After installing a new Brother TN-210 laser toner cartridge you still receive a low ink warning or the printer does not recognize the new cartridge and won’t let you print.The first thing you should try is to reset the toner. It is easy to do with the reset procedure to Reset your Brother TN210 Toner Levels:
1. Open the front cover that gives you access to the toners.
2. Press “clear/back button”. You will see “K-TNR-STD” display on the screen.
3. Using the “+” and “-” buttons select the toner you want to reset.
4. Press the “Ok” button.
5. It will display “Ok?” and hit the “Ok” button again to reset the toner.
6. Close the lid.