asked Mar 18, 2017 at 11:28am
Brother Brother HL 4570CDW

Cover door error message

After installing new cartridges ( after used ones) I can't print...error message on my MAC ( wireless hookup) keeps saying cover door open...have tried numerous things....unplugging all, taking out all the cartridges and putting them in, checking all doors....Help! I'm a teacher and need to print!


The way the covers work is there is plastic piece protruding from the top. When you close the cover, it either pushes on a mechanical switch or goes between the poles of an optical sensor. That signals the controller board that the cover is closed. Possible that the piece broke off. Examine the underside of the cover and the top of the inside for the things I mentioned. If you find the switch, you can insert something manually into it and see if the message goes away.

by moe on Mar 18, 2017 at 4:32pm Add comment