RESET DRUM Brother MFC 2701DW
Turn the printer on after that, open the front cover and the screen shows "Front Cover open"
Press and hold the OK button for a few seconds
The screen reads "Replace Drum".
Select 1 to reset the print drum counter
Then, close the front cover of the printer. Now the machine has no drum error.
RESET TONER Brother MFC 2701DW
Turn the printer on after that, open the front cover and the screen shows "Front Cover open"
Press and hold the OK button for a few seconds
The screen reads "Replace Drum".
(Do not follow screen prompts)
Press * 0 0 (* zero zero) on the keyboard
Then, close the front cover of the printer. Now the machine is out of toner error.