Printing in ink-backup mode, Solution 4: contact hp support – HP Photosmart C4780 User Manual
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8.
Hold the print cartridge with the HP logo on top, and insert the print cartridge back
into the slot. Make sure you push the print cartridge in firmly until it snaps into
place.
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
.
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
Chapter 12
86
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