HP Photosmart C4680 All-in-One Printer - Manual (Page 107)

9. Repeat if necessary for the other print cartridge.
10. Gently close the print cartridge door and plug the power cord into the back of the
product.
Cause: One or both of the print cartridges were not installed or were installed
incorrectly.
If this did not solve the issue, try the next solution.
Solution 4: Contact HP support
Solution: Contact HP support for service.
Go to:
www.hp.com/support .
If prompted, choose your country/region, and then click Contact HP for information
on calling for technical support.
Cause: The print cartridge was defective or not intended for use in this product.
Printing in ink-backup mode
Solution: If you receive the ink-backup mode message and two print cartridges are
installed in the product, verify that the protective piece of plastic tape has been
removed from each print cartridge. When plastic tape covers the print cartridge
contacts, the product cannot detect that the print cartridge is installed.
Chapter 10
104 Solve a problem
Solve a problem