Brother HL-L6200DW "Replace Toner" is Displayed After Toner Replacement
To reset the toner warning follow the steps below.
1) Open the front cover.
2) Press "Cancel" and "Secure" button at the same time.
3) Use the up and down arrows to select TNR-STR if necessary.
4) Press "OK".
5) Press the UP arrow to confirm.
6) Close the front cover.
The toner warning should now be reset.