Incorrect toner we've just bought a spc240dn lanier printer brand new, installed as per instructions and now upon power up it says Incorrect tnr: K. all the toners are the originals that came in the box. All the packaging has been removed. Please help us

SOURCE: Toner Empty Message won't go off

check that the toner is inserted correctly, reboot print.

SOURCE: Fairly new toner and display reads "Install black cardtricge"

I have just resolved the "Install black cartrige" issue on my printer I am not sure if it will solve everyone's problem but these are the steps I took to solve the problem.

1. removed the black cartrige.
2. removed all the paper from the tray and noticed that one of the pages was a little jammed.
3. I then turned the printer on and off again and still encountered the "Install black cartrige" error message.
4. I then put the black cartrige back in the the printer and restarted the printer.
5. When the printer restarted it started to initialize correctly and I perform some test prints to confirm that it was back up and running.

SOURCE: Brother 5250DN Printer Toner light

Try resetting the toner counter manually;  * Turn off the printer and open the front cover * Press and hold the Go-button down * Turn on the machine while still holding button down, when all three LEDs are lit, release Go-button * Press the Go-button twice, and all three LEDs should be lit again. * Press the Go-button five times (six times if you have the High Yield toner) * Close the front cover and the toner counter should be resetted.