Pioneer Sx-2900 User manual

}

PIONEER:

|

Theé'Art

of

Entertainment

.

Service

SX-2800

Sx-1900

SX-240

MODELS

SX

—

2900,

SX

—

2800,

SX—

1900

AND

SX~

240

HAVE

FOLLOWING

VERSIONS

:

Applicable

model

Power

requirement

Export

destination

ACI

20V

only

U.S.A.

and

Canada

ACI

tov,

120-—127V,

220V,

240V

(switchable)

Aci

20V

only

Kingdom

of

Saudi:

Arabia

and

General

market

U.S.A.

and

Canada.

°

This

manual

is

applicable

to

the

SX

—

~2900/KUC,

SD,

SX

—

2800/KUC,

SX—

1e00/KUC,

sD

ay

~SX—240/KUC

types.

*

As

to

the

Sx—

-2900/SD,

SX

—2800/KUC,

SX

—

1900/KUC,

SD

and

SX—

—240/KUC

types,

‘eter

to

pages

31-

-

34.

°

As

to

the

SX—

1900/KUCXJ

type,

refer

to

applicable

service

manual.

°

Ce

manuel

pour

le

service

comprend

les

explications

de

réglage

en

francais.

*

Este

manual

de

servicio

trata

del

método

aitiete

escrito

en.

espafiol.

PIONEER

ELECTRONIC

CORPORATION

4-1,

Meguro

1-

-Chome,

Meguro-ku,

Tokyo

153,

Japan

PIONEER

ELECTRONICS

SERVICE

INC.

P.O.

Box

1760,

Long

Beach,

California

90801

U.S.A.

PIONEER

ELECTRONICS

OF

CANADA,

INC...

505

Cochrane

Drive,

Markham,

Ontario

L3R

8E3

Canada

PIONEER

ELECTRONIC

[EUROPE]

N.V.

Keetbergiaan

1,

2740

Beveren,

Belgium

_

.

;

PIONEER

ELECTRONICS

AUSTRALIA

PTY.

LTD.

178-184

Boundary

Road,

Braeside,

Victoria

3195,

Australia

TEL:

[03].580-9911

©

PIONEER

ELECTRONIC

CORPORATION

1990

YI

NOV.

1990

Printed

in

japan.

CONTENTS

4.

SAFETY

INFORMATION

creer

2

6.

REGLAGE

covrccec

reece

terrence

teen

nee

e

nee

e

ens

27

2.

EXPLODED

VIEWS,

PACKING

AND

GB.

AJUSTE

cocccecctr

eter

eet

e

rete

eee

ne

nee

ne

nena

eee

eeees

29

PARTS

LIST

cccccccecret

eect

nt

nee

nese

nes

3

7.

FOR

SX-—2900/SD,

SX—2800/KUC,

3.

SCHEMATIC

DIAGRAM

«verre

7

SX—1900/KUC,

SD

AND

SX—240/KUC

4.

P.C.BOARDS

CONNECTION

DIAGRAM::::-°:::

12

TYPES

cr

eccr

ects

tree

eee

en

eee

en

tener

sense

ec en

ene

eeee

renee

31

5.

P.C.B’s

PARTS

LIST

rc

21

8.

PANEL

FACILITIES

<-cecceceecerere

reece

ee

er

eens

35

6G.

ADJUSTMENTS

cocci

25

Q.

SPECIFICATIONS

ec

rerercrceeecc

cette

cee

rete

ee

ees

38

This

service

manual

is

intended

for

qualified

service

technicians;

it

is

not

meant

for

the

casual

do-it-yourselfer.

Qualified

technicians

have

the

neces-

sary

test

equipment

and

tools,

and

have

been

trained

to

properly

and

satay

repair

complex

products

such

as

those

covered

by

this

manual.

Improperly

performed

repairs

can

adversely

affect

the

safety

and

reliability

of

the

product

and

may

void

the

warranty.

If

you

are

not

qualified

to

perform

the

repair

of

this

product

properly

and

safely,

you

should

not

risk

trying

to

do

so

and

refer

the

repair

to

a

qualified

service

technician.

