Pioneer A-757 Manuale utente

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1

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SPARE

PARTS:

MASTER

STEREO

AMPLIFIER

le

evs

ass

Oar

“A-656"

is

not

available

in

U.S.

Operating

Instructions

The

illustration

shows

model

A-757.

Thank

you

for

buying

this

Pioneer

product.

Please

read

through

these

operating

instructions

so

you

will

know

how

to

operate

your

unit

properly,

After

you

have

finished

reading

the

instructions,

keep

the

manual

in

a

safe

place

for

future

reference.

In

some

countries

or

regions,

the

shape

of

the

power

plug

and

power

outlet

may

sometimes

differ

from

that

shown

in

the

drawings.

However,

the

method

of

connecting

and

operating

the

unit

is

the

same,

WARNING

::

To

PREVENT

FIRE

OR

SHOCK

HAZARD,

DO

NOT

EXPOSE

THIS

APPLIANCE

TO

RAIN

OR

MOISTURE.

IMPORTANT

NOTICE

[FOR

U.S.

and

Canadian

models]

The

serial

number

for

this

equipment

is

located

on

the

rear

panel.

Please

write

this

serial

number

on

your

enclosed

warranty

card

and

keep

it

in

a

secure

area.

This

is

for

your

security.

[For

Canadian

model]

CAUTION:

To

PREVENT

ELECTRIC

SHOCK

DO

NOT

USE

THIS

(POLARIZED)

PLUG

WITH

AN

EXTENSION

CORD,

RECEPTACLE

OR

OTHER

OUTLET

UNLESS

THE

BLADES

CAN

BE

FULLY

INSERTED

TO

PREVENT

BLADE

EXPOSURE.

ATTENTION

:;

POUR

PREVENIR

LES

CHOCS

ELECTRIQUES

NE

PAS

UTILISER

CETTE

FICHE

POLARISEE

AVEC

UN

PROLONGATEUR

UNE

PRISE

DE

COURANT

OU

UNE

AUTRE

SORTIE

DE

COURANT,

SAUF

Si

LES

LAMES

PEUVENT

ETRE

INSEREES

A

FOND

SANS

EN

LAISSER

AUCUNE

PARTIE

A

DECOUVERT.

LINE

VOLTAGE

SELECTOR

SWITCH

Only

multi-voltage

models

are

provided

with

this

switch.

U.S.,

Canadian,

European,

U.K.,

and

Australian

models

are

not

provided

with

this

switch.

Mains

voltages

in

Saudi

Arabia

are

127V

and

220V

only.

Never

use

this

model

with

110V

setting

in

Saudi

Arabia.

The

line

voltage

selector

switch

is

on

the

rear

panel.

Before

your

model

is

shipped

from

the

factory,

this

switch

is

set

to

the

power

requirements

of

the

destination.

Check

that

it

is

set

properly

before

plugging

the

power

cord

into

the

AC

wall

socket.

If

the

voltage

is

not

properly

set

or

if

you

move

to

an

area

where

the

voltage

requirements

differ,

adjust

the

selector

switch

as

follows.

1.

Use

a

medium-size

screwdriver.

2.

Insert

the

screwdriver

into

the

groove

on

the

voltage

selector,

and

adjust

so that

the

tip

of

the

arrow

points

to

the

voltage

value

of

your

area.

VOLTAGE

SELECTOR

120-127

HOV

2s0v

204

a

Py

eA

SF

Medium-size

screwdriver

@

PIONEER’

The

future

of

sound

and

vision.

iif

IMPORTANT

1

The

lightning

flash

with

arrowhead,

within

an

equilateral

triengle,

is

intended

to

alert

the

user

of

the

presence

of

uninsulated

"dangerous

voitage”

within

the

product's

enclosure

that

may

be

of

sufficient

magni-

tude

to

constitute

2

risk

of

electric

shock

to

persons.

CAUTION

RISK

OF

ELECTRIC

SHOCK

DO

NOT

OPEN

CAUTION:

ft

within

an

equila

fe

TO

PREVENT

THE

RISK

OF

ELECTRIC

SHOCK,

DO

NOT

f

the

presi

of

rapor

tant

REMOVE

COVER

{OR

BACK).

NO

USER-SERVICEABLE

operating

and

maintenence

isesvicing)

iastructions

in

PARTS

INSIDE.

REFER

SERVICING

TO

QUALIFIED

the

literature

accompanying

appliance.

SERVICE

PERSONNEL.

IMPORTANT

2

If

the

apparatus

is

fitted

with

AC

mains

power

out-

let(s),

see

REAR

PANEL

FACILITIES

for

convenient

connection

of

additional

Hi-Fi

component(s).

Make

all

connections

to

the

AC

outlet(s)

and

the

signal

terminals

first.

