NAD MONITOR Series User manual

SERVICE

—

MANUAL

~

MONITOR

SERIES

3400

INTEGRATED

AMPLIFIER

NAD

3400

SERVICE

MANUAL

CONTENTS

sO

ON

FP

WN

18.

23.

Safety

Notice

Rear/Front

View

Specifications

Remote

Control

Transmitter

Main

Amp,

Preamp

Alignment

Schematics,

Foil

Diagrams

Version

Voltage

A

120

Al

120

B

240

B1

240

C

220

C1

220

C/S

220

SERVICE

SAFETY

PRECAUTIONS

(UL)

Wiring

Diagram

Exploded

View

Exploded

View

Parts

List

Electrical

Parts

List

Country

USA

Canada

UK

Australia

Europe,

others

W.

Germany

Scandinavia

1.

Use

exact

replacement

parts

for

critical

locations,

marked

“A\”

on

parts

list.

2.

Return

lead

dress

to

original

position,

and

re-install

protective

covers.

3.

Before

returning

to

customer,

test

for

shock

hazard;

use

either

method

A

or

B:

A.

Leakage

test,

“cold”:

1.

Unplug

AC

cord,

turn

power

switch

ON.

2.

Connect

one

lead

of

High

Voltage

Insulation

Tester

to

both

prongs

of

AC

plug.

3.

Touch

other

lead

to

all

exposed

metal

parts.

4.

Impedance

measurement

must

be

0.3

-

5.0

Megohms.

B.

Leakage

test,

“live”:

1.

Plug

unit

directly

into

AC

outlet;

do

not

use

isolation

transformer.

2.

Connect

one

lead

of

Leakage

Current

Tester

to

earth

ground.

3.

Touch

other

lead

to

all

exposed

metal

parts.

4.

Leakage

measurement

must

be

less

than

0.5

milliamps.

ATTENTION:

REAR

PANEL

CONNECTIONS

—

1.

AC

LINE

CORD.

8.

CAPACITANCE

SELECTOR.

15.

INFRASONIC

FILTER.

SS

Goce

eo

2.

AC

OUTLETS.

9.

TUNER

INPUT.

16.

SOFT

CLIPPING.

Serer

sens

sien

our

3.

SPEAKERS

A.

10.

VIDEO

SOUND

INPUT.

17.

BRIDGING.

ores

4.

SPEAKERS

B.

11.

CD

INPUT.

18.

SPEAKER

IMPEDANCE.

5.

GROUND.

12.

TAPE

1

INPUT/OUTPUT.

6.

PHONO

INPUT.

13.

TAPE

2

INPUT/OUTPUT.

7.

MM/MC

SELECTOR.

14,

PREAMP

OUT,

MAIN

IN.

5

4

3

Ln!

senmaune

4

OMe

A

ORIOU

8

MPEDANCE

{—)

MONO

+

enum

core

A

ANoreT

@

“C(NORMAL)

80.

G8GH)

6

7

8 9

10

11

12

13

14

15

17

16

182

1

uninsulated

“dangerous

voltage”

within

the

product's

enclo-

maintenance

(servicing)

instructions

in

the

literature

sure;

that

may

be

of

sufficient

magnitude

to

constitute

a

accompanying

the

appliance.

The

lightning

flash

with

arrowhead,

within

an

equilateral

The

exclamation

point

within

an

equilateral

triangle

is

intended

(

triangle,

is

intended

to

alert

the

user

of

the

presence

of

to

alert

the

user

of

the

presence

of

important

operating

and

tisk

of

electric

shock

to

persons.

FRONT

PANEL

CONTROLS

1.

POWER.

8.

TREBLE.

15.

BALANCE.

2.

PHONES.

9.

TREBLE

RANGE.

16.

VOLUME.

3.

SPEAKERS

A/B.

10.

TAPE

COPY.

17.

STATUS

INDICATORS.

4.

BASS

EQ.

11.

TAPE

1,

TAPE

2.

5.

BASS

RANGE.

12.

INPUT

SELECTOR.

6.

BASS.

13.

MONO.

7.

TONE

CONTROL

BYPASS.

14.

LOW

LEVEL.