WARNING

Lead

in

solder

used

in

this

product

is

listed

by

the

California

Health

and

Welfare

agency

as

a

known

reproductive

toxicant

which

may

cause

birth

defects

or

other

reproductive

harm

(California

Health

&

Safety

Code,

Section

25249.5).

When

servicing

or

handling

circuit

boards

and

other

components

which

contain

lead

in

solder,

avoid

unprotected

skin

contact

with

the

solder.

Also,

when

soldering

do

not

inhale

any

smoke

or

fumes

produced.

1.

SAFETY

INFORMATION

(FOR

USA

MODEL

ONLY)

1.SAFETY

PRECAUTIONS

The

following

check

should

be

performed

for

the

continued

protection

of

the

customer

and

service

technician.

LEAKAGE

CURRENT

CHECK

Measure

leakage

current

to

a

known

earth

ground

(water

pipe,

conduit,

etc.)

by

connecting

a

leakage

current

tester

such

as

Simpson

Model 229-2

or

equivalent

between

the

earth

ground

and

all

exposed

metal

parts

of

the

appliance

(input/output

terminals,

screwheads,

metal

overlays,

control

shaft,

etc.).

Plug

the

AC

line

cord

of

the

appliance

directly

into

a

120V

AC

60Hz

outlet

and

turn

the

AC

power

switch

on.

Any

current

measured

must

not

exceed

0.5mA.

Reading

should

teskege

not

be

above

Device

0.5mA

under

Test

all

exposed

metal

surfaces

2-wire

cord

Also

test

with

plug

reversed

(Using

AC

adapter

plug

as

required)

+

Earth

ground

AC

Leakage

Test

ANY

MEASUREMENTS

NOT

WITHIN

THE

LIMITS

OUTLINED

ABOVE

ARE

INDICATIVE

OF

A

PO-

TENTIAL

SHOCK

HAZARD

AND

MUST

BE

COR-

RECTED

BEFORE

RETURNING

THE

APPLIANCE

TO

THE

CUSTOMER.

2.PRODUCT

SAFETY

NOTICE

Many

electrical

and

mechanical

parts

in

the

appli-

ance

have

special

safety

These

are

often

not

evident

from

visual

inspection

nor

the

protection

afforded

by

them

necessarily

can

be

ob-

tained

by

using

replacement

components

rated

for

vol-

tage,

wattage,

etc.

Replacement

parts

which

have

these

special

safety

characteristics

are

identified

in

this

Service

Manual.

Electrical

components

having

such

features

are

identified

by

marking

with

a

A

on

the

schematics

and

on

the

parts

list

in

this

Service

Manual.

The

use

of

a

substitute

replacement

component

which

dose

not

have

the

same

safety

characteristics

as

the

PIONEER

recommended

replacement

one,

shown

in

'

the

parts

list

in

this

Service

Manual,

may

create

shock,

fire,

or

other

hazards.

Product

Safety

is

continuously

under

review

and

new

instructions

are

issued

from

time

to

time.

For

the

fatest

information,

always

consult

the

current

PIONEER

Service

Manual.

A

subscription

to,

or

ad-

ditional

copies

of,

PIONEER

Service

Manual

may

be

obtained

at

a

nominal

charge

from

PIONEER.

2.

EXPLODED

VIEWS,

PACKING

AND

PARTS

LIST

NOTES:

©

Parts

without

part

number

cannot

be

supplied.

A

©

The

A

mark

found

on

some

component

parts

indicates

the

importance

of

the

safety

factor

of

the

part.

Therefore,

when

replacing,

be

sure

to

use

parts

of

identical

designa-

tion.

©

Parts

marked

by

“®”

are

not

always

kept

in

stock.

Their

delivery

time

may

be

longer

than

usual

or

they

may

be

unavailable.

Parts

list

of

Exterior

and

packing

na

Mark

No.

Description

Parts

No.

Mark

No.

Description

Parts

No.

1

ROTARY

KNOB

(BALANCE)

AAB1133

41

HEAT

SINK

2

MASTER

VOL

ASSY

AAB1207

42

OPERATING

INSTRUCTIONS

ARB1286

(VOLUME)

(English)

3

TACT

KNOB

(RETURN)

AAD1398

43

TRANS

ASSEMBLY

4

KNOB

(POWER)

AAD1661

:

44.