Connect

the

plug

to

the

wall

socket

last,

make

sure

that

the

power

switch

is

off.

READ

INSTRUCTIONS

—

Ali

the

safety

and

operating

instructions

should

be

read

before

the

appliance

is

operated

RETAIN

INSTRUCTIONS

~

The

operating

instructions

should

be

retained

for

future

reference.

HEED

WARNING

—

All

warnings

on

the

appliance

and

in

the

operating

instructions

should

be

adhered

to.

FOLLOW

INSTRUCTIONS

—

All

operating

end

use

in-

structions

should

be

foliowed.

WATER

AND

MOISTURE

—

The

applience

should

not

be

used

near

water

—

for

example,

near

a

bathtub,

washbow!,

kitchen

sink,

jaundry

tub,

in

a

wet

basement,

or

near

3

swimming

pool,

etc

LOCATION

~

The

appliance

should

be

installed

in

a

stable

location.

WALL

OR

CEILING

MOUNTING

—

The

appliance

should

not

be

mounted

to

a

wall

or

ceiling,

VENTILATION

—

The

appliance

should

be

situated

so

that

its

location

or

position

does

not

interfere

with

its

proper

ventilation.

For

example,

the

appliance

should

not

be

situated

on

a

bed,

sofa,

rug,

or

simi-

lar

surface

thet

may

block

the

ventilation

open-

ings;

or,

placed

in

@

built-in

installation,

such

as

2

bookcase

or

cabinet

that

may

impede

the

flow

of

air

through

the

ventilation

openings.

HEAT

—

The

appliance

shouid

be

situated

away

from

heat

sources

such

as

radiators,

heat

registers,

stoves,

or

ather

appliances

{including

emplifiers)

that

produce

heat.

POWER

SOURCES

—

The

appiiance

should

be

con-

nected

to

a

power

supply

only

of

the

type

described

in

the

operating

instructions

or

as

marked

on

the

appliance.

POWER-CORD

PROTECTION

—

Power-supply

cords

should

be

routed

so

that

they

are

not

likely

to

be

walked

on

or

pinched

by

items

placed

upon

or

against

them,

paying

particular

attention

to

cords

at

plugs,

convenience

receptacles,

and

the

point

where

they

exit

from

the

appliance.

POLARIZATION

—

If

your

purchased

product

is

provid-

ed

with

a

polatized

power

plug,

please

read

the

fol-

lowing

instructions.

This

product

is

equipped

with

a

polarized

alternating

current

line

plug

la

plug

hav-

ing

one

blade

wider

than

the

other).

This

plug

will

fit

into

the

power

outlet

only

one

way.

This

is

@

safety

feature.

if

you

are

unable

to

insert

the

plug

fully

into

the

outlet,

try

reversing

the

plug.

Hf

the

plug

should

still

fail

to

fit,

contact

your

eiectrician

to

replace

your

obsolete

outlet.

Do

not

defeat

the

safety

purpose

of

the

polarized

plug

CLEANING

—

The

appliance

should

be

cleaned

only

with

a

polishing

cloth

or

2

soft

dry

cloth.

Never

ciean

with

furniture

wax,

benzine,

insecticides

or

other

volatile

liquids

since

they

may

corrode

the

SAFETY

INSTRUCTIONS

FOR USE

IN

THE

UNITED

As

the

colours

of

the

wires

in

the

mains

lead

of

this

apparatus

may

not

correspond

with

the

coloured

KINGDOM

marking

identifying

the

terminals

in

your

plug

proceed

as

follows:

The

wires

in

this

mains

lead

are

coloured

in

accor-

The

wire

which

is

coloured

blue

must

be

connected

to

dance

with

the

following

code:

the

terminal

which

is

merked

with

the

letter

N

or

Blue:

Neutral

coloured

black

Brown:

Live

The

wire

which

is

coloured

brown

must

be

connected

to

the

terminal

which

is

marked

with

the

letter

L

or

coloured

red.

Equipment

sold

in

the

U.K.

is

not

supplied

with

a

power

plug.

POWER

LINES

—

An

outdoor

antenna

should

be

OUTOOOR

ANTENNA

GROUNDING

—

if

an

outside

located

away

from

power

lines.

antenna

is

connected

to

the

antenna

terminal,

be

NONUSE

PERIODS

—

The

power

cord

of

the

appliance

sure

the

antenna

system

is

grounded

so as

to

pro-

should

be

unplugged

from

the

outlet

when

left

vide

seme

protection

against

voltage

surges

and

_unused

for

a

long

period

of

time.

built

up

static

charges.

OBJECT

AND

LIQUID

ENTRY

—

Care

should

be

taken:

In

the

U.S.A,

section

810

of

the

Nationa!

