Epson Stylus 300 User Manual page 24

3. Hold down the REPLACE INK button until the carriage moves
to the middle of the printer.
4. Release the button. The PAUSE light begins blinking.
5. Open the package containing the ink cartridge.
6. Remove the shipping cap from the ink cartridge by pushing it
on the right side carefully with your finger. Then remove
the tape from the ink cartridge.
1 - 1 0 Setting Up Your Printer