Canon PIXMA iP 3300 User Manual page 107

Hold the Rear Cover so that the Rear Cover Lever comes to the left. Align the
protrusions at the right edge of the cover with the slots at the rear of the
printer and press on the lever to reattach the Rear Cover.
Important
Press firmly on the Rear Cover until it is fit squarely in the
rear of the printer. If the Rear Cover is not reattached
properly, paper may not be fed properly and cause paper
jams.
Cleaning with the Printer Driver (Bottom Plate cleaning)
This section describes how to clean the inside of the printer. If the inside of the
printer becomes dirty, printed paper may get dirty, so we recommend
performing cleaning regularly.
Note
You cannot feed paper from the Front Feeder when
performing Bottom Plate Cleaning. Always load paper in
the Auto Sheet Feeder.
Cleaning the Inside of the Printer without a Computer
The inside of the printer can also be cleaned without a
computer; it can be performed from the printer itself.
1. Make sure that the printer is turned on, and then
remove any paper from the Auto Sheet Feeder.
2. Open the Front Feeder and extend the Paper Output
Support.
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