REMOTE

CONTROL

UNIT

AXD1186

5

SPEAKER

KNOB

(SPEAKERS)

AAD1662

(CU—SX021)

45

SCREW

BBT30P060FZK

B

6

TUNER

FUNCTION

KNOB

AAD1663

:

OT

GR

OES

“

paren

46

SCREW

BPZ26P080FMC

8

10

ACRYLIC

PANEL

;

AAK2092

.

49

NAME

PLATE

11.

STATION

SASH

AAP1111

50

SCREW

PMZ30P060FCU

.

12.

EQUALIZER

SASH

—

AAP1112

©

13

COMPLEX

ASSEMBLY

AWZ3267

oF

Re

NZS

eOE

EY

ae

©

14

CONTROL

ASSEMBLY

AWZ3268

52

CERAMIC

CAPACITOR

(C3)

CKDYF102Z50

15

SP

SWITCH

ASSEMBLY

A

53

FUSE

(4A/125V,

FU1)

AEK—100

A

54

FUSE

(1.25A/125V,

FU3)

AEK—120

16

SCREW

ABA-298

J,

55—-FUSE

(1.25A/125V,

FU4)

AEK~—

120

een

revere

56

LOOP

ANTENNA

ATB1005

19

SCREW

ABA1082

AN

57

TRANSISTOR

(Q1)

2SC3181N

20

WASHER

ABF1017

‘\

58

~—s

TRANSISTOR

(Q2)

2SC3181N

A

59

TRANSISTOR

(Q3)

2SA1264N

21

COIL

SPRING

ABH1064

A,

60_~—s

TRANSISTOR

(Q4)

2SA1264N

C

A

22

AC

POWER

CORD

ADG1057

23.

FM

ANTENNA

ADH1004

61

RESISTOR

(7500/10W,

R1)

ACN1083

24

PCB

SUPPORT

A

62

POWER

TRANSFORMER

(T1)

ATS1248

25

PCB

SUPPORT

63.

BATTERY

COVER

PZN1001

64

PVC

SHEET

AED1117

26

PCB

SUPPORT

27.

+=PVC

PLATE

28

SHEET

AEE1014

29

CLAMPER

—

30

“AAA”

DRY

SELL

31

STYROL

PROTECTOR

AHA1015

32

PACKING

CASE

AHD1985

33.

PACKING

SHEET

AHG1016

34.

TERMINAL

SCREW

35

FRONT PANEL

AMB1753

36

INSULATOR

ASSY

AMR2140

D

37

CHASSIS

38

REAR

PANEL

39

BONNET

CASE

ANE1215

40

PCB

INDICATOR

HOLDER

.

SCHEMATIC

DIAGRAM

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‘SK-

2900/KUC,SD

‘SK-1900/KUC,SD

R528

e582

TAPE

2

‘SH-2900/KUC

SI-240/KUC

4

___|

|

9513,

0514

:

RSt1,

R512:

L

CURRENT

MIRROR

LOAD

RESISTOR

-

ee

—_——

————

—_———————__

‘s

—_—_—

<

-

- -

-

“

-

Zz

ES

©

2

1

2 3

4

5

|

6 7

v3

"UNER

MUTE

STEREO

UNC

STROBE

cE

D.GND

R345,

Q311~,0320,

IC311

GRAPHIC

EQUALIZER

CIRCUIT

O

i

ch,

O

sno

|S

Lento]

er]

Ler{o]

awlot

Io

R

ch

>}

ity

itty

re

i

_—

--|

7

!

in

a

:

W700

O99

i

a

!

1

\

09009

|

1

H

1

|

$X-2900/KUC,SD

Seek

1

SX-240/KUC

|

VR301

i

SX-

2800/40

|

100k

x2

‘SX-1900/80C,SD

1

ACTIO40

!

1

!

i

!

