Canon C50i Instruction Manual - Page 8

a Safe Use of Equipment antenna discharge unit, connection to grounding electrodes, and requirements for the grounding electrode. See figure 1. fig-1 EXAMPLE OF ANTENNA GROUNDING AS PER NATIONAL ELECTRICAL CODE ANTENNA LEAD IN WIRE GROUNDING CLAMP ELECTRIC SERVICE EQUIPMENT ANTENNA DISCHARGE UNIT (NEC SECTION 810-20) GROUNDING CONDUCTORS (NEC SECTION 810-21) GROUNDING CLAMPS NEC - NATIONAL ELECTRIC CODE POWER SERVICE GROUNDING ELECTRODE SYSTEM (NEC ART 250. PART H) 13. Lightning - For added protection of this equipment during a lightning storm, or when it is left unattended and unused for long periods of time, disconnect it from the wall outlet and disconnect the antenna. This will prevent damage to the equipment due to lightning and power-line surges. 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 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. 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 - Never push objects of any kind into this equipment through openings as they may touch dangerous voltage points or short out parts that could result in a fire or electric shock. Be careful not to spill liquid of any kind onto the equipment. 17. Servicing - Do not attempt to service this equipment yourself as opening or removing covers may expose you to dangerous voltage or other hazards. Refer all servicing to qualified personnel. 18. Damage Requiring Service Disconnect this equipment from the wall outlet and all power sources including batteries, and refer servicing to qualified service personnel under the following conditions. a. When the power-supply cord or plug is damaged. b. If any liquid has been spilled onto, or objects have fallen into, the equipment. c. If the equipment has been exposed to rain or water. d. If the equipment does not operate normally even if you follow the operating instructions. Adjust only those controls that are covered by the operation instructions. Improper adjustment of other controls may result in damage and will often require extensive work by a qualified technician to restore the equipment to its normal operation. e. If the equipment has been dropped or the cabinet has been damaged. f. When the equipment 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 has used replacement parts that are specified by Canon or that have the same characteristics as the original part. Unauthorized substitutions may result in fire, electric shock or other hazards. 8