Before your refill it – reset it!
This reset procedure is highly recommended before refilling so as to extend the life of your cartridge, making full use of the toner inside for additional cost savings.
Refill when you decide the toner needs replaced not Brother!
By resetting your Brother printer's page counter, you can avoid having to reset your cartridge's flag gear or install one on a starter cartridge. You will also have less toner to empty and will get more prints from your cartridge.
The video above shows the DCP version of the printer in action - for the MFC versions of the printer there are a few adjustments to make - see below
If an error message is shown on the LCD display, press the Cancel (X) button to show the main menu.