Brother HL 2270DW - Manual (Page 75)

Routine Maintenance
71
4
REPLACE TONER
4
The machine will stop printing until you replace the toner cartridge. A new and unused genuine Brother toner
cartridge will reset the REPLACE TONER mode.
Replacing the toner cartridge
4
Before you replace the toner cartridges, see Before replacing the consumable items on page 67.
a
Make sure that the machine is turned on. Leave the machine for at least 10 minutes to cool down.
b Open the front cover.