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.
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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
**Knowledge is time consuming, exhausting and costly for a trained Tech.**
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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.Comment
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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.Comment
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Re: NP6030 Black Lines
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.Comment
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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.Comment
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Re: NP6030 Black Lines
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.Comment
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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!Comment
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Re: NP6030 Black Lines
Primary and ip offset are set to drum spec. Bias is at 0. Performed APVC MRComment
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Re: NP6030 Black Lines
Here are a few out of the database:
Banding and light & dark copies, dark bands. Install a star lock washer between the noise filter PCB and mount.
Banding, erratic copy quality, exposure lamp is fluctuating. Replace LF1, check ET2, F2, J2, and ground.
Black line in the crossfeed direction. Inspect the composite power supply for cracks. A bumper modification is added to prevent cracking. Replace the composite power supply.
Dark copies, banding. Scan lamp flickers during a copy run. It may not flicker when activated in service mode, because the developing unit is not rotating. Check the developing cylinder for signs of arcing. There may be a staple or paper clip on the developing cylinder shorting out the developing bias.
Dark copies, banding. Scan lamp dims while copying. Poor connection at the filter for the composite power supply. Locate the small PCB to the left of the composite power supply. Identify where one on the capacitor legs contacts frame ground . Scuff up the back of the PCB at that point for a good ground.
In *3*, Light-5 has no effect of lightening or darkening copies. May have a fabric or woven appearance of fill areas. May be accompanied by 25 mm bars in crossfeed direction at 94 mm intervals. Poor drum ground contact. Clean drum ground contact and shaft end, and lubricate with conductive grease (CK-0544). Run *4*, APVC-MR to restore basic copy quality. Additional copy quality adjustments may be necessary.
I like the last one best. =^..^=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 =^..^=Comment
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Re: NP6030 Black Lines
I'm gonna focus on drum ground since I replaced composite, lamp doesn't flicker, I inspected dv unit and drum is taking on a full coat of black while still producing a good copy other than the lines. Maybe the new drum made good enough contact at installation thus the lines disappearing temporarily. Thanks for all the input guys. Will repost solution. Confidence!Comment
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Re: NP6030 Black Lines
So as not to possibly ruin another new drum, I put in a good used one and the lines disappeared. Put the bad drum in another machine and got the lines. I replaced the power supply prior so I figure I either had 2 drums do the same thing or the power supply took them out. Gonna wait a couple days and make sure the lines dont return.Comment
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