Canon Pro-1000 series Online Manual page 703

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Cause
Possible causes include the following.
• There is no paper in the manual feed tray.
• Paper is not loaded properly.
What to Do
Take the corresponding actions below.
• Load a sheet of paper in the manual feed tray.
• Align the paper guides with the both edges of the paper when you load paper.
After carrying out the above measures, press the printer's OK button.
Note
• To continue printing from the manual feed tray, wait until printing is completed, and then load the next
sheet.
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