The right front cover is open.
Close the right front cover.
Alternatively, the print cartridges are not installed or are installed incorrectly.
Install the print cartridges correctly.
If the cover is open:
Close the right front cover.
If the print cartridges are not installed or are installed incorrectly:
Open the right front cover.
Push the cartridge fully in.
Close the right front cover.
If the error persists, remove the print cartridge, and then reinstall it. Do this once only.
If there is a problem with the print cartridge, try installing a new cartridge.
For details about handling the print cartridges, see Handling Print Cartridges.