Scientific Atlanta Explorer 1840, Руководство по установке

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5
Checking Product Safety
Upon completion of any service or repairs to this product, the
service technician must perform safety checks to determine
that this product is in proper operating condition.
Outdoor Grounding System
If this product connects to an outdoor antenna or cable
system, be sure the antenna or cable system is grounded
(earthed). This provides some protection against voltage
surges and built-up static charges.
Article 810 of the National Electric Code (NEC) ANSI/NFPA
No. 70-1990, provides the following information:
• Grounding of the mast and supporting structure
• Grounding the lead-in wire to an antenna discharge unit
• Size of the grounding conductors
• Location of the antenna-discharge unit
• Connection to grounding electrodes
• Requirements for the grounding electrodes (see the
following antenna grounding diagram as recommended by
NEC ANSI/NFPA 70)
Lightning
For added protection for this product 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. Plugging this product into
a surge protector in order to reduce the risk of damage.
Note: Unplugging this product for an extended period of time
can result in loss of authorization. For reauthorization,
contact your cable service provider.
Power Lines
Do not locate an outside antenna system in the vicinity of
overhead power lines or power circuits. When installing an
outside antenna system, take extreme care to keep from
touching power lines or circuits, as contact might be fatal.
Protecting This Product From Foreign Objects and
Water or Moisture Damage
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.
Do not expose this product to liquids or moisture. Do not
place this product on a wet surface. Do not spill liquids on or
near this product.
Do not use this product near water (such as a bath tub,
wash bowl, sink, or laundry tub), in a wet basement, or near
a swimming pool.
Accessories Warnings
Avoid any potential for electric shock or fire.
Do not use accessories with this product unless
recommended by your cable service provider.
Service Warnings
Servicing This Product
Do not open the cover of this product. If you open the cover,
your warranty will be void. Refer all servicing to qualified
personnel only. Contact your cable service provider for
instructions.
Obtaining Service for Product Damage
For damage that requires service, unplug this product from
the AC outlet. Then, contact your cable service provider or
qualified service personnel to obtain service for the following
conditions:
• If there is damage to the power-supply cord or plug
• If liquid enters this product
• If you expose this product to rain or water
• If you drop this product, a heavy object falls on this
product, or damage occurs to the cover of this product
• If this product does not operate normally by following the
operating instructions
• If this product exhibits a distinct change in performance
WARNING: Avoid electric shock and fire
hazard! Never push objects through the openings
in this product. Foreign objects can cause
electrical shorts that can result in electric shock
or fire. Do not expose this product to rain or
moisture. Do not place objects filled with liquid,
such as vases, on this product.
WARNING: Avoid any potential for electric
shock or fire. Do not use accessories with this
product unless recommended by your cable
service provider.
WARNING: Avoide electric shock! Opening or
removing the cover may expose you to dangerous
voltages. This product contains no user-
serviceable parts. Refer all servicing to qualified
service personnel.
IMPORTANT SAFETY INSTRUCTIONS
,
continued
WARNING: To avoid electric shock, do not locate
an outside antenna system in the vicinity of overhead
power lines or power circuits.