Install the duplexer, Enable the duplexer – HP Deskjet 6940 User Manual
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The duplexer only supports certain paper types. For a list of supported paper types, see
the documentation that came with the duplexer.
Install the duplexer
Follow these steps to attach the duplexer to the printer:
1.
Push the two latch handles on the printer's rear access door toward each other, and
then remove the door.
Note
Do not discard the rear access door. In order to print, either the
duplexer or the rear access door must be attached to the printer.
2.
Insert the duplexer in the back of the printer until both sides snap into place.
Note
Do not press the buttons on either side of the duplexer when installing
it in the printer. Use the buttons only when removing the duplexer from the
printer.
Enable the duplexer
Follow these step to enable the duplexer:
1.
Open the printer
2.
Click the Configuration tab.
3.
Click Automatic Two-Sided Printing Module or Auto Two-Sided Print
Accessory with small paper tray, and then click Apply.
User's guide
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