Epson Stylus Pro 4400 Reference Manual page 299

Note:
If you install an ink cartridge in the wrong slot, NO INK CRTG
appears on the LCD. Make sure that the correct ink cartridge is
installed in the correct slot.
8. Close the ink compartment cover. The printer returns to the
previous status.
Note:
If you have installed 220 ml ink cartridge, do not close the ink
compartment cover.
Maintenance and Transportation
7
7
7
7
7
7
7
7
7
7
7
7
299