Canon DR-6030C - Manual (Page 125)

Appendices 119
Chapter 4
5.
Close the upper unit slowly. Be sure that the upper unit is completely closed by
pushing on both edges with both hands until you hear a click.
IMPORTANT
Do not force the upper unit to close. Doing so may damage the scanner.
Removing and Attaching the Retard Roller
Follow the procedure below to remove and attach the retard roller for cleaning
or replacement.
CAUTION
Do not use excessive force when removing or attaching the
rollers. Doing so may damage them.
Removing the Retard Roller
1.
Hold the upper unit as shown in the diagram, and open it slowly until it stops.
CAUTION
The pickup roller is located in the middle of the upper unit. Do not
hold the protrusion on the upper unit when you open it. Doing so
may deform the pickup roller or cause a feed error.