Canon PIXMA MP600 Quick Start Manual page 84

Cause
Too much plain paper loaded.
Foreign object in the Auto Sheet
Feeder or Cassette.
Envelopes not prepared or loaded
properly.
Inner Cover is not completely closed.
80 Troubleshooting
You can load approximately up to 150 sheets of 17 lb / 64 gsm plain paper (0.52
inches / 13 mm in stack height). However, proper feeding of paper may not be
possible at this maximum capacity depending on the type of paper or
environmental conditions (either very high or low temperature and humidity).
In such cases, reduce the sheets of paper you load at a time to around half
(around 0.2 inches / 5 mm in paper stack height).
For details on loading paper, see "Loading Paper" on page 15.
Make sure that there are no foreign objects in the Auto Sheet Feeder or
Cassette.
When printing on envelopes, refer to "Envelopes" in the User's Guide on-screen
manual, and prepare the envelopes before printing.
Once you have prepared the envelopes, load them in the machine in portrait
orientation. If the envelopes are placed in landscape orientation, they will not
feed properly.
Close the Inner Cover completely. Paper does not feed properly if the Inner
Cover is even slightly open.
Action