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R-SE7/DP-SE7/X-SE7 (En)
5
Preparation section Basic section Application section Knowledge sections
Before applying power
18.Power lines – An outside antenna system should not
be located in the vicinity of overhead power lines or
other electric light or power circuits, or where it can fall
into such power lines or circuits. When installing an
outside antenna system, extreme care should be taken
to keep from touching such power lines or circuits as
contact with them might be fatal.
19.AC outlets – Do not connect other audio
equipment with a power consumption larger than
that specified to the AC outlet on the rear panel.
Never connect other electrical appliances, such
as an iron or toaster, to it to prevent fire or electric
shock.
20. Overloading – Do not overload wall outlets, extension
cords, or integral convenience receptacles as this can
result in a risk of fire or electric shock.
21. Attachment – Do not use attachments not
recommended by the appliance manufacturer as they
may cause hazards.
22. 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 parts.
Unauthorized substitutions may result in fire, electric
shock, or other hazards.
23. Safety check – Upon completion of any service or
repairs to this appliance, ask the service technician to
perform safety checks to determine that the appliance
is in proper operating condition.
15. Damage requiring service – The appliance should
be serviced by qualified service personnel when:
A. The power-supply cord or the plug has been
damaged.
B. Objects have fallen, or liquid has been spilled into
the appliance.
C. The appliance has been exposed to rain or water.
D. The appliance does not appear to operate normally
by following the instruction manual. Adjust only those
controls that are covered by the instruction manual as
an improper adjustment of other controls may result in
damage and will often require extensive work by a
qualified technician to restore the appliance to its normal
operation.
E. The appliance has been dropped, or the enclosure
damaged.
F. The appliance exhibits a marked change in performance.
16.Servicing – The user should not attempt to
service the appliance beyond that described in the
instruction manual. All other servicing should be
referred to qualified service personnel.
17.Outdoor antenna grounding – If an outside
antenna is connected to the appliance, be sure the
antenna system is grounded so as to provide
some protection against voltage surges and built
up static charges. Article 810 of the National
Electrical Code ANSI/NFPA 70, provides
information with respect to proper grounding of
the mast and supporting structure, grounding of
the lead-in wire to an antenna discharge unit, size
of grounding conductors, location of antenna
discharge unit, connection to grounding
electrodes, and requirements for the grounding
electrode. See Figure.
Caution : Read this page carefully to ensure safe
operation.
Notes:
1. Item 3 is not required except for grounded or polarized
equipment.
2. Item 17 and 18 are not required except for units provided with
antenna terminals.
3. Item 17 complies with UL in the U.S.A.
EXAMPLE OF ANTENNA GROUNDING AS PER
NATIONAL ELECTRICAL CODE
ANTENNA
DISCHARGE UNIT
(NEC SECTION 810-20)
POWER SERVICE GROUNDING
ELECTRODE SYSTEM
(NEC ART 250, PART H)
GROUND CLAMP
ANTENNA
LEAD IN WIRE
GROUND
CLAMPS
ELECTRIC
SERVICE
EQUIPMENT
NEC – NATIONAL ELECTRICAL CODE
GROUNDING CONDUCTORS
(NEC SECTION 810-21)