Pioneer SA-610 Service manual

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EefvicecVlanual

STEREO

S

AMPLIFIER

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This

service

manual

CONTENTS

applicable

is

to

the

KU

type.

I.SPECIFICAT|ONS

FRONTPANELFACILITIES

2. DISASSEMBLY

3.

4.PARTSLOCATION

5. BLOCKDIAGRAM

LEVELDIAGRAM

6.

T.CTRCUITDESCRIPTIONS...

S.ADJUSTMENTS

EXPLODEDVIEWSANDPARTSLIST

9.

.......3

.....4

....

......6

......8

.......8

...'

......10

. . . .

. . .

6

9

11

SCHEMATIC

10. PATTERNS

10.1

10.2

10.3

10.4 PACKING .

11.

DIAGRAM,

PARTS

AND

Miscellanea

Board

Diagram

Connection

P.C. Board

Schematic P.C. Parts List of

P.C. BOARD

LIST

Diagram

Assembly

'.-..'.14

. .. ...

15 18 21

22

(

r

siA-ci1

1.

SPECIFICATIONS

Semiconductors

lCs

Transistors Diodes

Amplifier

Continuous nel, Hertz

Section

p0wer

min., at

with

no

8ohms

more

output

of

from

than

0.\3%total

......

45watts* 20Hertz

per

to

harmonic

27

18

chan-

20,000

distortion.

power

. .

(T.H.D.

(20

Hertz

to 20,000 Hertz,

output

.No more

(50

Hertz : 7,000 Hertz=

output

power

to

. . No more

output

No more

20.000 Hertz,

....2.5mV/50kilohms

150mV/50 kilohms

....150mV/50kilohms

150mV/50

O.O5o/o, 1.000H2)

than

0.02% 4 :

1

than

0.03%

than

O.O2%

S ohms) . .

... 150mV

.... A,B,OFF

50

kilohms

130mV

Total Harmonic

ohms,

I

22.5 watts

Intermodulation

ohms, from

8 continuous

22.5 watts

Damping

(Sensitivity/lmpedance)

I nput

PHONO TUNER AUX. TAPE

Phono

Overload Level

PHONO

Output

(Level)

TAPERECl,2.. Speaker

from

per

rated

per

Factor

PLAY

Distortion

AUX)

channel'power

Distortion

AUX)

channel

(2OHertz

1

,2

Frequency

PHONO

TUNER,

Tone Control

BASS. TREBLE

Subsonic

Loudness Contour

Hum and Noise

PHONO

TUNER,AUX,TAPEPLAY

Response

(R

IAA Equalization)

AUX, TAPE

Filter

.

(Volume

. . . .

(lHF,

short-circuited, A network)

PLAY

control

+6dB

Miscellaneous

Power

Requirements PowerConsumption Dimensions

16-9/16(W)

Weight

(without

Furnished

Operatinglnstructions

NOTE: Specifications without notice

*

Measured Regulation rule

package)

Parts

and the

due

pursuant

on

to

Power

. 42O(Wl

x

design subject

improvements.

Federal

to the

Output Claims

20Hz to 20.000H210.3d8

1.2 . .

1OHz to

....t10dB(10,000H2)

set at

(100H2),

1,2.

3-11l16(H)

to

Trade

60,000H2

..t10dB(100H2)

. 15Hz

-40dB +3dB

., ...

AC

120V,60H2

...100W(UL)

x

94(H) x

x 13-11/16(D)

(15

6.9kg

........1

possible

for

modifications

Commission,s

Amplifiers.

cl

13dB

(-6dB/oct)

position)

(10,000H2)

. . .82dB

IOOdB

347(D)

lb

mm

in

3oz)

Trade

2. FRONT

PANEL FACILITIES

POWER

O

this switch

Set There the muting unpleasant

power

SPCETER

@

Use this selector OFF:

A: Sound

B: Sound

BASS

@

Use these controls

you

lf to right emphasize the sound versely, turning center

You

can use

high-frequency

SWITCH

to ON to supply

be a short

will

circuit

noise that

is on and

off

SELECTOR

to select

not obtained

Sound

obtained

A

speaker

B

speaker

set

from its center

position, you

terminals.

obtained

terminals.

TREBLE CONTROLS

AND

the tone

the bass

the

treble

range.

power

delay when

has been actuated

is

sometimes

.

the

from

to adjust the bass

switch to ON and

in

the

will

attenuate

control to adjust

it is

speaker

from

position, you

control to

system.

speakers.

speakers

turn the bass

low-frequency

the sound.

to the amplifier.

to ON. because

set

to suppress

generated

connected

the left

when the

and the

be able to

will

range.

from the

the sound

the

to the

treble.

control

Con-

in the

POWER

@

This meter allows

the

on nominal

if

ampl

FUNCTTON

@

The TUNER,

up

light se lector.

FUNCTION

@

this

Use

function

the

to the

ing TUNER:

PHONO:

TAPE 1:

AUX: Set

METER

fluorescent

impedance

ier's speaker

PHONO, TAPE,

in accordance

selector

indicator above

position

here when

Set connected

(The

here when

Set connected

(The

here when

Set connected

(The

which is connected (The

you

to read

display

terminals.

tube when speakers

ohms are connected

of 8

INDICATORS

the

with

SELECTOR

to select

TUNER

PHONO

TAPE

here

AUX

the

function

of the

listening

TUNER

to the

function indicator

playing

PHONO

to

the

function indicator

playing

TAPE 1

to the

function

listening

when

function indicator

out the

AUX

program

indicator

to the

rated

function indicators

position

source. panel

meter

selector

to broadcasts

jacks.

records on a

jacks.

tapes on

jacks.

lights up.) to a AUX

lights

power

with a to

function

the

of

When set.

correspond-

will light up.

on a

lights up.)

turntable

lights up.)

the tape

program jacks.

up.)

level

the

tuner

deck

source

r

i

I i

I

f'

volurvrE

O

Use this and level. No

@

Plug listen

NOTE: Set the speaker

phones.

