Canon PRO-300 Series Online Manual page 316

5. Slide right paper guide (F) to open both paper guides and load the paper in the center of
the top feed WITH THE PRINT SIDE FACING YOU.
6. Slide right paper guide (F) to align both paper guides with both sides of the paper stack.
7. Close feed slot cover gently.
The paper information registration screen for the top feed is displayed on the LCD.
8. Select the size and type of paper loaded in the top feed at Page size and Type, select
Register, then press the OK button.
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