DVC20_Eng.book 4 ページ ２００５年１０月３１日 月曜日 午前１０時３６分
Important Safeguards (continued)
13.Outdoor Antenna Grounding — If an outside antenna or cable system is connected to the video unit, be sure the antenna or cable system is grounded so as to provide some protection against voltage surges and builtup static charges. Part 1 of the Canadian Electrical Code, in USA Section 810 of the National Electrical Code, provides information with respect to proper grounding of the mast and supporting structure, grounding of the
| ANTENNA LEAD IN WIRE | |
GROUND |
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CLAMP | ANTENNA DISCHARGE UNIT | |
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| (NEC SECTION | |
ELECTRIC |
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SERVICE | GROUNDING CONDUCTORS | |
EQUIPMENT | ||
(NEC SECTION | ||
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| GROUND CLAMPS | |
NEC – NATIONAL | POWER SERVICE GROUNDING | |
ELECTRODE SYSTEM | ||
ELECTRICAL CODE | ||
(NEC ART 250, PART H) | ||
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14.Lightning — For added protection of this video unit 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 video unit due to lightning and
15.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.
16.Overloading — Do not overload wall outlets and extension cords as this can result in a risk of fire or electric shock.
17.Objects and Liquids — Never push objects of any kind into this video unit 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 onto the video unit.
18.Servicing — Do not attempt to service this video unit yourself as opening or removing covers may expose you to dangerous voltage or other hazards. Refer all servicing to qualified service personnel.
19.Damage Requiring Service — Unplug this video unit from the wall outlet and refer servicing to qualified service personnel under the following conditions:
a.When the
b.If any liquid has been spilled onto, or objects have fallen into the video unit.
c.If the video unit has been exposed to rain or water.
d.If the video 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 video unit to its normal peration.
e.If the video unit has been dropped or the cabinet has been damaged.
f.When the video unit exhibits a distinct change in performance – this indicates a need for service.
20.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.
21.Safety Check — Upon completion of any service or repairs to this video unit, ask the service technician to perform safety checks to determine that the video unit is in safe operating order.
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