I am getting white specks only on black. I replaced the drum and developer unit 60K copies ago for the same problem. Any ideas?img-218115303-0001.pdf See the attachment for a sample of the problem.
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Re: KonicaMinolata C552
Lots of ideas....Help us narrow it down. Where is the copier in its PM cycle? New units? As for total copies. Fuser? transfer roller? Belt? Does it do the same in color? -
Re: KonicaMinolata C552
Black drum and developer were replaced last service call for the same problem. 60,000 copies have been run since then mostly black. C,M, and Y internal prints are normal, Defect only shows up on black copies and prints. Fuser and transfer belt are about at half life. The machine has 1.6M copies on it.Comment
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Re: KonicaMinolata C552
are you using genuine toner ?Comment
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Re: KonicaMinolata C552
This Parts & Service manual can now be purchased for $12.77 and downloaded immediately after payment from:
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Paul@justmanuals.comComment
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Re: KonicaMinolata C552
All parts and supplies are OEM.Comment
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Re: KonicaMinolata C552
well thats a good starting point.
what condition are the transfer belt and roller in ?
I cant look at your scanned image at the moment due to network limitations, but i wouild be doing a stop page test to see if its development, first or second transfer causing it.
I also know poor quality paper can cause holes in solid colours on KM machines, so try different paper too. When it turns out to be paper i bill for my time wasted. quickly makes the "savings" using crap paper seem negligible in their eyes.Comment
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Re: KonicaMinolata C552
So you've got some nice clear repeating patterns, ~52mm intervals by my estimation. What roller is 16.55mm diameter? Probably a charge roller. black primary? black primary transfer? secondary transfer? =^..^=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: KonicaMinolata C552
I've had similar issue with white spots that seemed to occur more on thicker stocks(usually junk paper). Increasing the second transfer voltage took care of the problem but your sample looks a little different than what I normally see. You may want to look at the image as it sits on the transfer belt.
If replacing Drum and Starter fixes it then comes back about 60k later then maybe the starter is getting contaminated with paper dust or something.Comment
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