1

17

Monitor

Series

Stereo

Ampiitier

3400

POWER

ENVELOPE

2

3°44

~«

5 6

7

8

9

10

11

12 13

14

15 16

SPECIFICATIONS

Note:

Specifications

are

measured

in

accordance

with

EIA

Standard

RS-490

(IHF

A-202).

Measurements

re-

ferenced

to

80

are

taken

with

the

Speaker

Impedance

Selector

set

to

“80

(High).”

Measurements

for

4

and

2

ohms

are

taken

with

the

Impedance

Selector

at

“40

(Normal).”

POWER

AMPLIFIER

SECTION

STEREO

MODE

CONTINUOUS

AVERAGE

POWER

OUTPUT

INTO

8

OHMS

(Min.

RMS

power

per

channel,

20Hz-20kHz,

both

channels

driven,

with

no

more

than

the

rated

distortion)

Rated

Distortion

(THD,

20Hz-20kHz)

Clipping

power

(maximum

continuous

power

per

channel)

IHF

Dynamic

Headroom

at

8

ohms

IHF

Dynamic

Power

(maximum

short-term

power

per

channel)

Slew

Factor

Siew

Rate

Damping

Factor

(ref.

8

ohms,

50

Hz)

THD

(Total

Harmonic

Distortion,

20Hz-20kHz,

from

250mW

to

rated

output)

SMPTE

I.M.

(Intermodulation

Distortion,

60Hz

&

7kHz,

4:1,

from

250mW

to

rated

output)

IHF

I.M.

(CCIF

IM

Distortion,

19

&

20kHz

at

rated

output)

Input

Impedance

Input

Sensitivity

for

1W

out/for

rated

power

Voltage

Gain

Frequency

Response

Lab

Input

Signal/Noise

Ratio,

A-weighted

BRIDGED

(MONOPHONIC)

MODE

CONTINUOUS

AVERAGE

POWER

OUTPUT

INTO

8

OHMS

(Min.

RMS

power

,

20Hz-20kHz,

with

no

more

than

the

rated

distortion)

IHF

Dynamic

Headroom

at

8

ohms

8

ohms

8

ohms

4

ohms

2

ohms

100

W

(20

dBW)

0.03%

130

W

+5.7

dB

370

W

400

W

440

W

>50

>30

V/usec

>100

<0.03%

R

=

20k.

C

=

600

pF

100mV/1.0V

X28

(29

dB)

3

Hz

to

100

kHz

+0,

-3dB

98

dB

ref.

1W

118

dB

ref.

100W

300

W

(24.7

dBW)*

+4.3dB

IHF

Dynamic

Power

(maximum

short-term

8

ohms

power

)

4

ohms

PREAMPLIFIER

SECTION

PHONO

INPUT

Input

Impedance

MM:

MC:

Input

Sensitivity

(1

kHz)

MM:

Mc:

Input

Overload

at

20

Hz/1kHz/20kHZ

MM:

MC:

Signal/Noise

Ratio,

IHF

A-weighted,

MM:

with

cartridge

connected

MC:

THD

(20Hz-20kHz)

and

IM

distortion

at

+30dB

level

RIAA

Response

Accuracy

LINE

LEVEL

INPUTS

(Tuner,

CD,

Video,

Tape)

Input

Impedance

Input

Sensitivity

ref.

1W/rated

output

Maximum

Input

Signal

Signal/Noise

Ratio,

A-weighted

Frequency

Response,

20Hz-20kHz

OUTPUTS

Preamp

Output

Impedance

Tape

Output

Impedance

Maximum

Output

Level

Tape

Output

Infrasonic

Filter

800

W

(29

dBW)

880

W

(29.4

dBW)

R

=

47

kQ,

C

=

100/200/300

pF

R

=

100.9,

C

=

1000

pF

0.22

mV

0.011

mV

20

mV/180

mV/1.6

mV

0.8

mV/8

mV/80

mV

80

dB

ref.

5

mV

78

dB

ref.

0.5

mV

<0.04%

+0.5

dB

R

=

50k0

C

=

250

pF

15

mV/150

mV

10V

96

GB

ref.

1W

116

dB

ref.

