge roller was clean and pristine as well.

  3. #13
    Field Supervisor 500+ Posts tsbservice's Avatar
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    Re: Black line C258

    Quote Originally Posted by tech51 View Post
    My experience is that these drums are highly unpredictable.

    Iíve had them fail at at 50% life before now yet some go past life, go figure!

    We are starting to use the long life drums that are available now but itís to early to tell how much of an improvement they are.
    I can't pretend to be KM expert by any means, and seems from what I have read that you knowing Bizhubs to the bones. Luckily, I had no premature wear on 8 series drums but that issue is known to me and sharing your experience on new long life drums will be nice.
    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.

  4. #14
    RTFM!! 2,500+ Posts allan's Avatar
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    Re: Black line C258

    Quote Originally Posted by darry1322 View Post
    Charge roller was clean and pristine as well.
    Mag roller?


    Bix it looks like there could be a repeating pattern were the line goes from fat to thin on that sample can you get a measurement of that?
    Whatever

  5. #15
    Senior Tech 250+ Posts Bix's Avatar
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    Re: Black line C258

    Heck, I've forgotten patterns. Indeed they could tighten for the solution of the problem.


    I will try with the replacement of the K drum. I have many series 8 and the drum has always almost respected his life. This could be one of the first cases. In any case, the printer at 2 years then the drum could be aged (?) I keep you updated

    Switch from thin to thick and vice versa between 5-10 pages

  6. #16
    Field Supervisor 500+ Posts
    Black line C258


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    Re: Black line C258

    Quote Originally Posted by allan View Post
    Mag roller?

    Mag roller on mine was great.
    At first I checked the fuser. All good there.
    Then I checked the drum. Looks good.
    Finally pulled the dev unit. Perfect.
    Since it looked like a drum issue I just replaced the drum and went back to great copies.

    Bix may have a different issue. I'm simply saying that a drum or charge roller may look great but still be bad.

  7. #17
    Master Of The Obvious 10,000+ Posts
    Black line C258

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    Re: Black line C258

    Quote Originally Posted by allan View Post
    Something on the charge roller?

    If that is the case i will have a wack at cleaning it.
    Did you see the repetitive defect at ~24mm? Jip, primary charge. But don't try to clean it. It will get a lot worse. =^..^=
    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 =^..^=

  8. #18
    Senior Tech 250+ Posts Bix's Avatar
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    Re: Black line C258

    Hi, here's an update.


    Today I replaced it with a black drum.


    Unfortunately it didn't solve the problem. I did the patterns printing and the line appears in all colors.


    I pulled the strap out, it looks good but manually turning I noticed that it leaves a slight strip. In fact, after making it turn manually, I made 5-10 prints and the line did not appear, only to appear again.


    Maybe there's something inside the belt cleaning blade. I will try to replace it. What do you think?as1.jpgas2.jpg

  9. #19
    Senior Tech 250+ Posts Bix's Avatar
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    Re: Black line C258

    Solved

    Cleaning blade did not clean at one point. There was a small groove in the transfer belt. replaced

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