Pioneer SX-4 Manual de usuario

c)ProNEEr{

10.

ORDER

NO.

ARP-O15-O

COMPUTER

CONTROLLED

STEREORECEIVER

s)(-

MODEL

SX.4COMESINFOURVERSIONSDISTINGUISHEDASFOLLOWS:

r Thisservicemanualis

applicableto theKU

type.

o Forthecircuitdescription,

please

refer

to the modelSX-7

service

manual

{ARP-047-0).

r Cemanueld'instuction serefdre

aumode

der6glage,enfrangais.

o Estemanual

deserviciotratadelm6todo

deajusteescritoenespafrol.

CONTENTS

SPECIFICATIONS

RONT

PANE

L FACILITIES

PARTS

LOCATION

4. PACKING

BLOCKDIAGRAI\4

P.C.BOARDS

CONNECTIONDIAGRAM

PIoNEEFIELECTFICINICCG,F|PCTF|AI|CTN r-chome.M6su.o-ku.r

(,.a. FE N--ll aLaCtFCtNlce CC,FIPC'AATIC'N 85 Oxro.ct O.'ve. Moona.h'e, New Je.sey O2O74. u s a

PE illla tl.-CtFCtNlC IEUFC'PE, N.V. Lu'.haAe.-Haven 9.2O3o

FlCrialCF lLaCTElC'NlCa AUaIFIALIA F Y. LYo. 1 7E' I A4 Aolnda.y Rodd, B.aes'de

FHOTULY 1981

Printed

japan

SCHEMATIC

DIAGRAM

ELECTRICALPABTS

LIST.

EXPLODED

VIEW

ADJUSTMENTS

nEcuce

AJUSTE

Type Voltag€ Remarks

KU AC12OVonly U.S.A.model

sAC110V,120V,220Vand24OV

(Switchable) Generalexport model

KC AC12OVonly Canadamodel

YP AC240Vonly Australiamodel

1. SPECIFICATIONS

Amplifier

Section

ContinuousAveragePower

0utput

is 20

watts*

per

channel,min.,at 8 ohms

from

20 Hertz

to 20,000Hertzwith

no more

than

0.04%

total

harmonicdistortion.

TotalHarmonic

Distortion

(20

Hertz

to 20,000Hertz,

ohms,from

AUX/VIDEO)

continuous

rated

power

output . . No

than0.04%

watts

per

channel

power

output

. . No

than0.04%

fntermodulation

Distortion

(50

Hertz:

7,000

Hertz

4 : 1,

8ohms,

from

AUX/VIDEO)

continuousrated

power

output. . Nomore

than

0.04%

Damping

Factor

l2O

Hertz

to 20,000Hertz,

8 ohms) 50

put

(Sensitivity/l

mpedance)

PHONO ....2.5mYlb0kitohms

AUX/VIDEO

TAPE

PLAY 150mV/50

kitohms

Phono

Overload

Level

(T.H.D.

O.1"/o,

1,000H2)

PHONO 130mV

Output

(

Level/lmpedance)

TAPEREC .15OmVl2.2kitohms

Frequency

Response

PHONO

IAAEqualization)

. . . . 30Hzto 15.000H2t0.5d8

AUX/VIDEO.

TAPE

PLAY

ronr'coniro; " " 10H2to

50'000H21!

uoe

BASS. ...t8dB(100H2)

TREBLE . .18d8

(tOkHz)

'"':::'::::::':lY:

::'

*::':l:':

i?::Jil$Tl,

Hum

andNoise

(lHF,

short

circuitedA network)

PHONO 70dB

AUX/VIDEO,TAPEPLAY. ....96d8

FMTuner

Section

Usable

Sensitivity.

