NAD 705 Manual de usuario

NAD

r**tft

LLI

705

RECEIVER

CONTENTS

Page



Service

Instruction



Specifications

6-7



Rear/Front

Panel



Remote

ControlTransmitter



TunerAdjustment

Points



MainAdjustment

Points

11-12



Instrumentation

ConnectionDiagram

13-14



Adjustment

Procedure

15-16



Main

Schematic

Diagram

17-18



MainPCB Layout

19-20



TunerSchematic

Diagram

21-22



Tuner

Front

PCB

Layout

23-24



Front

Schematic

Diagram

25-26



Block

Diagram

27-28



Wiring

Diagram

(A)

29-30



Wiring

Diagram

(B)

31-32



ExplodedView

33-34



Exploded

ViewParts

List

35-47



Electrical

Parts

List



Troubleshooting

Guide



Packing

Diagram



PackingList



Notes

REMOVE

TOP

COVER

Service

Instructions

Remove

screws

(A)

from

the

left

and

right

sides

the

top

cover

(See

figure

:[)

Remove

screws

(B)

from

the

rear

panel

(See

figure

II)

Top

cover

can

now

removed

SPECIFICATIONS

NAD

705

STEREO

RECEIVER

Standard

Test

Conditions

Reference

Output

.OW

Into

ohmLoad

AM Antenna

Firsthand

Input

FM Antenna

ohm

Balanced

Standard

Signal

kHz,

kHz

Deviation

At 98

MHz

TUNER

SECTION

Tuning

Range

522

kHz-1611

kHz

(520

kHz-1610

kHz)

Intermediate

Frequency

Sensitivity

450

kHz

20dB

Quieting

Sensitivity

5uV

Rejection

35dB

S/N

Ratio

.OmV

Input

50dB

.H.D

.OmV

Input

.3Z

Stop

Sensitivity

(At

1000 kHz)

50dB

TUNER

SECTION

TuningRange

MHz-108MHz

Intermediate

Frequency

MHz

50dB

Quieting

Sensitivity

.4mV

Rejection 90dB

S/N

Ratio

1mV

Input

kHz

DEV

80dB

MPX Separation

(At

kHz)

50dB

MPX

S/N

Ratio

1mV

77dB

Stop

Sensitivity

(At

MHz)

30dB

PRE-AMPLIFIER

SECTION

Sensitivity

kHz

Output=lV

180mV

Frequency

Response

OdB

Loudness

Control

(20 Hz)

+12dB

Volume=30dB

(20

kHz)

+4dB

Base

Boost

(50

Hz)

.5dB

Cut

(50

Hz)

-9.5dB

Boost

(10

kHz)

.OdB

Midrange

Cut

(10

kHz)

-7.OdB

POWER

AMPLIFIER

SECTION

RatedT

.H .D

.O1Z

Channel

Separation

(At

10 kHz)

70dB

Sensitivity

kHz For

40WOutput

.05V

Frequency

Response

20 Hz

+odB/-1

.OdB

50-20

kHz

0±0

.5dB

S/N

Ratio

Output

A-WTD

-102dB

Damping

Factor

At 50

Hz,

output=lW

.032

.H.D

PowerOutputAt

ohmLoad 44W

PHYSICAL

SPECIFICATIONS

Width

Height

x Depth 42x9

.5x28

.5x3

.7xll

inch

Net

Weight

6kg

(13

lbs)

Supply

Voltage

230V,

50Hz

(For

UK,

VDE,

SAA

VERSION)

115V,

60Hz

(For UL

Version)

REAR

PANELCONNECTIONS

WARNING

PREVENT

FIRE

ELECTRIC

SHOCK,

NOT

EXPOSE

THIS

APPLIANCE

RAIN

MOISTURE

G N

750



ENNA

MULTI

VIDEO



TAPE



TAPE 2



ROOM



PRE



MAIN

PRONO

SOUND

AUX

OUT

OUT OUT OUT

MIMI

OEM

The

lightning

flash

with

arrowhead

within

equilateral

triangle,

intended

alert

the user

the

presence

unnsulated

dangerousvoltage

within

the

products

enclo

sure

that

may

sufficient

magnitude

constitute

risk

electric

shock

persons

The

exclamation

point

within

equilateral

triangle

intended

alert

the

user

the

presence

important

operating

and

maintenance

(servicing)

Instructions

the

literature

accompanying

the appliance

REAR

PANEL

CONNECTIONS

ANTENNA

TERMINALS



TAPE

IN/OUT

ANTENNA

INPUT



MULTI-ROOM

OUTPUT

PHONO GROUND



PREAMP

OUT/MAIN

PHONO INPUT



NAD

LINK

IN/OUT

INPUT



SOFTCLIPPING

VIDEO

SOUND

INPUT



"A"

SPEAKERTERMINALS

AUX

(AUXILIARY

INPUT)



"B"

SPEAKERTERMINALS

TAPE

IN/OUT



AC POWERCORD

OUTLETS

OEM

OUT

SOFT

NAD

CLIPPING

OFF

yyyy

nlalaln

III

FRONT

PANEL

FRONT

PANEL

CONTROLS

POWER

AM/FM

SELECT

PHONES

STORE

PRESET

A/B

SPEAKERSELECTOR

TUNING

MODE

BASS

LISTEN

(CHOOSE

INPUT

FOR

LISTENING)

