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  1. #1
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    Vertical black lines..

    Hello all,
    i have a UTAX 5555i (its the same as a Kyocera 5501i) giving vertical black lines randomly when printing.
    it has just over 1.8M on it and has recently had a new maintenance kit installed.
    Pic below,
    IMG_20191110_093423.jpg

    Ive cleaned the contacts and tried a new charge and drum. the machine could print 200 pages without issue but then put lines on the next 10 pages then disappear again.
    i suspect the high voltage power supply is causing the issue but wanted to ask in here to see if anyone one else has had a similar issue?

    thanks,
    mick

  2. #2
    Master Of The Obvious 10,000+ Posts
    Vertical black lines..

    blackcat4866's Avatar
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    Re: Vertical black lines..

    It looks like primary charge loss to me. See how the anomalous lines cross the edge voids? Not the laser. Is the interval 37.5mm? =^..^=
    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 =^..^=

  3. #3
    Senior Tech 100+ Posts Ropariva's Avatar
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    Re: Vertical black lines..

    Check the drum earth. Plastic tab removed before fitting?

  4. #4
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    Re: Vertical black lines..

    Quote Originally Posted by blackcat4866 View Post
    It looks like primary charge loss to me. See how the anomalous lines cross the edge voids? Not the laser. Is the interval 37.5mm? =^..^=
    Depending on where I measure from the lines are between 40 and 45mm apart.

  5. #5
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    Re: Vertical black lines..

    Quote Originally Posted by Ropariva View Post
    Check the drum earth. Plastic tab removed before fitting?
    Yes, tab removed from back of the drum.
    Issue is random, could do 200 prints without a problem then put out 10 to 15 pages with lines.

  6. #6
    Senior Tech 100+ Posts kyogenius's Avatar
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    Re: Vertical black lines..

    have had this very same problem on a 5500i .
    try this and see if it will solve your problem
    get into sim 100....turn AC auto adj OFF... chnge the AC BIAS to any value between 107-117 and check if it helps.One of our machines has been working fine after doing that.
    failure is not an option !

  7. #7
    Field Supervisor 500+ Posts
    Vertical black lines..

    copiertec's Avatar
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    Re: Vertical black lines..

    We have used dialectric grease on some drum shafts to correct drum shorting issues on the old Alfard series.

  8. #8
    Technician JPazy's Avatar
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    Re: Vertical black lines..

    I had one many moons ago having a similar problem. Would have sworn it was drum grounding or MC problem. Ended up being a problem with the DV unit. Replaced the developer unit and problem was solved.

  9. #9
    Trusted Tech 50+ Posts
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    Re: Vertical black lines..

    Hi,
    why you don`t follow UTAX bulletin TB-57S to solve it?
    You also can use KYO bulletin 2N9-00009 (F180)
    Attached Files Attached Files

  10. #10
    Service Manager 1,000+ Posts
    Vertical black lines..


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    Re: Vertical black lines..

    Quote Originally Posted by KYO_OEM View Post
    Hi,
    why you don`t follow UTAX bulletin TB-57S to solve it?
    You also can use KYO bulletin 2N9-00009 (F180)
    Spot on. Great contribution.

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