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18. Object and Liquid Entry — Never push objects of any kind into this product through
openings as they may touch dangerous voltage points or short-out parts that could result
in a fi re or electric shock. Never spill liquid of any kind on the product.
19. Servicing — Do not attempt to service this product yourself as opening or removing
covers may expose you to dangerous voltage or other hazards. Refer all servicing to
qualifi ed service personnel.
20. Damage Requiring Service — Unplug this product from the wall outlet and refer servicing
to qualifi ed service personnel under the following conditions:
a. When the power-supply cord or plug is damaged.
b. If liquid has been spilled, or objects have fallen into the product.
c. If the product has been exposed to rain or water.
d. If the product 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 qualifi ed technician to restore the product to its normal
operation.
e. If the product has been dropped or damaged in any way.
f. When the product exhibits a distinct change in performance — this indicates a need
for service.
21. Replacement Parts — When replacement parts are required, be sure the service
technician has used replacement parts specifi ed by the manufacturer or have the same
characteristics as the original part. Unauthorized substitutions may result in fi re, electric
shock, or other hazards.
22. 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.
23. Wall or Ceiling Mounting — The product should be mounted to a wall or ceiling only as
recommended by the manufacturer.
24. Heat — The product should be situated away from heat sources such as radiators, heat
registers, stoves, or other products (including amplifi ers) that produce heat.