TREBLE

RECORD

(CHOOSE

INPUT

FOR

RECORDING)

BALANCE

MONO

UP/DOWNTUNING

LOUDNESSCOMPENSATION

VOLUME

DISPLAY

REMOTE

CONTROL

TRANSMITTER

Stop

(Scan

Back)

(Scan

Forward)

Selects

the

receiver's

input

for

listening

Disc

Selects

the

disc

changer

1«

(Skip

Back)

>>I

(Skip

Forward)

Play/Pause

PLAYER

CONTROLS

The

following

buttons

operate

the

corresponding

functions

certain

NAD

compact

disc

players

BATTERIES

Batteries

must be

installed

before the

remote

control

can

used

the

future,

the

receiver

does

not

respond

remote

commands,

the

batteries

may

weak

and

should

replaced

The

unit

requires

two

.5-volt

AA-size

(or

R6)

penlight

cells

Alkaline

cells

are

recommended,

for

maximum

operating

life

open

the

battery

compartment,

press

the

small

release

lever

between

the

ribbed

areas on

the

back

the

handset

When

installing

fresh

cells,

take

care

orient

them

shown

the

diagram

within

the

compartment

REMOTECONTROL

Since

the

705

remote

multi-product

controller,

its

buttons

are

arranged

product

category

RECEIVER

CONTROLS

Power



This

button

duplicates

the

function

the

green

Power

On/Off

button

the

front

the

receiver

Press

switch

the

power

Press

again

switch

off

the

power

leaving

the

receiver

Standby

mode

Speakers

Press

engage

disengage

the

speakers

Speakers

Press

engage

disengage

the

speakers

Mute

Press

shut

off

the

sound

temporarily

when

you

want

answer

the

telephone

for

example

little

sound

may

still

audible

Press

MUTE

again

rec'nre

the

sound

its

volume

level

Preset

Up/Down

Skips

the

ne~[

higher

lower

numbered

preset

station

Up/Down

Auto-seek

tuning

;

scans

down

frequency

and

stops

the

strong

station

Tune

Up/Down

Tunes

down

frequency

small

steps

These

buttons

also

alter

the

preset

number

when

you

are

storing

frequencies

the

presets

Volume

Up/Down

These

buttons

activate

small

motor

rotate the

receiver's

Volume

control

Numeric

Keypad

(0 to 9)

Press these

buttons

enter

preset

number

tuning

frequency

Then

press

ENTER

tell

the

receiver

that

you have

completed

your

selection

The

tuning

logic

recognizes

two-digit

entries

preset

numbers

and

digit

numbers

broadcast

frequencies

the

entry

invalid

(e .g

preset

number

above

39)

the

tuned

frequency

will

not

change

Enter

Press

this

button

complete

numeric

keypad

entry

Input Select

(FM,

AM,

Video,

Phono,

Aux,

Tape

Tape2,CD)

These

white

buttons

select

the

input

for

listening

TAPE

RECORDERCONTROLS

These

buttons

operate

the

corresponding

functions

certain

NAD

tape

recorders

Stop

Rec

(Recording)

Tape

Selects

the

receiver's

Tape

input

for

listening

Tape

Selects

the

receiver's

Tape

input

for

listening

(Rewind)

(Fast

Forward)

Pause

Play

TC404

T406

T407

TP3

TUNER

ADJUSTMENT

POINTS

T408

T409

T403

T402

SFR402



40S

TP2

TP1

(VT)

(GNO)

OTP4

T404

OTP5

T401

Figure

077



TP8

(TUNING)



L402

IC403

TC405

R403

Amplifier

Section

Power outputoffset adjustment

open

load,

meter

connected

speaker

switch

"A"

position

Adjust SFR101,let

the

reading

Adjust SFR102,let

the

reading

open

load,DC

meter

Adjust SFR103,let

the

open

load,DC

meter

Adjust SFR104,let

the

MAIN

ADJUSTMENT

POINTS

Figure

speaker

terminal

0+-25mV

.(L-channel)

(Fig

0+-25mV

.(R-channel)

(Fig

QuiesentCurrent

Adjustment

Allow

least

minutes

burn

before

performing

this

adjustment

connected

CN-15

base

(Fig

reading

.4mV

(I=20mA,+-5mA),(L-channel)

(Fig

11)

connected

CN-14

base

(Fig

reading

.4mV

(I=20mA,+-5mA),

(L-channel)

(Fig

11)

SPEAKER

TERMINAL

Figure

INSTRUMENTATION

CONNECTIONDIAGRAM

Figure

STANDARD

SIGNAL

GEN



SCOPE

TAPE

OUT



SET

STANDARD

SIGNAL

GEN

100.7M

0000

METER



METER

00o



TAPE

OUT

SET

ANT

-FM

ANT

FREQUENCY

COUNTER



/AM

STANDARD

SIGNAL

GEN

VTVM

TAPE 2

OUT

SET

SCOPE

ANT

Figure

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