I have one that when using the adf and using a letter document and one paper tray has letter and the other tray legal it will say there is no paper in the multi-purpose tray and that tray has no paper in it. sometimes it will print in legal size. the touch screen will some times not work or some of the features on the screen are not there. Before this problem it was have network print and printing on its own at any time and just junk. Not sure if its the main or the engine board causing this problem. any help appreciated.