How Do I Change My Ink Cartridge In My HP Photosmart C3180 All In One?
I am not familiar with the HP C3180, but I have other photosmart models. Make sure that the unit is powered (plugged in), turn it on, on front panel, the cartridge carrier should move into the center position allowing you to access the ink cartridges. Every HP that I have ever owned has had the ink cartridge diagram on the inside of the access panel.