Pioneer Sx-255r User manual

Other manuals for SX-255R

2

This manual suits for next models

1

Table of contents

Other Pioneer Stereo Receiver manuals

Pioneer

Pioneer HTP-2900 User manual

Pioneer

Pioneer AVH-X5850BT User manual

Pioneer

Pioneer DMH-WT38NEX User manual

Pioneer

Pioneer DMH-W2770NEX User manual

Pioneer

Pioneer Elite VSX-37TX User manual

Pioneer

Pioneer AVH-201EX User manual

Pioneer

Pioneer AVH-X390BT User manual

Pioneer

Pioneer Elite SC-25 Use and care manual

Pioneer

Pioneer XR-J1500C User manual

Pioneer

Pioneer VSX-S520 User manual

Pioneer

Pioneer AVH-Z5090BT User manual

Pioneer

Pioneer AVH P4300DVD User manual

Pioneer

Pioneer sx-d5000 User manual

Pioneer

Pioneer ELITE VSX-LX305 Manual

Pioneer

Pioneer SPH-EVO64DAB-208 User manual

Pioneer

Pioneer MVH-AV251BT User manual

Pioneer

Pioneer VSX-456 User manual

Pioneer

Pioneer Siriusxm DMH-2660NEX User manual

Pioneer

Pioneer A9 User manual

Pioneer

Pioneer AVH-1500NEX User manual

Pioneer

Pioneer AVH-1300NEX User manual

Pioneer

Pioneer AVH-W4400NEX Installation manual

Pioneer

Pioneer AVH-Z5250BT User manual

Pioneer

Pioneer Elite VSX-LX805 User manual

Popular Stereo Receiver manuals by other brands

Teac

Teac AG-680 Service manual

Kenwood

Kenwood KR-V888D instruction manual

Teac

Teac AGV1050 owner's manual

Sony

Sony STR-435 operating instructions

Marantz

Marantz CINEMA 70S owner's manual

Kenwood

Kenwood KMDX92 instruction manual

Yamaha

Yamaha RX-830 owner's manual

Denon

Denon AVR-1311 owner's manual

Denon

Denon AVR-S760H owner's manual

Denon

Denon AVR-X7200W Service manual

Sony

Sony XAV-1500 operating instructions

Radio Shack

Radio Shack DX-399 owner's manual

Sony

Sony STR-DE535 - Fm Stereo/fm-am Receiver operating instructions

Yamaha

Yamaha MusicCast TSR-5B3D owner's manual

Sony

Sony STR-DG500 - Multi Channel Av Receiver Service manual

Sherwood

Sherwood Newcastle RX-770 operating instructions

Panasonic

Panasonic AJSD955B - DVCPRO50 STUDIO DECK Brochure & specs

Sherwood

Sherwood S-2660CP operation instruction

dW)

PIONEER’

The

Art

of

Entertainment

ervice

Manual

STEREO

RECEIVER

M-255

SX-205

THIS

MANUAL

IS

APPLICABLE

TO

THE

FOLLOWING

MODEL(S)

AND

TYPE(S).

The

voltage

can

be

converted

by

Rower'Recwremeny

the

following

method.

AC120V

AC120V

AC110V/120-127V/230V/240V

With

the

voltage

selector

AC240V

CONTENTS

1.

SAFETY

INFORMATION.

...........::0cceeneeeeeeeees

2

6.

PCB

PARTS

LIST...........-ccceeceeeeeeeeaneeeeeeeeees

23

-

CHECKING

FOR

PCB

PATTERN

OF

7.

ADJUSTMENTS

.....

0...

2c

cecees

seen

neces

eerenen

sean

26

MOTHER

ASSY..........ceceecsceeceeeeeeeeesseaeeenenee

3

8.

IC

INFORMATION

............

eerie

uncDukaretiuas

aad

28

3.

EXPLODED

VIEWS,

PACKING

AND

9.

FL

INFORMATION

..........cccc

cence

eee nee

eeneee

eerie

30

PARTS

LIST...

cc

ccceseseeecseseeeceeeereeeeseeeeseees

4

10.

FOR

SX-255R/KCXJ,

YPWXJ,

SX-205/KUXJ

4,

BLOCK

DIAGRAM

...........

SeesiteT

ich

aevcs

swede!

7

AND

SDXU

uo.

ec

ee

cee

cece

eee

eee

eee

e

reece

cen

eeeeeenetes

31

5.

SCHEMATIC

AND

PCB

CONNECTION

11.

SPECIFICATIONS

.....

0...

cece

eee

ee

teen

erence

34

DIAGRAMG............ccsecesseceeteeeeeeeereeseeneeeeees

8

412.

PANEL

FACILITIES

.......

0...

ccc

eeeeeeeee

eee

neees

35

PIONEER

ELECTRONIC

CORPORATION

4-1,

Meguro

1-Chome,

Meguro-ku,

Tokyo

153,

Japan

PIONEER

ELECTRONICS

SERVICE

INC.

P.O.

Box

1760,

Long

Beach,

CA

90801-1760,

U.S.A.’

PIONEER

ELECTRONIC

[EUROPE]

N.V.

Haven

1087

Keetbergiaan

1,

9120

Meisele,

Belgium

PIONEER

ELECTRONICS

ASIACENTRE

PTE.

LTD.

501

Orchard

Road,

#10-00

Lane

Crawford

Place,

Singapore

0923

©

PIONEER

ELECTRONIC

CORPORATION

1996

O-DFG

JAN.

1996

Printed

in

Japan

SX-255R,

SX-205

1.

SAFETY

INFORMATION

This

service

manual

is

intended

for

qualified

service

technicians;

it

is

not

meant

for

the

casual

do-it-yourselfer.

Qualified

technicians

have

the

necessary

test

equipment

and

tools,

and

have

been

trained

to

properly

and

safely

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.

NOTICE

(FOR

CANADIAN

MODEL

ONLY)

Fuse

symbols

-§&—#}

(fast

operating

fuse)

and/or

-§E——%

(slow

operating

fuse)

on

PCB

indicate

that

replacement

parts

must

be

of

identical

designation.

