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20. Service
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
qualified service personnel.
21. Replacement parts
When replacement parts are required, be sure the service technician uses
replacement parts specified by the manufacturer or those that have the same
characteristics as the original parts. Unauthorized substitutions may result in
fire or 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. Damage requiring service
Unplug this product from the wall outlet and refer service to qualified 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 adjustment of other controls may result in damage and will
require extensive work by a qualified technician to restore the product to its
normal operation.
e)If the product has been dropped or the cabinet has been damaged.
f)When the product exhibits a distinct change in performance- this indicates a
need for service.
25. Note to CATV system installer
This reminder is provided to call the CATV system installer' s attention to
Article 820- 40 of the NEC that provides guidelines for proper grounding and,
in particular, specifies that the cable ground shall be connected to the
grounding system of the building, as close
practical.
NOTE: Refer all servicing to qualified service personnel. Servicing is
required when the unit has been damaged in any way such as the
following: the power-supply cord or plug has been damaged, liquid has
been spilled into unit, the unit has been exposed to rain or moisture, the
unit has been dropped or the unit does not operate normally.
to the point of cable entry as
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