HP Photosmart C4780 - Manual (Page 83)

4. Remove the black print cartridge from the slot on the right. Do not touch the ink
nozzles or the copper-colored contacts. Check for possible damage to the copper-
colored contacts or ink nozzles.
Make sure the clear plastic tape has been removed. If it is still covering the ink
nozzles, gently remove the clear plastic tape by using the pink pull tab. Make sure
you do not remove the copper colored tape containing the electrical contacts.
1 Copper-colored contacts
2 Plastic tape with pink pull tab (must be removed before installing)
3 Ink nozzles under tape
5. Reinsert the print cartridge by sliding it forward into the slot on the right. Then
push the print cartridge forward until it clicks into the socket.
6. Repeat steps 1 and 2 for the tri-color print cartridge on the left side.
Cause: The indicated print cartridges were installed incorrectly.
Non-HP cartridges installed
Solution: Follow the prompts on the display to continue, or replace the indicated
print cartridges with genuine HP cartridges.
Errors 81
Solve a problem