When they actually have a problem, you've forgotten how to fix them.

Witness the recent paper jam of the last sheet in the tray. The paper light comes on and I load more paper but the light stays on. R&R tray, more paper, less paper, other paper, inspect the tray, the tray cavity, several times each.

Finally start opening every door, r&r the consumables, and finally a crumbled piece of paper shows, OH YES! That dumb paper lamp doubles for jam.