Mono;11..2d8f

(lHF)(1.OpV,75

ohms)

50dBOuieting

Sensitivity

Mono;

16.3dBf

.8pV,

75ohms)

Stereo;37.2dBI

(19.9pV,

75ohms)

Signal-to-NoiseRatio Mono;75dB

(at

85dBf

)

Stereo;70d8

(at

85dBf)

Distortion

(at

65dBf)

Mono. ...100H2;0.15%

1kHz;0.15%

6kHz;O.2%

Stereo ....100H2;0.3%

lkHz;0.3%

6kHz;O.4o/o

CaptureRatio. ....1.0d8

AlternateChannel

Selectivity 400kHz;

60dB

StereoSeparation ....1kH2;40d8

30Hzto 'l5kHz;

35dB

Frequency

Response 20Hz

to 15kHz

+0.5d8,

-1dB

SpuriousResponseRatio. ...65d8

lmageResponseRatio ......65d8

lFResponseRatio, ..90d8

AMSuppressionRatio .

55dB

SubcarrierProductRatio. ...40d8

SCA

Rejection

ratio . .60dB

MutingThreshold 29.3dBf

(8pV)

Antenna

Input. . 300ohms

balanced,75

ohmsunbalanced

AM Tuner

Section

Sensitivity

lHF,

ferrite

antenna . . 300pV/m

lHF,

external

antenna 15gV

Selectivity .27d8

Signal-to-Noise

Ratio .50dB

lmageResponseRatio ......40d8

lFResponseRatio. ......73d8

Antenna Built-in

ferrite

loopstick

antenna

Miscellaneous

Power

Requirements AC120V.60Hz

Power

Consumption . . .200W

(UL)

Dimensions . 420(W)

x 98(H)

x 311(D)mm

16-9/16(W)

x 3-718(H)x 12-114(Dl

Weight

(without

package) 5.2kg

1lb7 ozl

Furnished Parts

T-typeAntenna 1

DryBatterysuM-3"AA"

. ....2

Operatinglnstructions ,......1

*Measured pursuant to the federal Trade Commission's Trade

Regulation rule on Power Output Claims for Amplif ier.

NOTE:

Specifications and design subiect to possibtemodification without

notice.

SETTINGUSE

THE AM CHANNEL

STEP

SWITCH

(on

therear

panel)

Before the receiverleaves

the manufacturing

plant, this

switch is set to the channel

allotment

olan of the destina-

tion. For the U.S.A., it is set to 1OkHz.Check that the

switch

set

properly

beforeuse.

Set it to the 9kHz position when the channelallotment

plan is changed and the intervals between the AM broad-

castingstationschangefrom 1OkHz

to 9kHz units.

NOTE:

Contact your dealer and inquire if you are not sure about the

hannelalI

otment pla

THEBATTERIES

Two size

"AA" dry batteriesareprovided

accessories.

They are usedto retainthe stationpresetting

memory

functions.

Beforeusingthe

unit,disconnectthe

power

cordandload

the batteries

into the compartment

on the rear

panel

follows:

1.Slidethe

lid inthedirection

of thearrow

andopenthe

compartment

(see

Fig.

1).

Load the batteries

with the polarities

properly aligned

with the marks on the inside

of the compartment (see

Fis.2).

Align the tab of the lid with the interlockinghole and

depressthe lid lightly.

BatteryPrecautions:

lf batteries

areincorrectly

used.theymayleakor even

break open inside

the battery holder. Observe

the following

precautions

when inserting

and

replacing

the batteries.

1. Always be surethe + and - endsarealigned

properly

shownabove

and

marked

on the batteryholder.

2. Do not use

new batteries and partly used batteriesat

the same time.

3. Do not usedifferent brandsand types of batteries

at the

same

time.

niT-trn

".r.J L'orr.

10kHz

position

Fig.2

Insert

tab into

interlocking

hole

Fis.

3Fis.4

There are rechargeabledry cell batteriesand non-

rechargeabledry cellbatteries.

Always

read

the

notes

thebatteryto besurewhichkind

youhave.

When

replacingthe batteries,always

usethesametype

of batteries

(carbon

zinc)

astheonesoriginally

provided

with the receiver.

Do not use

alkalineand

nickel

cad-

miumtype

batteires.

2. FRONTPANELFACILITIES

o powen

swlrcH

Power

suppliedto theunit whenthis

switch

isdepressed

("in" position).

@ FM

STEREo

INDIcAToR

This lightswhen receiving

an FM stereo

program.

