Pioneer SX-440 Service manual

PIONEER'

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INSTALLATION,

lncluding

SHOOTING

PARTS

LIST,

MOUNTING TEMPLATE,

AND

SOLID

FM-AM

OPERATING

CIRCUIT DIAGRAMS,

AND

STATE

STEREO RECEIVER

sx-44(f

CAUTION Before

carefully

below, to

o

Model

lf this unit

read and

FUSE" on back setting on

your

proper

a

SERVICE

TROUBLE

MANUAL

connecting

read and

assure the safety

SX-440

follow

and that the fuse

area

one.

the line cord to the wall socket,

follow

is set

is

used

"LINE

cover.

your

unit agrees with the line voltage in

the instructions described

your

of

for240V operation

in

a

VOLTAGE SELECTION AND

Be sure

unit.

different

that

installed in

-w

when shipped.

line-voltage area,

the line voltage

your

unit

is

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PIONI,ER ELEGTRENTtr

CURPtrRilTIOil

PIONEE.R

FEATURES

OSENSITIVE

performance

A

high

high input

OBUILT.IN

Provides

full-frequency

OAUTOMATIC

lamp

A

O

The

lights

EASY-TO.READ

clear, easy-to'read

OLOUDNESS

Preserves

musical

OINDEPENDENT

Separate bass and

OFULL

Stereo inputs

inputs

for

a tape recorder or tape deck;

OTAPE

Permits

material

making stereo

is

OSTEREO

Permits private

O

DUAL.CHANNEL

High-efficiency frequency

FM CIRCUIT

power.

MULTIPLEX

FM MULTIPLEX

automatically when

CONTOUR

balance and

treble controls

COMPLEMENT OF

provided

are

RECORDING

played.

being

HEADPHONE

listening

power

response.

OF SX-44O

is

transistor

response and a

TUNING

permits

Meter

provides

TONE CONTROLS

on the rear

OUTPUT

or monaural

through

HIGH-FIDELITY

transistors

in RF

used

CIRCUIT

good

receiver is tuned to an FM

INDICATOR

quick

CIRCUIT

full dynamic range

permit

adjustment

INPUTS

panel

plus

tape

JACK

a stereo

are employed in

headphone without

amplifier

separation between

for

SIGNAL

selection'

station

tonal

of

for record

auxiliary

recording of any

player

input

AUDIO POWER

pushpull

the

excellent sensitivity.

channels

for

INDICATOR

station

transmitting

of reproduction, even

qualities

suit room

to

with a magnetic,

for

TV sound

program

disturbing

or other

material

other

(AM,

people.

AMPLIFIER

complementary

circuit

No distortion

excellent

stereo multiplex

at very

acoustics and

ceramic, or

sound source.

FM, FM

Located

for

each audio

or

cross modulation will

stereo

effect.

signals.

low volume control

individual taste.

crystal cartridge;

stereo multiplex, or record) while the

on the front

amplifier

settings.

there

panel

channel

are also

for

easy access.

for

be caused by

full fidelity

LINE VOLTAGE

Switching

ln

order to

line

voltage selector

arrow.

plug

back

through the cut Whenar'er

check

for

either

of 1 lOV,

proper,

.REPLACING When the the fuse

Line Voltage

remove

the

Then

remove

so that

the set

the

rating

22OV

117V,

install

fuse is blown, remove

with

switch

the

proper

the

in the

edge of the

position

of the fuse. A O.S-ampere

or 240V

130V

or

the fuse

in the fuse

FUSE

OF

a new one.

fuse,

fuse

operation

operation.

SELECTION

Setting

turn

in the

plug

line

of

the

direction

from

voltage

plug.

selector

and

lf

cap.

the

Fuse

and

fuse

cap located on the

indicated by

the

unit.

marking can be seen

switch

fuse is

1-ampere

a

the rating

cap

fuse

AND

Put

the fuse

is changed,

to be used

fuse for

of the

replace

and

FUSE

an

any

is

fuse

@

-T

corN

CAP

FUSE

Take

in the direction

off

the fuse

cap by turning it with a coin,

indicated by the

arrow.

Fig. 1

PIONEE.R

15

6

1617

R MODEL SX.44O

88

FM

s

55 60

SPEAKER

AFF

s?

70

B

91

90 98

80

100 l0? t04

S0

100

g

1B

l?0

106 108

140

160 x loKHz

MHz

TAPE

MON LOUDNESS

12

11

1g

t3

FMSTEREo

VOLUME

__0_.R

L

!Hlrr.c

Fig.4

MONO l^

I

2B

21

22 23

24

25

26

27

28

29 30

3t

32

33

Fig.5

KNOBS AND

POWER SWITCH

1.

