I am going to help you end the deep sleep mode for the Brother Printers HL-L2370DW, HL-L8350CDW, HL-L2390DW
Different for HL-L2390DW combo button instead of "Back + Down" it's the Dismiss + Stop / Exit
Different for HL-L8350CDW combo button instead of "Back + Down" it's the down arrow + cancel
Please comment and give the video a thumbs up if it works for you. Thanks for watching!!!