19.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.
20.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.
21.Wall or Ceiling Mounting - The product should be mounted to a wall or ceiling only as recommended by the manufacturer.
22.Heat - The product should be situated away from heat sources such as radiators, heat registers , stoves, or other objects (including amplifiers) that produce heat.
23.Nonuse Periods - Unplug the product’s power cord when you will not be using it for an extended period.
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