Power

is turned

off when rotated counterclockwise. Operation of this

turns

on and off the

located

2. TUNING

When

tuninq the radio receiver

station, the

this meter may deflect to the maximum.

FM STEREO

3.

When

the

4. TUNING

An AM

pointer

the

the best receiving condition,

SELECTOR

5.

The

SX-440 is set for one of the

AM

. .

MONO Reception

FM

STEREO

PHONO.

AUX

,.

PHONES

6.

plug

Cord

play

stereo

stop

emitting sound then.

Model

SE-2P, SE-20,

.

When

PIONEER's

When desiring to connect two stereo headphones,

PIONEER's

7. LOUDSPEAKER

With this sruitch When

the snritch lever is set

sounding, lt

B.

LOUDSPEAKER

I

l

B

-\

ffi

on

on the rear

INDICATOR

TUNING

SX-2140

KNOB

FM

or

broadcasting

of the

Reception

Automatically selective reception of

monaural Play

.

. . .

Connection

.

or ceramic

audio

stereo

of a

without disturbing

a lonqer

Model Model JB-22

in the

is convenient

ooa't,o*

"

.".o^r*

SWITCHES

when the s^ritch is rotated clockwise;

power

panel

KNOB

supplied

of the SX440.

(4)

to the AC

to an

is adjusted so that

INDICATOR

receivesan

TUNING INDICATOR

FM stereo

station is tuned in. While observing

SWITCH

AM broadcasts

of o{ monaural

FM broadcbsts

disk

of

record

of a record

pickup,

output of a TV receiver.

headphone is

other

For

SE-30 or SE-50 is recommended.

cord

JB-23

the stereo headphone,

is required

extension cord separately available.

"Y"

cord

ON/OFF

"ON"

position,

for

program,

I

following

FM

I

cartridge tape

inserted

people

for the stereo

separately

SWITCH

loudspeakers emit

"OFF",

to

using a

SELECTOR

nn

(LEFT] IRIGHT)

ON

OUTLET

FM

or AM

the

this

(2),

set

the

operations:

broadcasts

player

having a crystal

for

here

Loudspeakers

around.

headphone,

SWITCH

PIONEER's

headphone, use

available.

loudspeakers stop

/ A:i;?"-'"-

Vq

FRONT PANEL

turned

switch also

(3O)

broadcast

pointer

lamp lights.

knob

for

stereo

player,

enjoying

use

sound.

of

or

When

connected to

rear

connected to

9.

As this knob

counterclockwise,

flat

the rotation range.

oThis

10.

Use

CONTROL

11.

When program,

saritch to

or tape recorder,

recording

12.

For ordinary record

the

Set the

a

condition

position

loudspeakers

13.

When

is

boosted

a the

14.

The loudspeaker sound

when

it decreases when the knob is rotated

counterclockwise,

sists of two component knobs interlocked

by

both

to control the sound

and left channels simultaneously, To

adjust channel alone, hold one of the

and

convenient

The the right channel.

the s^,itch is set to the

panel

BASS

characteristic curve when the knob

channels

the SPEAKER SYSTEM

of the SX-440

the SPEAKER SYSTEM B TERMINALS.

CONTROL

is turned

attenuated. The

knob

controls

simu

the tone

ltaneously.

"A"

emit sound; when set to

clockwise,

quality

TREBLE CONTROL

of this treble control

KNOB

(9)

knob

,

is similar to that of

MODE SWITCH

playing

a disk record or tape, or receiving

keep

"MONO"

is

TAPE MONITOR

position.

"OFF"

svvitch to

tape recorder

of

when conducting disk record

LOUDNESS

switch

the

operated at a low

for

high sound volume, it is

"oFF"

VOLUME

this

friction. When

component knobs

the

volume of either right or left

turn the front knob

snritch

this

made,

such

do

not

"ON"

(or

equipment.

in the

only when

or

reproducing

play

or radio reception,

when

only

tape

deck) or

sound.

Be careful

using

SWITCH

lf

the switch is

CONTOUR

sound

When

recommended

"ON"

volume,

is set to the

easy listening.

position.

CONTROL

increases

knob is turned

other component

for balancing the sound volumes of both channels.

volume

clockwise;

This

is

the

for

knob

double

knob

is turned,

rotate together

volumes

the left channel and the rear

of

component

knob by

position,

loudspeakers

the

A TERMINALS on the

"8".

bass

is boosted, as turned

control

is designed to

to

is set

of

"STEREO"

a monaural record

a tape on which monaural

playing

monitoring the recording

play

in

the middle sf

both

right and

the

a broadcast

position.

keep

back a tape by using

set to the

or radio reception,

this respect.

