Pioneer SG-530 Service manual

()rqoNEER'

GRAPHIC

EOUALIZER

siGIIE'3c|

MODEL SG.53O COMES

Type

KU

R

R/G 110V - 120V and 22OV

WE WB

WP

This

service manual is applicable

please

120V only U.S.A. model

10V - 1

see

1

220V

220V 220V

page

2OV and 22OV - 240V

-240V

15.

IN

VERSIONS DISTINGUISHED AS FOLLOWS:

SIX

Voltage

-

24OV

(Switchable) (Switchable)

to the

KU

type.

General export model

U.S. Military model

Europe model

United Kingdom model

Australia model

When repairing the R, R/G, WE, WB and

Remarks

ORDER ARP

WP

NO.

-125,-O

types,

CONTENTS

FRONT PANEL

1.

SPECIFICATIONS

2.

BLOCK

3.

4.

CIRCUIT PARTS LOCATION

5. PARTS

6.

PICINEEFI

PICINEEFI PIONEEFI ELECTFIGINIC PfONEEFf

DIAGRAM

DESCRIPTIONS

LIST

ELECTFIONICS

ELECTFIONICS AIJEITFIALIA FTY. LTE,. 178-184 Eloundany Fload, Elnaeside, Victonia 3195, Austnalia

FACILITIES

.

ELECTFICINIC GCIFIPCIFIATICIN

. .

[UEiAl

[EtJFIclFE]

lNC. 1925

N.V.

2 3 3 4 5 7

Dominguez St.,

E.

Luithagen-Haven 9,

P.C.BOARDS

7. SCHEMATIC DIAGRAM

8.

EXPLODED

9.

I0.PACKfNG 11 FOR R,R/G,WE,WB

4-'l , Mesuno

Long

2O3O Antwenp, Belgiumi

1-chome,

Beach, Califonnia 9OAIO U.S.A.

CONNECTION

VIEW

Mesuno-ku,

DIAGRAM

.. 11

......14

WP

AND

FGO MAY 1982

TYPES 15

Tokyo'153,

Japan

Printed in

. . .. .

9

13

JaPan

1. FRONT

PANEL

FACILITIES

POWER

INDICATOR

l:-l

;:E=E=E-E=E=E=E=,=E=E=H=E=E=E=E=

t-"

"

'-''-''-''|-l

-t

6

fnt

_l

l||lL.:

rsr

powen

O

Depress this switch to turn cause this switch is

power

the mary

winding even when

the

STAND-BY

from

cord

be used for

to

OCTAVE CONTROLS

@

Move

these controls

tion

to boost or attenuate bands by up seven frequency 400H2,

l0

8

66

!4

w2

(.n

zo

swrrcH

transformer,

the wall

to

1k{z, 2.4kHz,

uuuu-u-u-u-'"-Urli-ll-Ll-Url-Li-':

I )POWER

connected to the secondary

(

t] ) position.

socket when the

long

a

time.

above or below the

110d8

bands are centered

150H2 4O0Hz 1k{z2.4kHz 6kHz

?z

!'+

t6

6

10

r00

Octave

OCTAVE

2)

CONTROLS

l-l l-l l-l l-l l-l l-l l-:-1 lrl l-l l-l l-l l-ll-l l-:

t_t t-t t-

l-l l-l l-l l-

l_l l_l l_l l_l l-l l=l l_ i_'

SWITCH

power

on to the

power

is

still supplied to the

power

the

the corresponding frequency

as shown

6kHz and 1 SkHz.

FREOUENCY lN

control

switch is returned

Always unplug

SG-530

in

the

k

1

variation curves

SG-530.

is

(zero)

center

figure

below. The

at 60H2,

lok

(Hz)

winding of

the

not

150H2,

l-l l-l l-l l-l l-l l-l l-

"-l

r-r r-r r-r r-r r-r r-,

(3)

ADAPTOR/TAPE

ON/OFF SWITCH

RoaproR/TAPE

@

Be-

pri-

to

power

going

posi-

Depress this nected to the tion, ters the from equalizer.

EoUALIZER

@

o

Press the right-hand for EOUALIZER signals OUTPUT

o

Press both been compensated nals are then OUTPUT

teminals.

