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C420
Stereo AM/FM Tuner
Owner's Manual
GB
Manuel d'Installation
F
Bedienungsanleitung
D
Manual del Usuario
E
Manuale delle Istruzioni
I
Manual do Proprietário
P
Bruksanvisning
S


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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 product's 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 manufacturer's 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 owner's
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
shop's 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 JUSQU'AU
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 installer's 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
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3
REAR PANEL CONNECTIONS
FRONT PANEL CONTROLS


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NOTES ON INSTALLATION
Your NAD C420 should be placed on a firm, level surface. Avoid
placing the unit in direct sunlight, near sources of heat and damp
or in poorly ventilated positions. It comes with RCA leads for
connection to your amplifier. Ensure that leads and connectors are
not damaged in any way and all connectors are firmly pushed home.
If the unit is not going to be used for some time, disconnect the
plug from the AC socket. Should water get into your NAD C420,
shut off the power to the unit and remove the plug from the AC
socket. Have the unit inspected by a qualified service technician
before attempting to use it again. Do not remove the cover,
there are no user-serviceable parts inside.
Use a dry soft cloth to clean the unit. If necessary, lightly dampen
the cloth with soapy water. Do not use solutions containing benzol
or other volatile agents.
QUICK START
Use the RCA-to-RCA lead to connect the NAD C420 left & right
outputs to the Tuner Input of your amplifier.
1. Plug in the AC power cord.
2. Connect C420's output to amplifier.
3. Connect AM and FM antenna.
4. Press the POWER button (No. 1) to turn on the NAD C420.
5. Press the AM/FM button (No. 6) to select AM or FM reception.
6. Press Preset/Tune button so that "PRESET" isn't lit in display;
the tuner is now in Tune mode.
7. Use TUNE/PRESET
or
to select a station.
REAR PANEL CONNECTIONS
1. FM ANTENNA
A ribbon wire FM antenna is included and should be connected to
the FM connector at the rear of the unit using the supplied
"balun" adapter (see fig 1). The ribbon aerial should be mounted
on a vertical surface and placed so that it forms a "T".
Experiment with placement of the antenna to find the position that
gives the best signal strength and lowest background noise. An
inadequate FM signal normally results in high levels of hiss,
especially in stereo, and interference from external electrical
sources. In areas of poor FM reception, the tuner section's
performance can be improved by using an externally mounted FM
antenna. A qualified aerial installer will be able to advise and fit a
recommended aerial for your reception conditions.
2. AM ANTENNA
An AM loop antenna is supplied with the NAD C420 and is required
for AM reception. To connect the AM antenna, first press the keys
on the Antenna terminals downwards. Insert the bare antenna wires
into the two terminal holes and push the connector keys upwards
again to secure the connection (see fig 2). Test various positions for
the antenna but always ensure the loop is placed vertically for best
reception. Placing the antenna close to large metal items such as
metal shelves or radiators may interfere with reception.
3. OUTPUT
Using twin RCA-to-RCA leads, connect to the left (white) and right
(red) audio outputs to the "Tuner" input or other line-level input
such as "Aux" input of your amplifier. Do not connect this cable
to the amplifier's "Phono" input.
4. NAD-LINK IN OUT
The NAD-Link connector is used to pass commands from other
units fitted with NAD-Link connectors. This allows centralised
control of a complete system, and also allows some of the basic
functions of other NAD components (such as a CD player or
cassette-deck) also equipped with NAD-Link to be controlled with
an NAD system remote control. To function with such other units,
connect the C420's NAD-Link Out to the NAD-Link In on the other
unit. NAD-Link connectors can be daisy-chained, IN to OUT, so
that a whole system can be controlled from the remote control
facilities of one unit.
NOTES:
The NAD C420 has a built-in receiver for commands
from a remote control and doesn't need to rely on NAD Link to be
remotely operated. It is advisable not to connect NAD-Link if the
other units that have their own built-in remote control command
receiver and are positioned together, in direct view from the
remote control handset. If you are unsure, try operating the
products without NAD-Link first; If the unit responds to the remote
control command, it will not be necessary to connect NAD-Link.
Never loop the last unit back to the first NAD unit in the NAD-Link
chain. Unplug all units from the mains before connecting or
disconnecting NAD-Link.
5. 12V TRIGGER IN
This input allows the C420 to be switched remotely to Stand-by
and On by ancillary equipment such as an amplifier or preamp, AV
processor, etc. which are also equipped with a 12V trigger output.
For switching Stand-by/Power On of the C420 by an external
component, connect the12V-trigger input of the C420 to the
remote component's DC output jack. The plug required is a
standard 3.5mm Mini-Jack plug ("mono"): The tip is the live or
+ connection, the shaft of the input jack is the 12V-trigger - or
ground connection.
NOTES:
The C420's 12V Trigger will work within a range of 6 to
15 V DC level and typically draws less than 10mA of current.
Check the specifications of the Trigger output terminal on the
remote component to ensure it is compatible with the C420's 12V-
trigger input. NAD components equipped with 12V output triggers
are fully compatible with the C420's 12V input trigger.
Before making any connections to any 12V trigger input or output,
make sure all components are disconnected from the AC mains.
Failure to observe the above may result in damage to the C420 or
any ancillary components attached to it. If in doubt over the
connections, installation and operation of the 12V trigger output
consult your NAD dealer.
6. AC LINE CORD
Plug the AC power cord into a live AC wall socket or to an AC
convenience outlet at the rear of your amplifier.
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NAD C420 Stereo AM/FM Tuner