Set

player

thiss^ritch

SWITCH

position

both

the equipment

to

con-

right

the other

while

bass

keep

knobs

and

theSX-440

treble

is operated at

suritch in

the

Fis.7

RIGHT

by one

hand.

knob is

those

give

left

BASS

the

in

"ON"

are

CHANNEL

hand

lt is

for

a

I

o

"o.,',o*

.

mm

Fis.

6

TERMINALS

AND

CONNECTION

ON REAR

PANEL

15. FM

An FM

terminals,

ANTENNA

broadcast

receiving

TERMINALS

antenna

16. GROUND TERMINAL

Connect SX-

17. AM

This

broadcast

NOTE:

18. AM FERRITE

An AM

When

tion

antenna

ANTENNA

19.

These

terminals

panel

volume, transistors.

accessory 2-ampere

channel; the left-hand

20. MAGNETIC

Connect

with a

the

monaural

21.

These record cartridge

audio

channel;

22. GROUND

lf the

SX-440

23.

Connect

output)

deck)

24. TAPE RECORDING

Connect

of the

these

BASS

NOTE:

ground

zl40

a

conductor to

ANTENNA

terminal

For

grounding,

NECTION AND

broadcast

using the

cah

be

without

provided

is

receiving

antenna.

the most

refer to

receiving antenna

SX44O where the f

conducted simply by

connecting an

TERMINAL

PROTECTIVE

protect

fuses

are short-circuited,

is operated

one

here

magnetic

lower

record

AUXILIARY

jacks

player

tape

output

the

transistors in the

while

or both

When

this

fuses.

side fuse

the

output cords

cartridge. The

jack,

for the

player,

are used when

equipped

player.

of a TV

jack,

lower

TERMINAL

player

record

has a

TAPE

to

these

or monitor

used

with

to

these

tape

recorder

terminals

(9)

or

For

andTApE

,,CONNECTION

or other

ground

MONITOR

jacks

terminals

the

SX-44O

jacks

(or

cannot

TREBLE

correct

connection

RECORDING

this terminal

TERMINAL

for

suitable FM

the

GROUNDING".

ANTENNA

(17).

FUSES

or the SELECTOR

the SX-440

of the fuses

occurs,

replace the blown fuses

The

right-hand side fuse

is for

PHONO

upper

right

use either one

TERMINALS

connecting

with

a crystal

Also

use these

receiver. The

for the

equipment

conductor,

TERMINALS

playback

the

of the

the recording

tape

deck). The

be

adiusted

(1Ol

controls.

OF TAPE

will be

connected to these

1

for

connecting

antenna,

article

accessory to the

ield intensity

adjusting the

external antenna

SX-440

may blown

the

TERMINALS

of a

jack

channel. When

an

AM

"ANTENNA

direction of this

.When loudspeaker

(5)

is

used at a high sound

to

right

channel.

player

record

is for

the

of the

the

output

or ceramic

jacks

for

reproducing the

jack

upper

right

channel.

2

to be

connect

used with the

it

to this terminal.

output terminals

tape recorder

TERMINALS

input

terminals

signals

with

to the

jacks,

l24l

RECORDER"

outgoing from

the VOLUME

TAPE MONITOR

refer

grounding

the

external AM

antenna and

CON-

SX-440

is high, recep-

AM

to the

front

the

on

protect power

with

equipped

the left

(or

(line

the

left

(line

tape

input)

(14),

(23)

articte

is for the

left channel;

connecting

iacks.

cords of a

cartridge, or a

for

is

to the

25.

LAPE _ BECORDTNG

NECTOR

Provided

a DIN-type

recording and

that

tape

by linking the

recording/playback

connector

is used, terminals

26&27. SPEAKER

Two speaker

they

and

Connect the

systems

terminals

can

to terminals

(27).

28 & 29. SPEAKER

When using two

(29)

for

right channel to terminals

the

(29).

NOTE: For

the

For ,,CONNECTION

AC

30.

The

interlinked with

maximum

other equ ipment

a

31. AC

An AC outlet

is not interlinked

power

OUTLET

obtained from

of

OUTLET

32. LINE VOLTAGE

(DIN

the

tape

recorder

recording/playback

playback

systems

be selectively

right

second systems.

to terminals

connection

plugs correct loudspeaker

20O

having

(and

tape recorder

cord

that

SYSTEM

A

and B

(26)

used by

loudspeaker

and

channel

SYSTEM

speaker

systems,

(28)

of loudspeakers

contained

OF

ISWITCHED)

this AC

the

operation

VA

can be supplied

connected"

(UNSWITCHED)

a capacity

with the

operation

SELECTOR

monitor)

(23)

HOLDER

This selector

voltage to be supplied.

selector setting

article

is used for

lt

and fuse

"LINE VOLTAGE

setting

also serves

replacement

SELECTTON

PLAYBACK

/

TYPE}

(or

tape

deck)

connector,

can be

with the

is separately

and

l24l are

to be

connection for

completed

SX440

available.

not

through the

When this

used,

A TERMINALS

be

can

connected

operating

the left

of the

channel

to the SX44O

the switch

firsl

loudspeaker

B TERMINALS

use these

Connect the

and those for

in the

accessory

connection,

LOUDSPEAKER

outlet

of

terminals

loudspeaker for

to

is turned

POWER

to the

2O0

VA.This

of

POWER

left

the

these terminals,

bag

must be used.

refer to the

SYSTEMS".

