LG GoldStar TSR-580 Manuel utilisateur

Ce manuel convient aux modèles suivants

1

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Gold

Star

Audio

SERVICE

MANUAL

for

service

technician

:

SPECIFICATIONS

4]

GoldStar

a

ttre

aa

neat

Nhe

eeainhORvUNe

nt

STEREO

CASSETTE

RECORDER

with

RADIO

TSR-580

(em/swuwim

TSR-585

(rm/sw,/sw,

saw

po

|

This

specifications

may

be

changed

for

improvement

of

performance

without

notice.

Radio

section

aaa

dig

aie

ke

Be

Superheterodyne

AM/FM

MPX

Stereo

AM:

Ferrite

ant.

FM:

Double

rod

ant.

FM:

87.5-108MHz

SW2:

6.8-22.5MHz

SW1:

2.25-7.2MHz

SW:

5.8-18.3MHz

MW:

525-1

,605kHz

LW:

150-350kHz

AM:

455

(465)

kHz

Circuit

system

co

e@

©

8

@©

*#

@

6

#@#

#@

8

@

8

€

Intermediate

frequency

FM:

10.8MHz

Usable

sensitivity.

........

MW:

54

dB

LW:

60

dB

FM:

4448V

SW:

45dB

SW2:

45

dB

SW1:

56

dB

|

Signal

to

noise

ration

.

2...

AM:

40

dB

|

FM:

54

dB

Frequency

response

(0+4

dB)

Cassette

section

Circuit

system

eo

©

©

©

8#

©

££

28

©

©

Recording

system

.

ceey

micas

AC

Bias

(57

kHz)

Erasingsystem

..........

AC

Erase

F.F.&

Rewtime

........

-.90

sec

(c-60)

Wow

&

Flutter

.....

....

0.09%

(WRMS)

Frequency

response

FS

ale

yh

Gert

he

te

ew

Ee

Nor.:

100-10

QGOHz

CrO,

:

100-12,000Hz

REC/PB

a

ED

ee

a

OS

Nor:

100-8

OOOHz

CrO4:

100-10,000Hz

Signal

to

Noise

ratio

RECIPES

4

ask

eae

goed

45

de

General

Power

output

(10%

T.H.D.).

.

.4.5W+4.5W

a

ee ee

ee

AC

220V

50Hz

DC

12V

(DM

1.5V

x8)

bas

cof:

a

we

ea

7IC’s,

37TR’s,

31

Diodes,

Power

supply

Semiconductors

aes

—

Sy

wo

oO

a.

ow

4

LED's

Power

consumptions.......

26W

|

ORR

MEE

ts

gam

Gh

A

eae

ee

Ok

Woofer

16cm

(3.22);

2

Tweeter

5cm

(4)

x?

Weight

.

<

«408

das

4

eed

7.3kg

(without

Batt)

re

ey

ee

ee

520(W)x260(H)x130(D)

mm

Printed

in

Korea

Aig.,

1983

5

en

eee

es

etre

o

Gee

:

&

oe

:

rae

Se

cote

ete

aa:

aie

:

-

et

mee

aes

Y

me

im,

on

s

.

te

7

7

ee

Me

an

_

.

=

Pas

i

ae

vat

Bode

Aa

by

EA

Fag

ee

ee

Bote

te

et

ae

ee

a

en

Se

tae

trac.

aes

Set

=

Shri

lt

PONTE

Ssh See

ateyG

Rie

Bae

elem

a

oe

ene,

eee

geet

se

es

ee

gees

See

ee

Pee

eee

«

Seabee

a

eee

ae

ae

ee

Ge

Ee

Fe

ae

ee

ee

ar

see

mR

rR

te

%

OR

at

bial

gk

CS

Sal

tela

S

ve

Fat

et

te

the

OE

rer

PEST

ad

ARS

ne

at

Rl

pe

TAT

OS

Ee

el

Re

CDS

IMPORTANT

SAFETY

NOTICE

Components

of

important

for

safety

are

shaded

on

the

schematic

diagram

and

on

the

replacement

Parts

list.

It

is

essential

that

these

critical

parts

should

be

replaced

with

manufacturer’s

specified

Parts

to

prevent

electrical

shock,

fire,

or

other

hazards.

Do

not

modify

the

original

design

without

permission

of

Gold

Star

Co.,

Ltd.

To

the

service

technician

-

a

a

The

service

manual

contains

detailed

service

information

for

Model

TSR-580/585.

fe

Illustration

of

the

model

appears

on

front

cover.