@ TU INDICATOR

This

lightswhenreceivingthe FM broadcasts.

(This

lights

whendepressedthe

FMswitch).

@ nrurNDrcAToR

ThislightswhenreceivingtheAM broadcasts.

@ FREOUENcY

scALE

This

scaleiscomposed

of 16light-emitting

diodes

(LEDs).

Duringfrequency

scanning,

the lighting

movesfrom left

to right or viceversa,

depending

on thedirection

corres-

ponding

to the TUNING SWITCHwhichhasbeende-

pressed.

rurueorNDrcAToR

This lights when the optimum tuning point hasbeen

located

duringreception.

lt blinkswhenstations

are

being

searched.

@ TUNING

switch

This is used

to tune in broadcastingstations.

Whende-

pressed,

the LEDs

on the frequency

scalelightup in the

leftward

or rightward

direction,depending

on thedirec-

tion corresponding

to the part of theTUNING

switch

whichhas

beendepressed.

and

frequency

scanningstarts.

The

TUNEDindicator

now

startsto blink.

Whena stationislocated.

the LEDs

stopmoving

andthe

TUNED

indicator

lights

up.

The soundfrom thestation

canbeheardin about

5 sec-

onds.After thatsoundhas

beenheard

for thesefew sec-

onds,

the frequency

scanning

operation

startsagain.

this way, all the broadcasting

stationsarepicked

up in

succession.

NOTE:

The sound of each station is heard for about 5 seconds but de-

press the TUNING switch if this is not the required station or if

you want to search the next station promptly.

@ FM

swrrcH

Depressthis

switch

for FMreception.

@nmswtrcH

Depress

thisswitch

for AM reception.

3. PARTSLOCATION

FrontPanel

View

Display cover

ANR454

Topcover

ANE.362

Front

panel

assembly

ANM075

Knob (POWER

)------------5

AAD.406

Knob

(BASS,TREBLE,BALANCE)

AAB.274

Front

ViewwithPanel

Removed

AEL.379

NO?'Sr

o The ! marh found on some componentpatts indicatesthe importance of the

6ofet! factor of the

part. Therefore,whenrcplscing,be

sureto u8e

ports

of identical

designation,

o For your Parts Stoch Contrcl, the faet mouing items ore indicdted uith the

marhs ** qnd *

** GENERALLY MOVES FASTER THAN ,

Thiaclossificationehollbeodiustedb! eachdietibutor becauseit depend,on model

number,temp

eroture,humidity, etc.

Knob

{TUNING)

AAD.4OO

Knob

(FMl

AAD4O2

Knob

(AMl

AAD403

Knob

(VOLUME)

AAB.273

Knob

(INPUT)

AAD.399

A r * Push

switch(POWER

ASG-521

Knob

(TAPE/ADPT.

MONO,

LOUDNESSI

AAD-405

Knob

(MEMORY/STOP)

AAD4O4

Variable

resistor

(VOLUMEI

ACT-128

I * 3{angedpush

switch

(TAPE/ADPT.

MONO,

LOUDNESS}

ASG'301

*t Tactswitch

ASG-177

Controlassembly

GWX-721

Phones

jack {PHONES}

AKN-029

Variableresistor

(

ACT-140

Variable

resistor

(TREBLE)

ACT-140

Variable resistor

ACT-o23

4. PACKING

No. Part No. De.cription

1. AHA-294

2. ARB439

3. ADHOo4

4. AHD-961

Side

pad

Operatinginstructions

T-typeFM€ntenna

Packing

case s*613

RearPanel

View

* t Slideswitch

(AM

CHANNEL

STEPI

ASH-O15

rerminal

(AM

STEREOOUTI

AKB{76

Terminel

(PHONO,

AUX/VtDEO,R

ECI

AKB-079

Terminal

(PLAYI

AKB{77

TopView

,\ ACsocker

(AC

OUTLETSI

AKP-039

Strainreliet

AEC-358

ACpower

cord

ADG.O52

Terminal

{SPEAKERS)

AKE.lOI

ti\ ** Fuse

(5A)

AEK-1OA

Power

transform€r

ATT€39

.'! *r Fuse

(3Al

AEKI

5. BLOCKDIAGRAM

FM FRONT END FM IF AMP A DETECTOR FM MPX STEREODEMODULATOR

MPx STEREo L.P,F/ AF A}AP

DECODER

IC L-ouT

300n

FMF

GNO !

