Lg Goldstar gsa-5300 User manual

GoldStar

COMPONENT

SYSTEM

SERVICE

MANUAL

CAUTION

SERVICING

THE

CHASSIS,

READ

THE

‘‘SAFETY

TIONS",

IN

THIS

MANUAL

MODEL:

GSA-5300

GST

-5300

GSW-5300

CONTENTS

GSA-5300

SPECIFICATIONS

.

BLOCK

DIAGRAM.

.

SCHEMATIC

DIAGRAM

.

PCBLAYOUT......

WIRING

DIAGRAM

...

IC

INTERNAL

DIAGRAM

..

EXPLODED

VIEW

REPLACEMENT

PARTS

LIST

¢

ELECTRICAL..

©

CABINET

...

GST-5300

SPECIFICATIONS

ADJUSTMENT

.....

BLOCK

DIAGRAM.

.

SCHEMATIC

DIAGRAM

.

PCB

LAYOUT

WIRING

DIAGRAM

...

IC

INTERNAL

DIAGRAN

...

EXPLODED

VIEW

REPLACEMENT

PARTS

LIST

¢

ELECTRICAL...

©

CABINET

GSW-5300

SPECIFICATIONS

..

26

ADJUSTMENT

...

27

STANDARD

MAINTENANCE

.

Hie

BO.

BLOCK

DIAGRAM.............

.

3

4

35

36

37

SCHEMATIC

DIAGRAM

.

PCBLAYOUT........

WIRING

DIAGRAM

.....

IC

INTERNAL

DIAGRAM

.

EXPLODED

VIEW

*

CABINET

©

DECK

MECHANISM...

REPLACEMENT

PARTS

LIST

¢

ELECTRICAL..

©

CABINET....

*

DECK

MECHANISM...

SAFETY

PRECAUTION

Many

electrical

and

mechanical

parts

in

this

chassis

have

special

safety-related

characteristics.

These

characteristics

are

often

passed

unnoticed

by

a

visual

inspection

and

the

protection

affored

by

them

cannot

necessarily

be

obtained

by

using

replacement

components

rated

for

higher

voltage,

wattage,

etc.

Replacement

parts

which

have

these

special

safety

characteristics

are

identified

in

this

manual,

electrical

components

having

such

features

are

identified

by

a

ZX

in

the

schematic

diagram

and

the

parts

list.

Before

replacing

any

of

these

components,

read

the

parts

list

in

this

manual

carefully.

The

use

of

sub-

stitute

replacement

parts

which

do

not

have

the

same

safety

characteristics

as

specified

in

the

parts

list

may

create

shock,

fire

or

other

hazards.

INTEGRATED

AMPLIFIER

GSA-5300

SPECIFICATIONS

Out

Power...

..50W

RMS

TD

ies

ahetecsse

0.3%

Frequency

Response

..

.

-20—30KHz

Signal/Noise

Ratio

IHF/A

Curve

Phono...

..

70dB

Others.

.

. .

88dB

Graphic

Equalizer

100/350/1K/3.5K/10KHz

...

.

+10dB

Power

Source

.

AC

220V,

50Hz

Power

Consumption

...

175W

Dimensions

(W

x

H

x

D)

.

345

x

107

x

280(mm)

Weight

..6.0Kg

*

Minimum

continuous

RMS

output

power

per

channel,

both

channels

driven

into

8

ohms

fron

201

to

20,000Hz

with

no

more

than

rated

THD.

BLOCK

DIAGRAM

OuLNoD

L0WaE

sis—

NOOK

aTrun

SIAW

4GNO3]

s

fer

ee

g

ix

ixk

coco

|S

_

:

[pune

a8

uanod|

|

32

L

b

5

3

4

NS

77

OUND

NOILONNS

“SouLNOD

WA

uandans

ayia

(03

DIHdvuD

°

any

"31N

agave

any

ONOHS

OL

uaruans

[>

o

030

saraans

[>

0

waNNL

{!

