Page 1
Warning: To reduce the risk of fire or electric shock, do not
expose this unit to rain or moisture.
The lightning flash with an arrowhead symbol within an equilateral
triangle, is intended to alert the user to the presence of uninsulated
dangerous voltage within the products enclosure that may be of
sufficient magnitude to constitute a risk of electric shock to persons.
The exclamation point within an equilateral triangle is intended to
alert the user to the presence of important operating and
maintenance (servicing) instructions in the literature accompanying
the product.
Do not place this unit on an unstable cart, stand or tripod, bracket
or table. The unit may fall, causing serious injury to a child or adult
and serious damage to the unit. Use only with a cart, stand, tripod,
bracket or table recommended by the manufacturer or sold with
the unit. Any mounting of the device on a wall or ceiling should
follow the manufacturers instructions and should use a mounting
accessory recommended by the manufacturer.
An appliance and cart combination should be moved with care.
Quick stops, excessive force and uneven surfaces may cause the
appliance and cart combination to overturn.
Read and follow all the safety and operating instructions before
connecting or using this unit. Retain this notice and the owners
manual for future reference.
All warnings on the unit and in its operating instructions should be
adhered to.
Do not use this unit near water; for example, near a bath tub,
washbowl, kitchen sink, laundry tub, in a wet basement or near a
swimming pool.
The unit should be installed so that its location or position does not
interfere with its proper ventilation. For example, it should not be
situated on a bed, sofa, rug or similar surface that may block the
ventilation openings; or placed in a built-in installation, such as a
bookcase or cabinet, that may impede the flow of air through its
ventilation openings.
The unit should be situated from heat sources such as radiators,
heat registers, stoves or other devices (including amplifiers) that
produce heat.
The unit should be connected to a power supply outlet only of the
voltage and frequency marked on its rear panel.
The power supply cord should be routed so that it is not likely to be
walked on or pinched, especially near the plug, convenience
receptacles, or where the cord exits from the unit.
Unplug the unit from the wall outlet before cleaning. Never use
benzine, thinner or other solvents for cleaning. Use only a soft
damp cloth.
The power supply cord of the unit should be unplugged from the
wall outlet when it is to be unused for a long period of time.
Care should be taken so that objects do not fall, and liquids are not
spilled into the enclosure through any openings.
This unit should be serviced by qualified service personnel when:
A. The power cord or the plug has been damaged; or
B. Objects have fallen, or liquid has been spilled into the unit; or
C. The unit has been exposed to rain or liquids of any kind; or
D. The unit does not appear to operate normally or exhibits a
marked change in performance; or
E. The device has been dropped or the enclosure damaged.
DO NOT ATTEMPT SERVICING OF THIS UNIT
YOURSELF. REFER SERVICING TO QUALIFIED
SERVICE PERSONNEL
Upon completion of any servicing or repairs, request the service
shops assurance that only Factory Authorized Replacement Parts
with the same characteristics as the original parts have been used,
and that the routine safety checks have been performed to
guarantee that the equipment is in safe operating condition.
REPLACEMENT WITH UNAUTHORIZED PARTS MAY RESULT IN FIRE,
ELECTRIC SHOCK OR OTHER HAZARDS.
ATTENTION POUR ÉVITER LES CHOC ELECTRIQUES, INTRODUIRE LA
LAME LA PLUS LARGE DE LA FICHE DANS LA BORNE
CORRESPONDANTE DE LA PRISE ET POUSSER JUSQUAU
FOND.
CAUTION TO PREVENT ELECTRIC SHOCK, MATCH WIDE BLADE OF
PLUG TO WIDE SLOT FULLY INSERT.
If an indoor antenna is used (either built into the set or installed
separately), never allow any part of the antenna to touch the metal
parts of other electrical appliances such as a lamp, TV set etc.
CAUTION
POWER LINES
Any outdoor antenna must be located away from all power lines.
OUTDOOR ANTENNA GROUNDING If an outside antenna is connected to your tuner or tuner-
preamplifier, 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 No.
70-1984, 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.
a. Use No. 10 AWG (5.3mm2) copper, No. 8 AWG (8.4mm2)
aluminium, No. 17 AWG (1.0mm2) copper-clad steel or bronze
wire, or larger, as a ground wire.
b. Secure antenna lead-in and ground wires to house with stand-off
insulators spaced from 4-6 feet (1.22 - 1.83 m) apart.
c. Mount antenna discharge unit as close as possible to where lead-
in enters house.
d. Use jumper wire not smaller than No.6 AWG (13.3mm2) copper,
or the equivalent, when a separate antenna-grounding electrode
is used. see NEC Section 810-21 (j).
