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 built-up static charges. Part 1 of the Canadian Electrical Code, in USA Section 810 of the National Electrical Code, provides infor- mation 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 dis- charge unit, connection to grounding electrodes, and requirements for the grounding electrode.

 

ANTENNA LEAD IN WIRE

GROUND

 

CLAMPS

ANTENNA DISCHARGE UNIT

 

 

(NEC SECTION 810-20)

ELECTRIC

 

SERVICE

GROUNDING CONDUCTORS

EQUIPMENT

(NEC SECTION 810-21)

 

GROUND CLAMP

 

POWER SERVICE GROUNDING

NEC — NATIONAL

ELECTRODE SYSTEM

(NEC ART 250, PART H)

ELECTRICAL CODE

 

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 power-line surges.

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 touch- ing 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 qual- ified service personnel under the following condi- tions:

a.When the power-supply cord or plug is dam- aged.

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 operation.

e.If the video unit has been dropped or the cabi- net has been damaged.

f.When the video unit exhibits a distinct change in performance — this indicates a need for ser- vice.

20.Replacement Parts — When replacement parts are required, be sure the service technician has used replacement parts specified by the manufac- turer or have the same characteristics as the origi- nal 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 techni- cian to perform safety checks to determine that the video unit is in safe operating order.

4