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• Unplug the TV receiver from the wall outlet and
disconnect the antenna or cable system during a
lightning storm or when left unattended and unused
for long periods of time.This will prevent damage to
the unit due to lightning and power-line surges.
• Avoid overhead power lines.An outside antenna
system should not be placed 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,
be extremely careful to keep from touching the
power lines or circuits. Contact with such lines can
be fatal.
• Do not overload the wall outlet or extension cords.
Overloading can result in fire or electric shock.
• Do not insert foreign objects through openings in the
unit, as they may touch dangerous voltage points or
damage parts. Never spill liquid of any kind on the TV
receiver.
• Ground outdoor antennas. If an outside antenna or
cable system is connected to the TV receiver, 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. 70-1984, 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.
• Do not attempt to service the TV receiver yourself.
Refer all servicing to qualified service personnel.
Unplug the unit from the wall outlet and refer
servicing to qualified service personnel under the
following conditions:
– when the power-supply cord or plug is damaged
– if liquid has been spilled on or objects have fallen
into the unit
– if the TV receiver has been exposed to rain or
water
– if the TV receiver does not operate normally by
following the operating instructions
– if the TV receiver has been dropped or the
cabinet has been damaged
– when the TV receiver exhibits a distinct change in
performance
If you make adjustments yourself, adjust only
those controls that are covered by the operating
instructions.Adjusting other controls may result in
damage and will often require extensive work by a
qualified technician to restore the TV receiver to
normal.
• When replacement parts are required,be sure the
service technician uses replacement parts specified
by the manufacturer or those that have the same
characteristics as the original part. Unauthorized
substitutions may result in additional damage to the
unit.
• Upon completion of any service or repairs to this TV
receiver,ask the service technician to perform safety
checks to determine that the TV receiver is in a safe
operating condition.
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 CLAMP
ELECTRIC
SERVICE
EQUIPMENT
NEC — NATIONAL ELECTRICAL CODE
EXAMPLE OF
ANTENNA GROUNDING