IF AUP

A OETECTORIC

oerecroa

SIGNAL

IIETER

Io"

TUNING OETECTOR

3 E. X'TAL

IC P06004

R7 Voo

Rto RESET

Rtl

.' IRQ

or vurE

l,-o.0.

I osc 351

PLL SYNTHESIZERCIRCUIT

r IC M54922P t^

Illt oarr Ia

--" rN

^M/FM I'

PO G) LD

+35.6d8 ATlkHr

8CD

OECIMAL

OECOROER

FM,/Ail sELEcroR

va vs vo Yt Y2 Y3 vi

rUNER

SECTION

EQ AMP

FUNCTION

S€LECTOR

POWER

SW I

-1#orr I

f Fr tql'

lj jf

FREQUENCYDISPLAY

POWER

AMPLIFIER

IONE

CONTROL

POWER SUPPLY CIRCUIT

AUX

Vt0€O

MUTING

CONTROL

FUNCTION

SELECTOR

r*}@*

g€ oFF fcl

sw q MoD€

^ SPEAKERS

f- -o

v MoNo oN

CH -r I pxorts

-+& _=r"f

ll -j-vn

I ', --{1

LOU0f{ES

sw oFF

R.CH

AC12OV

60Hr

E6.P 1

.C.BOARDS I

CONNECTION I

DIAGRAM 3

CONTROL Ass'y(GwX-72 | )

VOLUME AssV

CONTROL Ass'y A

COMPLEX Ass'y

CONTROL Ass'y

(awx-7,7)

TC202

Qro5 o2o4 Q2r3

Q2O5

i h*l t'-o'P

g"'3'

*"""P

g*'fl

l-.:,."". rft--r-;r T

,isrlvE;:^'

r,,{*.is*|;j'* | l, *rlT,t-

',*i

i,i*,*l

1 ? \""' T ?-.-' I l.'Lt

-,s

Il"{

"-1.1:*''

\l=:;,***,,1

l,,u

I I,,,{:f

,,-,,H-i."

io*+*"

------+

I =u.1-,;rj,

q1taJ,

, \lr, t.tl, n*t ,i,#;." I T

rilj.ilF]"'ffii;riqik{i ,*lti;

';i.i,4t#ht*;tl,,q

turr'r,',:

;lihqffi,-i?#

* t

l#:ilil

i,lr:-l

I'L

ii;:i:,,fGl-i:r

p,a*

s,T,,i,'

Inwffi**"{,t'$trffift.bSTEREO OUT

Rll fir12

?2K

2,7X

lffiffiffil

ffiffiffi

0104,r05

1Sr555

' Lht ,.P .

l' y"

'9,:..r'\i '-rr .

tRe6 q

I l0/1/2r) \

fi9.:i.i. :re

i .l il2!. r:i

t lo(r?!ii,.

I cisiD03l

Q3os'

3102sc2362 llSi;i3l r..'r"'

03,3.3,4

rc5o, 3i33:i3i

il!,,*

-e'.o Q3?1.322 25A650 .- zs.o Q327'

3?8 250525P

, ' ,-'iu".o, {"'(-"5o) I i}r\,

*'1 f..,,LS,,.

H* "-d"' 1 * il.gJt,,,-

-bi" ".,,

I ii&".."-,* *1';t

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'1tf

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rxrl*5J -tsa:'l-

"'i'r

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Qe6 . ^-^ 6

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'$',1l?"#;t

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l;P Ifqi{'f'

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-t'*'i,}.i

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Q32a Q3O6 Q?O2

Q324 Q3rO O1O8

Q3rOO33OQ329 Q3?1 Q317 Qrc7Q2r5

Q314 Q313

Q3O9 Q325

Q322

Q4O4 Q4Or Q?3

Q327 Q2O6

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29.O

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