Used the search and I've only come across errors where the lifter would not work, a gear change and it goes back to working.

I have a different issue, the lifter in Tray 5 stays up and doesn't lower even when there's no paper in the tray.
I've run DC330 075-006 to lower the tray and it works, but as soon as i leave the maintenance screen, the lifter goes back up.

The machine does not throw any errors. Any ideas?

Should i try cleaning or replacing the lift down sensor (930W00111)?