Goldstar Gsa-3040 User manual

Gold

Star

Audio

SERVICE

MANUAL

for

service

technician

Gold

Star

Co.,Ltd.

=

:

STEREO

POWER

AMPLIFIER

Slim

type

component

series

SPECIFICATIONS

This

specifications

may

be

changed

for

improvement

of

performance

without

notice.

VUE

Cs

as

2,

cies

eca

tetas

hee

alee

a

iv

ae

ee

cae

2

RMS

25W

TD:

(2060-20000

AZ)

ed

wade

Oe

ee

tweed

0.02%

Frequency

response

..........

000

eee

eens

20-20000

Hz

Signal

to

noise

ratio

.......

ee

re

eee

75dB

(NOISE!

o..5

Bo,

3.

te

ett

eee

tae

dyes

dy

Bp

Se

ees

Bw

hg

oe

0.4

mV

Power

indicator

range

.............0.0000008

0.002-50W

Input

sensitivity/impedance

MGAVACKS

iy

x.

6

al

OS

neat

aa

We

Wile

oe

Bit

he

500

mV/47kQ

DIN

SOCKEE

a:

cto

EA

ee

ab

Re

ise

ioaee

500

mV/47kQ

K@aG

MPCOGICE

yn.

aS

4!

does.

gence

aa

ee

ae

8

ohm

Seimi-COndUCIONS:.

2

ewan

ow

attend

tae

be

3IC,

4TR,

8DIODE,

24

LED

Power

consumption

..............0.

000000.

130

W

(Max.)

WEIGAG

a24.3

3

os

$a

ee

oe

ae

Vee

ere

5.2

Kg

ED

PICUIS

ONG

scsi.

hs

tts

ect

ed

os Su

eee

420(W)

x

55(H)

x

269(D)

mm

Printed

in

Korea

Apr.,

19&2

EXPLODED

VIEW

FOR

CABINET

To

service

technician

This

service

manual

contains

detailed

service

information

for

stereo

power

amplifier,

Model

GSA-3040

Illustration

of

the

model

appears

on

front

cover.

Please

give

attention

to

The

followings

are

the

safety

servicing

guidelines

for

all

audio

amplifiers

and

radio

receivers.

Service

work

should

be

performed

only

after

you

are

familiar

with

all

of

the

following

safety

guide.

To

do

otherwise

increase

the

risk

of

potential

hazards

and

injury

to

the

user.

Safety

guide

1.

~

Be

sure

that

all

components

are

positioned

in

such

a

way

to

avoid

possibility

of

adjacent

components

shorts.

This

is

especially

important

on

those

chassis

which

are

transported

to

and

from

the

repair

shop.

Always

replace

all

protective

devices

such

as

insulators

and

barriers

after

working

on

a

receiver.

Check

for

frayed

insulation

on

wires

including

the

AC

cord.

Also

check

across

the

line

conponents

for

damage

and

replace

if

necessary.

.

All

fuses

and

certain

resistors

and

capacitors

which

are

of

the

flameproof

type

must

be

replaced

with

exact

same

types

to

prevent

potential

fire

hazard.

.

After

re-assembly

of

the

set

always

perform

an

AC-leakage

test

on

the

exposed

metallic

parts

of

the

cabinet

such

as

the

knobs,

switch,

etc.

to

be

sure

the

set

is

safe

to

operate

without

danger

ofelectrical

shock.

To

order

repair

parts

Parts

orders

must

contain:

1.

Model

Number-found

on

front

cover

in

this

service

manual.

2.

Part

Number,

Description

and

Quantity.

CONTENTS

Disassembly

instructions

..

0.0.0.0...

000

en

ey

2

Power

level

adjustment

........

