MFC-L2690DW/MFC-L2690DWXL/MFC-L2710DW/MFC-L2717DW
Press Menu.
Press or to display the [General Setup] option, and then press OK. Press or to display the [Security] option, and then press OK. Press or to display the [Setting Lock] option, and then press OK. Enter a four-digit number for the password.
Press OK.
When the LCD displays [Verify:], re-enter the password.
Press OK.
Press Stop/Exit.