HP Deskjet 5850 Color Inkjet Printer - Manual (Page 99)

4. Gently place the printer on top of the paper tray.
using the 250-sheet plain paper tray accessory
accessory description
The 250-Sheet Plain Paper Tray Accessory has two parts.
1. base 2. lower tray
The lower tray has three size adjusters.
1. paper width guide 2. paper width fence 3. paper length guide
When changing the paper size in the paper tray, you must set all
three paper guides .
setting the paper size
When changing the paper size in the paper tray, all three paper guides must be set to
the correct setting.
Follow these steps to set the paper size:
1. Remove the lower tray from the base.