Canon LASER SHOT LBP3500 User Manual page 59

Do not touch the black rubber pad (A) in Cassette 1. This may result in misfeeds.
•
2
Do not touch the feed roller (A) in Cassette 2. This may result in misfeeds.
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Be sure to turn the printer ON once when loading paper in the paper cassette for the first
•
time after installing the paper feeder.
NOTE
Before closing the multi-purpose tray, remove any loaded paper.
Keep the multi-purpose tray closed when it is not used.
2-16 Paper Source
(A)
(A)