:

“a

Please

give

attention

to

next

caution.

oe.

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.

oS

To

do

otherwise

increases

the

risk

of

potential

hazards

and

injury

to

the

user.

a

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.

|

2.

Always

replace

all

protective

devices

such

as

insulators

and

barriers

after

working

on

a

receiver.

3.

Check

for

frayed

insulation

on

wires

including

the

AC-cord.

Also

check

across-the-line-components

for

damage

and

replace

if

necessary.

4.

All

fuses

and

certain

resistors

and

capacitors

which

are

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,

antenna

terminal,

etc.

to

be

sure

the

set

is

safe

to

operate

without

danger

of

electrical

shock.

To

order

repair

parts

Part

orders

must

contain

1.

Model

Number

—

found

on

front

cover

in

this

service

manual.

2.

Part

Number,

Description

and

Quantity.

CONTENTS

Dial-COra

arhaMGement

ssc

arasd

cn

rd

Geie

ow

aot,

G.

apd

he

He

We

weno

eo

eke

ek

AN

ad

ee

ER

EA

2

PAGO

MUVOGK

MUCHOS”

32.15,

toresch

xe

ay

mh

an

gra

Gidh

she

hee

ae

OA

de

de

WU

Bees

Pais

SEG

An

attciets

ia

bg

ae

2

Schematic

Qiagram,

(LOR

S80):

23.6.152.2-.0.0:

58

a

em

ad

ghd

antande

S.

Be

Bch

hk

ech

ae

10-14

SCHEMANG

Giagram

(TSH

OBO)

e652.

4c

fe

at

2

ice oak

ok

gt

Sie

pai

Gia

BE

Me

dace

Gee.

a

bak

heat

de

ee

3

12-13

4

EIECINICGl

SERVICE

DGRtS!

LIST

-t

Gom.

ate

ts

discs

ah

tse

tet

iss

pe

wo

eden

sew

Beha

fe

eset

ip

vs

ER

ak

etd

A

Sen

Bact

Se

14-15

4

Exploded

View

TOrmCaDINeL

ants

bake

4

%

asy

Aw

bk

hod

eb

Sok

ite

HS

Se

kt

eae

ed

16-18

:

Parts

list

for

cabinet

exploded

view

..

0.0.0.0...

000.

eee

eee

bebe

eee

eee

19

:

Exploded

view

for

deck

mechanism

&

parts

list

.

2...

0.0.00.

e

cece

eee

cece

eee

ee.

20-%3

:

;

PS

SP

PEER,

GOTT

TTS

DIAL

CORD

ARRANGEMENT

Fig.

1.

Set

the

varicon

to

minimum

frequency

and

string

the

cord

by

following

the

number

sequence

order

as

shown

in

Fig.

1.

ALIGNMENT

INSTRUCTIONS

This

cassette

radio

has

been

aligned

at

the

factory

and

normally

will

not

require

further

adjustment.

As

a

result,

it

is

not

recommended

that

any

attempt

is

made

to

modificate

any

circuit.

If

any

paris

are

replaced

or

if

anyone

tampers

with

the

adjustment,

realignment

may

be

necessary.

Test

equipment

required

1.

AM/FM

signal

generator

2.

IF

sweep

generator

(10.7

MHz)

for

FM

3.

1F

sweep

generator

(455

kHz

or

465

kHz)

for

AM

5.

Standard

loop

antenna

for

AM

6.

VTVM

7.

Oscilloscope

8.

Frequency

counter

9.

Audio

frequency

oscillator

10.

Test

tapes

a)

MTT-144

(10

kHz)

b)

MTT-122B

(1

kHz)

c)

MTT-501

(Blank

tape)

EE

.

get

RS

yu

tas.

=

wid

WATERS

8

gc

a

se

NALS

ak

-on.

%:

‘

7

me

Ba

Saba

gst?

a.

st

F

_

TED

STL

7

CN

Aaa

bby

tee

rer

see

os

Sakae

wl

Se

bites

ober.

stalea

stag

ale,

3

‘

PAE

Becket

ial

eh

gee

gate

new

A

eal

co

2

le

ae

BS

#

40

ee

ob

cAae

=

sd

a

apa

Se

ae

“os

om

*

TT

age

A

tree

fete

®

§s

eR

lets

;

eri

aa:

TES

1.

CASSETTE

ALIGNMENT

Tape

head

and

capstan

cleaning

1.

Periodically

clean

the

tape

head,

capstan

drive

shaft

and

other

tape

handling

surfaces

to

insure

proper

tape

handling

and

optimum

frequency

response.

