If you have any of these Brother printers below and since fitting a compatible toner are getting a message Replace Toner
Then please follow these instructions:
The printer will then as you to wait while it goes through its process. You should come back to the main menu when completed.
Brother use the following index
Black is K, Magenta is M, Cyan is C and Yellow is Y
TNR = toner
STR = starter cartridge (the toner cartridges that came with your printer)
STD = standard toner or TN341
HC = high yield toner or TN346
IE to reset the TN346K (Black) toner counter you need to select K.TNR.HC.