Question about Konica Minolta magicolor 2430 DL Laser Printer

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(the infamous) ?X toner not installed? error message

Hi, Friends.

I just replaced my black toner cartridge on a konica minolta magicolor 2530DL. Now I am getting (the infamous) “X toner not installed” error message for all of my toner cartridges.

I read in another post that I should clean the three prong device that makes contact with the cartridges. However, upon inspecting it, one of the prongs is bent or broken. Is this three prong device the problem? If so, how can I order a new one?

Thank you for your time!


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  • Don C May 19, 2008

    when trying to work around this problem of "Black Toner not installed" I tried replacing the toner again but when I push the menu button after getting the "replace black toner" I get the message "Err Line 28"

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I just got off the phone with KM tech support for the same problem with my 2430dl.  Take out the drum and remove the toner cartridges, then look inside the printer.  You will see a piece of glass about 6" long.  Next to it, on the right side of the printer, there is a little white plastic enclosure that contains three spring-loaded contacts; this is the sensor that reads the chips on the individual cartridges.  First, try cleaning the three contacts with a swab/alcohol, as well as the chips on each cartridge.  If this doesn't solve the problem, then the problem is likely with the sensor.  The part number should be 4139-6306-02, and it runs about $5. This should solve the problem.

Posted on Jan 26, 2009

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I have the 2530DL, I was having trouble with the error "Cannot Rotate Cartridge." You can manually rotate the cartridge carousel as mentioned above, but if you simply stick a screw driver or letter opener into the hole on the right hand side (this is a switch that's pressed by the cover when it's closed.) The cartridge carousel will rotate freely. I was able to replace all my toners this way.  (the infamous) ?X toner not installed? error messa - ee258c1.jpg

Posted on Mar 25, 2009

  • David Taylor Jun 18, 2010

    My sensor prongs were bent and one of them finally broke and fell out. I found the part mentioned above on several websites. An alternative part number is: 8314139-6306-02. I found the part at Nationalparts.com, but with most sites they have minimum orders, so you will probably end up paying at least $25-30 with shipping.
    I ended up buying from Precision Roller. The 2530 model is very similar to the 2400 series and here's a link to the part schematic:

    http://printer.konicaminolta.com/service...


    I expected just to get the prong piece but it came with the entire sensor unit assembly along with the connecting wire.




    In hind sight it may have been easier to just install the little black prong unit, but since iI had them I decided to install all new parts. This required removing the side panel to chase the wire, but only two screws hold the side panel in place, one on the top under the cover and one on the rear. The cables are all secured with cable holders that are easily undone and re-secured.


    Snake the new wire through the hole in the side and run the wire along with the others to the rear. I had to remove a plastic piece under the fan to continue the run. The end plug should come out of the connector on the rear board easily, then reattach the new one. The plug fits into the connector on the board, don't try to pull the connector off the board, it stays in place and the wire connector fits into it. (I almost did this which would have been disastrous).


    The hardest part of the whole procedure is getting the assembly back down into it's proper spot. Pay careful attention when removing the old assembly and use some care since it is a light weight molded plastic. Two plugs hold the back side to the frame and three plugs hold the front side. I used a screw driver wedged between the frame and the rear two plugs to get them to clear then with pliers pulled the unit up and out. Now after I've done it, I think it works best to lift the assembly from the rear first, the front plugs are not as long as the rear ones. Now when putting the new one in just reverse the procedure. It also helps when getting the assembly into position to press down on the spring sensor, part of it has to fit under the carriage gear on the side. Put the rear plugs in first then GENTLY push the front down into place. I say gently because when I applied too much pressure on the front I broke the front plug off. I ended up having to use the old assembly after all! Needless to say I was very careful when pushing down on the front, you probably will need to use a screw driver to help shoe horn it into the right spot, it should just snap into place. That's it! Hope this helps someone! As far as repairs go, it wasn't that bad, just be careful with those plastic plugs!

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I messed around with this for about 2 hours too.

(First replacing the empty black... then the "missing" Megenta cartridge.... then front door open... then back to empty black cartridge.. and again around the loop.....)

Then saw the mention of cleaning the three copper color contacts to the right of the little tab you use to remove the cartridge.

I pulled out the black cartridge and used a pencil eraser (careful not to get any little remnants in the works).

Then I FORCED the rotation of carrier (it clicks as you manually turn it, top away from you). Cleaned the Megenta, Yellow and Red . (There are three of these copper contacts on EACH of the four cartridges. For a total of 12 copper contacts to clean.)

When you clean... make sure the entire copper contact is bright copper color.AND make sure none of the pencil eraser falls in the printer. (I did this by having the vacuum by the side sucking the eraser pieces as I cleaned the copper contacts.)

Then forcing the rotating drum back to the empty area where the black cartridge goes...Careful..only 1-2 clicks to perfectly line up the guides on the left and right. If you miss getting it lined exactly, do not try to go backward.... rotate around again (.with the top going away from you ).

Now.... mine prints ok. Hope yours does too... .



Posted on Jan 11, 2009

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In my case it looked as if the problem was from what looked like carbon (toner?) traces on the chip contacts of the yellow cartridge. Cleaned them of with 91% isopropyl alcohol as well as the sensor contacts and the other cartridge contacts which all appeared clean. Printer now works!

Thank you David Taylor for the hint about releasing the cartridge carousel! Those of you who are forcing the carousel risk damaging the unit, according to Minolta.

Posted on Dec 23, 2013

I had the same problem. I believe the problem is that the cartridges "misalign" and are not read. For example, mine kept reading that the magenta and black were missing but the printer would not turn the cartridges for me to get it out and clean it.

I pulled out the cyan which is the only one I could access...THAN you can easily manually spin the cartridge drum. I removed the magenta and cleaned around it although it was really not that dirty and put it back. It worked after that but it seems to be a continual problem.

Posted on Jun 20, 2008

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