Projector Components
Projector Components Diagram
Slot for Kensington Lock
Power switch
AC power
Intake ventilation 
Control panel
Reset
Keystone
Input
Standby/ON
Front foot adjuster
Air intake
(for the cooling fan)
Speaker
Rear foot adjuster
Remote control sensor
Component Video
Y(In) CB/PB (In) CR/PR (In)
Zoom knob
Focus ring
Remote control sensor
Lens (with lens cap)
Lamp indicator
Temp indicator
Power indicator
Menu
Exhaust ventilation
Interface panel
RGB (In)
Control (RS232)
Audio (In, 3.5 mm)
R Audio (In)
L Audio (In)
Video (In)
Figure 2: Projector Components
3 ViewSonic PJ501/PJ551
