Canon PIXMA MP600 Quick Start Manual page 17

If you print mainly on plain paper
You can load plain paper of the same size in both paper sources, and set the printer driver to
automatically switch the paper source when either paper source runs out of paper during
printing.
Note
For details on how to load paper, see "Loading Paper" on page 15.
For details on printer driver settings, refer to the Printer Driver Guide on-screen manual.
(A) Auto Sheet Feeder: Load plain paper
(B) Cassette: Load plain paper
(A)
(B)
Before Printing 13