Once I figured out how to open the printer and release the mechanism then I had to find out how to install the new ink cartridges for the first time. No help from the meager instructions received with the machine so ... on to the Internet and the fabulous Search method. Wallah I now knew how to operate the printer machine to change cartridges. No wait. Another release button had to be discovered - only my daughter knew this trick. By trial and error my new ink cartridges were installed and I was able to print copies once again.