4IntroductionIMPORTANT SAFEGUARDS13. LIGHTNINGTo protect your unit from 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 theunit due to lightning and power line surges.14. POWER LINESAn outside antenna system should not be located in the vicinity of overhead power lines or other electriclight or power circuits, or where it can fall onto or against such power lines or circuits. When installing anoutside antenna system, extreme care should be taken to keep from touching such power lines or circuits,as contact with them might be fatal.15. OVERLOADINGDo not overload wall outlets and extension cords, as this can result in a risk of fire or electric shock.16. OBJECT AND LIQUID ENTRYDo not push objects through any openings in this unit, as they may touch dangerous voltage points or shortout parts that could result in fire or electric shock. Never spill or spray any type of liquid into the unit.17. OUTDOOR ANTENNA GROUNDINGIf an outside antenna or cable system is connected to the unit, be sure the antenna or cable system isgrounded to provide some protection against voltage surges and built-up static charges, Section 810 of theNational Electrical Code, ANSI/NFPA 70, provides information with respect to proper grounding of the mastand supporting structure, grounding of the lead-in wire to an antenna discharge unit, size of groundingconductors, location of antenna discharge unit, connection to grounding electrodes, and requirements forthe grounding electrode.EXAMPLE OF ANTENNA GROUNDING AS PER THENATIONAL ELECTRICAL CODEANTENNADISCHARGE UNIT(NEC SECTION 810-20)ANTENNA LEAD IN WIREGROUNDING CONDUCTORS(NEC SECTION 810-21)GROUND CLAMPSPOWER SERVICE GROUNDINGELECTRODE SYSTEM(NEC ART 250, PART H)GROUND CLAMPELECTRIC SERVICEEQUIPMENTNEC-NATIONAL ELECTRICAL CODES2898A18. SERVICINGDo not attempt to service this unit yourself as opening or removing covers may expose you to dangerousvoltage 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 thatare covered by the operating instructions, as an improper adjustment of other controls may result in damageand 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.2I30101B-En_p02-131/12/06, 17:044
Guru