Etectri-

so

that

objects

do

not

fall

and

liquids

are

not

spilled

cal

Code,

ANSI/NFPA

No.

70-1984,

provides

inte

the

enclosure

through

openings

information

with

respect

to

proper

grounding

of

DAMAGE

REQUIRING

SERVICE

—

The

appliance

the

mast

and

supporting

structure,

grounding

of

should

be

serviced

by

a

Pioneer

authorized

service

the

lead-in

wire

to

an

antenna

discharge

unit,

size

center

or

qualified

service

personnel

when

of

grounding

conductors,

ocation

of

antenna

dis-

@

The

power-supply

cord

or

the

plug

has

been

charge

unit,

connection

to

grounding

electrodes,

damaged;

or

and

requirements

for

the

grounding

electrode:

See

®

Objects

have

fallen,

or

liquid

has

been

spilled

into

Fig.

A.

the

appliance;

or

CART

—

An

appliance

and

cart

combination

should

be

@

The

appliance

has

been

exposed

to

rain;

or

moved

with

care.

Quick

stops,

excessive

force,

@

The

appliance

does

not

appear

to

operate

normally

ang

uneven

surfaces

may

cause

the

appliance

and

or

exhibits

a

marked

change

in

performance:

or

cart

combination

to

overturn.

@

The

appliance

has

been

dropped;

or

the

enclosure

damaged.

SERVICING

—

The

user

should

not

attempt

to

service

the

appliance

beyond

that

described

in

the

oper-

ating

instructions.

For

all

other

servicing,

contact

the

nearest

Pioneer

authorized

service

center

a}

Use

No.

10

AWG

(5.3

mm’)

cop-

per,

No.8

AWG

(8.4

mm’)

aiumi-

num,

No.1?

AWG

(1.0

mm?)

copper-ciad

steel,

bronze

wire,

or

larger

as

ground

wire,

b)

Secure

antenna

lead-in

and

Lest

ground

wires

to

house

with

stand-

ui

re

off

insulators

spaced

from

4

feet

Mentone

B

(1.22

meters)

to

6

feet

(1.83

meters}

apart

ANTENNA

6)

Mount

antenna

di

WIRE

closely

as

possible

to

wh

in

enters

how

TO

EXTERNAL

—

d)__Use

jumper

wire

not

smaller

than

POWER

LINES

SERVICE

ENTRANCE

CONDUCTORS

+

age

unit

ag

re

lead-

ANTENNA

;

A

EG

Ge

No.6

AWG.(13.3

mm}

copper,

of

PRODUCT

the

equivalent,

whesi

a

separate

ce

H

antenne-grounding

electrode

is

Le

crouno

RE

e®

AS

Na

used

SERVICE

ENTRANCE

|f}

CLAMPS

UNIT

¢

See

NEC

Section

810-27

tj}.

EQUIPMENT

GROUND

WIRE

a,b

4,

GROUND

POWER

SERVICE

zp

CLAMPS

GROUNI

fe.g.

int

OPTIONAL

ANTENNA

GROUNDING

ELECTRODE

BONDING

He

DRIVEN

8

FEET

(2.44mi

Cabinets

JUMPERd

=

8

INTO

THE

EARTH

8

iF

REQUIRED

BY

FIG.A

$

Local

coves

See

NEC

SECTION

810-21

(fh,

<ARB1175>

E

FEATURES

CONNECTIONS

CONTENTS

3

PANEL

FACILITIES

Ss.0r2

teicbrite

Fete

soiree

ng

2

tie

Ste

ei

6

OPERATIONS

°-

TROUBLESHOOTING

SPECIFICATIONS

‘oo

oct

terre

treet

tee

t

tence

teen

ene

FEATURES

These

operating

instructions

are

for:

A-757;

150W

+

150W/4

©

(DIN)

power

model

A-656;

120W

+

120W/4

Q

(DIN)

power

model

The

illustrations

and

text

in

this

manual

refer

basically

to

A-757.

¢

Drive

capacity

150W

+

150W/4

Q

(DIN)

matching

to

high

power

and

low-impedance-type

speaker

system.

[model

A-856+

+++

120W

+

120W/4

Q

(DIN)]

*

The

use

of

DIRECT

circuit

assures

high

fidelity

playback

of

consistent

frequency

characteristics,

accompanied

by

maximum

clarity.

e

REC

SELECTOR

switch

makes

tape

editing

very

simple.

e

Clean

ground

technology

prevents

noise

on

power

line

to

flow

to

the

signal

ground

line,

permitting

clean

sound

reproduction.

¢

Non-Switching

Circuit

Type

Ill

(A-656

is

Type

II)

is

employed

to

realize

high

quality

sound

with

minimum

distortion.

*

Comes

with

a

built-in

phono

equalizer

which

accepts

MC

cartridge.

