Your Epson Stylus CX8400 Series and its software will let you know when an ink cartridge is low or expended.
If an ink cartridge is low or expended, you see a message on the Epson Stylus CX8400 Series LCD display screen. If a cartridge is expended, you must replace it to be able to print. If a cartridge is low, you can continue printing until a cartridge needs replacement.
Note:
You cannot print or copy when an ink cartridge is expended even if the other cartridges are not expended. Replace any expended cartridges before printing or copying.
You cannot print or copy when an ink cartridge is expended even if the other cartridges are not expended. Replace any expended cartridges before printing or copying.
When an installed ink cartridge is more than six months old, you may need to replace it if your printouts do not look their best, even after cleaning and aligning the print head.