C420 - Audio Amplifier NAD - Free user manual and instructions

USER MANUAL C420 NAD

IMPORTANT SAFETY INSTRUCTIONS

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.

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.

POWER LINES SERVICE ENTRANCE CONDUCTORS SERVICE ENTRANCE EQUIPMENT GROUND CLAMPS GROUND WIRE a, b BONDING JUMPER d GROUND CLAMP STAND-OFF INSULATORS b MAST ANTENNA LEAD-IN WIRE ANTENNA DISCHARGE UNIT c TO EXTERNAL ANTENNA TERMINALS OF PRODUCT GROUND WIRE a, b GROUND CLAMPS OPTIONAL ANTENNA GROUNDING ELECTRODE. DRIVEN 8 FEET (2.44M) INTO THE EARTH IF REQUIRED BY LOCAL CODES. SEE NEC SECTION 810.21(f).

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.

Warning symbols including lightning bolt, exclamation mark, and person climbing a ladder with a tool

FM ANTENNA GND AM OUTPUT L R NAD LINK IN OUT +12V TRIGGER OUT 1 2 3 4 5 6 © HAC 2020 C240

FRONT PANEL CONTROLS

NAD RDS Stereo Tuner C 420 BLEND MEMORY FM MUTE AM / FM DISPLAY PRESET / TUNE 1 3 4 5 6 7 8 9 10 R-D-S PRESET/TUNE © NAD 2020/C420

FIGURE 1.
European and Australian models

ANTENNA FM 75 Ω GND AM

FIGURE 2.

CLOSED OPEN

U.S.A. And Canadian models

ANTENNA FM 75 Ω GND AM

NAD C420 Stereo AM/FM Tuner

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.

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.

10. PRESET/TUNE ◀ AND ▶

The function of these buttons depends on the tuning mode selected with the Preset/Tune button (No. 8). The Preset button toggles between the two operation modes:

a) Preset mode (indicated in the display area): Press the ◀ (down) button to scroll to a lower number Preset; press the ▶ (up) button to scroll to a higher Preset number. This is a “wrap-around” function, so that going from the highest number Preset, the tuner will go to the lowest Preset number or vice-versa when tuning either up or down.
b) Tune mode: Press the ◀ (down) or ▶ (up) button for more than 1 second to engage automatic tuning respectively up or down the frequency band. The tuner will search automatically for the first reasonably strong radio station, where it will stop. Press the Down/Up button again for 1 second to start searching again.

By briefly tapping the ◀ (down) or ▶ (up) buttons you can engage manual tuning respectively up or down the frequency band for precise tuning to a specific frequency. With each successive tap of the keys, the tuner will take 0.1 MHz steps (120V version) or 0.05 MHz steps (230V version) on FM so you can accurately tune into the desired frequency. For AM the tuning steps are set at 10 kHz (120V version) or 9 kHz (230V version).

This tuning mode can also be useful when trying to receive a radio station, which is too weak for the auto search mode. When tuned accurately to a station, “TUNED” will light up in the display. The muting circuit, however may suppress very weak radio station signals. If such a very 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/MONO button (No. 5) will allow the station to be heard and will cancel most or all of this background noise.

NOTES: Automatic tuning is available on both FM and AM.

Some NAD system remote controls, compatible with the NAD C420, have Preset Up and Down functions. Even if the C420 is in Tune Mode, these remote control's Preset Up and Down buttons will only change presets. The Preset/Tune ◀ and ▶ buttons are also used in conjunction with the Memory (No. 4) and Display (No. 7) buttons to add and memorise user defined names to Presets. Refer to the separate chapter “Storing, recalling and naming Presets” for more information.

STORING, RECALLING AND LABELLING PRESETS

Up to 30 presets in total can be stored in the C420's memory bank; these can be any mix of either AM or FM stations. When scrolling through the presets, empty preset places will be skipped; it is thus possible to go from preset No. 4 to No. 7 without having seen No. 5 and 6. With the presets you can also store whether you want Blend (No. 3) and FM Mute/Mode (No. 5) to be activated as well every time you recall the preset.

