Question about Samsung CLP-510 Laser Printer

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Toner and Imaging Unit issues

Replaced imaging unit but continue to receive intermittent replace messages. Also, just started getting replace toner messages even when the toner cartridges are new. Unable to use printer when these occur.

This morning it first said "replace black toner" even though I had just put a new one in recently. I had another, so I replaced it and then I had a "replace magenta toner". I did and then it said "replce cyan toner". I did and then it said "replace black toner" again. Very frustrating.

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  • 2 more comments 
  • jeannniec Jan 12, 2008

    Printer says install magenta or yellow toner or both and will nor print event in black. How can I reset counter or access this. What is the fix /

    I have opened and re entered cartridges and started and stopped printer and cleaned the contact points

  • Anonymous Dec 03, 2008

    Our CLP 510n gave us a replace imaging unit message about a month ago, and we dutifully did so. We were surprised when we got the same message so soon after the replacement, but ordered a new one and put it in-- yet we still get a "replace imaging unit" message and the Imaging Unit Life still has the high numbers for the old one. Nothing we do seems to help and the people at Samsung don't seem concerned/knowledgeable... Help!

  • Anonymous Mar 20, 2014

    how do I reset the imaging unit. I replaced a toner cartridge with a re-fill and the printer now tells me to replace all cartridges and the imaging unit.

  • amir
    amir Feb 23, 2017

    you ned pony prog for reset chip dowenlod and use your problem is ok



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If this IS a CLP-510, first make an information confirmation print.
Press MENU, then press ENTER, and ENTER again.

Look at the counter for the imaging unit, is it a low count confirming that you have indeed replaced it ?
If not you will need to reset the counter.

Check the counters for the toner cartridges, and check the capacity of the cartridge. On a CLP-510 the image counter for the toner is held on the chip on the cartridge (which also identifies the capacity of the cartridge).

There have been some faulty (oiginal Samsung chips), and of course re-manufactured cartridge chips could fail (many re-manufacturers don' test their cartridges before dispatch, they don't have the facility to do so without starting the count on the chip (or 'bowing' the reset fuse on a CLP-500 cartridge). VERY few re-manufacturers can test these cartridges without starting the count.

Sometimes the 'replace xxxxx toner' messages are caused by toner on the three contacts on the side of the cartridge, or their mating contacts inside the printer. Rarely, this can be caused by a faulty circuit board.

Posted on Jan 12, 2008


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Posted on Jan 02, 2017


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Related Questions:

1 Answer

How do I reset ms610 imaging unit?