¢

Casted

Power

Transformer

(A-757

only)

*®

Honeycomb

Frame

Chassis

e

Honeycomb

Heat

Sink

3

<ARB1175>

E

q

:

CONNECTIONS

CD

piayer

=o:

©

Speaker

ouT

REC

PLAY

REC

PLAY

REC

PLAY

system

B

(R)

t

®re|

.

@

@r

@

rR

®rS

@r@

Speaker

system

B

(L)

Not

provided

in

|

the

U.K.

model.

|

swircve

TOTAL

TOOW

MAX.

1OOW

VOLTAGE

SELECTOR:

r0az7v

ov

|

2aov

229V

Not

provided

in

|

Cn

the

U.S.

and

|

YA

Canadian

model

The

illustration

shows

model

A-757,

Shorting

bars:

CAUTION:

Do

not

insert

the

shorting

bars

into

other

terminals

after

removing

them.

L

Model

A-757

only.

L{

A-656...ADPT/TAPE

3

\A-757...ADPT

1/TAPE

3

To

an

AC

wall

socket

Speaker

system

A

(L)

Speaker

system

A

(R)

Video

disc

player

Tuner

VCR

etc.

Turntable

4

<ARB1175>

E

CONNECTIONS

CONNECTING

SPEAKER

CORDS

1.

Strip

off

the

vinyl

covering

and

twist

the

tip

of

the

wire

core.

Twist

the

wire

core.

2.

Loosen

the

knob

and

insert

the

wire

core

into

the

terminal

hole.

3.

Tighten

the

knob

to

fix

the

wire

core

in

place.

NOTE:

Do

not

allow

the

wire

core

to

protrude

and

touch

other

terminals

or

wires.

If

the

cores

of

different

wires

touch,

damage

may

be

caused

to

your

components.

Speaker

Impedance

When

speaker

systems

are

connected

to

only

one

of

the

SPEAKERS

A

or

B

terminals,

such

speakers

should

have

rated

impedance

in

the

range

of

4-16Q.,

When

speakers

are

connected

to

both

the

A

and

B

terminals,

they

should

have

a

rated

impedance

in

the

range

of

8-

32.

CONNECTING

INPUT/OUTPUT

CORDS

Left

channel

Right

channel

WO

mas

ight

channe!

~@

See

a

CCliar

Red

plug

White

plug

Connect

the

white

plug

to

the

L

(left)

side,

and

the

red

plug

to

the

R

(right)

side.

Be

sure

to

push

the

plugs

in

securely.

TO

USE

THE

COMPONENT

CONNECTED

TO

THE

ADPT

2

TERMINALS

(A-757

only)

1.

Set

the

POWER

switch

to

OFF.

2.

Remove

the

two

shorting

bars

from

the

ADPT

2

terminals.

bord

@

OUT

Shorti

NOTE:

horting

bars,

Remove

the

shorting

bars

to

connect

a

graphic

equalizer

to

these

terminals,

Always

keep

the

bars

inserted

while

the

terminals

are

not

in

use,

and

take

care

not

to

lose

them.

A-757

Graphic

equalizer

The

U.K.

moedel

is

not

provided

with

the

AC

OUTLETS.

AC

OUTLETS

(SWITCHED)

Power

supplied

through

these

outlets

is

turned

on

and

off

by

the

amplifiers

POWER

switch.

Total

electrical

power

consumption

of

connected

equipment

should

not

exceed

100

W

(model

A-656

of

the

other

destination

are

150W).

AC

OUTLET

(UNSWITCHED)

Power

flows

continually

to

this

outlet,

regardless

of

whether

the

amplifier

is

switched

ON

or

OFF.

Electrical

power

consumption

of

the

connected

equipment

should

not

exceed

100

W.

The

equipment

should

be

disconnected

by

removing

the

power

plug

from

the

wall

socket

when

not

in

regular

use,

e.g.,

when

on

vacation.

NOTE:

Do

not

connect

appliances

with

high

power

consumption

such

as

heaters,

irons,

or

television

sets

to

the

AC

OUTLETS

in

order

to

avoid

overheating

or

fire

risk.

5

<ARB1175>

E

|

|

/

|

|

PANEL

FACILITIES

[FRONT

PANEL]

@

POWER

switch/indicator

Press

to

turn

power

to

the

unit

ON

and

OFF.

When

the

power

is

ON,

indicator

lights.

@

PHONES

jack

When

using

headphones,

insert

the

plug

into

this

jack.

@

SPEAKERS

selector

switch

Use

this

switch

to

listen

to

the

speaker

systems

connected

to

the

SPEAKERS

terminals.

OFF:

Released

position:

No

sound

is

heard

from

the

speaker

system.

Set

to

this

position

when

listening

with

headphones.

