Epson Stylus Pro 7450 User Manual page 254

Note:
If CONVERSION CRTG LIFE. REPLACE CONVERSION CRTG WITH
A NEW ONE. appears on the LCD panel, press the Pause
button.
Remove the old conversion cartridge(s) from the right ink
compartment, and then insert the new conversion cartridge(s).
Finally, go to step 4 to start again.
254
Maintenance and Transportation