When you get the error message "Replace imaging unit, 0 estimated pgs remain [84.3x]" This means the imaging unit has reached end of life and needs to be replaced. The device will not print, and this message will not be cleared, unless you replace it with part number 50F0Z00
(or 500z)
Vertical streaking. If the imaging unit is near end of life, or the device has had problems with non standard toner, vertical streaks may occur on the page. Replacing the imaging unit will resolve the problem.
Vertical streaks on page
Vertical band at top of page. This typically appears on printed images, but can also appear on text. The most likely cause is toner contamination on the charge roll, however if the band is still visible after printing 30-40 continuous pages this means the imaging unit needs to be replaced.
Vertical Banding on images
Seal failure on the imaging unit. Occasionally seal leaks have been seen from the Imaging Unit.
Toner will be seen on the main frame near the Imaging Unit sides.
If toner build up is excessive, it may even fall into the Tray below. Cleanup with a toner vacuum may be needed.
Replace the Imaging Unit to fix the problem.
Spots, scratches, marks on the page. If they are random, this indicates a problem with toner scatter.If they are repeating patterns, measure the distance between matching marks or spots. If the distance is one of 97mm, 47mm or 38mm, this indicates marks or dents on the imaging unit and it will need to be replaced.
You receive the message Replace defective imaging unit The imaging unit is defective and needs to be replaced. If you just installed it, it will be covered under warranty - contact Lexmark Australia on 1300 362 192
You receive the message Reinstall missing or unresponsive imaging unit and the below instructions don't resolve the problem. Try one or more of the following:
  • Check if the imaging unit is missing. If missing, install the imaging unit.For information on installing the imaging unit, see the "Replacing supplies" section of your device's User's Guide
  • If the imaging unit is installed, then remove the unresponsive imaging unit, and then reinstall it.
  • Note: If the message appears after reinstalling the supply, then the imaging unit is defective. Replace the imaging unit.
You receive the message Replace unsupported imaging unit The imaging unit you attempted to install was either non-genuine, or was from a different region. Buy a genuine Lexmark imaging unit from an authorised Lexmark supplier in your country/region.
You receive a 31.6x error One of the following errors is shown on the display:
31.60 Imaging unit smart chip error
31.61 Imaging unit I2C packet timeout
31.62 Imaging unit I2C packet has been sent but code timed-out on receiving the data (callback)
31.63 Imaging unit security error in the send challenge sequence
31.64 Imaging unit ROM signature error
31.65 Imaging unit stuck busy (status register and/or CRI Arbiter register report busy)
31.66 Toner failed to replenish into the imaging unit
In this case you need to ensure that the imaging unit is properly installed. If yes, check if the imaging unit is supported. Replace with a supported imaging unit if necessary.
If the problem remains, you will need to organise a Lexmark service call (Australia 1300 362 192)
You receive error message 32.11 Imaging unit smart chip compatibility error This could be caused by an unsupported imaging unit (non-genuine or incorrect region). Replace with correct imaging unit to clear this error. If your imaging unit is supported, you will need to organise a Lexmark service call (Australia 1300 362 192).
You receive error message 84 Imaging unit low If expected, replace the imaging unit. If unexpected, call Lexmark Support (Australia 1300 362 192)
Replacing the imaging unit

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1 Answer

When I make a copy (black and white) half of the paper (length) comes out black

Your imaging unit may need to be replaced. Try changing the toner first. If the issue continues then it's the imaging unit.

Sep 05, 2014 | HP Color LaserJet 2840 All-in-One...

1 Answer

How can i settle the problem of magenta developer finishing so fast. Magenter developer for Konica Minolta Bizhub C550 is getting finished so fast.

If the message Change Imaging Unit Magenta displayed refer to imaging unit with contents a developer.The Imaging unit life is 80.000 copies.
The imaging units located after front door when is located the waste toner box.
If the message M toner end/change the M toner displayed refer to toner cartridge
The toner cartridge life 15.000 copies 5% saturation.In full color mode the color saturation is 80% and the color toner life is 6.000-8.000 copies.
I think your problems is a toner not the developer.

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Removing a error message on a samsung CLX MFDevice


Causes :

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  • The remaining life of the imaging unit is less than 0% of its life.


  • Replace the Imaging unit (Toner). remove the old toner and replace it with a new one, look in the user manual for detailed steps.

Additional help :

if you need further assistance on how to replace the Toner, please give me the Printer's Brand and Model and i will provide you with detailed steps.

Thank you.

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1 Answer

The printer did not reset when we replaced the black toner AND the imaging unit

Hi this issue may be casued because when you replace the toner and imaging unit they must be new and not taken from another machine i am sure if you put a new out of the box toner and drum unit out of box it will work

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Sounds like you may have wet toner, or was once wet toner. Ive worked on printers for years and I have actually found a few cartridges that had bad toner. Kind of like getting sugar or flower wet.
Also. sometimes the imaging unit won't charge the roller properly or the roller gets worn (I.E. Static Charge holds the toner to the drum until it is applied by the imaging unit)
So if you've replaced the imaging unit, then it almost has to be the toner itself or the toner drum. They are both part of the cartridge and the problem should go away if you replace the cartridge.

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1 Answer

Large Toner Streak... Bad Imaging Unit?

Check to see if you waste toner recycling for the cyan is working or being blocked. Check the transfer bias roller next to the cyan drum. Return you cyan imaging unit for a warranty replacement. Check for obstructions to the cyan developing unit. Check that the cyan IU was put into the machine properly. Check for toner leaking from the entrance to the developing unit or from the toner cartridge.

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