1OOW

+0.3

dB

60020

10002

(buffered)

10V

~—3

dB

at

14

Hz

12

dB/octave

CONTROLS

Treble

Bass

Equalization

Infrasonic

Filter

(switchable)

Audio

Muting

(low

level)

PHYSICAL

SPECIFICATIONS

Width

x

Height

x

Depth

Net

Weight

Shipping

Weight

Power

Consumption

+12

dB

at

3,6

or

12

kHz

+12

dB

at

50,

100

or

250

Hz

+3

dB

at

60

Hz

+6

dB

at

36 Hz

—3

dB

at

12

Hz

12

dB/octave

—20

dB

43.5

x

12

x

38.5cm

(17.1

X

4.75

X

15.2

in.)

11

kg

(24.25

Ib)

12.6

kg.

(27.75

Ib)

50/60

Hz

at

110,

220,

or

240

V.

390

VA

Specifications

are

those

in

effect

at

the

time

of

printing.

NAD

reserves

the

right

to

change

specifications

or

de-

sign

at

any

time

without

notice.

*In

some

countries

local

regulations

require

that

bridged

8

ohm

power

be

measured

with

the

speaker

impedance

switch

in

the

4

ohm

position

resulting

in

a

bridged

RMS

output

of

200W(23dBW).

REMOTE

CONTROL

TRANSMITTER

STATION

SELECTION

CD

TRACKS

TAPE

LOCATIONS

MODE

SIGNAL

SOURCE

SELECTION

VOLUME

PLAYBACK

CONTROLS

SCHEMATIC

FOR

REFERENCE

ONLY,

TRANSMITTER

NON-REPAIRABLE.

MAIN

AMPLIFIER

ALIGNMENT

IMPORTANT

NOTES

1.

Before

adjusting,

remove

input

signal

and

load,

and

set

speaker

impedance

switch

to

8

(HIGH);

reset

to

40

(NORMAL)

when

finished.

:

2.

These

adjustments

are

always

necessary

after

repair

to

main

amplifier.

;

3.

After

repair,

it

is

recommended

to

use

current

limiter

(200-250W

lightbulb)

in

mains

line,

for

initial

turn-on.

A.

CENTER

VOLTAGE

CHECK

1.

Connect

DVM

from

Ground

to

R836,

L

chan

(R886,

R

chan).

2.

Turn

power

on,

and

check

for

reading

of

OV

+100mVDC.

B.

IDLE

CURRENT

ADJUSTMENT

1.

Connect

DVM

from

TP801

to

TP802,

L

chan

(TP851,

TP852

R

chan).

2.

Adjust

R818,

L

chan

(R868,

R

chan)

for

reading

of

14mV

+1mVDC.

Cc.

FINAL

ADJUSTMENT

1.

Leave

power

on

minimum

5

minutes.

2.

Repeat

center

voltage

check

and

idle

current

adjustment.

PREAMPLIFIER

ALIGNMENT

CHANNEL

BALANCE

1.

Feed

1kHz,

100mV

to

CD

input;

connect

AC

VTVM's

to

Pre

Out.

2.

Set

volume

to

maximum,

balance

to

center,

low

level

off.

3.

Adjust

R758

so

that

both

channels

have

same

output

level

+0.25cB.

TP802

TP801

TP852

TP851

|

2)

b

Coo

<

R836

ol

i

on

R886

a

|

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R818

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R868

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AMPLIFIER

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SER.

No.430001~

451000

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:

15K

2)SER.NO.

630001

~

431000

DG37~

040

:

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Net

used

€039,04

3,047,051

:

120P

XMARK

R060

068

076

O86

21K

C054,056,058,068:150P

Not

used.

coco,

0021

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:

GZA5.1Z

044,040,052

:

470°

SER.

NO.

430001

~

431000

CAPACITANCE

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csse 2zop $502

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15-168

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26v.

R7I3

3.3K

$004

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16V-

334,

DOTA

(4407)

R712 100K

ROS3

470

C551

R854

R587

0553

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C552

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P.C.B.

ASS’Y

(J030A)

MAINS

INPUT

P.C.B.

ASS’Y

(P034C)

HEADPHONE

CONNECTOR

POWER

SWITCH

ASS’Y

ASS'Y

MAIN/CONTROL/SUPPLY

P.C.B.

ASS'Y

(029A)

paris

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$301~S308

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23

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UL

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1

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3400-2

COM

P.C.B.

ASS’Y

TACTILE

SWITCH

ASS’Y

(D017A)

(S016A)

NAD MONITOR Series User manual

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