A:

For

reproduction

of

sound

with

the

speaker

systems

connected

to

the

SPEAKERS

A

terminals.

B:

For

reproduction

of

sound

with

the

speaker

systems

connected

to

the

SPEAKERS

B

terminals.

A+B:

For

reproduction

of

sound

with

the

speaker

systems

connected

to

SPEAKERS

A

and

B

terminals.

@

BASS

tone

control

Use

to

adjust

the

low-frequency

tone

at

low

volume

level.

The

center

position

is

the

flat

(normal)

position.

When

turned

to

the

right,

low-frequency

tones

are

emphasized;

when

turned

to

the

left,

low-frequency

tones

are

de-emphasized.

NOTE:

This

function

does

not

operate

when

the

DIRECT

switch

is

in

the

ON

position.

®

TREBLE

tone

contro!

Use

to

adjust

the

high-frequency

tone

at

low

volume

level.

The

center

position

is

the

flat

(normal)

position,

When

turned

to

the

right,

high-frequency

tones

are

emphasized;

when

turned

to

the

left,

high-frequency

tones

are

de-emphasized.

6

<ARB1175>

E

A-757...ADPT

1/TAPE

3

Model

A-656

is

not

equipped

with

@

and

®.

bere

3

)

NOTE:

This

function

does

not

operate

when

the

DIRECT

switch

is

in

the

ON

position.

©

BALANCE

control

Should

normally

be

left

in

the

center

position.

Adjust

balance

if

the

sound

is

louder

from

one

of

the

speakers.

If

the

right

side

is

louder,

turn

toward

the

LEFT

position

and

if

the

left

side

is

louder,

turn

toward

the

RIGHT

position.

NOTE:

This

function

does

not

operate

when

the

DIRECT

switch

is in

the

ON

position.

@

PHONO

EQ

switch/indicator

(A-757

only)

When

not

using

a

phono

input,

turn

the

phono

equalizer

power

circuit

off

in

order

to

prevent

it

from

collecting

noise

during

playback

of

other

sources.

ON:

The

indicator

lights:

Always

set

to

this

position

when

using

a

phono

input.

Immediately

after

turning

ON,

audio

signal

will

be

muted

for

several

seconds

until

circuit

operation

becomes

stable.

OFF:

The

indicator

goes

off:

Set

to

this

position

when

not

using

a

phono

input.

LOUDNESS

switch/indicator

Use

when

listening

at

low

volume

levels.

ON:

The

indicator

lights:

Boosts

low

and

high

frequencies

to

give

added

punch

to

playback

even

at

low-volume.

OFF:

The

indicator

goes

off:

Should

normally

be

left

in

this

position.

NOTE:

This

switch

does

not

operate

when

the

DIRECT

switch

is

in

the

ON

position.

PANEL

FACILITIES

©

ADPT

1/TAPE

3

switch/indicator

(ADPT/TAPE

3

switch

in

the

A-656)

Use

this

switch

to

listen

to

tape

playback,

or

to

listen

to

the

sounds

being

recorded

during

tape

recording.

ON:

The

indicator

lights:

Press

when

listening

to

the

playback

sound

of

the

tape

deck

or

the

adaptor

connected

to

the

ADPT

1/TAPE

3

IN/PLAY

terminals,

or

to

monitor

the

sound

being

recorded

on

the

tape

deck

connected

to

the

ADPT

1/TAPE

3

OUT/REC

terminals.

OFF:

The

indicator

goes

off:

Normally

leave

the

switch

in

this

position.

NOTE:

When

the

DIRECT

switch

is

set

to

ON,

this

function

does

not

operate

and

no

signal

is

output

at

the

ADPT

1/TAPE

3

OUT/REC

terminals.

@

DIRECT

switch/indicator

Use

this

switch

when

you

do

not

wish

to

pass

the

output

from

input

terminal

equipment

through

the

various

frequency

adjusting

circuits

and

adaptor

terminals

(ADPT

1/TAPE

3,

ADPT

2,

BASS,

TREBLE,

BALANCE,

LOUDNESS).

ON:

When

the

switch

is

in

this

position,

the

indicator

lights

and

the

signals

input

from

the

input

terminals

are

reproduced

without

passing

through

the

various

frequency-adjusting

circuits.

This

results

in

flat,

pure

sound

which

is

a

more

faithful

reproduction

of

the

input

source.

OFF:

When

the

switch

is

in

this

position

the

indicator

goes

out

and

the

signal

passes

through

the

various

frequency

adjusting

circuits.

@

PHONO

SELECTOR

switch

Set

in

accordance

with

the

type

of

cartridge

used

in

you

turntable.

MM:

Set

to

this

position

when

using

a

moving

magnet

cartridge,

or

a

MC

(moving

coil)

cartridge

with

high

output

of

1

mV

or

more.