SS

shi

tee

Be

tay

Se

cacti

Fic

GEE

Bl

BS

aah

acon

tgs

een

hc

hee

tes

aoe

he

eae

ead

2

PO

Ck

Cl

aQ

hal)

Weg

sm

tive

Pack

hte,

&

Spc

ewce

ch

dys

SIs

Bee

wie

ak

Sats

ee

Soe

Gn

ee

ane

me

3

SCHEMALCCIAQNaNNs

3.

cecnassin

te

oto.

ots

en

ethk

&

Mum

ty

G

Sm

er

Syteis

Stach,

bead

ar

IS

eae

ates

4,5

Electrical

parts

location

and

wiring

...

2.0.0...

ee,

6,7

PVECERICAIP

OTS

ISU:

se

whoa

5.

aera

ste

peste

Beh

ponte

Sie

tide,

Soop.

ck

ot

pele

SS

op

dh

bn

Be

edn

ert

de

Docket

dette

he

ead

.,,

8,9

Exploded

view

for

cabinet

...

0.0.0.0.

00.

ee

eee

10,

11

Parts

list

for

cabinet

exploded

view

...........

00000

cbc

bb

bbe

eee

12

DISASSEMBLY

INSTRUCTIONS

1.

To

remove

top

cabinet

Remove

four

screws

€)

as

shown

in

Fig.

1.

Fig.

1

2.

To

remove

front

panel

When

replacing

parts

situated

on

the

front

panel

such

as

the

power

switch,

speaker

buttons,

etc.,

remove

six

screws

(8B)

and

©

.

(See

Fig.

2&

3)

Fig.

3

POWER

LEVEL

ADJUSTMENT

This

stereo

power

amplifier

has

been

aligned

at

the

factory

and

normally

will

not

require

further

adjust-

ment.

As

a

result,

it

is

not

recommended

that

any

attempt

is

made

to

modificate

any

circult.

If

any

Parts

are

replaced

or

if

anyone

tampers

with

the

adjustments,

realignment

may

be

necessary.

,

1

kHz

More

than

500mV

14.2V

1

kHz

AF

OSC

2

2V

se

500mV-20dBm

output

LED

level

meter

VR101(L)

VR102(R)

shou

Id

read

0.5W

LED

level

meter

IN

PUT

POWER

AMPLIFIER

>

=>

C)

OUTPUT

AC-DC

CONVERTER

WU

UM

UU

NUN

A

a

POWER

LEVEL

DISPLAY

POWER

SWITCH

POWER

TRANS

2P

SOCKET

WVYOVIG

NIO

1d

L-

INPUT

R-

INPUT

()-------+6)-----—+

SCHEMATIC

DIAGRAM

TR

I0l

TR

102

TRIOS

MPS

9434G

MPS

9630K

MPS

9630K

HEAD

PHONE

JACK

STK

-

461

ic

101

L202

RI02

|

S.P

A

|

LO

ch

S.P

B

|

TRIO4

SN

Geer

2S$1827-0

oF

|

R105

aaaG

|

IK

|

C124.

125.126.127

:

|

0.047/500V

|

C123:4700

MF-35V

rea

INAL

A

Nl

ISIBBFM-

2x2

1?

R120

Is

188F

M-2x2

|

R124

RI2

|

56k

DIOS

sek

DIO?

7

She

VRIO2

ACII6

4.7/25

VRIOI

f

ACIS

4.7/25

ioe

io

cS

GG

SPEAKER

a

4a7k>

scis

ADIO6

47

eee

DIOS

TERMINAL

B

4.7/25

eae

eee

Cem

Qe

(mam

ene

cnene

anes

comm

comme

amen

cue

cou

qupersm

ea

ome

ames

cous

ome

Q)

ee

cums

am

Game

Gomme

GED

GERED

GED

GaED CUED

eS

ereED

GoD GEE

Gu

eee

oo

ome

|

200PX4

>

=D

om

e

Pe

a,

ee

a

ee

gen

ee

tes

ey

ee

R204

56K

H—,,

SW

eisrtertedsy

tere

tort

16.8

[7.7

[92

l1o.7/7.7

[9.20

|io7Jo

THIS

SCHEMATIC

DIAGRAM

MAY

BE

CHANGED

FOR

IMPROVEMENT

OF

PERFORMANCE

WITHOUT

NOTICE.

