Dell 1320c - Catalina 10.15 Mac Pro - will print but only from single feed - How to fix? the link to the recommended driver worked - but only so far as I can insert a single page versus auto feeding from Tray one. Anyone have any ideas how to change this ? the operator panel is not so helpful and the DELL printer web page not accessible as far as I can see. I can print other printer setting from that tray bu holding down the continue button so nothing wrong mechanically. thanks for your input.
I had the same issue. I started playing with the tray settings. When I switched to 250+500 sheets - everything started working ok. 
Also, if you are in the Word, use this setting - you can choose them by selecting