Brother MFC-J7630, MFC-J6530, J6930, J6530 & MFC-J6920 Printhead Purge

This is for when the usual printhead clean just does not work. It's possible this will work on other printers. Press and hold the Home button, press and hold the 4th blank field. Press *,2,8,6,4 then 7,6,3 when the maintenance notice comes up. Follow the rest of the video to see how to purge. Sometimes you have to do 7 or 8 of these. If after the test print shows a bad result then repeat 7,6,3 onwards. Look at the comments, some people have put in comments about other printers too!