Xerox 4520 User Manual page 49

You have a HCF installed. You want to load as much paper in
Example 2
the printer as possible. You use only one size of paper.
1. Load the HCF, upper, middle, and lower trays with
2. Set Source Mapping for "Upper" to "HCF-Up-Mid-Low."
3. In either your software application or the Xerox printer
The printer will pull paper from the HCF until it is empty,
then from the upper tray until is it empty, then from the
middle tray until it is empty, and finally from the lower tray.
As soon as the HCF, upper, or middle tray is reloaded, the
printer will pull paper from them again.
S e l e c t i n g a P a p e r S o u r c e
regular paper stock.
driver, set paper source to the upper tray.
C h a p t e r 2 : H a n d l i n g P a p e r 2-37