1

AS

uai3aM

73A7

SNVUL

U3)

wanvads

WHO

8

47

28a

[]

toro

wa

arua

HOLIMS

‘Ot

aana-uA

‘aNIZO3H

NODONSY

"300030

NOSOWSH

801

‘2010

wana

JOULNOD

NOLLONNS

|

gazrwroa

o1Hd

wyO

A

vw

10291

JOULNOD

NOILONNS

HOLIMS

OOTVNY

rorot

O

on

ONOHA

wanna

xn

na

—O

avd

woAvoIGN!

NOTIONS

PET

TaNNYHO

MOT3@

SY

aNVS

SCHEMATIC

DIAGRAM

402

RiREae

~

a

=

:

as

be

:

z

aint

aad

Sf

Spay

phe

af

agaga

zag

ett

PCB

LAYOUT

=

3

a

"|

i

aL

fee

C

Vick

oe

MC,

8

ee

=

CW

a

5

azO@e

Quik

%

Wo

eles

we

ah)

SEV

|.

ern,

Se

|

(|

—

¥

‘te

*

?

ine

piers

|

ee

RRs

ne

Eee

BS,

we

ta,

Sila

Se

=

ome

a

Pt

Pine

ee

an

OE

a”

Moe

|

ir

Sil

Z

wel

URS

moe)

fiw

Se

"

% &

:

=

os

iHess

age

es

ae

SE

aS

Mod

iJ

2

F501_125V

3A

ox.

:

An

os

:

20

=

;

&|

d

:

bs

|

eae

"WL

ys

ea

>)

Se

Bin

BS

“E

Es

=

/

[E

Set

Seowe|

|

(ecto

:

Siew

oe

bea

oe

Boa

Ud)

;

j

4

r™

ala

Se:

Oe

i

wie

i

|

Bg)

|

i

me

mies

|

ie!

GG

Ee

i

ae

Ei

ve:

Sh

ce

eee

gl

|

ee

#

%

=

ic

eno

au

4

i

pele

es

if

i

OP

:

Cae

oo

=

te

oo

8

R207

ae

Salle

=

©

all

cam

Se

ea

|

WIRING

DIAGRAM

sbi:

ay

greg,

(MM

IC

INTERNAL

DIAGRAM

1C101,

104,

201,

308

KA4558

1C103

TC9153AP

IC105

TC9149P

cx

1C202

TC9148P

I

i]

i

1C301,

302

KA2223

Gy

BIAS

vec

OUTPUT

NF

INPUT

NFS

BASES

1C401

STK4191

Rin

EXPLODED

VIEW

REPLACEMENT

PARTS

LIST

PRODUCT

SAFETY

NOTICE:

Products

marked

with

a

Z\

have

special

characteristics

important

to

safety.

Before

replacing

any

of

these

components,

read

carefully

the

safety

precaution

of

this

service

manual,

don’t

degrade

the

safety

of

the

receiver

through

improper

servicing.

NOTE:

“R”

marked

parts

at

the

remark

mean

parts

which

are

the

serviceable

parts.

“S”

marked

parts

at

the

remark

mean

parts

which

are

the

spare

parts

and

the

serviceable

parts.

«

ELECTRICAL

T

ee

Part

No.

Description

Remark

Location

Part

No.

