Canon imageRUNNER C3489 Reference Manual page 424

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Clearing Paper Jams
Remove any jammed paper.
Gently push Paper Drawer 2 back into the machine until it
clicks into place in the closed position.
CAUTION
When returning the paper drawer to its original position, be careful not to
get your fingers caught, as this may result in personal injury.
Close the paper drawer's upper right cover.
If the optional Paper Deck-Z1 was moved away from the main unit, reconnect it to
the main unit. For more information, see "Paper Deck-Z1," on p. 3-15.