Yamaha RX-497 - Manual (Page 53)

20 Replacement Parts - When replacement parts are required,
he sure Ihe service technician has used replacement parts
specified hy the manufacturer or have the same
characteristics as the original pari. Unauthorized
substitutions may result in fire, electric shock, or other
hazards.
21 Safety Check - Upon completion of any service or repairs to
this product, ask the service technician to perform safety
checks to determine that the product is in proper operating
condition.
22 Wall or Ceiling Mounting - The unit should he mounted to a
wall or ceiling only as recommended by ihe manufacturer.
23 Heat - The product should be situated away from heal
sources such as radiators, heat registers, stoves, or other
products (including amplifiers) that produce heat.
24 Outdoor Antemia Grounding - If an outside antenna or
cable system is connected to the product, be sure the antenna
or cable system is grounded so as to provide some
protection againsl voltage surges and built-up static charges.
Article 810 of the Nalional Electrical Code, AN.SI/NFPA 70.
provides iiiformalion with regard to proper grounding of the
mast and supporting structure, grounding of the lead-in wire
to an antenna discharge unit, size of grounding conductors,
locaiion of antenna discharge unit, connection to grounding
electrodes, and requirements for the grounding electrode.
EXAMPLE OF ANTENNA GROUNDING
NEC - NATIONAL ELECTRICAL CODE
YAMAHA CORPORATION
Printed in Malaysia c WG63450