Description

Remark

INTEGRATED

CIRCUITS

IC101

668-051D

|

KA4558-OP

Amp

S

|

108-111

|652-605B

|

Switch,

182472

s

Ic102

668-661C

|

LC7818-Function

s

|

D201

653-642A

|

LED,

EL-1L1

s

IC103

668-681A

|

TC9153AP-Electronic

s

|

D202

653-6428

|

LED,

EL-1L2

s

Volume

D203,

204

|652-605B

|

Switch,

1S2472

Ss

1c104

668-051D

|

KA4558-OP

Amp

s

|

0205

653-617A

|

LED,

SLC-26UR

RD

s

1C105

668-090B

|

TC9149P-Function

s

0207

653-636A

|

LED,

SLR54URC3-M

RD

s

1C106

668-057A

|

MC14013BCP-D

Flip

Flop

|

§

_|

0301-305

/653-636D

|

LED,

SLR54GC3-P

s

10201

668-051D

|

KA4558-

OP

Amp

Ss

D306

653-636A

|

LED,

SLR54URC3-M

RD

Ss

Ic202

668-089B

|

TC9148P-Function

$

|

0308-317

|653-636D

|

LED,

SLR54GC3-P

s

1C301,

302

|

668-655D

|

KA2223-5

Dot

G

EQ

s

|

0318-321

|653636A

|

LED,SLR54URC-3-M

RD

s

1C303,

304

|

668-673A

|

KIA7666P-LED

Driver

$

|

0322-328

|652-605B

|

Switch,

IS2472

|

$

1C308

668-051D

|

KA4558-OP

Amp

Ss

401-403

|652-605B

|

Switch,

1S2472

Ss

(C401

668-561C

|

STK4191-Power

s

|

D404

652-005C

|

Rect,

DS4001

s

XR305

|

668:090C

|

SG05-Remocon

S

|D410

—

654-724C

Zener,

02138

s

:

Modulation

D501

|652611A

|

Rect,

KBPC604

s

0502

652-013A

|

Rect,

WOOSM

SAN

Misael

Peay

gg

_

|

9508,

504

|652005C

Rect,

04001

s

D505,

506

|654-724D

|

Zener,

DZ15B

s

eae

ne

ery

2

D512

—-|654-723A

|

Zener,

DZ5.6B

s

Q107

665-812B|

KTC1815-Y

s

|

0

eet

Doan

:

108

665-812B|

KTC1815-Y

s

__

|

MISCELLANEOUS

Q151

665-812B|

KTC1815-Y

S|

vR301-305|612-610W|

VR,

5S0KW-G

EQ

Ss

Q152

665.813C|

KTA1015-GR

|

§

|vrgoe

—

|612610V

|

VR,

250KW-Balance

s

Q153

665-812B

|

KTC1815-Y

s

611-6491

|

VR,

100KB-Mic

Mixing

s

201

665:814B

|

KTC1959-Y

Ss

|

SWF1-12

|558-908A

|

SW,

KH10902

R

202

665.813C

|

KTA1015-GR

S

|

SWH1

[554-6334

|

SW,

SEA12A+Hi

Filter

s

203

665-814B

|

KTC1959-Y

S

|

SWH2

—

|554633A

|

SW,

SEA12A-Meter

s

301-303

|

665-812B

|

KTC1815-Y

s

554624)

|

SW,

SUN12-Power

s

2401-403

|

666-4214

|

KTA949-0

s

572-1344

|

Jack,

D=6.4-Mic

s

404,

405

|

665-812B

|

KTC1815-Y

s

572-059D

|

Jack,

D

=

6.4-Headphone

s

Q406

665-8344

|

KTC2229-0

s

576-002A

|

Jack,

Block

S-437P

R

Q501

664-602C

|

KTB834-Y

s

557-010A

|

Relay,

VS24MB-Power

Onort

|

R

AN

502

665-708B

|

KTD526-Y

s

561-100B

|

Speaker

Terminal

R

503,

504

|

665-814B

|

KTC1959-Y

Ss

|

Fs501

585-512A

|

Fuse,

250V

1.6V

sA

586-001C

|

Fuse

Clip

5

x

20

R

Pare

652-605B

|

Switch,

182472

s

R201

616-020B

|

Resonator

Ceramic

CSB455

s

5

636-6038

|

Coil,

Choke

2.7uH

R

-W1-—

¢

CABINET

Location

|

part

No.

Remark)

Location

|

part

No.

