Oki C5400 User Manual page 28

6. Press MENU + to change the setting to ON:
DUPLEX
ON
The second line of the display begins flashing.
Press ENTER to select the new setting:
7.
DUPLEX
ON
An asterisk appears on the second line of the display.
Press ON LINE to engage the new setting and to exit the menu.
8.
The printer returns to standby mode.
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Menu Functions • 26