When you open the lid and the carriage moves to the center, With the lid still up, Press the button above the power button, if the carriage does not return and start printing, the printer is detecting a cartrige connection error. This may be due to ink on the contacts (you can clean with a paper towel, damp as needed to remove ink) or it's a bad print head. If you are using refills it's likely a head failure. In far less than 1 out of 100 is the printer actually bad.