ON

SWTTCH

record

power

SWITCH

AND FUSE

the SX-44O to suit the line

as a fuse

procedures,

AND

holder. For the

refer to the

FUSE".

CON_

used has

simply

(8).

speaker

to

(28)

and

the

channel

article

and OFF

(1),

player

outlet

(1).

(page

,

A

or

1)

33. AC CORD

After

correctly setting

connect this

cord to

the LINE VOLTAGE

an outlet

of the

commercial

SELECTOR

power

(321,

line.

PIONEI.R

LOUDSPEAKER

CONNECTION

.

When connecting loudspeakers,

plug

from

the accessory

l€ads to the

positive

the

.

When

right channel

socket

system diagram shown in

.When

the

above, system into

left

channel

socket

plugs

of the leads

loudspeakers are

the

(26)

and the

A

terminal

two speaker

using

speaker

second

and insert

the speaker

speaker

(29).

speaker

the right channel

ANTENNA

rFM

BROADCAST

The field

mountains and buildings, and

requires to use an the area and suitable

o

when

T-type antenna to

.

strength of

FM

place

where the SX44O

antenna,

Employ

using the

station. Connect

radio

shown

type antenna.

direction of the horizontal

fix

and

"RECEPTION

nation of

When using the behind a mountain or within a ferroconcrete building, install

an FM radio

referring to the

T-type indoor antenna

the

SX-440

in Fig. 9, and expand

While actually receiving

it on a

OF

the antenna

SX-44O afar

antenna

and connect it to the

antenna is various in type, having

most suitable

sales store,

NOTE:

antenna

The installation

similar

to

instructions

purchased.

OF

extract

bag and connect the

illustrated below.

and

left channel

socket

page

positive

to the

connected

plug

the speaker

into

(27).

2 .)

systems, connect

system

into

to

B terminal

the speaker

systems

plug

speaker

CONNECTION

RECEIVING ANTENNA:

FM

broadcast

in ferroconcrete buildings.

antenna

the

wall or other

FM BROADCAST" reprding

direction.

that

accompanying the FM radio antenna

of different type depending on

following:

within a

the FM

(or

FM

by

of TV antennas.

wooden

of

end

ANTENNA

the horizontal

section

from the

FM/TV

antenna terminals

consulting a

procedure

speaker connector

speaker

Be sure to connect

plugs.

system

plug

into

the connection

to

wire

the

plugs

plug

of

socket

system B

the

as

this

(28)

terminal of

to the

(Refer

speaker

AND GROUNDING

is much attenuated

be

will

accessory

the vertical

TERMINALS

broadcast,

for

the

place.

common antenna)

3 to 7

nearby

of

For

Use the most

used.

the

to

building near

section

section of

determine the

best radio reception

Refer to

the

broadcasting station,

(15).

elements.

radio

FM

radio

details,

insert

A terminal

the

described

SX440

the article

Select

antenna is

followthe

wire

plug.

the

speaker

leads of

speaker

the

and

terminal

behind

This

FM

the

of the

(15)

the T-

determi-

outdoors

The FM

the

antenna

SYSTEMS

as

,

SPEAKER

FM T'TYPE

FM OUTDOOR ANTENNA

TERMINALS

PLUG

INDOOR ANTENNA

Fis. 9

Fig.

ER

8

rAM

BROADCAST RECEIVING

.

When

using the

inside

a wooden building, it

antenna.

ANTENNA for

ln crch an area,

SX440 near the broadcasting

set

the best radio reception

to broadcasts. Refer to the

CAST".

.

good

lf

reception cannot

ing the direction of

accessory antenna to the AM the wire along a

.

lf

lead wire antenna

Connect the ANTENNA

AM lead wire

good

reception cannot

lead-in wire of

TERMINAL

wall

be

the AM FERRITE

ANTENNA TERMINAL

of the room.

be

is used,

(17).

ANTENNA:

is

unnecessary

direction of

the

"RECEPTION

article

attained wen

antenna.

Connect one

attained

install an AM antenna

the outdoor antenna

to install

the AM

while actually

by

ANTENNA,

('17)

when the acc€ssory

even

station or

FERRITE

OF

properly

end

and expand

outdoors.

to the

AM

an

listening

BROAD-

adjust-

the

use

of

the

AM

Fig.

10