6
Antennas
Outdoor Antenna Grounding
If an outdoor antenna is installed, follow the precautions below. An
outdoor antenna system should not be located in the vicinity of overhead
power lines or other electric light or power circuits, or where it can come
in contact with such power lines or circuits.
WHEN INSTALLING AN OUTDOOR ANTENNA SYSTEM,
EXTREME CARE SHOULD BE TAKEN TO KEEP FROM
CONTACTING SUCH POWER LINES OR CIRCUITS AS CONTACT
WITH THEM IS ALMOST INVARIABLY FATAL.
Be sure the antenna system is grounded so as to provide some protection
against voltage surges and built-up static charges.
Section 810 of the National Electrical Code (NEC) in USA and Section 54
of the Canadian Electrical Code in Canada provides 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 discharge unit, connection to
grounding electrodes, and requirements for the grounding electrode.
Antenna Grounding According to the National
Electrical Code, ANSI/NFPA 70
Lightning
For added protection for this television 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. This will prevent damage
to the receiver due to lightning and power-line surges.
Service
Damage Requiring Service
Unplug the set from the wall outlet and refer servicing to qualified service
personnel under the following conditions:
s
When the power cord or plug
is damaged or frayed.
s
If liquid has been spilled into
the set.
s
If the set has been exposed to rain or water.
s
If the set has been subject to excessive shock by
being dropped, or the cabinet has been
damaged.
s
If the set does not operate normally when
following the operating instructions. Adjust only
those controls that are specified in the operating
instructions. Improper adjustment of other
controls may result in damage and will often
require extensive work by a qualified technician
to restore the set to normal operation.
s
When the set exhibits a distinct change in
performance, it indicates a need for service.
Servicing
Do not attempt to service the set yourself since opening the
cabinet may expose you to dangerous voltage or other
hazards. Refer all servicing to qualified service personnel.
Replacement Parts
When replacement parts are required, be sure the service
technician certifies in writing that he/she has used
replacement parts specified by the manufacturer that
have the same characteristics as the original parts.
Unauthorized substitutions may result in fire, electric
shock or other hazards.
Safety Check
Upon completion of any service or repairs to the set, ask the
service technician to perform routine safety checks (as
specified by the manufacturer) to determine that the set is in
safe operating condition, and to so certify. When the set
reaches the end of its useful life, improper disposal could
result in a picture tube implosion. Ask a qualified service
technician to dispose of the set.
For Safety
Be careful when moving the TV
When you place the TV in position, be careful
not to drop it on your foot or fingers.
Watch your footing while installing the TV.
Antenna lead-in wire
Antenna discharge unit
(NEC Section 810-20)
Grounding conductors
(NEC Section 810-21)
Ground clamps
Power service grounding
electrode system
(NEC Art 250 Part H)
Ground clamps
Electric service
equipment
NEC: National Electrical Code
