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Marantz SR7400 Manual

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12. Grounding or Polarization – This product may
be equipped with a polarized alternating-
current line plug (a plug having one blade
wider than the other). This plug will fit into the
power outlet only one way. This is a safety
feature. If you are unable to insert the plug
fully into the outlet, try reversing the plug. If the
plug should still fail to fit, contact your
electrician to replace your obsolete outlet. Do
not defeat the safety purpose of the polarized
plug.
AC POLARIZED PLUG
13. Power-Cord Protection – Power-supply cords
should be routed so that they are not likely to
be walked on or pinched by items placed upon
or against them, paying particular attention to
cords at plugs, convenience receptacles, and
the point where they exit from the product.
14. Protective Attachment Plug – The product is
equipped with an attachment plug having
overload protection. This is a safety feature.
See Instruction Manual for replacement or
resetting of protective device. If replacement
of the plug is required, be sure the service
technician has used a replacement plug
specified by the manufacturer that has the
same overload protection as the original plug.
15. Outdoor Antenna Grounding – If an outside
antenna or cable system is connected to the
product, be sure the antenna or cable 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 regard 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 1.
16. Lightning – For added protection for this
product during a lightning storm, or when it is
left unattended and unused for long periods of
time, unplug it from the wall outlet and
disconnect the antenna or cable system. This
will prevent damage to the product due to
lightning and power-line surges.
17. 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.
18. Overloading – Do not overload wall outlets,
extension cords, or integral convenience
receptacles as this can result in a risk of fire or
electric shock.
19. 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 fire or
electric shock. Never spill liquid of any kind on
the product.
20. 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
qualified service personnel.
21. Damage Requiring Service – Unplug this
product from the wall outlet and refer servicing
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 improper
adjustment of other controls may result in
damage and will often require extensive work
by a qualified technician to restore the product
to its normal operation.
e. If the product has been dropped or damaged
in any way, and
f. When the product exhibits a distinct change in
performance – this indicates a need for
service.
FIGURE 1
EXAMPLE OF ANTENNA GROUNDING AS PER
NATIONAL ELECTRICAL CODE, ANSI/NFPA 70
This Class B digital apparatus complies with
Canadian ICES-003.
Cet appareil numérique de la Classe B est conforme
à la norme NMB-003 du Canada.
NEC - NATIONAL ELECTRICAL CODE
ANTENNA
LEAD IN WIRE
GROUND
CLAMP
ANTENNA
DISCHARGE UNIT
(NEC SECTION 810-20)
GROUNDING CONDUCTORS
(NEC SECTION 810-21)
ELECTRIC
SERVICE
EQUIPMENT
GROUND CLAMPS
POWER SERVICE GROUNDING
ELECTRODE SYSTEM
(NEC ART 250, PART H)
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 part.
Unauthorized substitutions may result in fire,
electric shock, or other hazards.
23. 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.
24. Wall or Ceiling Mounting – The product should
be mounted to a wall or ceiling only as
recommended by the manufacturer.
25. Heat – The product should be situated away
from heat sources such as radiators, heat
registers, stoves, or other products (including
amplifiers) that produce heat.
SR7400U DFU_00_cover 03.10.13, 9:23 AMPage 9 Adobe PageMaker 6.5J/PPC
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