REMARQUE

(POUR

MODELE

CANADIEN

SEULEMENT)

Les

symboles

de

fusible

-J&—

(fusible

de

type

rapide)

et/ou

-§E—

(fusible

de

type

lent)

sur

CCI

indiquent

que

les

piéces

de

remplacement

doivent

avoir

la

méme

désignation.

(FOR

USA

MODEL

ONLY)

1.

SAFETY

PRECAUTIONS

ANY

MEASUREMENTS

NOT

WITHIN

THE

LIMITS

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

60

Hz

outlet

and

turn

the

AC

power

switch

on.

Any

current

measured

must

not

exceed

0.5

mA.

-—

Leakage

F

current

Device

tester

under

test

Reading

should

not

be

above

0.5

mA

Test

ali

exposed

metal

surtaces

Also

test

with

piug

reversed

(Using

AC

adapter

plug

as

required)

+

Earth

ground

AC

Leakage

Test

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

related

characteristics.

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

voltage,

watiage

,

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

/\

on

the

schematics

and

on

the

parts

list

in

this

Service

Manual.

Z

The

use

of

a

substitute

replacement

component

whic

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

continuousiy

under

review

and

new

instructions

are

issued

from

time

to

time.

For

the

latest

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.

SX-255R,

SX-205

2.

CHECKING

FOR

PCB

PATTERN

OF

MOTHER

ASSY

1.

Remove

lower

set

screw

©

at

the

center

of

the

Chassis

and

Rear

Panel.

2.

Cut

binder

@

and

remove.

3.

Remove

the

three

screws

©

fastening

the

MOTHER

Assy,

and

the

two

screws

®

fastening

the

Radiator.

4.

Grip

the

Radiator

and

Rear

Panel,

and

lift

up

about

3

cm.

Then,

lift

up

the

MOTHER

Assy

as

shown

in

Fig.

2

so

that

it

can

be

checked.

Radiator

REG

Assy

b.—

@O

MOTHER

Assy

;

Rear

Panel

Fig.

1

Rear

Panel

SLANG,

Cree

BD

9

2

MOTHER

Assy

Fig.

2

SX-255R,

SX-205

3.

EXPLODED

VIEWS,

PACKING

AND

PARTS

LIST

NOTES

:

@

Parts

marked

by

“

NSP”

are

generally

unavailable

because

they

are

not

in

our

Master

Spare

Parts

List.

@

The

4.

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

designation.

@

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

(For

SX-255R/KUXJ)

Mark

No.

PPPS

bE

Apb>

NSP

NSP

om

WN

Re

Description

FL

Panel

Front

Panel

Transistor

(Q1)

Transistor

(Q2)

Transistor

(Q3)

Transistor

(Q4)

Power

Transformer

(T1)

AC

Power

Cord

Fuse

(6.3A,

FU1)

Fuse

(1A,

FU3)

Fuse

(1A,

FU4)

Chassis

Rear

Panel

Radiator

Foot

Binder

PCB

Support

Mica

Sheet

Strain

Relief

Binder

PCB

Mold

Name

Plate

Round

Knob

S

Round

Knob

L

Push

Button

Power

Button

Hinge

Button

A

Hinge

Button

B

Function

Button

Panel

Holder

Bonnet

Case

MOTHER

Assy

FL

AND

UCOM

Assy

SP

SW.

AND

HP.

Assy

TRANS

Assy

REG

Assy

VOL.

Assy

POWER

SW.

Assy

FM/AM

TUNER

FE

MODULE

Parts

No.

AAK7239

AMB7331

28C5200

28C5200

28A1943

28A1943

ATS7114

PDG1015

REK1085

REK1075

REK1075

ANA1228

ANC7339

ANH1458

AEC1505

ZCA-BK1

AEC1581

AEE1014

CM-22C

RNE1277

AMR2533

AAK2553

PAM1608

AAB7083

AAB7082

AAD7282

AAD2531

AAD7279

AAD7280

AAD7281

ANG7087

ANE7109

AWZ8086

AWZ8090

AWZ8096

AWZ8097

AWZ8389

AWZ8092

AWZ8094

AXQ1002

Mark

No.

NSP

NSP

NSP

NSP

46

47

48

49

50

51

52

53

54

55

56

57

58

59

60

61

62

63

64

65

66

67

68

69

Description

PRIMARY

Assy

BARRIER

Assy

Screw

(3X14)

Screw

Screw

(3X8)

Screw

Screw

Remote

Control]

Unit

(CU-SX108)

Battery

(R6P,

AA)

Loop

Antenna

FM

Antenna

Battery

Cover

Operating

Instructions

(English)

Warranty

Card

Sub

Pad

Pad

Side

(A)

Pad

Side

(B)

Packing

Case

Packing

Sheet

Parts

No.

AWZ8369

AWZ8371

ABA1194

ABA7009

ABA7019

BBZ30P200FMC

BBZ30P080FZK

BCZ30P080FZK

BPZ26P080FMC

AXD7085

VEM-013

ATB7004

ADH1017

‘AZA7123

ARB7064

ARY1051

AHAT7051

AHA7121

AHA7122

AHD7265

AHG7026

SX-255R,

SX-205

@

Exterior

NOTE

:

Screws

adjacent

to

V

mark

on

the

product

are

used

for

disassembly.

|

Except

SX-205/SDXJ

only

$X-255R/

YPWXJ

=o

oh

ey

|

52)

20

SX-255R/

YPWXJ

and

SX-205/SDXJ_

only

SX-205/SDXJ_

only

["

|

|

10

|

SX-205/KUXJ.

