Printer keeps showing 'Replace Toner' message after installing the Cartridge - Brother TN-2210 / 2220
Reset process
1) Open the printer front cover
2) Press "Cancel/Back“
3) Press “Start”
4) Press the up-arrow until display shows “11” to reset the cartridge type TN-2210
5) Press the up-arrow until display shows “12” to reset the cartridge type TN-2220
6) After selected the cartridge type to reset, press “OK”
7) When accepted appears on the display, close the printer front cover. Now printer is ready for printing.