ELECTRICAL

PARTS

LOCATION

AND

WIRING

Circuity

pattern

and

printing

may

be

made

a

little

of

difference

with

the

set

under

service.

Please

make

sure

of

them

when

servicing.

MAIN

AMP

PWB

AY

(51

1-497A)

f

secaiei

visnibioinconebtin

1

a

_

|

sqvesesi

‘

sein

| |

pcossseinssisasanamcamiansaiis

¢

ia

sain

¢

jpprcnonicasiacasttiag

Aone

singer.

|

SES

ces

S

ERE

ONES

ROSES

from

G

POWER

AMP

PWB

E

a

eS

oS

T

T8-498A

GOLD

STAR

>

suas

sia

iS

eae

SSE

ape

RRR

cme

RESO

to

R.ch

HEADPHONE

POWER

AMP

|

PWB

S.Pter.A

L.ch)

fo

2

R

ch

S.P

ter.

B

TRi02

LEVEL

METER

PWB

AY

(511-498A)

2:

a

2

7

RCA

or

DIN

JACK

es

ped

cup}

R-ch

to

RCA

or

DIN

JACK

*°

RO

L.ch

IN

to

S.P

SEL.

SW

PWB

LO

to

POWER

TRANS

2ND

to

POWER

TRANS

2ND

GND

to

HEAD

PHONE

JACK

GND

G

RI

LI

A

(=)

(+)

B

to

LEVEL

PWB

to

SP

ter.

|

GND

8

(CHEMICON

)

ELECTRICAL

PARTS

LOCATION

AND

WIRING

Circuity

pattern

and

printing

may

be

made

a

little

of

difference

with

the

set

under

service.

Please

make

sure

of

them

when

servicing.

MAIN

AMP

PWB

AY

(511-497A)

PiaRS

Si

RNR

eases!

from

G

POWER

AMP

PWB

E

GOLD

STAR

to

R.ch

a

HEADPHONE

d

JACKS

A

ey,

ese

;

S.Pter.A

4

POWER

AMP

,

|

PWB

L.ch)

fo

2

R

ch

S.P

ter.

B

fae

epee

ea

oo

!

ae

c

101

Ca

Cb

C

182

BS

a

|

RT

a

eae

LEVEL

METER

PWB

AY

(511-498A)

ELE!

es,

ise

get

Le

Sar,

Sos

geee

|"

272

2S,

7

|

xz

ee

.

7

BA

-

aon

or

DIN

JACK

RCA

or

DIN

JACK

|

GND

,

°

eno)

®t

ria

IN

Fioz

1

SOR

AD

ae

ANA

f

as

SEL.

SW

F101

FT

315A

7

PWB

ASS

ce

LO

to

POWER

TRANS

2ND

to

POWER

TRANS

|

2ND

GND

-

to

HEAD

PHONE

saa

“es

JACK

GND

-,|

LEVEL

PwB

to

S.P

ter.

A

~

oe

4

GND

5

(CHEMICON

)

MAIN

AMP

PWB

AY

(511-497A)

NO.

op

WN

=

o>)

14

15

16

17

18

19

20

21

22

SYMBOL

NO.

PART

NO.

