Canon DR-5020 - Manual (Page 86)

86
Chapter 5 Daily Cleaning
7
To close the upper unit, push the upper unit inwards as far as
possible, and then release the upper unit.
When you release the upper unit, it slowly begins to fall down. Do not
apply unnecessary force to push the upper unit down. Doing so might
damage the scanner.
8
When the upper unit has fallen as far as it can go, press down
firmly on both sides to close it.
If you press the upper unit down only on one side, the opposite side will
not be full closed. Make sure that you hear it click into place.
If paper jams or double-feed (feeding of two or more document pages) occurs
frequently in spite of your having cleaned the rollers, a probable cause is roller
friction. If this is the case, replace the rollers. Contact the store of purchase or a
Canon service department.
MEMO