Brother HL 2700CN - Manual (Page 65)

3 - 8 CONTROL PANEL
For example: If you only use Tray 1 to print from, change the SOURCE setting to TRAY1,
as follows:
Press any of the Menu buttons (+, -, Set or Back) to take the printer
off-line.
Press the + or - button to move forward or backward through the
menus until PAPER is displayed.
Press the Set button to move to the next menu level.
Press the Set button.
Press the + button.
Press the Set button.
An asterisk * briefly appears at the end of the display.
The default setting is indicated by an *.
READY
--MENU--
INFORMATION
--MENU--
PAPER
PAPER
SOURCE
SOURCE
=AUTO *
SOURCE
=TRAY1
SOURCE
=TRAY1