HP LaserJet 9050 Printer series - Manual (Page 45)

ENWW Loading input trays 43
4 Load (orient) the paper according to size.
Note See Orienting media for instructions on loading preprinted, letterhead, and prepunched paper.
5 Adjust the left paper guide by pressing the tab on the guide and sliding the guide until it
gently touches the paper.
6 Adjust the front paper guide by pressing the tab on the guide and sliding the guide until it
gently touches the paper.
Note When loading Tray 4, make sure that the paper guide lock is in the up position.