40 OKI C9000 SeriesDuplex unitIf your printer includes the duplex unit, please use thefollowing procedure to make sure that duplex printinghas been enabled in the printer and printer driver.Printer1. Press Menu (0) button until PRINT MENU isdisplayed, then press Select (3) button.2. Press Item (1) button until DUPLEX isdisplayed.3. Press Value (2) button until ON is displayed andpress Select (3) button. An asterisk (*) appears toshow that duplex has been set to on.4. Press Online (4) button to turn the printer backon line.Printer driverWindows 2000/NT 4.0 PostScript1. Click on [Start] - [Settings] - [Printers].2. Highlight the printer name and click on [File]then [Properties].3. Click on [Device Settings] tab.4. Highlight [Duplex], then select [Installed] andclick on [OK].Windows 2000 PCL1. Click on [Start] - [Settings] - [Printers].2. Highlight the printer name and click on [File]then [Properties].9000GBS.book Page 40 Wednesday, December 6, 2000 10:07 AM