Weak prints from a Samsung CLP-650N

peranders · 23rd April 2010, 06:50 PM

All colours are very weak with rather new toners. Any clue? 8000 pages.

wakibaki · 23rd April 2010, 07:11 PM

Is a definite fault P-A, not a software issue? Is the output patchy or uniform?

w

theAnonymous1 · 24th April 2010, 12:11 AM

Quote:

Originally Posted by peranders

All colours are very weak with rather new toners. Any clue? 8000 pages.

When you say the toners are rather new, does that mean you refilled the cartridges yourself? If so, how old are the cartridges and how many times have they been refilled?

The drums have an organic photoconductive coating that is extremely sensitive to light. This coating eventually wears out and can cause problems similar to yours.

It could also be a problem with waste toner build-up in the carts.

peranders · 24th April 2010, 05:29 AM

The cartridges are original, not refilled. As you can see the toner is weak for all colours.

wwenze · 06:09 AM

Edit 2:

The color sampler says all colors are weak, but black is much, much weaker (near 0 most of the time), hmm...

Try shaking the black catridge.

wakibaki · 24th April 2010, 05:42 PM

Quote:

Originally Posted by peranders

As you can see the toner is weak for all colours.

No, I can't see. There's one thumbnail, when it's expanded it looks as as though there are 2 pages in the foreground, the one on the right is streaky, the one on the left a bit murky but not streaky and might be acceptable. Then there's a test print further up, but the CMYK in that looks well saturated. Is there another image posted that I've missed?

You have to wonder what is going on if the test print is well saturated, but I can't actually tell if that is the case.

w

dangus · 2nd May 2010, 08:50 AM

Maybe a failing high-voltage supply?

peranders · 2nd May 2010, 05:41 PM

I suspect this is an systematic error and the high voltage or something with the charging could be the trouble.

24th April 2010, 05:29 AM	#4
peranders Electrons are yellow and more is better! diyAudio Member Join Date: Apr 2002 Location: Göteborg, Sweden Blog Entries: 4	The cartridges are original, not refilled. As you can see the toner is weak for all colours. __________________ /Per-Anders (my first name) or P-A as my friends call me

24th April 2010, 05:48 AM	#5
wwenze diyAudio Member Join Date: Mar 2008	Edit 2: The color sampler says all colors are weak, but black is much, much weaker (near 0 most of the time), hmm... Try shaking the black catridge. Last edited by wwenze; 24th April 2010 at 06:09 AM.

2nd May 2010, 05:41 PM	#8
peranders Electrons are yellow and more is better! diyAudio Member Join Date: Apr 2002 Location: Göteborg, Sweden Blog Entries: 4	I suspect this is an systematic error and the high voltage or something with the charging could be the trouble. __________________ /Per-Anders (my first name) or P-A as my friends call me

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23rd April 2010, 07:11 PM	#2
wakibaki Banned Join Date: Jan 2008 Blog Entries: 2	Is a definite fault P-A, not a software issue? Is the output patchy or uniform? w

2nd May 2010, 08:50 AM	#7
dangus diyAudio Member Join Date: May 2004 Location: Vancouver Island	Maybe a failing high-voltage supply?

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