The

r@

terminals.

pushed

is ADAPTOR/TAPE the OUTPUT

second tape

a such connected,

rook

tions

,-

switch when

rear

the signal

only

equalizer. In the OFF

EOUALIZER INPUT

the

frequency response

the

INPUT(E)

are then

(F*ll

terminals

switches

(F.;nl

lsr.ntinsls and

source signals

same

terminals

as a mic

as a tape monitor switch.

as the signals

When the

to the ON

(rill)

deck or connecting

mixing amplifier.

front

the

.- - _---- llr:::-

lElEl

IT"

t-

=

I

"

-

|

il:

j,,

:

r*t

(rr*$

t*"*"^'*"'"

I

(4)EOUALIZER

oN/oFF swtrcH

listening to the tape

panel

TAPE terminals.

from

SWITCH

EOUALIZER switch

made available

when recording signals

by the SG-530.

made available

are output at

front

@

terminals. Use

panel's

TAPE PLAY terminals

the

position,

terminals

of the signals

terminals.

from

as the output signals.

from the

ADAPTOR/TAPE

the ADAPTOR/TAPE

entering

panel's

position,

terminals

ADAPTOR/TAPE

the signals

are

an adaptor

When a tape

ADAPTOR/TAPE

CH

SWI

deck

In the ON

only the

to compensate

The compensated

the

The

compensated

the

INPUT

made available

when connecting

this

signal

enters

entering the

EOUALIZER

which

EOUALIZER

lE) switch

entering the

component

has been

deck

switch

con-

posi-

en-

the

have

sig-

@

at

func

2

2.

SPECIFICATIONS

Graphic

Equalizer

Equalizer Range (lndividual

Total

(1kHz,

Gain

Max.

(1kHz,

Frequency Signal-to-Noise

(lHF

channel

60H2,

Harmonic

All

Control; Flat,

(Control:

Output

Voltage

T.H.D.:

Response

A

Network,

150H2,

Distortion

Flat)

O.O1Vo, Rg:

Ratio

Inputlmpedance

Output lmpedance

BLOCK

3.

LCH

rN

[-

EQUALIZER/REC

IEQ

I

orrtA-

Section

ad.iust)

400H2

ikHz,2.4kHz,6kHz,

,

Output:

50kQ)

short

circuited,

No

DIAGRAM

.110d8

15kHz

1V)

0.005% OdB

6V

. . 5Hz- ZOtHz+laA

1V Output)

. . l00dB

...SOkohms

more

than

600 ohms

Sl-3

6p

,,>lW

t--t

Lt

!

uil

TAPE

, I EO

Miscellaneous

PowerRequirements PowerConsumption Dimensions

Weight

Furnished

(without

Parts

16-9/16(W)

package)

420(W)

.

x 3-13/16(H)

Connectioncordwithpinplugs Operating Instructions

NOTE: Specifications without

Sl-2

Sr-r

REC

notice

52

-1 (at

and due to

0d B-

l kHz)

the design

improvements.

+1

0dB

subject

-6.5d (at

....AC120V,60H2

x

97(H) x 216(D) mm

x

8-112(D)

2.8k9, 6 lb

......2

possibte

to

-26.5d8V

B-

l kHz)

modification

..10W

in.

3oz

1

f

RCH

r-tr{

EOUALI

L-

our

R€C

t_

TAPE

L

plav

REc

ZER

ON

TAPE

gff

o,N

t

___i-

EO REC

POWER

R

Chonnel

o'ru

Fn

(

Some

FOR SLIDE

KNOB LED

os L Chonnel

VOLUME

)

40OHz

SIGNAL POLE

lrHz

SIGNAL

2.4kHz SIGNAL

6kHz

SIGNAL POLE

l5kHz

SIGNAL

POLE

pOLE

NOTE: Push-button

switches

S1-i, S1-2 and

S1-3

are

locked

independently.

5

4.

CIRCUIT

DESCRIPTIONS

GRAPHIC

graphic

A

EOUALIZER

equalizer audio frequency octaves

so that the can be increased reproduced frequencies

2.4kHz,

octave

and the

adjusted

Further,

ON,

the LEDs variable quency visually. resonance an inductor connected positive

frequencies

of

60H2,

6kHz and

can be varied

left channel independently.

when

built into

resistor

response

The

equalizer

circuit in

equivalent.

to the variable

and negative

4-1.)

This

causes

circuit

act

and the resistance

as constants for feedback located before frequency not

affected by

connected to

Figure

graphic by the

point

equalizer

dotted line,

A is equivalent resistance sonant

frequency inductance circuit by

SG-530, resonance AMP,

and each frequency independently. octave resistor

is boosted

is moved feedback it

is reduced

the impedance

circuit. Further,

and after the

response

the impedance

the

4-1

shows

connected

and

capacitance of

varying

7 equalizer

frequencies

The frequency

input

side) of

when the

side.

POWER SUPPLY

As

is

shown in Figure

-

and supply

in

set with

11.5 V) of the

the knob

stable

are supplied by

graphic

of each

current by

SECTION

band

is a device

into

which divides the

several

level of each

or reduced.

