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301
Technical Notes
12
For Your Safety
An appliance and cart
combination should be
moved with care. Quick
stops, excessive force, and
uneven surfaces may cause
the appliance and cart
combination to overturn.
Antennas
Antennas
Outdoor Antenna Grounding: If an outside antenna
or cable system is connected to the video product,
be sure the antenna or cable system is grounded
so as to provide some protection against voltage
surges and built-up static charges. Section 810 of
the National Electrical Code, ANSI/NFPA No. 70, pro-
vides information with respect to proper grounding
of the mast and supporting structure, grounding of
the lead-in wire to an antenna discharge unit, size
of grounding conductors, location of antenna dis-
charge unit, connection to grounding electrodes,
and requirements for the grounding electrode.
EXAMPLE OF ANTENNA GROUNDING AS PER
NATIONAL ELECTRICAL CODE
Power Lines: An outside antenna system should not
be located in the vicinity of overhead power lines
or other electric light or power circuits, or where
it can fall into such power lines or circuits. When
installing an outside antenna system, extreme care
should be taken to keep from touching such power
lines or circuits as contact with them might be fatal.
Use
Use
Cleaning: Unplug this video product from the wall
outlet before cleaning. Do not use liquid cleaners
or aerosol cleaners. Use a damp cloth for cleaning.
Object and Liquid Entry: Never push objects of any
kind into this video product through openings as
they may touch dangerous voltage points or short
out parts that could result in a fi re or electric shock.
Never spill liquid of any kind on the video product.
Lightning: For added protection for this video
product receiver during a lightning storm, or
when it is left unattended and unused for long
periods of time, unplug it from the wall outlet
and disconnect the antenna or cable system. This
will prevent damage to the video product due to
lightning and power-line surges.
Service
Service
Servicing: Do not attempt to service this video prod-
uct yourself as opening or removing covers may
expose you to dangerous voltage or other hazards.
Refer all servicing to qualifi ed service personnel.
Damage Requiring Service: Unplug this video product
from the wall outlet and refer servicing to qualifi ed
service personnel under the following conditions:
•
When the power-supply cord or plug is damaged
•
If liquid has been spilled, or objects have fallen
into the video product.
•
If the video product has been exposed to rain
or water.
•
If the video product has been dropped or the
cabinet has been damaged.
If the video product does not operate normally
follow the operating instructions. Adjust only
those controls that are covered by the operating
instructions as an improper adjustment of other
controls may result in damage and will often re-
quire extensive work by a qualifi ed technician to
restore the video product to its normal operation.
When the video product exhibits a distinct change
in performance — this indicates a need for service.
Ground Clamp
Electric Service
Elec
t
Equipment
A
A
ntenn
a
Le
ad
in
W
ir
e
A
A
Antenna
An
t
Discharge Unit
D
(NEC SECTION
N
810-20)
Ground Clamps
Power Service Grounding
Electrode System (NEC
ART 250. PART H)
Groun
d
in
g
Con
d
uctors
(
NEC
SECTION 810-21
)
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