Canon imageRUNNER 3300 Reference Manual page 234

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6-20 Clearing Paper Jams
Open the upper right cover of the main unit.
When the Paper Deck-L1 (option; See p. 7-9) is attached, move the paper deck away from
the main unit.
Remove any jammed paper.
Press and release the paper drawer release button of the paper
drawer indicated on the touch panel display, until the paper drawer
releases.