HP Deskjet 6540 Color Inkjet Printer - Manual (Page 141)

If the border appears above the tear-off tab, then align the print cartridges .
15.9 Error messages
Out of paper message
If the In tray or optional lower tray contains paper
1. Verify the following:
• There is sufficient paper in the paper tray (at least ten sheets).
• The paper tray is not overly full.
• The paper stack is touching the back of the paper tray.
2. Slide the paper guides so that they fit firmly against the edges of the paper.
3. Press the Resume button to continue printing.
If the In tray or optional lower tray is empty
1. Load paper in the tray.
HP Deskjet 6500 series printers User's Guide
141