SDXJ

9

|

|

4k,

|

|

ee

|

SX-255R/KUXJ,

KCXJ,

|

N\

YPWXJ

only

38

'

4

52

54

_

36

a

;

27

9

Ce

@

Packing

RK

59

SX-205/KUXJ,|

Se"

>

SDXJ_only

|

By

SX-255R/YPWXJ

[35

|

PNY

&

9

ox

Inte

x

BS

:

aU

>

etal

owe

SAY

Qe

SAK)

ODS

3t

|

ee

a:

|

'

Ne

Oem

S

SECT

{

5

ed

KS

SSS.

Oa

RK

oe)

a

>

Sy

oR

SO

Pee

SANK

SUPERS

.

SIR

‘

ZS:

Te

S

.

Ma

Slits

yy

SW

SS,

\-

>

Rut

See

,

Ae

“4

y

b

1

:

i

|

t

”

Except

$X-205/SDXJ_

only

62

63

64

Except

—

$X-

205/SDXJ

57

Except

<

SX-255R/

|

SX-205/KUXJ

YPWXd

only

|

5p

[and

2

1SX~

205/

SDXJ

Except

|

peceror

fsa

Ls

7}

"7

1SX-255R/

SX-205/KUXJ.[55

>

1

eee

ley

&

52

’

\

<

SDXJ_

only

r

se

ir)

7

L-2_

<4

JYPWXJ

only

o—~

£Xy

fe

’

ee

one

—

(Pp

EN

>

SX-255R/KUXJ,

KCXJ,

YPWXJ

only

28

Except

SX-255R/YPWXJ

43

29

SX-255R,

SX-205

4.

BLOCK

DIAGRAM

;

|

5.

SCHEMATIC

AND

PCB

CONNECTION

DIAGRAMS

5.1

OVERALL

SCHEMATIC

DIAGRAM

"KU",

"KC",”

SD"

mark

means

to

use

for

"YPW"

mark

means

to

use

for

a

SX-255R/KUXJ,

KCXJU

and

SX-255R/YPWXJ

models.

|

$X-—205/KUXJ,

SDXJ

models.

e)

i

Rear

WES

Geek

te

CU

ee

ae

a

bce

ay

'

J21_DBO1SNBO

for

SD

O

2

!

:

J26

DB920EB0

'

eed

x:

6

j

\

1

J21

DBO1SNBO

for

KU,

KC

a.

(—————

a

4

J25

DB220EB0

3x

A

JS5

a

i

i

J24

0B420EB0

i

aa

=

v4

rt

io

'

i

x>D>0A

i t

Bi

Q

A

Ruse!

J23

DB815NB0

for

KU,

KC

>

¥

-

~

ai

VOLTAGE

SELECTOR

i

[|

CC)

>

Ma

=|

1

J21

DBO15NBO

for

YPW

iO

ino

I

1

VNNNN

9

1

J27

DBS20EB0

[Tt

]

mntiilid

2

1

xxx

<j

)

a)

(4)

ace

J23

DB815NB0

for

YPW

LHRH

=)

me

es

Oi

Sate

eS

sl

Ra

ma

m

tm

7

a.

f

.

ol

j2e|pes20es0

i

J22

DB115NBO

for

SD

ee

ae

05

OQe-————__-

imi

ama

-

52)

BR

RSEEDO

:

=

NS NS

iS

iD

|

3

!

=z

224

u

|

§X-20S/SDXJ

ONLY

!

A

SS

H

§

1

|

|

:

1

I

8

Sono

i

.J22r

yas

J21

aetre

j

AC120V

6OHz

he

pecvay

exued

paca

reed

ost

\

'

H

SX-255R/YPWXJ

—

\

A

'

|

AC240V

SOHz

:

ip

;

j

Live

col

FU2

SX-205/SDXU

BROWN

tect

p

toeceeeS

4

|

AC1

101

20-127/230/240V

A

ARF

ods

A

REG

ASSY

CARY

canon

enon

ements

Cs

ss

mm

2

ee

He

ot

ACG

POWER

CORD

ae

(AWZ8389)

(PDG1015:

SX-255R/KUXJ,

KCXJU

FUt

(a>

SCH-4)

so

ao

sw

is

oan

Ss

oe

an

a

ee

eR

pea

peers

(>

(ADG1159:

SX-255R/YPWXJ)

FU2

REK1061~(125V

3.15A)

AKT1024—

Oe®

$X-205/SDXJ

ONLY

(ADG1157

+

SX-205/SDXJ)

op

isi

iteinicniektneseieaiiael®

4

heme

2|

E

Fu1

REK1085—~

(125V

6&.3A)

s

seems pence

©

tae)

6

EE

ES

A

OO

RY

DS

SS

SS

SS

SR

©

AS

EY

GG

Atte

B

ore

©

oO:

5

SX-255R/KUXU,

KCXU

,

SX-205/KUXU

ONLY

:

|

pimenseg

arene

res

teste

ae

ere

I>

7]

|

rs

CN6

AEK1058~(T2,5A

L

250V)

=

D1

5A03-150-2651

’

|

\§

Fa

w

KPD10

SX-255R/YPWXJ

ONLY

|

i

-

i

ei

al

8

coon

ee

IsIo)

!

|

we

CN9

!

Bd]

Lf

KPE3

i

i

ao

MOTHER

ASSY

SP

SW.

AND

(AWZ8086

:

SX—-255R/KUXJ,

KCXU)

DYY10-300—2651

QO@ORQOOOHVO

@O@QOQQ@OOODO

Pon

creer

ner

ns

eae

meee

eg

HP.

ASSY

(AWZ8087

:

SX—255R/YPWXV)

>

(AWZ8036)

(AWZ8088

:

SX-205/KUXu)

%

(se

SCH-4)

eo)

(AWZ8089

:

SX-205/SDXu)

3

(@>SCH-3,

4)

Ss

CN4

CN5

Q

KPE1S

KPE15

.

z

©

OOGGOOGHSSHOGF-O0OHHO9HOOS9OOOOD

ool

e

.

_I

D1

SA15—400-2651

D15A15-—300-2651

r

oo

8

mums

Bc

2

La

a

Ts

to

so

3

.