H

1

f

!

|

!

|

'

|

1

Test

(172)

CONTROL

ASSEMBLY

SX-2900/KUC

Sk~2900/SD

SK-2800/KUC

‘SX-1900/KUC,SD

SX-240/KUC

AWZ3268

AWZ3270

AWZ3272

AWZ3274

AWZ3268

NUM4558S-X

$X~2900,SX-2800

TYPE

750(IOW)

SX-1900,SX-240

TYPE

620(1IOW)

A\

R563.

100174W)

L561

A\

R564

10

W1/4W)

ty

D705

HZS24-2L

10

G

deft

ghijk

gers

sx-z900

7KUC,SD

|

SX-240/KUC

‘SX-2800/KUC

SX-1900

/MUC,

SD

ONLY

601

:

RESET

_

=a

L562

1H

601

2862458

Ss

602

2sc2a5e

(7

:

)

ur

c601

470/6

Ri

400k

Q603

os

2SA1048

e

©)

R6OS

100

c602

C603

4

0.01

100/16

621,

9622

:

OVER LOAD

DETECT.

D601

HZSI2AL

S

REO7

100k

cSe4

0.047

C562

RS65

R566

10

1

(vaw)

‘SX-2900/KUC,

SD

«)

0,047

10

(174)

SX-2800/KUC

ONLY

*

606

N1201

‘$X-1900/KUC,SD

Q604

:

RELAY

DRIVE

SX-240/KUC

«3

“Re10

10

|

:

{_MopEL

—

|sx-zg00/nuc,sp|sx-

1900/KUC,

50]

4

PARTS

NO.

\'SK-2800/KUC

_|SX-240/KUC

“T

RYS61

ASR

-112

{

ASR-

111

sn

eC

R608

3.3k.n(2w)

|

90N(2w)

$X-2900/K0C,S0

R610

27k

(2Ww)

|

10

1174W)

‘SX-2800/KUC

7

een

SP_SWITCH

ASSEMBLY

R715

Lc7io

}=—

th

e704

47/10

10/50

R702

R701

10k

3k

(1/4)

MSF7BM12L

+

1SRI3Z9~400

C703

1000/35,

rm

a

‘SX-2800/KUC

}900/KUC,SD_OMLY

a+

[O

att

[

a-

Io)

Pa-

[ol

Pon=

1°

[ar-

|

Tain

AR+

fo!

C]

SP-A

22.8V/8n

‘SX-2900/KUC,SD

‘SX-2800/KUC

17.9V/8N.

‘SX-1900/KUC,SD

)

SX-240/KUC

SP-B

$X-2900/KUC,SD

SX-240/KUC

ONLY

SX-1900/KUC,

SD

SN~240/KUC

ONLY

oa

eee

AEK-

120

1.25A/125V

AEK

-120

1

-25a/i25v

|

1a

‘SX-2900/KUC

,SD

SX-2B00/RUC

ONLY

Reese

ll

[einer

SX-1900/8UC

SO

SX-240/KUC

ONLY

Oo

)

SX-2900/HUC,SD

AND

SX-240/KUC

ONLY

TRANS

ASSEMBLY

vel

FL

fol

ba

Ss:

Is

Xn

on

(Ola

0

I

[acsua

ois

ft

be

TI

[pacman

[ole

te

I

FL

jo}

49?

He

C802

0.1750

#5

MODEL

|

sx-z900/KuC

|

Sk-1900/KUC

PARTS

NOY

Sk-2800/KUG

|

SI-240/KUC

T1

ATSi248

asi

|

AEK-100

AEKIOO4

pur

4A/125V

3ASA/125V

ACHt

137

ACH-

252

C701,

C702

|

esoour/63V-

|

4700uF/50V

V2kn

(2W)

roe

WrBs__[

nea

ew)

“Savon

isr7oa

|

Perouse),

SX-2900/SD

ONLY

ee

o

SX-2900/SD

OPENT

SX-1900/SD

CUT

,

|

>

~--4

x*s

A\t1

arsizsa

POWER

TRANSFORMER

Leos

11

SX-2800/KUC

SX-

1900/RUC,SD

AC

POWER

CORD

AC

120V

6GOHz

1

iz

i

sezs

yo

1

iO

1

oO

3

Icaot

2

PpG049-8

PORTE!

