Epson AcuLaser MX20DNF - Manual (Page 189)

6. Turn the lever to the position as shown below to lock the optional paper cassette unit.
7. Insert the paper cassette back into the unit.
8. Reconnect all the interface cables and the power cord.
9. Plug the printer’s power cord into an electrical outlet.
10. Turn on the printer.
To confirm that the option is installed correctly, print a Status Sheet. See “Printing a Status Sheet” on
page 185.
Epson AcuLaser MX21/MX20 Series User's Guide
Installing Options 189