The Sony LLC-5510 is a language laboratory control console that controls the 12 student recorders. The control console is powered ON at the beginning of the day and powered OFF at the end of the day. Wait for all components to appear on the screen. Press PWC on the screen to connect power to the student recorders. Wait for the seating map to appear.
Press MAKE on the screen.
Press ALL on the screen. Press the MIN button to decrease the volume. Press the MAX button to increase the volume. Turn the key counter-clockwise to the OFF position.