TO STORE A PRESET

• Tune to the radio station you wish to enter into a Preset (refer to this chapter's section 10). If the station is transmitting RDS information, the RDS indicator will light up and station initials or name will be shown in the Display Panel. If a non-RDS station is found, then just the frequency will be shown.
• Select Blend (No. 3) or FM Mute/Mode (No. 5) if desired.
• To store that station as a Preset, press Memory (No. 4). The Preset number and the red “MEMORY” indicator are flashing in the Display Panel. The lowest available empty preset number will be shown. If no other buttons are pressed within 12 seconds, the tuner will revert to its previous state.
• Press Memory again to store the preset. If you wish to assign a different preset number, press either the Preset/Tune ▶ or ◀ button to select the desired preset number. You can overwrite an existing preset. If the preset number already has been assigned, “MEMORY” will stop blinking, but the preset will continue to blink. When you have selected the desired preset number, press Memory again to store the station.

NOTES: You can enter a new station into an unused Preset or over-write an existing programmed Memory Preset. By doing this you will replace all the data previously held on that Preset number.

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. The Memory Presets have a memory back-up, so they will remain stored for several weeks even if the Tuner is switched off or unplugged from the mains supply.

RECALLING A PRESET

• To select a Preset station, check if Preset mode is engaged (the display indicates “PRESET”). If not, press the Preset/Tune Mode button (No. 8); “PRESET” will now light up in the display.
• Press either the Tune/Preset ▶ or ◀ buttons (No. 10) until the right Preset is found and shown in the Display Panel.

Any unused Presets will be skipped; this avoids having to scroll through empty presets.

DELETING A STORED PRESET

You can empty a Preset by deleting the stored information:

• Select the Preset to be emptied.
• Press and hold the Memory button (No. 4) and Display button (No.7) for two seconds. The preset number and the text "DELETE" will flash in the display.
• Press only the display button again (within default time of 5 seconds) to confirm you want to delete this preset. The text “DELETED” and “—” as the Preset number appear in the display for a couple of seconds.

LABELLING A PRESET

When a station is transmitting RDS information, your NAD C420 will automatically show the station initials when its Preset is used. Although the Tuner automatically shows the frequency of any other AM or non-RDS Preset station, it also allows you to type in the station name to make it easier to identify which station is stored in the Memory Preset. To enter a name:

1) Select the Preset you want to attach a name to.
2) Press and hold the Display button (No. 7) for two seconds. The first space in the Station Data area of the Display Panel will flash.
3) Press either the Tune/Preset ▶ or ◀ (No. 10) button to scroll and select the first character (see Character list below for reference).
4) Press Display to move one place to the right to enter the next desired character.
5) Use the Tune/Preset buttons again to select the next character in the name and press Memory to store it.
6) Repeat steps 3 to 5 until name is complete or all eight places have been filled (up to 8 characters).
7) Press Memory once to finish the labelling procedure. Press Memory again to store the completed name.

There are 37 characters available including a blank space.

	A	B	C	D	E	F	G	H	I
SPACE	A	B	C	D	E	F	G	H	I
	K	L	M	N	O	P	Q	R	S
J	K	L	M	N	O	P	Q	R	S
	U	V	W	X	Y	Z	O	I	Z
T	U	V	W	X	Y	Z	O	I	Z
3	4	5	6	7	8	9
3	4	5	6	7	8	9

NOTE: This function is only available for non-RDS stations. RDS stations will always display their transmitted name and cannot be over-written.

TROUBLESHOOTING
Problem	Cause	Solution
NO SOUND	Power AC lead unplugged or power not switched onSignal leads incorrectly connectedStation not selected or weak signal with FM Mute onInternal fuse blown	Check AC leadCheck connections to amplifierRe-tune or switch off FM MuteConsult dealer
NO SOUND IN ONE CHANNEL	Signal leads to amplifier disconnected or damaged	Check leads and connections
NOISE, HISS	Weak signal	Check station tuning. Adjust or replace antenna.
DISTORTION	Multi-path signals or interference from another station	Check station tuning. Adjust or replace antenna
WHISTLES OR BUZZES ON FM & AM	Interference from other electrical sources - computers, games consoles	Check station tuning. Switch off or move the source of the electrical noise
WHISTLES OR BUZZES ON AM	Interference from fluorescent lighting or electrical motors	Check station tuning. Adjust or replace AM antenna
NO RDS INFORMATION	Station signal too weakStation not transmitting RDS data	Check station tuningAdjust or replace antennaNo remedy

SETUP FOR CUSTOM AND MULTI-ZONE INSTALLATIONS

REMOTE CONTROL CODES

The NAD C420 has a remote control command receiver built in so it will respond to NAD remote control commands, such as from most NAD system remote controls (RC450, RC451, S70; not supplied with C420). This will allow access to basic functions such as preset up/down, On/Stand-by.