MC:

Set

to

this

position

when

using

a

moving

coil

cartridge.

MM

SUBSONIC/MC

SUBSONIC:

Subsonic

filter

for

moving

coil

or

moving

magnet

cartridges

to

cut

ultralow

frequency

noise

less

than

17

Hz

generated

when

playing

a

warped

record.

When

using

a

high-output

moving

coil

cartridge,

set

this

switch

to

MM

or

MM

SUBSONIC.

@

VOLUME

CONTROL

Use

to

adjust

volume

level.

NOTE:

This

unit

is

equipped

with

a

circuit

that

attenuates

the

effect

of

tone

and

loudness

controls

at

volume

is

turned

up.

@

MUTING

switch/indicator

(A-757

only)

Use

to

temporarily

cut

sound

volume.

ON:

The

indicator

lights.

The

sound

volume

will

be

cut

off.

OFF:

The

indicator

goes

off.

The

sound

will

return

to

its

previous

volume.

@

INPUT

SELECTOR

switch

Use

to

select

playback

source.

LINE:

Set

to

this

position

when

listening

to

the

programs

from

a

component

connected

to

the

LINE

terminals.

TUNER:

Set

to

this

position

when

listening

to

AM

or

FM

broadcasts

with

a

tuner,

-

PHONO:

Set

to

this

position

when

listening

to

record

playback

on

a

turntable.

cD:

Set

to

this

position

when

listening

to

a

compact

disc

playback

with

aCbD

player.

DAT/TAPE

1:

For

playback

with

a

tape

deck

or

digital

audio

tape

deck

connected

to

the

DAT/TAPE

1

terminals.

TAPE

2:

For

playback

with

a

tape

deck

connected

to

the

TAPE

2

terminals.

®

REC

SELECTOR

switch

Switch

to

select

recording

signal.

When

set

at

other

than

SOURCE

or

OFF

position,

signals

can

be

recorded

during

playback

of

the

equipment

selected

by

INPUT

SELECTOR

switch.

TUNER:

To

record

from

a

TUNER.

cD:

To

record

from

a

CD

player.

OFF:

In

this

position

nothing

from

the

REC

terminals

of

DAT/TAPE

1

and

TAPE

2

will

be

output.

Select

it

when

not

recording;

output

to

tape

decks

will

be

disconnected,

improving

sound

quality.

SOURCE:

To

record

the

equipment

selected

by

INPUT

SELECTOR

switch.

TAPE:

12

To

record

(copy)

from

the

tape

deck

of

DAT/TAPE

1

terminals,

over

to

the

tape

deck

of

TAPE

2

terminals.

21

To

record

(copy)

from

the

tape

deck

of

TAPE

2

terminals,

over

to

the

tape

deck

of

DAT/TAPE

1

terminals.

NOTE:

The

REC

SELECTOR

switch

has

no

effect

on

the

recording

out

put

of

the

ADPT

1/TAPE

3

terminals.

z

<ARB1175>

E

PANEL

FACILITIES

[REAR

PANEL]

@

TAPE

2

PLAY

terminals.

@

DAT/TAPE

1

PLAY

terminalis.

@

TAPE

2

REC

terminals.

@

DAT/TAPE

1

REC

terminals.

@

SPEAKERS

B

terminals

(right

channel).

.@

SPEAKERS

8

terminals

(left

channel).

@

AC

OUTLETS.

(Not

provided

in

the

U.K.

model)

@®

VOLTAGE

SELECTOR.

(Not

provided

in

the

U.K.

model

and,

U.S.

&

Canadian

models

of

A-757)

@®

Power

cord.

Connect

this

cord

to

an

AC

wall

socket,

or

the

AC

outlet

of

an

audio

timer.

@®

SPEAKERS

A

terminals

(left

channel).

8

<ARB1175>

E

@

a

SRTEREG

mewirenen

ora

Toow

aux

“Sao

tas

The

illustration

shows

model

A-757,

@

SPEAKERS

A

terminals

(right

channel).

@

ADPT

1/TAPE

3

OUT/REC

terminals.

ADPT/TAPE

3

OUT/REC

terminals.

(A-656

only)

@

ADPT

1/TAPE

3

IN/PLAY

terminals.

ADPT/TAPE

3

IN/PLAY

terminals.

(A-656

only)

®

Shorting

bars.

(A-757

only)

@

ADPT

2

IN

terminals.

(A-757

only)

@

ADPT

2

OUT

terminals.

(A-757

only)

@

PHONO

terminals.

@

Turntable

ground

terminal

(GND).

@

LINE

terminals.

@®

TUNER

terminals.

@

CD

terminals.

OPERATIONS

BEFORE

BEGINNING

OPERATIONS

Set

the

controls

and

switches

as

follows:

See

page

6.

1.