Description

Remark

C1

258-501A

|

Panel,

Front

Ss

D-4

|

256-615

Plate,

Bottom

s

c2

246-550B

|

Decoration,

Front

s

05

641-733

C

|

Trans,

Power

(Main)

sh

C3

273-5291

|

Power

Knob

Ass'y

Ss

Dé

|

641-732

C

|

Trans,

Power

(sub)

sA

C31

|

273-8001

|

Knob,

Power

Ss

D9

|

221-531A

|

Cover,

Insulation

Ss

C32

|

324-331B

|

Holder,

Power

Knob

s

D-10

—_|

TRQ1830J

|

Screw,

TRQ2+3x

6A

C5

442-634X

|

Spring,

Power

Knob

s

D1

|

TBQ1830J

|

Screw,

TBQ+

3x6

cé

324-552A

|

Holder,

Slide

Knob

s

D2

|

TBQ1830J

|

Screw,

TRQ+3x6

C7

273-550A_

|

Knob,

Slide

Volume

s

p13

|

TRQ1830J

|

Screw,

TRQ2+3x6

cs

231-5611

|

Sheet,

Display

s

D-14

|

TRQ1830J

|

Screw,

TRQ2

+3

x

6A

cg

236-550A_

|

Window,

Inner

s

D415

|

TRQ1830J

|

Screw,

TRQ2+3

x

6A

C10

|

231-561J

|

Sheet,

Display

s

D-16

|

TRQ1830J

|

Screw,

TRQ2+3x

6A

cn

236-551A

|

Window,

L.E.D.

Ss

DAZ

TCQ1830J

|

Screw,

Tapping

TC3+3x6

C12

273-5101

|

Knob,

Decoration

s

D-18

|

353-633A

|

Screw,

Special

Ss

C13

324-553A_|

Holder,

Tuning

s

D-19

|

TRQ2241K|

Screw,

TRQ+4x

12

C14

442-635A

|

Spring,

Knob

s

D-20

|

MRC1836J|

Screw,

MRC

+3x8

C15

273-530A

|

Knob,

Decoration

(Phono)

Ss

D21

NHA1800J

|

Nut,

NH1-3

C16

273-530B

|

Knob,

Decoration

(Tuner)

Ss

D-22

265-027A

|

Foot

R

C17

273-530C_|

Knob,

Decoration

(CD/AUX)|

S

D23

(472610B

|

Felt

C18

|

273530D

|

Knob,

Decoration

(TV/VCR)

|

S

D-24

—

321-001A_|

Bracket,

Power

Trans

Ss

C19

|

273-530E

|

Knob,

Decoration

(Tape)

s

EA

|

258-500B

|

Panel,

Back

Ss

C20

273-530F

|

Knob,

Decoration

(Mute)

Ss

E2

681-004F

|

Power

Cord

Ss

C21

|

273530G_

|

Knob,

Decoration

(Meter)

s

E3

324-3484

|

Holder,

Cord

s

C22

|

273.530H

|

Knob,

Decoration

(Hi-Filtey)

S

E4

|

321-997A

|

Bracket,

Connector

s

C23

|

324510A

|

Holder,

Knob

(A)

s

E5

|

TRQ183911|

Screw,

TRQ253

x

10A

24

|

324511A

|

Holder,

Knob

(B)

s

E6

|

TRQ18391

|

Screw,

TRQ253

x

10A

C25

|

442634G_|

Spring,

Knob

s

E7

TRQ18301

|

Screw,

TRQ2+3x

6A

C26

|

324-551A

|

Holder,

Push

Ss

E8

353.055A

|

Screw,

Special

Ss

C27

‘|

442-634W

|

Spring,

Power

Knob

Ss

G

511-1384

|

PCB

Ass’y,

Main

R

C28

273-513F

|

Knob,

Rotary

Ss

G9

255-561A

|

Heat

Sink

C29

|

321-917A

|

Bracket,

Phone

Jack

s

G18

|

TRQ1830J

|

Screw,

TRQ2+3x

6A

C30

|

353-025G

|

Screw,

Special

Ss

G53

|

255.0744

|

Heat

Sink

31

|

MRC1830J)

Screw

G54

|

MRC1843)