EXAMPLE OF ANTENNA GROUNDING AS PER NATIONAL ELECTRICAL
CODE INSTRUCTIONS CONTAINED IN ARTICLE 810 - RADIO AND
TELEVISION EQUIPMENT.
NOTE TO CATV SYSTEM INSTALLER:This reminder is
provided to call the CATV system installers attention to
Article 820-40 of the National Electrical Code that provides
guidelines for proper grounding and, in particular, specifies
that the ground cable ground shall be connected to the
grounding system of the building, as close to the point of
cable entry as practical.
CAUTION
RISK OF ELECTRIC
SHOCK DO NOT OPEN
ATTENTION:RISQUE DE CHOC ELECTRIQUE
NE PAS OUVRIR
CAUTION:TO REDUCE THE RISK OF ELECTRIC
SHOCK, DO NOT REMOVE COVER (OR BACK). NO
USER SERVICEABLE PARTS INSIDE. REFER SERVICING
TO QUALIFIED SERVICE PERSONNEL.
IMPORTANT SAFETY INSTRUCTIONS
2
Page 22
PRECAUCION: En modo de puenteo los hilos de altavoz han d e estar
flotando respecto a la tierra del circuito. NO conecte los hilos de
altavoz a ninguna cosa que participe de una tierra común entre los
canales estéreo (como un interruptor de altavoz o un amplificador
para auriculares electrostáticos), ni a ninguna cosa que participe de
una tierra común con las entradas de amplificador (como un
comparador de conmutación o un analizador de distorsión).
4. Satisfechas las condiciones precedentes, ponga el interruptor
BRIDGING (puenteo) en ON (MONO). Finalmente ponga Power en ON.
5. Para que el amplificador vuelva a funcionamiento estéreo normal
en fecha posterior, primero apague la alimentación eléctrica.
Vuelva a poner el interruptor BRIDGING en OFF (STEREO).
Restablezca las conexiones de entrada normales de izquierda y
derecha, y vuelva a conectar los hilos de altavoz a los terminales de
altavoz como se describe antes bajo el título SPEAKERS (altavoces).
CONTROLES DEL PANEL DELANTERO
1. POWER ON/OFF (ALIMENTACION
ELECTRICA CONECTADA/DESCONECTADA)
Pulse el pulsador Power para conectar el amplificador. Se ilumina el
diodo LED azul cuando la alimentación eléctrica está conectada y el
amplificador está preparado para uso. Pulse el pulsador Power otra
vez para desconectar el amplificador.
2. INDICADOR DE POWER (ESTADO)
Se enciende el diodo LED azul cuando el S200 está conectado, lo
que indica el estado de funcionamiento del amplificador como sigue.
OSCURO: Power off. El interruptor Power puede estar en off, el cable
de Red de CA puede estar desenchufado o no conectado a una toma
de pared con corriente, o el fusible térmico puede haberse fundido.
AZUL: Power on. El amplificador está preparado para uso.
3. INDICADOR DE PROTECCION
Se enciende el diodo LED azul cuando se activa el modo de Protection
(protección), lo que significa que los altavoces han sido desconectados
por un relé interno. Este modo se activa brevemente durante la
conexión y desconexión del equipo, para proteger los altavoces contra
impulsos súbitos de baja frecuencia. En otros momentos el modo
Protection se puede activar por un calentamiento excesivo severo,
cableado de altavoces cortocircuitado, o una avería interna.
Si el indicador de diodo LED azul está continuamente encendido,
ponga Power en Off. Cuando se enfríala etapa de salida, los relés
automáticamente vuelven a conectar los altavoces, y puede volverse
a funcionamiento normal. En la mayoría de los casos una reducción
de volumen muy pequeña impide más interrupciones.Si los relés de protección interrumpen la frecuencia de sonido, deben
considerarse varias causas posibles: Un torón suelto de hilo que
causa un cortocircuito parcial entre los terminales de altavoz, o
funcionamiento continuo de alta potencia en impedancia muy baja
en modo Bridged (puenteado) o cualquier obstrucción del paso libre
del aire que se necesita para ventilar el amplificador y disipar el calor.
Si el sistema de protección interrumpe el sonido aunque el
amplificador esté frío, devuelva el amplificador a su distribuidor NAD
para servicio. Los relés de protección pueden desactivar para proteger
sus altavoces contra un avería de circuito, como un voltaje CC
inapropiado en los terminales de altavoz.
4. INDICADOR DE SOFT CLIPPING
(RECORTE BLANDO)
Este diodo LED se enciende cuando el interruptor de Soft Clipping
(en el panel trasero) está en ON.
5. INDICADOR DE MODO BRIDGE (PUENTEO)
Este diodo LED se enciende cuando el interruptor de Bridging (en el
panel trasero) está puesto en ON (STEREO).
E
23
