Canon imageFORMULA DR-G2140 User Manual page 145

Hint
The roller holder returns to its original position when released.
4
Remove the pickup roller, and install a clean or
replacement Pickup Roller.
IMPORTANT
Install the Pickup Roller so that the side with the gear is on the left.
Gear
5
Close the roller cover. Make sure that the front unit is
completely closed by pushing until you hear a click.
IMPORTANT
Failure to firmly close the roller holder and roller cover may cause
a feed error. Always be sure to check that the roller holder and
roller cover are closed.
6
Smoothly close the upper unit.
145
(See p. 138)