Epson EPL-N7000 - Manual (Page 161)

150 Using the PostScript Printer Driver (Macintosh)
To confirm that the setup completed successfully, click Setup in
the Chooser dialog box, and then click Printer Info and Configure
to check the settings.
If the setup did not complete successfully, follow these steps:
1. Return to the dialog box shown above.
2. Click Select PPD. The PPD selection dialog box will be
displayed.
3. Select your printer model, and then click Select.
If you need to cancel the installation of the PPD you selected,
click Cancel. To try to setup the printer again, repeat step 5
above.
Note:
If QuickDrawGX is installed, you must turn it off in the Extensions
Manager before you can use the Adobe PostScript 3 printer driver.
Changing the printer setup settings
You can easily change or update the printer setup settings. They
include the amount of installed memory and whether options
such as the Duplex Unit and lower paper cassette units are
installed on the printer or not.