HP C4740, C4750, C4795, C4780 manual Solution 3 Remove and reinsert the print cartridges

Solution 3: Remove and reinsert the print cartridges

Solution: One or both of the print cartridges are not installed or are installed incorrectly. Remove and reinsert the print cartridges and verify that they are fully inserted and locked in place. If the problem persists, clean the copper-colored contacts of the print cartridges.

To clean the print cartridge contacts

1.Turn on the product and open the print cartridge door. The print carriage moves to the center of the product.

2.Wait until the print carriage is idle and silent, and then unplug the power cord from the back of the product.

3.Lightly press down on the print cartridge to release it, and then pull it towards you out of the slot.

NOTE: Do not remove both print cartridges at the same time. Remove and clean each print cartridge one at a time. Do not leave a print cartridge outside the HP Photosmart for more than 30 minutes.

4.Inspect the print cartridge contacts for ink and debris buildup.

5.Dip a clean foam rubber swab or lint-free cloth into distilled water, and squeeze any excess water from it.

6.Hold the print cartridge by its sides.

7.Clean only the copper-colored contacts. Allow the print cartridges to dry for approximately ten minutes.

1Copper-colored contacts

2Ink nozzles (do not clean)

Solve a problem

Errors 85