°

r

acs

hd

ils

ses

sha

at

“nk

cl:

al

gece

cg»

Wi,

sa

gu

sa

i

cc

in,

Seta

igen

pa,

1

.

:

;

3

a)

&

1

:

Power

sw.

assy]

|

[va

se

|

j

}

(AWZ8034)

|

AKT1019—

AKT1019—

J3

i

(@SCH-6)

i

le

ae

ee ee

|

2

uy

o%0’%0%0

gd

o

64d

9

t

|

FR:

ya ae

CT

FL

AND

UCOM ASSY

ai

29

lt

Cs

*

(AWZ8090

:

SX-255R/KUXJ,

KCXu)

cj

|

a/A\

el.

(AWZ8091

:

SX-205/KUXJ,

SDXu)

Ej

g

.

Z

(AWZ8374

:

SX~255R/YPWX

J)

o|

5

i

|

(=>

SCH-6)

:

|

ee

:

SX-255R/KUXJ,

KCXJ,

YPWXJ

ONLY

:

fe

te

ate

ee

ee mF

eB

a

ne

ea

sd

ee

a

ed

SCH-1

7

8

OVERALL

SCHEMATIC

DIAGRAM

@NOTE

FOR

FUSE

REPLACEMENT

CAUT[ON-FOR

CONTINUED

PROTECTION

AGAINST

RISK

OF

FIRE,

REPLACE

ONLY

WITH

SAME

TYPE

AND

RATINGS

ONLY.

TRANS

ASSY

(AWZ8

097

:

SX-255R/KUXJ,

KCXJ

SX-205/KUXJ)

(AWZ8378

:

SX-255R/YPWXJ

SX-205/SDXJ)

(=>

SCH-4)

FU3

REK1075—

SX-255R/KUXd,

KCXJ

FU4

125V

1A

9

SX-205/KUXJ,

SDXJ

ONLY

pt

ae

|

FU3

SX-255R/YPWXJ

ONLY

FU4

AEK1053—

TS0OmA

L

250V

A

A,

Jt

AKT1085—

(ATS

7114!

SX-255R/K

UXJ

=

:

SX-205/KUXu)

HQGO@OOOOOOD

(ATS

7115

:SX—255R/KCXJ)

(ATS

7120

:

SX-255R/YPWX

J)

(ATS7117:SX-205/SDXv)

DYY1

2-—300-2651

OAMOOOOOOOOD

J

AKT1085—

YJGHW6—-40-35/35

O

J34

eo

|

POWER

SW.

ASSY

O

C)

(AWZ8095)

J35

Y

JGHW8—40-35/35

(mm

SCH-4)

SX-205/KUXJ,

SDXJ

ONLY

QOAHOOOOO®

J2

AKT

1

023—-

VOL.

ASSY

(AWZ8092

:SX-2S55R/KUXJ

KCXJ,

YPWXJ)

(AWZ8093

:

SX—-205/KUXJ

SDXJ)

015A12-150-2651

(e>

SCH-S)

SX-255R,

SX-205

SX-255R/YPWXd

SX-205/SDXJU

ONLY

NOTE

FOR

SCHEMATIC

DIAGRAMS

1.

When

ordering

service

parts,

be

sure

to

refer

to

“PARTS

LIST

of

EXPLODED

VIEWS”

or

"PCB

PARTS

LIST”

.

Since these

are

basic

circuits,

some

parts

of

them

or

the

values

of

some

components

may

be

changed

for

improve-

ment.

_

3.

RESISTORS:

Unit:

k:kQ,

M:MQ,

or

Q

unless

otherwise

noted.

Rated

power:

1/4W,

1/6W,

1/8W,

1/10W

unless

otherwise

noted.

Tolerance:

(F):

1%,

(G):

2%,

(K):

10%,

(M):

+20%

or

5%

un-

less

otherwise

noted.

4.

CAPACITORS:

Unit:

p:pF

or

pF

unless

otherwise

noted.

Ratings:

capacitor

(uF)

/

voltage

(V)

unless

otherwise

noted.

Rated

voltage:

50V

except

for

electolytic

capacitors.

5.

COILS:

Unit:

m:mH

or

nH

unless

otherwise

noted.

.

VOLTAGE

AND

CURRENT:

(--V]_

:

SIGNAL

voltage

at

rated

output.

VT

or

+V:

DC

voltage

(V)

at

no

input

signal

unless

otherwise

noted.

Value

in{

)

is

DC

voltage

at

rated

power.

<=

mA

or

—mA:

DC

current

at

no

input

signal

unless

otherwise

noted.

7.

OTHERS:

©

@

or

@

:

Adjusting

point.

o

<q

:

Measurement

point.

eThe

A\

mark

found

on

some

components

parts

indicates

the

im-

portance

of

the

safety

factor

of

the

parts.

Therefore,

when

re-

placing,

be

sure

to

use

parts

of

identical

designation.

8.

SCH-C)

ON

THE

SCHEMATIC

DIAGRAM:

e

SCH-O

indicates

the

drawing

number

of

the

schematic

dia-

gram.

(SCH

stands

for

schematic

diagram.)

.

SWITCHES

(Underline

indicates

switch

position):

Voltage

Selector

(SX-205/SDXJ

only)

AC110V/120—-127V/230V/240V

(TYPE

1A)

MOTHER

Assy

$401

9k/10k

(SX-205/SDXJ

only)

FL

AND

UCOM

ASSY

$826

STATION

UP

$827

STATION

DOWN

$828

CLASS

$829

MPX

MODE

$830

FREQUENCY

UP

$831

FREQUENCY

DOWN

$832

BAND

$833.

PHONO

$834

TAPE

2

$835

TAPE

1/VCR

$836

S.

BASS

S837

MEMORY

$838

CD

$839

LD/DVD

$840

TUNER

POWER

SW.

Assy

S876

POWER

STANDBY/ON

(for

SX-255R)

$401

POWER

(for

SX-205)

SP

SW.

AND

HP.

Assy

$701

SPEAKER

A

ON/OFF

$702.

