HP Deskjet 6540 Color Inkjet Printer - Manual (Page 173)

1. Tilt the Small Paper Tray
2. Open the lower door
6. Remove any paper that is inside the accessory.
7. Close the accessory, and then secure the back lever to close the accessory.
8. Re-attach the accessory to the printer.
Option for automatic two-sided printing cannot be selected
Verify the following:
• The duplexer is attached to the printer, and the duplexer is enabled in Chooser.
• A supported paper size is selected in the Page Setup dialog box.
• A supported paper type is selected in the Paper Type/Quality panel of the
Print dialog box.
For a list of support paper types and sizes, see the duplexer specifications .
Paper size changes when the two-sided printing option is selected
The paper size is not supported by the duplexer .
HP Deskjet 6500 series printers User's Guide
173