2.

Use

a

cotton

swab

lipped

in

head

cleaner

or

denatured

alcohol

to

clean

all

tape

handling

surfaces.

Wipe

dry.

Tape

head

demagnetization

When

servicing

tape

unit,

do

not

use

magnetized

screwdrivers

or

wrenches

near

the

tape

head

since

they

can

magnetize

the

head.

=

A

magnetjzed

head

will

result

in

loss

of

high

frequency

response

and

increased

noise.

Head

adjustment

Head

adjustment

is

normally

required

when

the

head

is

replaced

or

for

cases

of

cross-talk

and

poor

high

frequency

response.

Adjustment

points

RV102

RV302

UU

LED

level

R/P

Switch

RV103

Bias

Current

&)

RV303

&)

»

RV301

&)

Rec

level

avi01

&)

Bias

freq.

AZIMUTH

ADJUSTMENT

Fig.

2.

AUDIO

P.C.

BOARD

Test

tape

Adjustment

Adjust

for

MEAS

Maximum

(10kHz)

Azimuth

Adjusting

Screw

LED

METER

ADJUSTMENT

[Lineinjphono.

|...

y

Test

——:

TkHz-

|

Amp.

Flat

Amp.

|

VTVM_

Tape

f

Flat

Amp.

cern

e

oom

fp

LS1e-

6-3

Pee

ee

oe

ee

6

;

Rvi02_

|

Rvi02

|

RV302

RV302

se

MTT-112B

L:

RV102

=

(1kHz)

R:

RV302

Line

in

VTVM

RV103

(RV303)

Adjustment

L:

RV103

R:

RV303

Input

Adjust

for

No

Signal

AC

10V

+0.5V

*

Tape

select:

Normal

Tp

eee,

By

’ .

‘a

a

Ree

tee

°

ep’

oo

eg

Re,

pha

2002

SM

rte

TO

ae

ae

$e

REC

LEVEL

ADJUSTMENT

oy

Me.

7

po

1

Oe

.

Mic

Amp.

Flat

Amp.

=

60dB

p

p

VTVM

|

Flat

Amp.

l

VIVM

RV101

(RV301)

od

3

a

a”

Peery

4

ayy

ae

~

te

ae.

es

*

1

2

L:

RV101

2

REC

MODE:

AUTO

TAPE

SEL.:

NOR

R:

RV301

;

MTT-112B

Lower

about

(P/B)

(1kHz)

3dB

than

A

oan

4

ees

<7

oa

eee

ae

a

.

ae

oo

wie

a?

pe

te

gan

pet

:

BIAS

FREQUENCY

ADJUSTMENT

Mo.

po

-----

-------------

5

REC

Amp.

eee

FREQ.

2

COUNTER

:

7

|

Input

Adjust

for

Adjustment

|

|

No.

signal

EE

eee

AES

eh

Ieee

TS!

:

*

RAF.

S/W:

“2”

position

2.RADIO

ALIGNMENT

5]

L9

|

SJ

sw

(sw,)

osc

Ls

eae

-

sw

(swo)

©

YS)

SW(SW,)

Ant.

.

Sw(SW.)

OSC

Ant.

“J

Tc7

S

LWisw,)

OSC

SO

NW

OSC

Vane

73

(6

[Q]

2

FM

IF

;

|

Fig.3

RF

P.C.

BOARD

|

Gt

Nees

Egat

Ys

a

Ay

“gt

pai

ig

ae

3

=

bite

OX

eg

Be

a

ert

itatbal

is

2

of

eat

-®

twee

LE

SSAC

oe

ats

BLT.

Pa

PLAT

se

ed

we

Seat

LS

ava

ft

pets

5

Pipe

=

gate

tesa

wee

as

wk

ae

ohh,

=

Be

“

fai

Lo

tee

ae

Ls

rae

OR

st

iy

*

wt

mary

ate.

4

aaa

Sow

ee

er

a

ee

ne

ee

a

ean

So

ainrineiarerreine

ay

1

te

ne

oa

a

ei

;

;

fee

“

as

bie

gh

aye

Bee

a

:

ae

tle

.

:

&

Dg

aoe

2

gage

wth

ig

ge

aan

Be

is

te

he

tise

ee

*

a

Ue

Pras

Ota

aoe

nie,

ametia

Sate,

Nae

Se

ere

Stas

eee

eed

:

Deena?

50

:

BN

ad

a

eee

Oe

a

A

eZ!