SPEAKER

B

ON/OFF

SCH-1

OVERALL

SCHEMATIC

DIAGRAM

5.2

MOTHER

ASSY,

FM/AM

TUNER

FE

MODULE,

SP

SW.

AND

HP.

ASSY,

@

FM/AM

TUNER

FE

MODULE

TRANS

ASSY,

REG

ASSY

AND

POWER

SW.

ASSY

(for

SX-205)

SX-255R,

SX-205

:

‘dd:d

pa

zau

“wyO

4:4

paloU

esSiMuaYyyO

ssajuN

ASIM4aYyYIO

SSBPUN

AOG

TAN

UL

payedipuy

eaouesa{OL

X¥SG+

‘MOL/L

WYO

U!

paz

ed!pul]

syozysoeded

‘+z

Suo1s!isay

“L

PEON

LL

[owe

eee

eee

n

nn

eee

eee

e

een

en

nn

nnn

enw

ee

ne

neem

nnn

en

ene

n

enna

manner

neem

nna

n

eee

en

nnn

enn

ene

ennnnnmnennae

ecuesiecescecs

n=

5

' {

H ‘

:

'

'

'

!

0

Lane

2

H

'

ZOEMSZ

MB/L

Ee

a

4

H

s|_—

7010

AT

ale

i

H

.

agg

cle

‘

1

Jo

ws

fu

H

'

HO

4g

eR

Sy

:

’

6

ul

H

ODA

i

'

£010

'

3SO

H

dWV

Y3dd5dNg:

4010

'

9

‘

g

area

ee

r

@|

OSV

[

N

QNO

:

:

z

&ZZZ9SZ

eerie

=

aes)

lols

'

Lino

ay

290

aly

i

Z010

9899

naan

'

'

dWV

XIW

dAV

Ad

H

4

)

Bartels

%

[znos]!

(ZOOLOXV)

JINGOW

3a

YANNL

WV

/WG

t

a

8

t.....---

ipa

as

ei

wubocctcenenateaececcee

lcs.

eee

w

enn

m

ee

omeneanen

ene

namaa

newness

ene

manne

cnn

meen

enneanewennanaeemenownl

“payou

asimsoy1O

ssajun

;euBis

dndul

ou

ye

yUuausNd

9Oq

:yu—>

JO

yuo

*samod

pazeu

72

abe1poa

Jaq

Sst

(

jul

anjear

JLNOY

TIWNOIS

W4:

es

:

3

euBls

Yndu!l

ou

1e

aberpoa

payou

asimuayzyO

SsajuUnN

|

! |

(A)

[OADQ

ScAou

auNaIS

tA—

so

C1

“GOW

%001

‘ZHYL

WA

38

e6er;oa

jeubis:

[AT]

LN3YND

GNV

FOVLIOA:

SLON

~s

FM/AM

TUNER

FE

MODULE

SCH-2

10

SX-255R,

SX-205

@

MOTHER

Assy

(1/2)

FM

IF

BPF

MOTHER

ASSY

(1/772)

S

'

|

O

SX-205/SDXJ

|

SX-255R/YPWX

J

|

|

(AWZ80

86

:

SX-255R/KUXd,

KCXuJ)

sen

a6s

®

as

:

‘

|

-

|

|

S1aue

ROUTE

'

wo

1.0

1.0

1.0

“

|

_

(avZ8087-Sx-255R/YPWXY)

2

lem

oA

kee,

|

129K

1.0K

|

Geral

SIGNAL

ROUTE

'

(AWZ80

88

:

SX-205/KUXu)

FM/AM

TUNER

FE

MODULE

|

96.

2M~118.

7MHz

sages.

JF

IOh

oe

ABR

eo

ces

aS

9.1K

9.1K

i

C>:FM

SIGNAL

ROUTE

=

<

31K

91K

|

(AWZ8089

:

SX-205/SDXJ)

i

3

4]

5]

6

J

7

“eS

wae

tp

ee

5

eer

eS

ee

j

=

Ee]

D

bod

5.6K

5.6K

H

=

|

c

Bho

3

o

w

3

0.012

0.01

|

aes

'

>

baer

©

<

Es

0.012

:

0.01

to

c

7

a

=

N

|

a

J

a

oy

1

a

pitas

+12V

>

GND

Gore

if

R108

V{

Vo

os

4

R166

i

|

Soe.

«220

Bok

J

STEREO

Ores

x

am

R165

|

ge

OK

SJ

TUNED

x

af

ai02

lw

28A15293

BND

O

:

|

TU.

MUTE

=

Dn

|

CA

GND

oO

4

r

=

‘

(6)

rae

(rea

ed

|

~{\

°

ote

H

Es

wT?

|

i

GND

2:

|

i

2

:

a

i

omer

x

GND

|

t—--—

v

!

"

AM

RF

AND

OSC

|

|

ry

3

981

K~2052KHz

seh

WRAL

ae

=

:

or

Ron,

©

wo

f

:

:

<

Sot

EF

&

|

980K~2150KHz

oop

ky

=

'

z

=

“@

AM

TUNE

|

dd

BN101

ae

N

{

ALA

H

AKA1016

nN

B

Z2

oRe

C191

R193

[ov

|

|

XN

EM/AM

z

_

a

x

Eng

437750,

220

OEN

ns

H

a

a

|

in

IF,

MPX

in

Lo

Q

|

i

R239

Z

8

Bz

gzZzh

52

7

S)

'

a

a}

oO

>7

5

a )

;

at

Nal

px

phat

tes

m

<bbbeh

6

6

ce

a

g

'

reo

7=5

|X

a

228298828208

Bit

oi

ars

|

r3oc

S

re

R137

©136

2

us

zé

e2eitere

ks

id

[+3-9v]X

eae

Bice

van

a

$v

5.6K

0-22

Riz6 R135

a

a=

qa

ages

Ps

ee

j

)

a

&

Lewin

[|

Te

Ole

C137.

