If you run into this issue, run around 25 or so copies, open up the fuser guide and see if it's accumulated moisture on the edge. Damp paper (even from a new ream) has been my issue with this exact jam. Ran across the street to another school that we have machines at, grabbed some of their paper, ran the whole ream with no jams, or moisture. But this has just been what I've been finding a lot with this series.
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