The

into 7 octaves

150H2,

15kHz. The

throughout

a range

and the right channel

the equalizer

switch

the level

knobs)

of each octave

light

to

to be determined

element

which the

active element

This resonance

resistor

input terminals.

of the resonance

of

the variable

the input

buffer

EQ

of the equalizer

of

SG-530.

the equivalent

section. In

the circuit

the area

on the

to an inductance

in

series. Any required

can be obtained

the

CI, C2,

R3

and R4. With

elements

are included

segment can be

response

when

toward

the slider

the minus

EQ

AMP ICl;

slider is

moved to the

CIRCU!T

4-2, two voltage

the regulated

equalizer

section. The LED

sliding resistor is

so the

Q23,

segments

individual

called

octave

SG-530 divides

with

center

OOHz,

level of

of

1kHz,

110

each

dB,

can be

(EQ

SW)

controls

(sliding

allow the fre-

is an LC

series

circuit is

linking

(See

the

Figure

resistor

circuit

AMP

and the

amplifiers

so that the

element

are are

audio equipment

circuit for

the

surrounded

side of

Q1

and

re-

by

changing

the

series resonance

the

with

different

in

one

EQ

adjusted

of each

of the variable

side

(the

input

conversely,

plus

(+11

power

supplied

light emitted

to

load on

LED current

goes

Q23

release

program

source

an equalized

Q18

is

ON

GND

Q23

or

REC

is

LED

by the

q2L

and obtained after when the on the goes

ON.

swlTcH

o

TAPE switch This switch

playback (or

tape

a

.

EO REC switch

is steady.

is light

full

EQ

switch

base

side,

sEcTloN

(S1-3)

selects

Turning this switch

program

source signal

Further, the

because the

rectification.

wave

is tumed

and the

LED lights when

between a

monitor) signal.

REC

(S1-1

and

on causes

be output to the

to

ON to

S1-2)

terminals.

is

o

EO

switch

This

be equalized;

to equalizing signal

(S1-1)

switch

determines

when this

circuit

is connected

whether

switch

by-passed and

is

directly to the

or not a signal

is OFF, the

the input

output ter-

is

minals.

AMP

EQ

nrrenuai'e

I

a

J

Fig.4-1 Graphicequalizer

+llV

Q23

FOR

SLIDE

VR KNOB LEO

t-?

tq l€( ta{

Iq

lt-

tl

AC

V

LII

Fig.4-2 Power

supply

circuit

4

Eo,N@l

lerav

1; l-.--.

rAPE

: |

L

REc

(t-

s2 s

EOUALIZEB

I

---Ea-E-ft-

lGil;_l @:1,_

-. ---

4.

--

OFF

ON

I

J

eo

;Pr-Av@-

TAPE

uaec

n@

@

ON

I

5. PARTS

rPLAYfd-.-

TAPF

-nec{H

s 3

--

eo rru(6-

-li

PLAY(G.l-,

r

TAPE

: I

-nEc

(9.

Eo lN6-

xl

PLAY(9

r

IAPE

^ I

q

REc

(gd

_n

TAPE PLAYBACK ROUTE

-l*@-

.l -

x

sr 2 sr

,

EouAL rzER

t.1

*

LOCATION

NO?ES: o

The safety designation.

.

For

marhs

** GENERALLY

This number, temperature,

.-.-.-.ll

I

ON

I

Oeo

-

out

ON

I

OFF

eo

rG)

I

-our

S1-1 : EOUALIZERIEO S1-2:

: TAPE

S1-3

marh

I

factor

your

**

found

of the

Parts

stoch control,

and

*

part.

MOVES

classification shall

eo rr@

PLaY@

I

TAPE

L

eE. 6.

''--

v

eo rr'r@

r-rr-rv@

TAPE

rnec

@

eo rru@

PLAv@

;

TAPE

X

L

(9

REc

on some

component

Therefore,

FASTEN

be adjusted

humidity, etc.

6)

-

6).o

-

ON

I

REC

parts

when

the

replacing,

fut

THAN

indicatec

mouing items

*

by each distributor

eo out

OUT

the importance

be sure to use

are indicated

because

it depends

parts

of the

of identical

with

the

on model

Front

Panel

panel

Front ANM.l54

Push knob A AAD.417

(FREOUENCY

knob

Slide AAD483

View

(POWER)

Function

(EOUALIZER,

AAD€24

r+-

Front ANM.l55

Function knob A

AAD456

knob

EO RECI

panel

base assembly

(ADAPTOR/TAPE)

5