Tea

|

10K

220

F

Oo)

oN

or

_

GND

GND

[=

;

olin

o

bs

bs

0.0

=

CBMs

=M

ys

|

etn

*F

x

t

L

im

a

x

ri

2M

KX

*O

M

.

si

m

R141

+

'

SE

5

As

ZN}

|

|S

%eno

GND

GND

3

TO

G

wn

220

|

uF

;

|

yx

eB)

Ssh

My

8

yas

é

+

"

T.eND

|

>

&

jd

‘a

pas

tx

moe

Y

&

8

O48

Me

|

aaN

alsmm

\

o

q

a

|

GND

YX]

pales

mes

min

wo

o

7o

w

s

na

7

we

tlS

in

in

w

—

-

ar

i

VG

cae

ae

ag

z

GND

ool?

8

i

gee

oi

my

&

KN101

i

—

Mal

ole

*

jw

Sepa.

D

on

prs)

YY

<4 Nv

nN

Ol6

*

i

~

|

=

ir

mi

2

ws

©

(a)

x

M

yO

&

3

O

MNES

OZ]

nn

'

fin

x|

6

Wo

=

8)

Qo

wan

i

|

21%

an

=

Mr

GND

Aone

lig

nN

5

ae

ai

GND

es)

R185

|

os

Jt}

8

47K

uw

-

ne

©

és

Ee

eee

:

at

zo

i

Helse

As

im

2

NN

2.2u

GND

GND

a

oon

E

4

on

anaoo0o2zZ2

¥RYY

GF

nN

t

ce

eas

st

ore

5

{8

a

+5.6V

aoe

S823

al

—e

sev

|

=

Noted:

|

1¢131

GND

GND

eee

2

:

DP

1.

Resistors

H

LM7001

PLL

J

LL CE

Indicated

in

ohm

1/4W,

PU(1/6W

PM)

tolerance

+5%

|

5

3

<

9

.

D

PLL

cK

h

1

d

Ki:K

ohm,

M:M

ohm

=

unless

otherwise

note

onm,

;

7.

2MHz

Qzuda

g

eee

2.

Capacitors

|

X1

31

(Spe

etapa

ws

A

Indicated

in

capacity

(uF)

“vol

tege

(V)

H

ASS1

042

ied

RF

ATT

unless

otherwise

noted

|

=

ol

i

5

poor

Min

ie

Pee

ae

eae

ees

meee

VRE

ree

IS

Indication

without

voltae

!s

50V

except

‘

OTcH

cH

|

electroiytic

capacitor

|

= =

.

H

=

=

me

:

M=CQMA~

,

TXA=CFTXA

4

a,

aun

|

i

|

6

GND

GUS

Y

|

/

|

|

7

,

!

-

L

-

SCH-3

a

a

a

a

a

i

a

a

a

ta

ene

Sons

mnt

tic

nr

os

aces

es

ae

ee

a

pen

SCH-3

MOTHER

ASSY

(1/2)

MOTHER

ASSY

(1/2)

;

12

SX-255R,

SX-205

@

MOTHER

Assy

(2/2),

SP

SW.

AND

HP.

Assy,

TRANS

Assy,

REG

Assy

and

POWER

SW.

Assy

(for

SX-205)

Fs

ROTHER

assy

(1/2)

To

VOL.

assy

J2

eT

wo

Le

oo

SN

- -

eee

om

eresttemtonrermrseenat

~~

~

c

oem

RIOT

OO

SERN

SF

CI

ok

ER

|

(=>

SC

H-3)

(=>

SCH-5)

S

eeemetil

a

am

a

a

eT

;

REE

Oy

CET

wee

Gene

—

Sched

u

:

cp

die

/~

ma

fees

ee

N

KU,

Kc,

SD

|

__YPW

=

‘

.

3 5

bees

2

MIZJ3.

38

@i|

28¢5200

|

28¢5138

.

sy

wttee

mo

!

86306242

fle

o

2@

@2|

28c5200_

|

2Sc5198

YPW"."#”

mark

means

to

use

for

Ra

R209

G

§

adaede

da

OR

Re

NIBL

os

|

28ai943

|”

281941

SX-255R/YPWXJ

models.

g

LD

O

J

iz Ae

A

|”

a

=

jo

O47]

25A1343

2SA1944

<

:

ss

Seca

oe

eeemnens

PP

came

OOOO

OOOGO

gr

a30

=1R

OA

"KU", "KC",

"SD","$"

mark

means

to

use

for

DD

ry

G)esairast

Seasr

B18

R3e1

SX~255R/KUXUJ,

KCXJ

and

R207

i

g

x

BT

|

c307

ea

a

a

243k

SX-205/KUXu,

SDXU

models.

te

PLAY

(O

“345

Jy

-

7150P7500

an

17a

es

R563

rah

8

174W

cw

|

eC

@

Le

:

Foot

greg

J

bs)

os01

BL

OTe

7174

He)

Ss

6

“g

&

REC

5

~*~

apt

2

ats

Bo

®

A

Ne

sf

= ~

es

ss

PAT

BUFFER

nit

2

n

an

:

Say

$

3-9k

)

a)

#2.

7k

B/E

ne

A

369

3A

bs

Noted:

aN.

T

¢

cS

R203

|

nn

R335

g

Ase

©

ACN-139)

t

o4

Resistors

"

©

a—f

a

Peay

(©

.

—

S

*f

Fai

|

oath

88

8

A

40%

an

BR

Indicated

in

ohm,

1/6W,

tolerance

+5%

Ya

a

8

sarias-t

|

“go

B¥O

Al

pes

25AIB43

xo

+

unless

otherwise

noted

k:k

ohm,

M:M

ohm

see

4

STS

mls

4.7

|

get

DC

DETECT

H

®

:

Non

flammable

type

(RD1/*PMF

HK)

a

a

>

R383

a‘

32

REC

(O

g

e|

8

Boh

i7aw

tt

Noe!