IC101

668-134A

TR104

665-882B

0101

652-611A

D104

654-6078

D105,

106,

107

108

F101,

102,

103

104

VR

101,

102

R125

R132,

133

R113,

114,115

116

R117,

118

R123,

124

R105,

106

R107,

108,

119,

120,

121,

122

R101,

102

R109,

110

R126

R103,

104,111,

112

R127

65

1-001C

586-101A

585-116B

613-002F

56

1-009D

564-022A

RN

101501

RS102K07

RSR47J01

RD4R7J09

RD562J09

RD621J09

RD102J09

RD822J02

RD332J09

RD472J09

RD333J09

RD2I227IN9

ELECTRICAL

PARTS

LIST

DESCRIPTION

IC

STK-463

(AUDIO)

TRANSISTOR

SANKEN

28C1827-0

DIODE

RECT

KBRC604G,

1}

DIODE,

ZENER,

ZPD-13,

ITT

DIODE

DETECT

18188FM-2

FUSE

HOLDER

KS

CLIP

TYPE

5x20

FUSE

5x20

SEMKO

250V

3.15A

SLO

VR,SEMI-FIXED

SR19R-10KB

10D

CONNECTOR

MALE,

4PIN

PLUG

AY,

12

PIN.

R,METAL

FILM

100-J1/2WP

R,METAL,

OXIDE

1K—K

2WP

R,

METAL

OXIDE

0.47-J1/2WP

,

CARBON

FILM

4.7-51/4WM

»

CARBON

FILM

5.6KJ1/4WM

,

CARBON

FILM

620

5%

1/4W

,CARBON

FILM

1K-J1/4WM

ss

ee”

0

ee

5

eee

8

CARBON

FILM

8.2K

J1/4WR

/CARBON

FILM

3.3K-J1/4WM

,

CARBON

FILM

4.7K-J1/4WM

_CARBON

FILM

33K.J1/4WM

0

ee

eee

Yee

2

R.

CARBON

FILM

2.9K

11/A\WIM

SYMBOL

NO.

PART

NO.

R130

R129,

131

C109,

110

C103,

104,

130

Citi,

C124,

127

C115,

118

C105,

C107,

C101,

102

C113,

114,

C119,

122

C123

Ci21

FOR

POWER

IC

FOR

REGULATOR

TR101

RD124J09

RD154J09

CCO80D06

CC471J501

112

125,

CK473Z202

CO

104501

126,

116,117,

CE475D01

~CE107D01

CE476E01

CE

105F

01

CE106F01

CE107F01

CE478E12

CE227B01

255-073B

25-610A

106

108

662-0254

TR102,

103

662-024F

D102,

103

652-005A

C201,

202

639-602H

C131,.132,

133,

CC201501

134

636-403A

DESCRIPTION

,

CARBON

FILM

120KJ1/4WM

,CARBON

FILM

150KJ41/4WM

,

CERAMIC

CC

8PF-D

CH

50V

,CERAMIC

CC

470PF-J

SL

50V

O°):

De

O

»CERAMIC

CKO0.047MF-Z

50V

C,

POLYESTER

0.1MF-J

50V

O

»,ELECTROLYTIC

4.7MF

25V

»~ELECTROLYTIC

100MF

25V

»ELECTROLYTIC

47MF

35V

»,ELECTROLYTIC

IMF

50V

»,ELECTROLYTIC

10MF

50V

»,ELECTROLYTIC

100MF

50V

,ELECTROLYTIC

4700MF-35V

»ELECTROLYTIC

220MF

10V

PLATE

HEAT

SINK

(A)

PLATE,

HEAT

SINK

(B)

Cy

€)

030)

O07)

TRANSISTOR

,

MOTOROLA,

MPS9434G

TRANSISTOR

MOTUROLA

MPS9630K

DIODE

RECT

1N4001G,

|

COIL

PEAKING

5.6MH

C,

CERAMIC

CC

200PF-J

SL

50V

COIL

CHOKE

LEVEL

METER

PWB

AY

(511-498A)

SP

SELECTOR

SW

PWB

AY

(511-499A)

SYMBOL

NO.

PART

NO.

DESCRIPTION

SYMBOL

NO

PART

NO.