RET

0

$2

55

i

2

‘

:

wee

-

3

fs

zZ

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hee

.

cae

Pe:

¢

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Ft

ae,

pa

¥

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Ce

be

—

os

ree

Sas

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ree

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:

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pede.

4

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oa

7

Loe

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Peg

ad

Soe

+

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bay

De

Pe

.

.

i

G

a

<

i

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io

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Fd

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gta

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gle

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eeu

ered

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aoe

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Spee

cy

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rn

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Foret

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Me

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had

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be

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Maas

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dese

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Pt

te

Fa

eer

ens

0

o's

5)

2

RSE

eT

Ss

WY

AE,

Swreay

9

BN

SS

OT

ate

it

Es

Sa

xi

5

4

\

eon

Rie!

7

ek

A

re

AM

Alignment

Chart

item

TSR-580

(TSR-585)

Dummy

input

Output

P

:

Ant.

Instrument

&

Adjustment

Dial

Setting

Purpose

Frequency

Point

Terminal

Terminal

AM

IF

sweep

generator

and

Detector

Generator

Tuning-Gang

Adjust

for

the

scope

output

counter-clockwise

(C68)

output

Probe

“AY

pattern

with

specified

oscilloscope

or

(Lowest

freq.)

marker

(IF

freq.)

as

AM

IF

genescope

illustrated

in

fig.

5

(Note

1)

AM

SSG

Speaker

515kHz

(400Hz,

30%

Mod)

and

VT

VM

MW

wave

magnet

Tuning-Gang

output

counter-clockwise

or

detector

ant.

(Lowest

freq.)

djust

for

maximum

2

Oscilla-

Adjust

for

ximu

AM

SSG

1650kHz

output

(400Hz,

30%

Mod)

and

VTVM

_Tuning-Gang

gain.

clockwise

(Highest

freq.)

Repeat

the

above

item

2-(a),

(b)

for

minimum

change.

AM

SSG

600kHz

(400Hz,

30%

Mod)

.

Ct

Speaker

:

L4

pik:

MW

ant.

coil

ant.

coi

MW

and

VTVM

ant.

terminal

or

3

ail

AM

SSG

1400kH2

detector

None

Tune

to

signal

oe

(400Hz,

30%

Mod)

ecieut

|

TC3

and

VTVM

Repeat

the

above

item

3-(a),

(b)

for

minimum

change.

Mw

wave

magnet

Adjust

for

maximum

gain.

AM

SSG

150kHz

(2.3MHz)

(400Hz,

30%

Mod)

LW

and

VTVM

(SW1)

Oscilla-

Tuning

gang

fully

counter

clockwise

L8

Speaker

output

(Lowest

fre.)

Lw

(SW1)

terminal

or

detector

(7,0MHz)

(400Hz,

30%

|

ant.

output

Mod)

and

VTVM

Adjust

for

maximum

AM

SSG

350kHz

wave

magnet

None

Tuning

gang

fully

gain.

clockwise

(Highest

fre.)

tor

Cc

Repeat

the

above

item

4-(a),

(b)

for

minimum

change.

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Chart

(cont’d)

item

TSR-580

(TSR-585)

Input

Output

Instrument

&

Frequency

Terminal

Terminal

Adjustment

|

|

j

-

.

Dummy

Hieieee)

point

|

:

a

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ial

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TSR-580

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,

,

:

:

(TSR-585)

ok

L4

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|

LW

ant.

coil

(

oe

(SW,

ant.

coil)

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for

maximum

ie.

None

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to

signal

2

OYE,

TC5

os

Repeat

the

above

item

5-(a),

(b)

for

minimum

change.

AM

SSG

Tuning

gang

:

pat

ae

6MHz

(7MHz)

i

fully

counter

L9

:

:

—

(400Hz,

30%

Mod)

Sp.

output

SW

clockwise

C

a

oY

o

ane

Ant.

relaes

Bom

(Lowest

fre.)

Adjust

for

maximum

:

ap

Oscilla-

Pe

TC8

”

AM

SSG

160kHz

(2,7MHz)

(400Hz,

30%

Mod)

and

VTVM

Speaker

output

terminal

AM

SSG

330kHz

(6.3MHz)

(400Hz,

30%

Mod)

and

VTVM

©

te

x:

or

detector

LW

(SW1)

:

output

wave

magnet

ant.

AM

SSG

input

detector

ant

gain.

output

(Probe

‘“’C’’)

Tuning

gang

fully

clockwise

18MHz

(22

MHz)

~(400Mz,

30%

Mod)

and

VTVM

(Highest

fre.)

