The inside the cover of a 1990s ice maker explains how to test each component and verify proper function, all of which you can do while it's still installed in the fridge*!
A newer, identical ice maker from the 2010s doesn't have the sticker, just a notice which says "refer to tech sheet in unit compartment for component checks".
I see no reason for this change other than to discourage repair and encourage waste.
(*except for the last test)













