Ink Cartridge Installation Turn the printer on and the print heads will automatically move to the left. Remove the yellow tape seals from the black and color ink cartridges. Do not remove the white label from the top of either ink cartridge. The ink in a cartridge missing the white label will be exposed to air and will thicken such that print head clogging and possible print head failure can occur. If the white label has been removed from an ink cartridge, the cartridge will not function correctly and it will need to be replaced. More importantly, to avoid potential damage to the printer, do not install a cartridge from which the white label has been removed Install the cartridges into the printer, and then press the cleaning button to begin charging the ink delivery system.