FOR POSSIBLE SOLUTIONS: See pinned comments and other comments below. The bad news is that it looks like if your printer is out of warranty, you might need to open up most of the printer to fix it. If you do find an alternative/easier solution, please do share below!

Problem Description: The printer suddenly and randomly started grinding this way. It seemed to think it had a carriage jam. I followed the instructions to clear paper jams to the tee, but the issue persisted.

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