Set

the

VOLUME

CONTROL

to

minimum.

@

2.

Set

the

POWER

switch

to

ON.

©

3.

Set

the

SPEAKERS

switch

to

A,

BorA+B.@

4

Set

the

BALANCE

control

to

the

center

position.

©

5.

Set

the

DIRECT

switch

to

OFF.

@

6.

Set

the

ADPT

1/TAPE

3

switch

to

OFF.

©

PLAYBACK

PROCEDURES

1.

Set

the

INPUT

SELECTOR

or

ADPT

1/TAPE

3

switch.

@,

©

How

to

select

playback

source;

¢

When

listening

to

programs

from

equipment

connected

to

the

LINE

terminals:

Set

to

[LINE].

«

When

listening

to

an

AM/FM

broadcast:

Set

to

[TUNER].

¢

When

listening

to

a

record:

Set

to

[PHONO].

PHONO

EQ

switch

to

ON.

(A-757

only)

Set

PHONO

SELECTOR

switch

to

MM

(MM

SUBSONIC)

or

MC

(MC

SUBSONIC)

according

to

the

type

of

cartridge

being

used.

*

When

listening

to

a

compact

disc:

Set

to

[CD].

=

«

When

listening

to

a

tape:

Set

to

[DAT/TAPE

1],

[TAPE

2]

or

[ADPT

1/TAPE

3].

2.

Operate

the

playback

equipment.

3.

Adjust

playback

volume

with

the

VOLUME

CONTROL

on

this

unit.

@

RECORDING

TAPES

1.

Select

the

recording

source

with

REC

SELECTOR

switch.

«

When

set

to

the

SOURCE

position,

the

signals

from

the

device

selected

by

INPUT

SELECTOR

switch

are

recorded.

(To

record

signals

from

the

device

connected

to

the

PHONO

or

LINE

terminals,

set

the

REC

SELECTOR

switch

to

SOURCE

and

set

the

INPUT

SELECTOR

switch

to

PHONO

or

LINE.)

When

recording

the

signal

from

PHONO

terminal,

set

PHONO

EQ

switch

to

ON

position.

(A-757

only)

¢

Recording

is

impossible

with

the

switch

set

to

OFF.

NOTE:

When

this

switch

is

set

at

other

than

SOURCE

position,

the

equipment

selected

by

REC

SELECTOR

switch

can

be

recorded,

regardless

of

the

setting

of

INPUT

SELECTOR

and

DIRECT

switches,

2.

When

using

the

tape

deck

connected

to

the

ADPT

1/TAPE

3

terminals

for

recording.

©

The

source

selected

with

the

INPUT

SELECTOR

will

be

recorded,

regardless

of

the

REC

SELECTOR

position.

However,

recording

will

not

be

possible

when

the

DIRECT

switch

is

ON.

3.

Begin

recording

by

operating

the

source

equipment

and

tape

deck.

Refer

to

the

operating

instructions

for

your

tape

deck

for

proper

operating

procedures.

MONITORING

WHILE

RECORDING

When

recording

of

the

tuner

or

CD

only.

On

a

3-head

tape

deck,

sound

can

be

concurrently

heard

while

recording.

This

operation

of

checking

the

sound

quality

and

recording

level

is

called

“monitoring.”

At

the

time

of

monitoring,

set

the

INPUT

SELECTOR

switch

of

this

equipment

in

the

following

way,

to

match

the

tape

deck

on

which

recording

is

being

done.

When

recording

on

the

tape

deck

of

DAT/TAPE

1

terminals:

Set

to

DAT/TAPE

1.

«

When

recording

on

the

tape

deck

of

TAPE

2

terminals:

Set

to

TAPE

2.

*

When

recording

on

the

tape

deck

of

ADPT

1/TAPE

3

terminals:

ADPT

1/TAPE

3

switch

to

ON.

COPYING

TAPES:

When

two

decks

(or

a

double

cassette

deck)

are

used,

you

can

record

the

sounds

from

one

deck

onto

the

other.

Application

examples:

*

To

make

a

tape

copy

with

contents

identical

to

the

original

tape.

*

To

edit

a

recording

of

a

radio

broadcast

in

order

to

cut

out

unwanted

commercials,

reocrding

only

desired

material

onto

another

tape.

When

using

two

tape

decks

1.

Load

tapes

for

playback

(pre-recorded

tape)

and

recording

into

the

respective

tape

decks.

2.

Select

the

tape

deck

to

be

copied

with

REC

SELECTOR

switch.

«

When

copying

from

the

tape

deck

of

DAT/TAPE

1

terminals,

to

the

tape

deck

of

TAPE

2

terminals:

Set

to

1

B>

2.

e

When

copying

from

the

tape

deck

of

TAPE

2

terminals,

to

the

tape

deck

of

DAT/TAPE

1

terminals:

Set

to

2

>

1.