€)

When filter subsonic

15Hz suppressing by record hear this intermodulation speaker during

@

Set

controls. control flat. tridge acoustics.

control

headphones.

sound will

nCRopHoNE

the headphones

through

suesoNtc

this

switch is

with a cut-off frequency

filter

in

a 6dB/oct

ultra-low-frequency

warp

noise

system.

record

rorue

this

This

swtrcH

switch

When

circuits

function

and

speaker

coNTRoL

to adjust

Turn

your

selector

FTLTER

serves to

and

but

distortion

Set this

play

for

to ON

set to the upper

are disengaged

is convenient

the output level

it

clockwise

be heard

JAcK

into

stereo headphones.

to

OFF when

set to

the

attenuate frequencies

slope.

other

it is a factor

switch

the best

when

tone

to increase

you

if

set it

jack

this

when

listening

SWTTCH

'l

position,

5Hz

of 15Hz

lt

is

therefore

noise

which

causes. You

in

the

and it

adjusting

quality

may

to the

effect.

the bass

(OFF)

position,

and frequency

for

checking

and listening

to

the

speakers

the

,,0.,'

to

you

want to

only

with head-

the

subsonic

is

actuated.

lower

effective

generated

is

cannot

actually

generation damage

position

1SHz

and

the response phono

output

The

than

in

of

your

treble

tone

is

car-

room

LouolrrEss

@

When

listening

turned down, treble will When to hear The this deficiency.

come through

punch

a

rnpe

@

Set this performance

the

NOTE: Set

records

BalarucE

@

Use this right right, it higher.

Conversely,

it means

Therefore, adjust.

be accentuated.

the volume

the bass

loudness

even

2

switch

TAPE

jacks

2

the

switch

or

broadcasts,

control

channels.

means

Turn

the

if

that

turn

swtrcH

performance

to a

set this

and treble

switch

By

much

when

switch

is low,

the volume

the human

is

thus designed

setting it

more

strongly

swrTcH

ON

etc.

balance

the

sound

balance

position

deck

monitoring

selected

to the

on a tape

or when

to the upper

coNTRoL

to

lf

that the volume balance control

the

sound appears

the volume

the

with

to

ON and

than when

to

ON, the

and

control

when

you

which

(OFF)

position

by the function

the volume

appears to

of the

to

the left

to be louder

of

the left control

sA-Ci1cl

the

volume

the bass

ear finds the volume to

compensate for

bass

and treble

the

sound takes

is

turned

down.

monitoring

have

connected

a recording.

when tistening

selector.

of the left

be louder

right

channel

and

adjust.

on the left, channel to

is higher.

the right

control

and

it harder

is high.

on

a tape

to

and

on the

is

and

r

t-

powen

@

When

the

indicating

tNDtcAToR

power

switch

the

amplif

ier is

is

set to

turned

ON

on.

this lamp

lights

up,

DISASSEMBLY

3.

Bonnet Case

Remove the

Front Panel

Remove

the four screws

four

screws

Front

o. e.

panel

Bottom

Plate

Remove the six screws

\o..oo/o'

Bonnet

case

O.

4. PARTS

PanelView

Front

LOCATION

m

(t

.J!g!r.-

o

The the importance of fore,

designation.

marh

!i,

when

on some component

found

the safety

replacing, be sure

factor

use

to

parts

indicates

part.

of the

parts

Knob

AAB.223

Lever knob (LOUDNESS,

AAD.2OO

There'

identical

of

(BALANCEI

TAPE

2)

6

siA-610

Front

View with Front

Variable resistor

ACT-127

ide rota ry

sl

(BASS.

r*i t"tr

(SPEAKERS)

ASE-oo3

-------]-=---.'

Panel

TREBLE)

Removed

I "

,,

|

Fluorescent AAV-O06

:

'!'tlr

'

ll

I

'l

o

L:---Variable

€

"

tu

indicator

rotary

Slide (FUNCTION)

ASX-I

13

(VOLUME)

resistor

tube

switch

I

Lever

I

ASK.520

Headphones AKN-023

Lever

f

switch

ASK-1 71

Top View

(POWER]

switch

.jack

(SUBSONIC,

with

TONE)

Bonnet

Variable

ACT-130

-Lever

ASK.172

Lever switch ( LOUDN

ASK-171

Removed

resistor

switch

(

BA LANCE)

(TAPE

ESS)

2)

rl|r

j

Power ATT-667

transformer

AF

amplifier

GWK.144

assembly

t-

t

Switch assembly GWS-215

Headphones GWX460

Tone GWG-138

Rear Panel

Terminal AK8.064

Terminal AKB-063

assembly

control assembly

View

{INPUT)

(TAPE

1)

Switch assembly GWS-216

Volume assembly GWX459

1i

Terminal AKE-051

(SPEAKERS)

AC

socker

I

AKP.O32

Power

code

ADG-023

Strein reliel

AEC-327