Canon DR-2580C - Manual (Page 52)

48 Using the Scanner
7.
Be sure that the upper unit is completely closed by pushing on both edges with
both hands until you hear a click.
8.
Press on both sides of the back cover to close it.
IMPORTANT
Be sure to press on both sides of the upper unit and back cover to ensure that
they are securely closed. Feeding errors will occur if only one side is closed.
Note
After removing the jammed paper, check to see if the last page was scanned,
and then continue scanning.