°

3

POAT

A

2

°

Xe

9k/10k

X1/DATA

TEST

Xo/CK

(N.C)

3

PORTB}

2

ae

meee

8

>For

nmo-

PORT

I

eee

tar

aac

acess

7

1

RETURN]

|

SX-2900/KUC,SD

|

Sk-2800.KUC

|

SK-

240/KUC

ONLY

t

g

S

9802,'0803

:

REMO-CON

RECEIVER

AXX1010,

Lo

a

ah

oh

Soren

et

ed,

No

part

number

indicates

that

the

diode

corresponds

with

HSS104-02.

l

12

SX-2800/

KUC

1900/

KUC,

SD

ONLY

@

A

o

AN

.

ie

A

BBO

UE

G

B

A

AC

POWER

CORD

AC

120V/60Hz

SX

-240/

KUC

1900/KUC,SD

ONLY

se

sagas

$X-2800/KUC

ONLY

1900/

KUC,

SD_ONLY

COMPLEX

ASSEMBLY

(AWZ3267)

Q133

Q262

O26]

0153

02

Qisi

Q552

04

Q554

0542

0541

Q553

03

Q551

Q621

Ql

Ic70l

IC131

QIO3

QI32

QI3I

ICI5I

ais2

Q522

9504

Q502

Q514

524

Q513

Q50!

G523

Q503

Q52!

Q622

Q102

Ici

Ic20l

Ic202

IC253

Q601-

Q6d6

Q75I

Qlol

Q752

1

[

2

;

1

.RESISTORS

Indicated

in

Q,1/4W,1/8W,

+5%,tolerance

unless

5

.SWITCHES

otherwise

noted

k:

kQ,

Mt:

MQ,(F):+1%,(G):+2%,

.

(K)£10%

,

(M):£20%

tolerance.

S2

VOLTAGE

SELECTOR

CONTROL

assembly

110/120-127/220/240V

S801

FREQ

UP

2

CAPACITORS

:

(SX-2900/SD,SX-1900/SD

ONLY)

Sate

FREQ

DOWN

Indicated

in

capacity(“F)/volutage(V)

unless

7

S803

2

otherwise

noted

P:PF.

Se

SSE

IUE:

SY

Tk

BRR

od

Indication

without

voltage

is

50V

except

electrolytic

(SX-2900/SD,Sx-1800/SD

ONLY)

$805

FN

A

capacitor.

S806

AM

.

S4

VOLTAGE

SELECTOR

S807

MEMORY

3

.VOLTAGE

CURRENT

220-240V/110/127V

S808

MEMORY

SCAN

[Wr

Signal

voltage

at

(65W+65W

8Q)

output

(ikHz).

(SX-2900/SD

ONLY)

S809

POP

[L__]:

DC

voltage

(V)

at

no

input

signal.

S810 ROCK

Value

in

(

)

is

DC

voltage

at

rated

pover,

SP

SWITCH

assembly

S8il

OTHER

<-nA

:

DC

current

at

no

input

signal.

S570

SPEAKER

(SP-A/SP-B)

$813

CD

ot

POWER

S814

TUNER

Sc

OTMERS

(SX-2800/KUC,SX-1900/KUC,SD

ONLY)

S815

PHONO

Tepe

role

$816

AUTO/MONO

=

@:

Adjusting

point

The

A

mark

found

on

some

components

parts

indicates

the

importance

of

the

safety

fuctor

of

the

parts.

Therefore,

when

replacing,

be

sure

to

use

parts

of

indentical

designation.

%

marked

capacitors

and

resistors

have

parts

numbers.

S817

AUTO/MANUAL

$818

DIRECT

ACCESS

S819

VCR/LINE

$820

TAPEI/DAT

$821

TAPE2/MONITOR

$822

10

$823

§

S824

8

tty

-

7

‘

1

This

is

the

basic

schematic

diagram,

but

the

actua

$825

RETURN(SX-2900/KUC,

SD,

circuit

may

vary

due

to

improvements

in

design.

