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IMPORTANT SAFEGUARDS
14. 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 onto or against 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.
15. OVERLOADING
Do not overload wall outlets and extension cords, as this can result in a risk of fire or electric shock.
16. OBJECT AND LIQUID ENTRY
Do not push objects through any openings in this unit, as they may touch dangerous voltage points or short out parts
that could result in fire or electric shock. Never spill or spray any type of liquid into the unit.
17. OUTDOOR ANTENNA GROUNDING
If an outside antenna or cable system is connected to the unit, be sure the antenna or cable system is grounded to
provide some protection against voltage surges and built-up static charges, Section 810 of the National Electrical
Code (NEC), ANSI/NFPA 70, 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.
Introduction
EXAMPLE OF ANTENNA
GROUNDING AS PER THE
NATIONAL ELECTRICAL CODE
ANTENNA DISCHARGE UNIT
(NEC SECTION 810-20)
ANTENNA LEAD IN WIRE
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
S2898A
18. SERVICING
Do not attempt to service this unit yourself, as opening or removing covers may expose you to
dangerous voltage or other hazards. Refer all servicing to qualified service personnel.
For example:
a. When the power-supply cord or plug is damaged.
b. If liquid has been spilled, or objects have fallen into the unit.
c. If the unit has been exposed to rain or water.
d. If the unit 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 unit to
its normal operation.
e. If the unit has been dropped or the cabinet has been damaged.
f. When the unit exhibits a distinct change in performance, this indicates a need for service.
19. REPLACEMENT PARTS
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 fire, electric shock or other hazards.
20. SAFETY CHECK
Upon completion of any service or repairs to this unit, ask the service technician to perform safety checks to
determine that the unit is in proper operating condition.
21. HEAT
The product should be situated away from heat sources such as radiators, heat registers, stoves, or other products
(including amplifiers) that produce heat.
J3U70221A(E)P02-10 05/08/2005, 10:13 AM4