Brother HL-8050N - Printing on A4;Letter Paper from the Paper Tray

USABLE PAPER TYPES AND PRINTING METHOD 2 - 11
8 Push the paper tray completely into the printer.
.
Printing on A4/Letter Paper from the Paper Tray
1 Start printing from your program after loading A4 or letter paper in the printer.
<PCL driver>
<PS driver>
Select the Paper Size,
Media Type and so on.
Select Tray1.
Select the Paper Size.
Select Tray1.