SX-2800/KUC

B

SX-240/KUC

ONLY)

SCHEMATIC

DIAGRAM

$826

7

$827

6

(For

SX—2900/SD

and

SX—1900/SD

types)

ae

$829

4

fee

ae

(xe

2900/80)

$830

3

ReRcat

$831

POWER

(SX-2900/KUC,SD,

Aweanesv

SX-240/KUC

ONLY)

=

The

underline

indicates

the

switch

position.

Cc

$X-2900/SD

OPENT

R707

*&

q

SX-1900/SD

CUT

|

F

2.0m

(17ew);

tee

s

ont

8

Y

AEK~-103(SX-2900/SD)

1S.

A

2A/125V

AEK-10418%"1300/80)

|

al

&

|

x

5h

eaeaees

==

i]!

:

1

$X=2900/SD

ONLY

__

PF

Gamaee

@

Hg

4

i

BE.

RORER

CORD.

|

Ars:

£2

ao-tar

-

ATTIOI5

53

;

i

sooner:

D

po

FAs

oe

|

1

O

i

O

-

1

|g

AiNOOs

;

me

||

Dee

fed

iyi

Ti]

po

pesese,

|

g

sx-2800/50

whales

cere

cet

Ve

lads

A

nites

ne

|

ONL

S$X-2900/S0

ONLY

Ie

vg

J

‘A.

AKPIO54

11

4.

P.C.BOARDS

CONNECTION

DIAGRAM

TRANS

A

POWER

TRANSFORMER

$2

eae

VOLTAGE

(M)

a

(M)

SELECTOR

220

ic

S506

780

ONLY

|

4

AC

POWER

CORD

AC

I10/120

-

127

220/

240V

50/60Hz

COMPLEX

ASSEMBLY

(SD

TYPE)

SX-2900/SD

ONLY

iz

ee

at

oe

|

)

es:

ae

O

|.

220-240

fl

|

©

/10-127V

VOL

TAGE

SELECTOR

[a

es

ee]

12

6

|

7

I

8

I

9

i

10

I

41

I

SX

-2900/KUC,SD

240/KUC

ONLY

A

[pee

gh

eer

at

eee

POWER

TRANSFORMER

VR

ASSEMBLY

|

isl

EF

|

NOTE

1,

This

P.C.B

connection

diagram

is

viewed

from

the

parts

mounted

side.

|

2.

The

parts

which

have

been

mounted

on

the

board

can

be

replaced

with

those

shown

with

the

corresponding

wiring

symbols

listed

in

the

following

Table.

A

PCB

patern

aman

nenion]

PartName

alae

|

g

B

|

s

7

|

Radiator

type

=

d

=

sist

ae

eae

ene

ea

P.C.B.

pattern

diagram

indication

Corresponding

part

symbol

—~

0203

—

0203

co

Li

—-

|

star

a

;

|

SX-

29007

3.

The

capactor terminal

marked

with

(double

circles)

shows

negatine

termianl.

KUC

LEBEN.

+

Capacitor

4.

The

diode

terminal

marked

with

©

(double

circles)

shows

cathode

side.

|

ONLY

x

Di

oo

(Polarity)

5,

The

transistor

terminal

to

which

E

is

affixed

shows

the

emitter.

TRANS

ASSEMBLY

B

‘ER

CORD

'/60Hz

SX

-

2800/7

KUC

—_

2800/KuC

CONTROL

ASSEMBLY

(AWZ3268)

"T8007

RUE,s0

ony

1900/

KUC,

|

SD_ONLY

|

e

|

WW

Y

3

|

YY

wie

i:

|

ZY

L

fe

LA

Lh

te

LLL

LL

ere)

VP)

Be)

Se

eee

2

ear

®

lg

OS

2900/SD

OPEN

900/SD

CUT

Kies

3900

Kue,

so

O/

KUG-ONL:

VR3I1

VR312

VR313

VR3I4

VR3I5

VR302

aaa

Q802

Q803

Ic80l

Qsol

IC3It

=Q3I

Q312

Q313

Q314

§=Q315

Q316

Q317

Q318

319

Q320

IC301

16

Pioneer SX-2900 User manual

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