Particularly with Custom Install in mind, the NAD C420 will respond to other commands not usually found on NAD remote control handsets. The table below indicates all commands the C420 recognises.

The NAD C420 uses the NEC format for IR transmission; customer code is 877C, the corresponding hex codes are next to the IR command:

Footnote	Function	Hex Code
1	Preset ▶	D2
	Preset ◀	D1
2	Search ▶	87
	Search ◀	86
3	Tune ▶	D4
	Tune ◀	D3
4	Preset 1	8A
	Preset 2	8E
	Preset 3	92
	Preset 4	94
	Preset 5	8B
	Preset 6	8F
	Preset 7	93
	Preset 8	97
	Preset 9	98
	Preset 0	C7
5	Enter	C5
6	Power/standby toggle	80
7	Power On	25
8	Stand-by	C8

1) Preset ◀ and ▶ scroll trough presets, with wrap-around.
2) Search ◀ and ▶ will engage auto-searching, with wrap-around
3) Tune ◀ and ▶ will engage tuning. if command received for more than 1 second, auto-search is engaged; wrap around
4) Preset 1-9, 0: Allows direct entry of preset number. First send desired number code, send Enter code to confirm. If preset is empty, tuner will default to current status.
5) Enter: To confirm and engage preset number. Program small macro with preset 1-9,0 and enter to gain direct preset access.
6) Power/Stand-by toggle: Switches tuner from On to Stand-by and vice-versa. This code is also used on other remote controlled products.
7) Power On: To avoid sync problems with other NAD products also using the Power/Stand-by toggle, the C420 responds to separate On code in addition; if already switched on, it will remain on.
8) Stand-by: For same reason as above. If already in Stand-by mode, it will remain so.

12V TRIGGER INPUT

NAD components equipped with 12V output triggers are fully compatible with the C420's 12V input trigger.

Plug type: 3.5mm mono mini-jack

Operating range: 6 to 15 V DC

Current drawn: <10mA

Centre pin = +

Shaft = -

NAD reserves the right to change specifications without notice.

Tuner Stereo AM/FM NAD C420

NOTES CONCERNANT L'INSTALLATION

	A	B	C	D	E	F	G	H	I
SPACE	A	B	C	D	E	F	G	H	I
	K	L	M	N	O	P	Q	R	S
J	K	L	M	N	O	P	Q	R	S
	U	V	W	X	Y	Z	U	I	Z
T	U	V	W	X	Y	Z	U	I	Z
3	4	5	6	7	8	9
3	4	5	6	7	8	9

	A	B	C	D	E	F	G	H	I
SPACE	A	B	C	D	E	F	G	H	I
J	K	L	M	N	O	P	Q	R	S
T	U	V	W	X	Y	Z	O	I	Z
T	U	V	W	X	Y	Z	O	I	Z
3	4	5	6	7	8	9
3	4	5	6	7	8	9

	A	B	C	D	E	F	G	H	I
SPACE	A	B	C	D	E	F	G	H	I
	K	L	M	N	O	P	Q	R	S
J	K	L	M	N	O	P	Q	R	S
	U	V	W	X	Y	Z	O	I	Z
T	U	V	W	X	Y	Z	O	I	Z
3	4	5	6	7	8	9
3	4	5	6	7	8	9

4. "NAD LINK IN/OUT"

1. "POWER ON/OFF" (ACCESO/SPENTO)

	A	B	C	D	E	F	G	H	I
SPACE	A	B	C	D	E	F	G	H	I
	K	L	M	N	O	P	Q	R	S
J	K	L	M	N	O	P	Q	R	S
	U	V	W	X	Y	Z	O	I	Z
T	U	V	W	X	Y	Z	O	I	Z
3	4	5	6	7	8	9
3	4	5	6	7	8	9

NOTA:

	A	B	C	D	E	F	G	H	I
SPACE	A	B	C	D	E	F	G	H	I
	K	L	M	N	O	P	Q	R	S
J	K	L	M	N	O	P	Q	R	S
	U	V	W	X	Y	Z	O	I	Z
T	U	V	W	X	Y	Z	O	I	Z
3	4	5	6	7	8	9
3	4	5	6	7	8	9

	A	B	C	D	E	F	G	H	I
SPACE	A	B	C	D	E	F	G	H	I
	K	L	M	N	O	P	Q	R	S
J	K	L	M	N	O	P	Q	R	S
	U	V	W	X	Y	Z	U	I	Z
T	U	V	W	X	Y	Z	U	I	Z
3	4	5	6	7	8	9
3	4	5	6	7	8	9

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