45

SW

ant.

coil

(SW2

ant.

coil)

.

Adjust

for

maximum

Tune

to

signal

,

gain,

TC6

c

|

Repeat

the

above

item

6-(a),

(b)

for

minimum

change.

AM

SSG

6.5MHz

(8MHz)

(400Hz,

30%

Mod)

and

VTVM

Speaker

SW

dummy

output

ter.

or

AM

SSG

16MHz

(20MHz)

(400Hz,

30%

Mod)

and

VT

VM

ant.

Pd

(Probe

‘’C’’)

detector

output

BES

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RE

SDS

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FR

STS

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Repeat

the

above

item

7-(a),

(b)

for

minimum

change.

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FM

Alignment

Chart

Instrument

&

Frequency

Adjustment

point

Dummy

Input

Output

Dial

Setting

Purpose

Terminal

Terminal

FM

IF

Sweep

Generator

and

Generator

Output

Tuning

Gang

fully

counter-

Adjust

for

scope

Pattern

with

specified

EMGIE

oscilloscope

or

Probe

“A”

clockwise

marker

(10.7MHz)

as

FM

IF

genescope

(Lowest

Fre.)

illustrated

in

Fig.

7

&

8

(note

2,

3)

FM

SSG

87MHz

Ant.

Speaker

Generator

Tuning

Gang

Adjust

for

maximum

(400Hz

22.5kHz

Input

Output

Output

fully

counter-

gain.

Deviation)

and

|

Terminal

Probe

‘‘B’’

clock

wise

FM

VTVM

(Lowest

fre.)

2

ee

FM

SSG

109MHz

Ant.

Speaker

Generator

Tuning

Gang

(400Hz,

22.5kHz

Input

Output Output

fully

clockwise

Adjust

for

maximum

Deviation)

and

Terminal

Probe

‘’B’’

(Highest

fre.)

gain.

VTVM

Repeat

the

above

item

2-(a),

(b)

for

minimum

change.

FM

SSG

9OMHz

(400Hz,

Input

Output

22.5kHz

Deviation)

and

VTVM

Terminal

Terminal

FM

SSG

Ant.

Sepaker

fo

3

FM

Tracking

(400Hz,

22.5kHz

Repeat

the

above

item

3-(a),

(b)

for

minimum

change.

Ant.

Generator

Output

Probe

‘’B”’

Speaker

Tune

to

signal

4

Adjust

for

maximum

gain.

Generator

Output

Probe

‘’B”’

Adjust

for

maximum

Tune

to

signal

TC2

gain,

106MHz

Input

Output

Terminal

Terminal

Deviation)

and

VTVM

FM

Multiplex

Alignment

Frequency

counter

should

read

19

kHz

+

0.1

kHz

RV1

(10K-B)

(+)

freq.

counter

hig.

A

at

lit

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8

4:

as

S03

OTA

Sha

Bk

Patan

rong

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ot

geo

Si

:

RAGS

RLS

oy

rag

.

a

Note

1.:

Adjust

T4,

T5

and

T6

to

get

maximum

gain

and

symmetry

in

IF

response

as

shown

in

Fig.

5.

7

|

(a)

JX

uN

IF

response

for

weak

input

signal

IF

response

for

strong

input

signal

After

adjust

IF

response

for

weak

input

signal,

supply

strong

input

signal

and

also

adjust

T4,

T5

and

T6

to

makepart

(a)

flat

as

shown

in

Fig.

6.

Note

2.:

Adjust

output

of

sweep

generator

so

that

noise

appears

on

|F-curve

as

shown

in

Fig.

7

below

and

adjust

T1

and

T2

for

maximum

indication.

|

Note

3.:

Adjust

T3

to

be

|F-curve

into

S-curve

(See

Fig.

8)

and

adjust

T3

so

that

declined

part

of

S-curve

has

to

be

just

linear.

If

ceramic

filter

is

used

in

RF

part,

adjust

T3

so

that

part

(A)

and

part

(B)

are

symmetrical

on

either

side

of

vertical

line,

because

the

marker

of

10.7MHz

on

sweep

generator

is

not

on

the

center

of

S-curve.

Fig.

7

Fig.

8

PROBE

“A”

iueaieteetetnbetetetnaetetentententete

|

PROBE

''B”’

|

CG

eae

et

OE

Gey

eng

ne

ea

ee

ee

it

aa

ie

a

ee

al

Rg:

FM

SSG

Output

Ri:

75-9

2