403

_f45.3V]

Non

flammable

quick

open

type

r

150P/500|

&

a

47

QR

Boh:

t

2.2k

3

°

x

&

males

We).

©

AK

mit

a

2ser

74

gst

|

(RFA1

/€PS¥KS)

NUM45580-D

nye

TSS

®A

c231

eyo

BOETS

,

PHONO

(Q-———*

ne

reer

©

2862705-7

31s

i)

*

|

2.Capacitors

ay

eae

©

<|*

xtze|

[e317

C318

|

indicated

in

Capacity

(uF)

/

Vol

tage

(Vv)

$34

is

2e

R349

Og)

SY

EW

CONEY

2

y

unless

otherwise

noted

p:pF

ag

yN

G

SA

*

Indication

without

voltage

is

50V

z

2

Sj

4.7

®

x

~

: :

cS

<.

174

ro:

YX:

CKCYX

TX:

CFTXA

aoe

BESS

-

Mi2S

28.

¥RIST

eo

'

M

iCQMA

TY:

CFTYA

YPW

ONLY

;

6.01

p

hae

sae

©

asp

:

Es

|

NP:

CEANP

10

i

a

Ne

pat

ki

$

R213

zs

=

T

1A

1

1

:

N38

8

Sin

FSB

OA

N

5

3s

3.Diodes

ate

=

sae

.

By

me

Bye

Other

diodes(not

noted)

are

1SS252-TP

iss

fo

<\3

on

a

)

ar

R226.

=lg

go

a

:

oer

ao

s

2

{C

asos

OA

ara

oy

x

2

H

e232

{)

“lew

la

6.

R

310

[28C2705-T

res.

A

A

xrhS

3

R224

5

5

®.

a

tt

a

Q1302

5

930

obs

&

7

Vaw

Wg

R366

pth

*

m

PHONO

(OQ———*—+i#

ge

seestres

BSS

RTS

wns]

Leermral

att

|

te

ote

b

8

H

(nf

eeteot

&

eg

[2

|

8

ian

NS

Bleach

“

a

mio

2

N

8

o

L..

wa

REC

O

a

$

a8

e

25

no’

FO

#4

2

ee

oe

RES

oe

cnn

cece

oo

eS

Q

a

R1306

R304

a

8

wi

pes

oa

SrA

R50:

:

&

4

C302

359

°

ACN-1333

A

H

EF

g

elo

vo12®

|

»

PLAY

(O

Ys

2.2750

8g

«

OLR

Bingt

~

#02

:

uPC4570c

is)

2

mvfe

A

2scsz00

:

oly

4

Co

R206

ace

aps

(OA

Fag)

&

H

O

i

aes

2

g

R352

wT

7

iy

REC

+2k

2)

47

PR

aw

or

@)

w

==

C401,

¥C402

R396

ew

©)

OA

A

<

ACH7016

|

AWZe066

190.

25A1145-T

sez!

t

a

R208

RAK

-)

9312

28C2240-T

pLay

(O

y

es

‘OA

te)

9306

2sc47931h

MOTHER

ASSY

(2/2)

|

0

.

(8X~208-KU)

eye

ACH1266

|

AWZ8087

@A

(AWZ8

086

:

SX-255R/KUXU,

KCXJ)

R210

(SX-25SRAVPW)

yal

7RU,

KG,

/SD_

1464.7

(AWZ8087

:

SX-255R/YPWXJ)

to

(O

$5

EEDEREC)

TD

GET

Fa

|

eee

a

(AWZ8088

:

SX-205/KUXJ)

KC,

T=64.1V

:SxX—

KU,

KC.

78D

164

(AWZ8089

:

SX—205/SDXuJ)

!

R212

é

cp

330

a

L

|

a

:

‘

:

SS

eee

$5

bs

on

Raper

9

ne

Mremnrn

SH

nemntaT

tH

san

i

ae

1

T

TRANS.

“ASSY

{(ATS7114

:

SX-255R/KUXS

CNS

t

i

-IEGRYKUMS

KCXJ

|

oana

I

SX-205/KUXJ)

lous

"

(ANT

Se

eeeKU

c

a

fies

1

(ars7i1s:Sx-25seKexu)

H

tu.@no

[G)

'

(AWZ8378

|

SX-25

5R/YPWKu)

ips

|

|

(ats7120:sx-255R/vPwx)

+s.6v

(@t-—-_--______-___}

fgets

eon

Sk=2OS/SOWL

1]

R952

i

|

(ATS87117:

SX-205/SDXY)

.

a

'

AM

>

J36_

sx255)

205/SDXJ

ONLY

=

10

a

FM.comP

|@)

ut

=

SARE

STS

aD

POWER

TRANSFORNER

H

st

TUNED

1104

pyv12-300-2651-se

1

wei

PRIMARY

ASSY

|

cnsos

CNG

AKE7021

KPD10

*

RF

ATT

1G}-——_____—_

:

|

ew

nse

ee)

O

ANE

BEG

9

SRCZRE

RUA

KORY

poked

HOO

XoToKs}

sce

ep

meisainaasnas

i

amass

©

o*

aeeacee

6s

came

0

SERRE

3

GI

tu-mure

|©

:

:

Rerioos-|

ih

oBs-

;

os!

(anze3@1

ee

SPA

SPO

JG

ov

[]

oe

mmf

FGy-POWER+

FGI

i

[os

(ANZ8402

1

SX-255R/YPWXY)

Rah

S|

rune

04

|@-————

REG

ASSY

|

Tl

eowers

[mvt

|

neem

apeaareeana

»

SPEAKERS

DYY10-300-2651-SG

Bad

rine

Bk

ae

REGULATOR

cawzasos)

© @

\

SOSSS

TTT

DY)

une

sr

Seen

NUM7EM1

2FAS

@}-—-MO_G@

O

J25_Da220e80

fp

}

(awzeoss)

|

(AWZ8087)

|(AWZe08e)|

(AWZe089)

ACH

ont

T]

!

=

>

lol

©

T

SX-255R

s

=

a

.

