The Epson Stylus DX7400 is a multifunction printer. In addition to routine black-and-white, and colour printing--it also acts as a scanner, copier and photo printer. The printer uses separate cartridges for each ink colour, so you only need to replace individual colours as they deplete. Since the Epson Stylus DX7400 cannot print if any one of its ink cartridges is empty, it's important to keep a close eye on ink levels, and replace cartridges as soon as possible. When a cartridge is nearly depleted, a light turns on next to the image of a droplet of ink, on the front panel of the printer.
Lift the top of the printer and tilt it upwards, exposing the ink cartridges inside.
Push the "Stop" button. After a few moments, the printer will automatically align the empty cartridge with the image of an ink droplet with a slash through it.
Push the "Stop" button a second time. The printer will either move the next depleted cartridge to the empty ink icon, or it will move the cartridges all the way to the right, so you can reach in to replace them. Continue pushing "Stop" until the cartridges are in the replacement position.
Wait until the cartridges stop moving entirely. Open the cartridge cover by pulling it towards you.
Squeeze the tab next to the depleted cartridge. Pull up and remove the cartridge.
Shake the new ink cartridge in your hand a few times. Open the package carefully, making sure not to touch the green chip or remove the seal.
Remove the yellow tape on the top of the ink cartridge carefully.
Push the ink cartridge down into the compartment until you hear a click. Push the cover back down into place until you hear a click.
Return the top of the unit to its original position.
Push the "Stop" button. The printer will recalibrate and be ready for printing in a few moments.
Wash your hands immediately with soap and water if any ink gets on them. Avoid touching your mouth, eyes or clothing.