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  1. #1
    Service Manager 1,000+ Posts
    NP6030 Black Lines

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    NP6030 Black Lines

    I know I'm reaching back here. Black lines about 1mm wide in the cross feed direction equal to the drum pattern. Changed drum and it went away for a day and came back. Changed composite power supply, still NG. I noticed the black even shows up in all the void areas. Going further, I found, by stopping the machine with the copy under the drum, that even with a white original, I still get the lines AND the drum is completely coated black but only transfers the lines. Wish I had a dv unit to swap but the fact that the lines perfectly match up with the drum circumference I doubt thats the problem. Gonna change dc controller tomorrow but thought I'd reach out for other ideas. Thought I saw everything on this model, I guess not.


  2. #2
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    NP6030 Black Lines

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    Re: NP6030 Black Lines

    if u scan a white piece of paper on the glass/ do u still get cross-feed black lines on the copy

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  3. #3
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    NP6030 Black Lines

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    Re: NP6030 Black Lines

    Yes. Thru ADF or on glass. Was shocked to see drum coated black with a white original and still come out white except for the lines. I even cut from line to line and wrapped it around the drum and its a perfect match.


  4. #4
    Service Manager 10,000+ Posts
    NP6030 Black Lines

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    Re: NP6030 Black Lines

    Quote Originally Posted by Brian8506 View Post
    Yes. Thru ADF or on glass. Was shocked to see drum coated black with a white original and still come out white except for the lines. I even cut from line to line and wrapped it around the drum and its a perfect match.

    did u check and see if the scan lamp is turning off/on during scan
    used to have bad cable contribute to this


    open cover a run a sky shot without paper on glass !!

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  5. #5
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    Re: NP6030 Black Lines

    Did u try to replace drum charger roller? Try to look at the cam driving the drum unit,it could be not grounding the drum. Also check on the preconditioning lamps ie small lamps above the drum unit.


  6. #6
    Service Manager 1,000+ Posts
    NP6030 Black Lines

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    Re: NP6030 Black Lines

    Quote Originally Posted by teckat View Post
    did u check and see if the scan lamp is turning off/on during scan
    used to have bad cable contribute to this


    open cover a run a sky shot without paper on glass !!
    Yea I thought that too but the lamp stays on all the way. No blacking out. The blank exposure lamps are clean and operating fine. BTW, the drum I replaced was a unit so yes I replaced the charge roller.


  7. #7
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    Re: NP6030 Black Lines

    By stopping the machine with the copy under the drum are there any prints of the copy on the drum? If not check on any of the mirrors that could have gone out of home position. If there are prints on the drum try settings of the drum in service mode 3. If all fails try to change dc controller board.


  8. #8
    Service Manager 1,000+ Posts
    NP6030 Black Lines

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    Re: NP6030 Black Lines

    Quote Originally Posted by COPIERTEC ASSOCIATES View Post
    By stopping the machine with the copy under the drum are there any prints of the copy on the drum? If not check on any of the mirrors that could have gone out of home position. If there are prints on the drum try settings of the drum in service mode 3. If all fails try to change dc controller board.
    There is print as well as a complete black coating. I can still see the outline of the print and ironically, the copies are fantastic other than the black lines. I don't see why the image is being transferred but not the rest of the drum coating. I should see just the image on the drum with the white areas being clean but thats not the case. Had to put it away for the day and I'll start with drum ground and dc controller tomorrow.


  9. #9
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    Re: NP6030 Black Lines

    Possibly,while checking at the copy settings in service mode 3 look at the PRIMARY,IP-OFST and LIGHT.The BIAS must always remain at 0.Best regards!


  10. #10
    Service Manager 1,000+ Posts
    NP6030 Black Lines

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    Re: NP6030 Black Lines

    Primary and ip offset are set to drum spec. Bias is at 0. Performed APVC MR


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