Screw,

MRC

+3x

14

C32

|

321-999A

|

Bracket,

MIC

Jack

s

G55

NHA1800J

|

Nut,

NH1-3

C33

|

353-025G

|

Screw,

Special

Ss

G60

|

255-500B

|

Heat

Sink

34

|

363-025G

|

Screw,

Special

s

G61

|

321-998A

|

Bracket,

Heat

Sink-L

s

C35

|

353-025F

|

Screw,

Special

s

G62

|

321-998B

|

Bracket,

Heat

Sink-R

s

36

|

363-.025F

|

Screw,

Special

5

G63

|

TRQ1830J

|

Screw,

TRQ2+3x

6A

C38

|

231-561K

|

Sheet,

Remote

G64

|

TRQ1844J

|

Screw,

TRO2

+3

x

16

D-1

213-500A

|

Cabinet

Ss

D2

|

313525B

|

Chassis,

Main

s

D3

315511B

|

Frame,

Side

R

S12=

SYNTHESIZER

TUNER

GST-5300

SPECIFICATIONS

FM

RADIO

Tuning

Range

Usable

Sensitivity

Mono

3%

THD

Mono

3%

THD

Stereo

3%

THD..

87.9

to

107.9MHz

11.2dBf

.

19.2dBf

Image

Rejection............-.....eeee

70dB

Distortion

Mono

0.15%

Stereo

1kHz

.

0.2%

Stereo

Separation

............-.502

eee

...

50dB

AM

RADIO

Tuning

Range

Usable

Sensitivity

Image

Rejection....

552

to

1611KHz

.

300uV/m

.

35dB

DISKOMIONS

s-fety

oven

ce

ad

ae

ne

a

yeieie

oa

an

oreo

nie

Hae

EAS

1%

GENERAL

Power

Source

AC

3/15/24

Volt

(0.1/0.4/0.1A

MAX)

Dimension

(W

x

H

x

D)

.

345

x

72

x

280

(mm)

Welohticcoistwsnoti

acest

tniieate

nasgatasnn

sacra

ote

2.6Kg

ago

ALIGNMENT

INSTRUCTIONS

EQUIPMENT

NEEDED:

.

AM

Signal

Generator

.

FM

Signal

Generator

.

AM/FM

IF

Genescope.

.

Oscilloscope

VIVM

.

Test

loop

antenna

(AM

Adjustment)

Dummy

antenna

(FM

Adjustment)

.

Stereo

signal

modulator

.

Frequency

counter

WOMNMAARWHS

IMPORTANT

1.

Check

power-source

voltage.

2.

Set

the

function

switch

to

band

being

aligned.

3.

Keep

the

signal

input

as

low

as

possible

to

adjust

accurately.

4,

Modulation

and

modulation

frequency:

Item

Modulation

frequency.

Band

AM

1kHz

30%

FM

1kHz

100%

(75kHz

Dev.)

TEST

AND

ADJUSTMENT

POINT

'e

TI01

2

:

O ©

|

LPF302

©

o3

O

|

LPF301

fe)

O5

R110

GO]

Los

T.

¥

sa

~

O8

C1

09

famed

ua

es

wes

R209

>

©

'

T201|

O

ies

TCs,

a

o—

f

i

O12

H

O13

i

ou

O15

MAIN

P.C

BOARD

-14-

AM

IF

ADJUSTMENT

IF

Genescope..........-

The

input

connects

to

the

test

point

(K),

the

output

connects

to

16.

Adjust

for

the

IF

wave

form

of

Genescope

to

be

maximum.

IF

Genescope

O

SET

Test

point®

c—

a

IF

Adjust

for

|

Adjustment

I

ourg

°

oO

450kHz

|

Maximum

T101

16

AM

RF

ADJUSTMENT

(Cover

range

&

Tracking)

DC

Volt

Meter.........

Connect

to

GND

and

VCO

test

point

®)

NO.

|

Frequency

Adjust

for

Adjustment

SET

1

522kHz

2v

L104

~

2

1611kHz

24.5V

TC104

ad

DG

3

Repeat

steps

1

and

2

several

times

®

NK

Volt

meter

Maxima

4

603kHz

a

L102

(Cover

range

voltage

alignment

SensHuvy

connection

diagram)

5

41404kHz

Maximum

Cie

sensitivity

6

Repeat

steps

4

and

5

several

times

FM

IF

ADJUSTMENT

IF

Genescope.

