The ink tank is defective and needs to be replaced.
Solution
Replacing An Ink Tank
Use the following procedure to replace empty ink tanks or when an ink tank error appears.
Confirm that the printer is powered on and open the paper output tray.
Lift the scanning unit (printer cover) completely. (The print head will move to the replacement position.)
Note: When the scanning unit (printer cover) is opened more than ten minutes, the print head moves to the right side. If this occurs, close the scanning unit (printer cover), and open it again.
Open the inner cover.
Press the ink tank's tab, then remove it from the slot.
Unpack the ink tank and pull the orange tape off completely in the direction of the arrow and remove the film.
Note: Tear the orange tape carefully along the dotted line. If the orange tape remains, printing problems may occur.
<4> Tape is completely removed.
<5> Tape remains. Remove the orange protective cap located on the bottom of the ink tank by twisting as shown in the diagram.
CAUTION: Do not touch the ink tank contact <6>. Doing so may cause printing problems. Do not squeeze the side of ink tanks as this may cause the ink to leak out. Do not reattach the protective cap once you have removed it.
Insert ink tanks into the print head.
NOTE: Press the mark <PUSH> on the ink tank firmly until you hear a click.
Ensure that all the ink tanks are installed properly and the ink tank lamps light red.