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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
A.
Unplug this product from the wall outlet and refer service to
qualified service personnel under the following conditions.
B.
When the power- supply cord or plug is damaged.
C.
If liquid has been spilled or objects have fallen into the product.
D.
If the product has been exposed to rain or water.
E.
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.
F.
If the product has been dropped or the cabinet has been
damaged.
G.
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
to the point of cable entry as 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.
