Canon MP490 series On-Screen Manual page 654

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Advanced Guide Troubleshooting
In Other Cases
Make sure of the following:
Check 1: Are there any foreign objects around the Paper Output Slot?
Check 2: Are there any foreign objects in the Rear Tray?
If there are any foreign objects in the Rear Tray, be sure to turn off the machine, unplug it from the
power supply, then remove the foreign object.
Check 3: Is the paper curled?
Check 3: Load the paper after correcting its curl.
> Paper Jams > In Other Cases
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