Canon P 400 - Manual (Page 13)

Pre-Adjusting for Projection
The power switch of the projector is 4-way system. When
turned to the red dot, the motor is on: and starts func­
tioning by turning to "FWD. & REW”. The lump lights
up by turning the switch knob to "LUMP”. Do not turn
the switch knob abruptly.
1 Set up the projection screen.
2 Remove the lens cap.
3
Turn the switch knob to "LAMP" to see whether the
picture is projected properly onto the screen evenly
illuminated.
k Make the height adjustment by turning the angle "ad-
' justing leg.
C Determine the projection size by rotating the lens
^ barrel of the zoom lens.
C Adjust the focus by turning the focusing knob until the
^ frames of the projected beam become sharp.