C7100/C7300/C7500 Windows NT 4.0 Printer Drivers • 287
For the duplex unit
PostScript driver
1. Click Start ® Settings ® Printers.
2. Highlight the printer name and click File then Properties.
3. Click the Device Settings tab. Under Installable Options, make
sure that Duplex is set to Installed.
4. Click OK and close the Printers dialog box.