NOTE:

The

tape

selected

with

REC

SELECTOR

switch

can

be

copied,

regardless

of

the

settings

of

INPUT

SELECTOR

and

DIRECT

switches.

3.

Operate

the

tape

decks

to

begin

copying.

Set

the

tape

deck

with

the

original

(playback)

tape

to

the

playback

mode,

and

set

the

tape

deck

with

the

blank

tape

to

the

recording

mode.

Playback

using

graphic

equalizer

As

to

A-757,

it

can

deal

with

playback

of

all

sources

when

connecting

a

graphic

equalizer

to

the

ADPT

2

terminals.

However,

playback

is

not

possible

when

the

DIRECT

switch

is

ON.

NOTE:

Remove

the

shorting

bars

before

using

these

terminals.

Always

keep

the

bars

inserted

while

the

terminals

are

not

in

use,

and

take

care

not

to

lose

them

(A-757

only).

9

<ARB1175>

E

TROUBLESHOOTING

Incorrect

operations

are

often

mistake

n

for

trouble

and

malfunctions.

If

you

think

that

there

is

something

wrong

with

this

component

check

the

points

below.

Sometimes

the

trouble

may

lie

in

another

component.

Investigate

the

other

components

and

electrical

appliances

being

used.

If

the

trouble

cannot

be

rectified

even

after

exercising

the

checks

listed

below,

ask

your

nearest

PIONEER

authorized

service

center

or

your

dealer

to

carry

out

repair

work.

Symptom

4

Probable

Cause

Remedy

No

power

supplied

to

unit

Power

plug

is

disconnected

from

outlet.

The

component

power

plug

has

been

plugged

into

another

component

power

outlet

(e.g.

timer,

etc,),

but

power

to

that

unit

is

disconnected.

i

Insert

plug

securely

in

outlet.

Turn

on

power

to

the

other

component.

No

sound

Connecting

cords

are

disconnected

from

terminals,

or

connected

incorrectly.

Terminals,

or

connecting

cords

pin

plugs

are

dirty.

The

INPUT

SELECTOR

or

ADPT

1/TAPE

3

switch

selected

does

not

match

the

component

being

played

back.

Operation

of

other

components

is

incorrect.

The

SPEAKERS

selector

switch

is

set

to

“OFF”.

:

The

PHONO

EQ

switch

is

OFF

position

(When

listening

PHONO

in

A-757.)

Shorting

bars

are

not

inserted

into

the

ADPT

2

terminals.

Connect

securely.

Clean

terminals

and

plugs.

Set

switches

correctly

(PHONO,

TUNER,

CD,

LINE,

DAT/TAPE

1,

TAPE

2).

Set

the

ADPT

1/TAPE

3

to

OFF.

Consult

the

opeating

instructions

for

the

other

components.

Set

the

switch

to

A,

B

or

A+B.

Set

PHONO

EQ

switch

to

ON

position.

Insert

the

shorting

bars

properly.

|

No

sound

from

one

speaker

Connecting

cords

or

speaker

cords

are

disconnected

on

that

side.

BALANCE

contro!

has

been

adjusted

to

one

side.

Connect

securely.

Adjust

BALANCE

control

to

center

position.

fe

an't

record

tapes

The

position

of

the

REC

SELECTOR

switch

is

incorrect.

Connections

are

incorrect.

Operation

of

tape

deck

is

incorrect.

Set

switch

correctly.

(See

section

RECORDING

TAPES).

Reconnect

cords

properly.

Consult

the

operating

instructions

for

the

tape

deck,

Can't

perform

tape

copying

The

position

of

the

REC

SELECTOR

switch

is

incorrect.

Operation

of

tape

decks

is

incorrect.

Set

switch

correctly

(See

section

COPYING

TAPES).

Consult

the

operating

instructions

for

the

tape

decks.

POWER-CORD

CAUTION

Handle

the

power

cord

by

the

piug.

Do

not

pull

out

the

plug

by

tugging

the

cord

and

never

touch

the

power

cord

when

your

hands

are

wet

as

this

could

cause

a

short

circuit

or

electric

shock.

Do

not

place

the

unit,

apiece

of

furniture,

etc.,

on

the

power

cord,

or

pinch

the

cord.

Never

make

a

knot

in

the

cord

or

tie

it

with

other

cords.

The

power

cords

should

be

routed

such

that

they

are

not

likely

to

be

stepped

on.

A

damaged

power

cord

can

cause

fire

or

give

you

an

electrical

shock.

Check

the

power

cord

once

in

a

while.

When

you

find

it

damaged,

ask

your

nearest

PIONEER

authorized

service

center

or

your

dealer

for

a

replacement.

10

<ARB1175>

E