So I had the same problem, as well. There is a piece which broke on the gearing of the frame base-paper block, and the wheel which pull the paper doesn’t turn anymore (well it turn 1 for 3 tries, then 1 for 10 tries, then never again).
The printer shows a jam error message, but it’s not a jam (I guess the printer is just doing a basic test: it detects paper in the tray, it engages the paper tray motor, and then it doesn’t detect paper on the next floor => paper jam). It’s not a grab problem either (cleaning the wheel doesn’t fix the problem).
I contacted a repairer, and he told me that he is seeing a lot of these problems currently. But the reparation is more expensive than the printer itself (labor), so I decided to try myself, using this post.
I bought the piece (JC93-00547A):
I followed the video pointed by Abel: https://www.youtube.com/watch?v=Th_zO-9A... - It’s not perfect, but it was essential.
It’s less hard than I thought it would be when I watched the first time (my idea was that I would probably definitively kill my printer if I try to repair it, but it was not working anymore anyway, so…). It took me ~1 hour to complete the repair (disassemble, replace, reassemble), I’m not a very good handyman.
And… it works! I really thought I would break it, but no, the problem is completely fixed! :)
Thanks everyone, and for those who have the problem and hesitate: just try!