HP C4795, C4750, C4780, C4740 Solution 3 Replace the print cartridge, Incompatible print cartridges

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: The print cartridge contacts needed to be cleaned.

If this did not solve the issue, try the next solution.

Solution 3: Replace the print cartridge

Solution: Replace the indicated print cartridge. You can also remove the indicated print cartridge and print using ink-backup mode.

NOTE: During ink-backup mode, the product can only print jobs from the computer. You cannot initiate a print job from the control panel (such as printing a photo from a memory card).

Check to see if your print cartridge is still under warranty and end of warranty date has not been reached.

•If the end of warranty date has been reached, purchase a new print cartridge.

•If the end of warranty date has not been reached, contact HP support. Go to www.hp.com/support. If prompted, choose your country/region, and then click Contact HP for information on calling for technical support.

For more information, see:

“Cartridge warranty information” on page 51

Cause: The print cartridge was damaged.

Incompatible print cartridges

Try the following solutions.

•Solution 1: Check the print cartridge

•Solution 2: Contact HP support for service

Solve a problem

Solution 1: Check the print cartridge

Solution: Check to make sure you are using the correct print cartridges for your product. For a list of compatible print cartridges, see the printed documentation that came with the product.

If you are using print cartridges that are not compatible with the product, replace the indicated print cartridges with print cartridges that are compatible.

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