Epson WF-6590 User Manual page 120

User's Guide
2. Push the ink cartridge that you want to replace.
The ink cartridge will pop out slightly.
3. Remove the ink cartridge from the printer.
4. Remove the new ink cartridge from its package.
Important:
c
Do not touch the sections shown in the illustration. Doing so may prevent normal operation and printing.
Replacing Ink Cartridges and Other Consumables
120