DESCRIPTION

C201,

202

668-133A

IC

IR2431

(LED

DRIVER)

1

554-606G

SW,

PUSH

SUF24N

2Cx4

563-614F

CONNECTOR

AY

MOLEX

4P

2

RS221J07

R,METAL

OXIDE

5%

2W

220

653-402B

LED

SENIOR

SE-6611-H

GN

653-402A

LED

SENIOR

SE

-6611-H

RD

R201

RD222J09

R,

CARBON

FILM

2.2K

-J1/4WM

R202

RD123J09

R,

CARBON

FILM

12K

J71/4WM

R203,

204

RD823J09

R,CARBON

FILM

82K-J1/4WM

EXPLODED

VIEW

FOR

CABINET

—11—

—

10

—

This

parts

list

is

only

PARTS

LIST

FOR

CABINET

EXPLODED

VIEW

applicable

to

Gold

Star

standard.

Be

sure

that

all

parts

No’s

are

subject

to

change

according

to

regional

characteristic.

NO.

PART

NO.

ODn

Ooh

WAN

—

©

11

12

13

|

14

15

16

|

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

258-400A

276-067A

384-050A

A63-007A

384-048A

273-308A

442-634F

334-049A

273-309A

MCC1822J

MRC1830J

219-036A

TRQ1830J

TRO1530J

313-192E

554-6

10A

MRC

18305

321-474A

TRQ1830J

572-602A

321-486A

TRO1822J

TROQ18309

321-475A

MRC

1830J

328-600A

TRO1836J

265-003A

641-642F

NHA2200J

W5B22000

MRC22433

MRC18223

TROQ1843)

511-498A

511-499A

511-497A

TRO18305

TRO1836J

DESCRIP

TION

PANEL,

FRONT

SIDE

CAP

(L)

(R)

GUIDE

POWER

KNOB

LENS,

LED

GUIDE,

PUSH

KNOB

KNOB,

PUSH

SPRING

KNOB

STOPPE®

SPRING

KNOB,

POWER

SCREW

MCC+3x4

SCREW

HOUSING

LED

SCREW

TROQ2+3x6

SCREW

TRO2x6x6

CHASSIS

MAIN

SW,

POWER

DPST

70294

SCREW

BRACKET,JACK

SCREW,

TRQ

2+3x6

JACK,

PHONE

BRACKET

PWB

SCREW

TROQ2+3x4

SCREW

TRO2+3x6

BRACKET,

SPEAKER

S/W

SCREW

BAND,

CONDENSER

SCREW

TRO2+3x8

FOOT,

RUBBER

POWER

TRANS

{FOR

220V)

NUT

NHA-4.0

WASHER,

SPRING

SCREW

PWB

AY

LEVEL

METER

PWB.AY

SP

PWB

AY

MAIN

AMP

SCREW

|

NO.

PART

NO.

DESCRIPTION

t

|

=

49

41

42

43

44

45

46

47

48

49

50

51

52

1

255-073A

256-399C

256-414A

324-348A

681-003D

56

1-002A

NHA

1800)

|

MRC

18301

TRQ1839}

573-047A

573-039A

213-191C

353-027G

472-604B

PLATE

HEAT

SICK

PLATE

BACK

(FOR

RCA

JACK)

PLATE

BACK

(FOR

DIN

JACK)

HOLDER,

CORD

HET

CO

CORD

POWER

CONNECTOR,

SPEAKER

NUT,NHA-3.0

SCREW

SOCKET

AY,

RCA

TYPE

SOCKET

DIN

CABINET

SPECIAL

SCREW

FELT

MEMO

26008080088

FSHSESEHEEEOSH

SE

Sr

rere

nore

reer

rererast

eA

AAR

RTI

EET

AE

LR

TR

A

ARAL

A

NA

A

i

rR

NUP

r=

rn

rrr

PA

RUA

OA

NAA

AAA

AR

ee

TS

NT

AS

A

AR

A

rr

6

A

AA

A

AA

TE

ER

A

JN

APPR

ne

ET

TN

A

NR

NN

A

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Goldstar GSA-3040 User manual

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