Hi,
For the MX922 you can try removing the print head and putting it back in but if the error does not clear, the issue is with the print head.
Also, for your MP480, try a nozzle cleaning and deep cleaning.
f you have run and cleaning and deep cleaning but the issue remains, it looks like the printer has experienced an internal hardware issue and would need to be replaced.
You would qualify for the Canon Upgrade Program. This is for out of warranty units which have been diagnosed to require service, or for some reason are incompatible with a new or upgraded system. This option allows you a one-time opportunity to purchase a replacement product, discounted from the list price.
If you would like to take advantage of this offer, please the Canon Sales Department at (866) 443-8002 Mon-Sat, 9 AM to 9pm EST excluding holidays.
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