LESSON 3
DESCRIBE OPERATOR'S MAINTENANCE OF AN ENG/EFP SYSTEM
TASK
Describe how to clean videotape recorder/reproducer heads, how to perform
operator's maintenance of camera cables and connectors and operator's
maintenance on a zoom lens.
CONDITIONS
Given information and illustrations about terms relating to the operator
maintenance of the ENG/EFP system.
STANDARDS
Demonstrate competency of the task skills and knowledge by correctly
responding to 85 percent of the multiple-choice test covering theory and
maintenance of the ENG/EFP systems.
REFERENCES
None
Learning Event 1:
CLEAN VIDEO RECORDER/REPRODUCER HEADS
1.
Performance of maintenance on the ENG/EFP system is the responsibility
of the operator to ensure that the equipment is always ready to perform its
task.
Maintenance can prevent loss of manhours as well as save money on
down time, which is very important for every military application.
a. All VRs tend to accumulate deposits of dirt on the spinning video
heads, the static heads, and the rollers. The dirt is an amalgam of oxide,
dust, and grease, which is ventilated into the machine with cool air. After
about 30 hours of play this dirt will produce noticeable degradation in the
picture, drop-out, streaking, and video noise.
(1) Quite a wide variety of so-called cleaning cassettes are
available, but they should be chosen and used with great care, since they
are abrasive, and in the process of cleaning the heads shorten the life of
the heads.
(2) The manual method used for cleaning reel-to-reel heads can apply
to the VR system. It is important to note that the heads are more sensitive
than that of audio heads and more costly.
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