LG CC990M Owner's Manual page 5

14.Outdoor Antenna Grounding
If an outside antenna or cable system
is connected to the product, be sure
the antenna or cable system is
grounded so as to provide some
protection against voltage surges and
built-up static charges. Article 810 of
the National Electrical Code (U.S.A),
ANSI/NFPA 70 provides information
with regard 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. (See figure 1 on the right.)
15.Lightning
For added protection for this 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 product due to
lightning and power-line surges.
16.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.
17.Overloading
Do not overload wall outlets and
extension cords as this can result in a
risk of fire or electric shock.
18.Object and Liquid Entry
Never push objects of any kind into
this product through openings as they
may touch dangerous voltage points
or short-out parts that could result in a
fire or electric shock. Never spill liquid
of any kind on the product.
19.Servicing
Do not attempt to service this product
yourself as opening or removing
covers may expose you to dangerous
voltage or other hazards. Refer all
servicing to qualified service
personnel.
20.Damage Requiring Service
Unplug this product from the wall
outlet and refer servicing to qualified
service personnel under the following
conditions:
a. If the power-supply cord or plug is
damaged.
b. If liquid has been spilled, or objects
have fallen into the product.
c. If the product has been exposed to
rain or water.
d. If the product does not operate
normally by following 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 require extensive work by
a qualified technician to restore the
product to its normal operation.
e. If the product has been dropped or
the cabinet has been damaged.
f. If the product exhibits a distinct
change in performance.
21.Replacement Parts
When replacement parts are required,
be sure the service technician has
used replacement parts specified by
the manufacturer or have the same
characteristics as the original part.
Unauthorized substitutions may result
in fire, electric shock, or other
hazards.
22.Safety Check
Upon completion of any service or
repairs to this product, ask the service
technician to perform safety checks to
determine that the product is in proper
operating condition.
23.Wall or Ceiling Mounting
The product should be mounted to a
wall or ceiling only as recommended
by the manufacturer.
24.Heat
The product should be situated away
from heat sources such as radiators,
heat registers, stoves, or other
products (including amplifiers) that
produce heat.
Figure 1
EXAMPLE OF GROUNDING ACCORDING TO
NATIONAL ELECTRICAL CODE INSTRUCTIONS
Ground
Clamp
Electric Service
Equipment
NEC - NATIONAL ELECTRICAL CODE
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)
5