Xerox Phaser 3635 - Manual (Page 179)

11 Setups
Xerox Phaser 3635 User Guide 173
Tools > Paper Tray Management > Paper Setting > Default Paper Size
Set Altitude
The xerographic process used in your machine to make prints is affected by air
pressure. Air pressure is determined by the height of the machine above sea level.
The machine will automatically compensate for differences in air pressure if you
enable the feature.
Tools > Device Settings > General > Altitude Adjustment
Setting the altitude enables the machine to operate effectively and maximises
performance.