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FRONT PANEL CONTROLS
1. POWER ON/OFF
POWER switches the tuner on or off. Pressing the Power switch
turns the Tuner on, the Display Panel and Power Status Indicator
(No. 2) will light up. Pressing the Power button again will switch
the unit off.
NOTES:
The C420 has a receiver for remote control commands
built-in. Most NAD system remote control handsets with an On/Off
toggle button or separate On and Off button will be able to switch
the tuner from On to Stand-by and vice-versa.
The C420 uses a memory back-up system to store Preset
information. This information is retained for several weeks, even
if the unit is switched off completely or unplugged. When
switching power On, the C420 will go back to the station last tuned
to before the unit was turned off. This will allow you to make timer
recordings using an external timer and recorder.
2. POWER STATUS INDICATOR
The Power Status Indicator will light up green when Power is on.
When the tuner is switched to Stand-by mode (through either a
remote control or the 12V trigger input) the indicator will light up
amber. When the unit is switched off completely, it is off.
3. BLEND
Weak or remote stereo radio stations are sometimes received with
noise and hiss as the antenna signal is too weak. By switching the
tuner to mono will reduce the amount of noise and hiss but at the
expense of any stereo information. The NAD Blend feature will
allow you to reduce the amount noise and hiss but still retain
some level of stereo separation, instead of mono. The Blend
button toggles between engaging or disengaging the Blend feature;
when engaged, "BLEND" lights up in the display.
NOTE:
The "Blend" status can be stored for individual presets.
Refer to the separate chapter "Storing, Recalling and Labelling
Presets" for more information.
4. MEMORY
The Memory is used to store stations into the Preset Memory bank
and to store user defined names for non-RDS Preset stations.
When Memory is pressed during normal operation, the Preset
number and the red "MEMORY" indicator will flash in the Display
Panel. If no other buttons are pressed within 12 seconds, the
tuner will revert to its previous state. Refer to the separate chapter
"Storing, Recalling and Labelling Presets" for more information.
5. FM MUTE/MODE
This button combines two functions; it switches the tuner from
Stereo to Mono and disengages the muting circuitry at the same
time. The muting circuit will mute the tuner in between radio
stations when searching or tuning. This way the tuning noise is
avoided. The muting circuit however may suppress very weak
radio station signals. If a weak station is in stereo it will have a
high level of background hiss. Switching to Mono Mode and
disengaging the muting circuit by depressing the FM MUTE/MODE
button will allow the station to be heard and will cancel most or
all of this background noise.
In normal operation the mute circuit is engaged, the display
indicates "FM MUTE". Press the FM Mute/Mode button to
disengage the muting circuit and switch from stereo to mono
reception. "FM MUTE" in the display will extinguish. Press the FM
Mute/Mode switch again to return to Auto Stereo FM operation.
NOTE:
The "FM Mute/Mode" status can be stored for individual
presets. Refer to the separate chapter "Storing, Recalling and
Labelling Presets" for more information.
6. AM/FM
The AM/FM button switches the tuner from the AM band to the FM
band and vice-versa. The Display Panel shows the frequency of the
tuned station and which band is selected. The FM tuning is in 0.05
MHz increments, AM tuning is in 9 kHz or 10 kHz increments,
depending on the version.
7. DISPLAY
With stations carrying RDS information, The Display button scrolls
between three different display modes, each successive push of
the button engages the next one of the three modes:
a) In the default mode, the station's RDS name is displayed,
Program Service (PS; normally the station's calling letters, BBC
R3, for instance).
b) From the default mode, press the button once to view Radio
Text (RT). This can be additional information such as the
presenter's or program's name; what song is playing, etc. This
text scrolls continuously over the 8 alphanumeric display
segments.
c) Press the button from the display RT mode to display the station
frequency. Press again to return to the default mode (a).
When tuned to a non-RDS station
The Display button toggles the display to show either the station
frequency or user entered station name. If no user name was
entered the display will indicate "NO RDS". The Display button is
also used to label non-RDS stations with a name. Refer to the
separate chapter "Storing, Recalling and Labelling Presets" for
more information.
8. PRESET/TUNE
The Search/Preset button toggles between two different modes:
a) Preset mode: In this mode you can use the Tune/Preset button
(No. 10) to select a Preset. When Preset Mode is selected
"PRESET" will scroll once through the display and the PRESET
indicator lights up in the display.
b) Tune mode: By pressing the Tune/Preset button (10)
or
you can engage automatic or manual tuning respectively
down or up the frequency band. When Tune mode is selected,
"TUNE" will scroll through the display once.
9. DISPLAY AREA
The display area gives all vital information on the status of the
tuner. Displayed are:
· Band and frequency of current station, RDS PS (station name),
or RDS Radio Text. The latter two only if RDS is available; select
using the Display button (No. 7).
· If an FM Stereo broadcast is received.
· If the FM station also broadcasts RDS.
· If "Memory" has been engaged
· Preset number if the current station is stored in the tuner's
memory bank.
· If Blend and FM Mute/Mode are switched On.
· Radio Signal Strength. The bars just below "ANTENNA" indicate
the radio station's signal strength. The more bars are lit, the
stronger the station.
NOTE:
The infrared sensor, which receives commands from a
remote control (not supplied), is located on the left side of the
display window. There must be a clear line-of-sight path from the
remote control to this window; if that path is obstructed, the
remote control may not work.
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