Rotate Toner Button and Replace Cartridge Messages

I have a magicolor 2400 W. My Rotate Toner button does not work. Usually when I sit down to print I get an error message that says to replace toner cartridges that I have already replaced. If I take out the cartridge indicated and put it back in it will rotate to another color and tell me I need to replace that one. If I take out that color and put the same cartridge back in, it will rotate to a different color etc. Usually with enough patience I can get the ready button to light up and it prints just fine. Tonight no matter how many times I pull the cartridges out and put them in again, it isn't working. I don't use the printer much so I know the black cartridge especially does not need to be changed. I can't keep replacing cartridges only to find out that it they really aren't empty. Is there something else I can do tonight to get it to print with the existing cartridges? Does some sensor need to be cleaned? Thanks CIndy