cartridge holder and slide the cartridge into posi-
tion. You can project the filmstrip without the
cartridge by placing the filmstrip roll in the car-
tridge holder with the leading edge of the film
feeding from the top. Replace the cartridge lock
and close the front access door. You are now
ready for focusing, framing, and advancing the
OPERATION.The projector power switch
is on the top of the projector directly behind the
It is a three-way switch
operating the fan in the COOL position and
both the fan and the lamp in the LAMP posi-
tion. Turn the film advance knob counter-
clockwise until an image appears on the screen.
Adjust the focus until the image is sharp. Frame
the image by moving the framing level to either
side until the full image is on the screen.
You must center and level the image. This
projector has a tilt knob which adjusts the eleva-
tion of the image. Raise or lower the projector
by turning the knob counterclockwise. This
releases the spring-tensioned foot. Lock this
foot by turning the knob clockwise. Level the
projector by applying downward pressure to
either of its sides. The projector is now set up.
After completion of the presentation, rewind
the filmstrip by the rewind crank. Open the
rewind crank from the film advance knob.
CLEANING AND MAINTENANCE.
Preventive maintenance is the best way to keep
any piece of AV equipment in top operating con-
dition. To clean the optics of the projectors,
open the lamp house cover, after first discon-
necting the power cord. Remove the lamp house
by loosening the release screw on the lamp house
cover. The various condensers and heat filters
are held in place by a spring clip which, in turn,
is held in place by a screw. After loosening the
screws, lift out the spring clip. Remove the
optics and clean them with a lint-free cloth,
moistened with lens cleaner. Reverse the
removal process to replace the optics in the pro-
jector. Clean the lens in the same manner that
you clean the other optics. The film track and
pressure plate should be wiped with a clean, lint-
free cloth moistened with acetone or alcohol,
These solvents are very good for removing dirt
and emulsion from the film path.
MOTION PICTURE PROJECTORS
As a Religious Program Specialist, you will
normally be required to operate motion picture
projectors. A projectionist is a key member of a
presentation team responsible for the operation,
cleanliness, and routine maintenance of the
audiovisual equipment, and the general appear-
ance of the presentation room. Whether an
audience profits from a presentation depends, to
a large extent, on you. In order to assure a pro-
fessional presentation, you must maintain high
standards at all times because you control the
projection and sound reproduction equipment.
You should also refer to ART 1410440,
MILPERSMAN, which states how you may
become designated as a motion picture operator.
Programmed courses of instruction are available
which can provide the information necessary to
become a qualified 16-mm projector operator,
which will satisfy, in part, the requirements of
ART 1410440, MILPERSMAN. These courses
may be obtained through your Educational
Principles of the Motion Picture
The motion picture is, in reality, a series of
still pictures, projected successively at such a
rate of speed that it gives the illusion of motion.
When the, eye is permitted to see an object for an
instant after which the object is removed and
obscured, the eye will continue to see an image
of the object for approximately one-fortieth of a
second thereafter. This is called the persistence
of vision. If a series of still pictures is projected,
in which the same object is seen in a slightly dif-
ferent position in each picture, the eye will
merge the sequence into one continuous motion.
The purpose of a motion picture projector is to
project a sequence of images upon a screen.
However, the projector not only projects the
pictures on the screen, but it synchronizes sound
with the picture.
16-mm Motion Picture Projector
The most common size of film produced and
employed by the Navy for motion pictures is the