moving the elevation control, figure 7-17(9). For
an external screen, the image can be centered
horizontally by moving the entire projector from
side to side.
Adjust the speed control, (17) in figure 7-17,
to the correct speed for the film to be projected,
18 or 24 fps. Be sure the projector is running
when this adjustment is made. You are now
ready to thread the film.
Threading is extremely simple with this pro-
jector. Follow the slot with the master control
from OFF to STILL, pause momentarily, then
move the master control along the slot into
THREAD and to FORWARD.
FORWARD OPERATION.—When the
self-contained screen is used, the room does not
have to be darkened. Projection is possible in a
normally lighted room. However, if an external
screen is used, be sure to check the light level in
the presentation room. Focus the image by
rotating the focus control, figure 7-17(15), and
frame the image with the frame control (14).
Adjust the volume level to a comfortable listen-
ing level with the volume control (10). If a silent
film is being projected, turn the volume control
all the way counterclockwise to eliminate any
possible background noise.
STILL.—This projector is equipped to show
single frames, if desired. Move the master con-
trol from FORWARD to STILL. You may
move the film a short distance by moving the
master control approximately halfway from
STILL to FORWARD and back to STILL,
FILM REVIEW.—To review a portion of
film that has already been projected, move the
master control from FORWARD to REVIEW.
When you reach the portion of film you wish to
review, move the master control back to STILL,
and then to FORWARD to resume projection.
REWIND PROCEDURE.—This projector
is equipped with an automatic rewind
mechanism. This mechanism operates when the
entire length of film has been projected. You
are, however, able to rewind the film before it
has been projected by following the procedures
for reviewing.
After the film has been rewound into the car-
tridge, move the master control to REVIEW to
check the image, if nothing but light appears on
the screen, then the film is totally rewound.
Move the master control to OFF, remove the
cartridge, and prepare the projector for storage.
C A R E A N D M A I N T E N A N C E . — T h e
8-mm projector, like all other AV equipment,
requires preventive maintenance to ensure a
long, useful life of the projector for your AV
facility. The projection lamp, lens, and mirrors
require careful handling to prevent damage. For
example, the projection lamp will burn out if the
projector is subjected to rough treatment while
in operation.
The lens must be kept clean since fingerprint
smudges and a heavy coating of dust will reduce
the image brightness and clarity. Consult the
technical order or the manufacturer’s manual
for specific instructions on how to accomplish
this or any other specific maintenance pro-
cedures.
There are two mirrors on this projector
which deserve special consideration and care.
They are front-surface mirrors. That is, the
reflective surface is on the front of the glass. A
front-surface mirror does not reduce image
brightness or clarity which is a problem of con-
ventional mirrors; however, even a small
amount of dust or a fingerprint smudge can
affect the brightness of the image. Small
scratches do not affect the brightness of the
image even though they may be visible when you
look directly at the mirror.
These front-surface mirrors are cleaned with
an approved lens cleaner and lens tissue. When
maintenance is being performed on the projec-
tor, cover the mirror in front of the lens with a
soft tissue to prevent damage.
AUDIO EQUIPMENT
As a Religious Program Specialist, you will
operate not only projection equipment but also
audio equipment. This equipment ranges from
public address systems to audio tape recorders.
You will come into contact with this type of
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