Marantz SR4021 Grounding or Polarization This product, Power-Cord Protection Power-supply cords

12.Grounding or Polarization – This product

m a y b e e q u i p p e d w i t h a p o l a r i z e d alternatingcurrent 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 fi t, 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

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 fi re

or electric shock.

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, and

f.When the product exhibits a distinct change in performance this indicates a need for service.

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 fi re, 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 amplifi ers) that produce heat.

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

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 fi re or
	electric shock. Never spill liquid of any kind
	on the product.
20.	Servicing – Do not attempt to service this

FIGURE 1

EXAMPLE OF ANTENNA GROUNDING AS PER NATIONAL ELECTRICAL CODE, ANSI/NFPA 70

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 antennadischarge unit, connection to

product yourself as opening or removing

covers may expose you to dangerous voltage

or other hazards. Refer all servicing to

qualifi ed service personnel.

21. 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.

GROUND

CLAMP

ELECTRIC

SERVICE

EQUIPMENT

GROUND CLAMPS

ANTENNA

LEAD IN WIRE

ANTENNA DISCHARGE UNIT (NEC SECTION 810-20)

GROUNDING CONDUCTORS (NEC SECTION 810-21)

POWER SERVICE GROUNDING ELECTRODE SYSTEM

(NEC ART 250, PART H)

grounding electrodes, and requirements for

the grounding electrode. See Figure 1.

NEC - NATIONAL ELECTRICAL CODE

This Class B digital apparatus complies with Canadian	Cet appareil numérique de la Classe B est conforme
ICES-003.	à la norme NMB-003 du Canada.