.

DC

Volt

Meter.

.

The

input

connects

to

the

test

point(E),

the

output

connects

to

©

.

Connect

to

test

point

(M)

and‘(N)'

(Both

side

R209).

L

7

No.

Adjust

for

Adjustment

Remark

0-

7

1C201

R209

1

ov

201-1

See

figure1.

Maximum

linear

10]

Volt

meter]

|

2

T201-2

|

See

figure

24),

(b)

S

curve

Figure

1

0

IF

Genescope

Test

point(©)

10.7MHz

b)

Figure2

245

<

FM

RF

(Cover

range

&

Tracking)

Signal

Generator

.

DC

Volt

Meter.

Connect

to

FM

Ant

through

the

dummy.

..Connect

to

VCO

test

point

‘wy

and

GND

PN

Dummy

DC

Volt

meter

SSG.

NO.

|

Frequency

Adjust

for

Adjustment

1

87.9MHz

4.5V

L6

2

107.9MHz

24.5V

TC5

3

Repeat

steps

1

and

2

several

times.

4

90.1MHz

|

Maximum

sensitivity

L2, L3,

L4

5

106.1MHz

|

Maximum

sensitivity

TC1, TC2,

TC3

6

Repeat

steps

4

and

5

several

times.

FM

T.H.D.

ADJUSTMENT

..

Connect

to

FM

Ant

(Pin

18)

through

the

dummy.

.

Connect

to

the

output

Signal

Generator

..

.

Distortion

Meter.

...

Dummy

Set

Distortion

Meter

FM

|

SSG.

¢

)

Output

NO.

|

Frequency

Adjust

for

Adjustment

1

98.1MHz_

|

Minimum

T.H.D.

201-1

NOTE:

At

this

time,

the

DC

voltage

between

test

point

Or

and

1

(Ny

should

be

realigned

by

T201-2

to

keep

on

0

voltage,

because

the

“S”

curve

may

be

detuned.

(Using

Frequency

Counter,

adjust

it’s

point

until

indicating

98.1MHz

exactly.)

-16—

FM

MPX

ADJUSTMENT—SEPARATION

Stereo

Oscilloscope

EXT

OUT

Dummy

Set

FM

|

ssc

[p

9

LA

@

VTVM

FM

ANT

vR301

OUTPUT

Stereo

|

OUTS

Modulator

Pilot

Signal

Adjust

for

Adjustment

|

NOTE:

In

case

of

adjusting

the

stereo

separation,

if

input

is

L

(or

R)

channel,

R

(or

L)

channel

must

be

Difference

of

R

and

ini

On

:

R301

minimum.

L

must

be

maximum

FM

STEREO

BEACON

SENSITIVITY

&

AUTO

SEARCH

LEVEL

ADJUSTMENT

Stereo

Oscilloscope

EXTOUT

Dummy

Set

FM

SSG.

°

k

©

VTIVM

FM

ANT]

Output

VR201

Stereo

OUT

Modulator

Pilot

signal

|

Imput

of

FM

ANT

|

Adjust

for

|

Adjustment

FM

Stereo

Beacon

ST

LED

SuV

Sensitivity

Lamp-ON

ON

VR201

19dB

(FM)

Lamp

Auto

Search

Level

35dB

(AM)

—ON

eS

pe

BLOCK

DIAGRAM

A>

2

i

NOY

u

i

istov

Q!!

AWlgsia

1Na9S340NT4

~

<

iT}

|

Az

PN

ZHW

O1-E6

-Wd

ae

PAI

Xx

A

al

430/

41/48

|

ny

YaZISAHLNAS

o3ua

Wd

woo-n

¢

4ndino

ZHAGSY

0}

4

mn

WASAND

ANv

4007

wy

4d7

aq

D1

dWy

1sod

@XdW

ot

a

i

130

e414

nv

ah

-~18—

SCHEMATIC

DIAGRAM

—19—

SCHEMATIC

DIAGRAM

LG GoldStar GSA-5300 User manual

Popular Stereo System manuals by other brands