<t

@ ©

ioe

paiseal

t

t

Roxy

SX-255R

SX-205

SX-205

&

STEREO

1(}

POWER

=|

oO

8

_DBS20E80

|

'

KeXS

YPWKI

KUXJ

SDXJ

‘

un

pu

ce

|__|

©

@)

oO

J27_0B820EB0

'

L7>

©

LOWER

lau

a

1

!

FU

|

REK1

085

AEK1

056

REK1085

|REK1081

{

I

ey

H

4

d

3

an

a

i

3

PLL

DA

1G

|

REG.8

lo

A

u26_pp920eB0

||

|}

O

H

125V5.3A

[TZ.54

LZ50V

1125V6.5A4

LESS

Be

'

|

pa

PLL

ck

|@}

@l-sne

la

O

O

v24_pB420€B0

|

|

H

Bue

125V3.15A

a

¢

'

O.GND

1€4)

<

FUs

AKI

doe

23

0GB16NSO

for

KU,

KC!

1

REK1075

AEK1

053

REK1075

[REK1075

alls

“

qe

aa

|

OpA-249)

ee

On

fon

-J23

DBSISNBO

for

PW

I

1

[FU3

|

25v1.0a

|recomal2sov

|125v1..04|125V1.0A

—7@ek

Fan

dlib

:

=

AmMTE

1B

E

ru__|

|

ae

SCN

tor

ak

J

|

feua4

|

REK1075

AEK1

083

pesos

REK1075

1

_

Seo

©

ay"

POREMEorcowew

At

225V1.0A_|Te00mAL250V

|125V1.0A|125V1.

0A

on

ASG1017—

1

H

a

rey

Crna

a

ee

ae

SP SW

:

|

e)

az

DBrIENBD

tor

sD!

$1

AKX-507—

i

2°

A

|

,

i

a

as

@

Ss

123

ppe2seso|

VOLTAGE

SELECTOR

|

!

S701

p

ks

3

'

si

SX-205/SDXW

ONLY!

Asai

oz6~

'

coms

KOXu,

YPWXU

8

D404

iB

L

Oa

ey

een

a

a,

R701

1

OMLY

ea

go

@NOTE

FOR

FUSE

REPLACEMENT

H

>

A

380

2W

af

i

Lnpeio

acai

ere

aa

m

e

Mi

osos

|

38

(esoreaniesieriecice

amarante

esr

tes

1

'

vA203

!

ale

Fey

Y.

PU

US

pepe

meee

t]

CAUT1ON-FOR

CONTINUED

PROTECTION

AGAINST

RISK

OF

FIRI

‘ 4

4

$3

)

é

He

+

yPOWER

SW.

ASSY

|,

REPLACE

ONLY

WITH SAME

TYPE

AND

RATINGS

ONLY

A

R702

1

sR

our

!

:

a

<8!

‘

!

|

<awzso35)

H

:

330

QW”

en7an

;

45

‘

'

See

ode

lw

ote

&

1 1

1

Pentooa—

|

5

A

Ar!

1

hua

'

SP

SW.

AND

HP.

ASSY

‘

4

=

O—-O

‘

(AWZ8036)

3406

1Z8N,

a

“785

YueHWwe—40135735

|e

Al

dh

i]

SIGNAL

ROUTE

<2

eT

oe

eevee

eeeeeam

Oo

cee

oe

came

memes

,

m

o

yon

rey

ARES

|

Vy

asee

3

©

8

BOWER

!

(>:

AM

SIGNAL

ROUTE

:

O14

oO

138

OK

Ne

2

Aas

SO

FS

Sr

YusHW8—40435/35

g

9g

!

:

:FM

SIGNAL

ROUTE

;

©

©)

1

AUDIO

SIGNAL

ROUTE

Dace

1

U35

H

>

%

7

ey

'

AERO

OETA

1

AkP1060

!

4

1

4

6

in

_—

t

SX

2O5/KUXY,

SDXY

ONLY

_

|

1

AM

TOkHz

(ff

3

i

ee

!

:

PI

a

5

:

Beery

SeBSER-YONKN

Ma

Skat

Pons

e

SX-255R/KUKJ,

KOXY

H

"ten

H

1

25C2235-T

t

H

#7401

:

‘ave

$X-205/KUXJ

i

H

W256.

1

SX=255R7KUXJ,

KEXJ

[ATTI223

|!

BETZOV

6

OHe

i

=

PWX.

{-—_____o—

i

L

'

H

CU

sxe255R/YPWKY

Larri193

|!

NEUTRAL

SX-255R/YPWXS

;

:

L

oe

se

Cl

he

ae

©

!

‘

lon

aaervyen

1

A

cuER

eORD:

AC240V

50Hz

i

ee

oe

w

x

>

w

a

ley

a

POWER

CO}

&

E

88

8

%

3

82

38

3

LSXT2SSRMKUXY,

KCXY,

YPWXY

ONLY

t

WNECoo1

ba

'tace-s07

KUXY

|

(PDG1015:

SX-Z5SR/KUXS,

KCXJ

SX-205/SDX

4

4 4

e£

Zz

0

=

1

:

i

|

acE7004

SDXU

1’

SX—205/KUXd)

AC110/120~-127/230/240V

eee

2

*

3

Fe

2

2

Isx-208/KUXU,

SOX

tabi

tearen

gsannrmec

50/60Hz

\

anos

RoR!

(ADG1

157!

SX-205/SDX¥)

SX-205/KUXJ

ONLY

To

MOTHER

ass

Y

a

/

bee

EE

EE

SS

SE

OE

ET

SF

SS

SO

MS

oe

cane

ou

cacao

cee

B

(=>

SCH-3)

\

MOTHER

ASSY

(2/2),

REG

ASSY,

To

FL

AND

UCOM

assy

SCH—4

|

tetenstearecss.

ERE

ee

|

ond

43

POWER

SW.

ASSY

(for

SX-205)

POWER

SW.

ASSY

(for

SX-205)