BROTHER

Make sure that the machine is turned on. Open the front cover. Press and hold OK button about two seconds untill display Drum Unit on the display, and then press OK. Press the Up arrow key to reset the drum counter. Close…

The Brother machine has separate consumables the toner cartridge and the drum unit. Verify you replace only the drum unit and not the toner cartridge. Keep the machine powered ON. Replace the old drum unit with new one, put it into the…