Technics Sa-gx230 User manual

()

AV

Control

Stereo

Receiver

Service

Manual

ORDER

NO.

AD9206177C2

Receiver

SA-GX230

Colour

Area

SPECIFICATIONS

(DIN

45

500)

lI

AMPLIFIER

SECTION

Power

output

DIN

1

kHz

(T.H.D.

1%)

2x80

W

(4 Q)

40

Hz~20

kHz

continuous

power

output

both

channels

driven

2x50

М

(80)

Total

harmonic

distortion.

rated

power

at

40

Hz~20

kHz

-

:

0.5%

(8

О)

half

power

at

1

kHz

Intermodulation

distortion

rated

power

at

60

Hz:

7

kHz—4:1,

SMPTE

Power

bandwidth

both

channels

driven,

—3

dB

0.5%

(8

О)

10

Н2--40

kHz

(8

О)

Damping

factor

40

(8

Q)

Input

sensitivity

and

Impedance

:

PHONO

3

mV/47

КО

CD,

VCR

1

200

mV/22

КО

.

VCR2,

TAPE

.

200

mV/22

kQ

PHONO

maximum

input

voltage

(1

kHz,

AMS):

150

mV

S/N

at

rated

power

(8

©)

.

70

dB

(ІНЕ,

А:

80

dB)

РНОМО

CD,

VCR

1

80

dB

(IHF,

A:90

dB)

VCR

2,

TAPE

80

dB

(IHF,

A:90

dB)

Frequency

response

|

РНОМО

RIAA

standard

curve

|

+0.8

dB

(30

Hz~15

kHz)

CD,

VCR

1

10

Hz~40

kHz

(+3

dB)

VCR

2,

TAPE

10

Hz~40

kHz

(+3

dB)

Tone

controls

|

Bass

.

50

Hz,

+10

dB—

—10

dB

Treble

20

kHz,

+10

dB—

—

10

dB

Loudness

control

(volume

at

—30

dB)

50

Hz,

+9

dB

Output

voltage

VCR

1

OUT

200

mV

TAPE

REC

(OUT)

200

mV

Channel

balance,

250

Hz~6.3

kHz

+1

dB

Channel

separation

-

.

55

dB

Headphones

output

level

and

impedance

430

mV/330

Q

Load

impedance

40-160

80—16

Q

А

ог

В

А

апа

В

Technics

0.03%

(8

Q)

.

Suffix

for

E

ж

(ЕС)

Germany

and

Italy.

(К)

(5)

ll

FM

TUNER

SECTION

Frequency

range

Sensitivity

SIN

30

dB

.1.5

uV

(75

Q)

SIN

26

dB

1.3шУ

(75

О)

SIN

20

ав

_

|

1.2uV

(75

О)

IHF

usable

sensitivity

1.5

uV

(IHF'58,

75

О)

ІНЕ

46

dB

stereo

quieting

sensitivity

.

22

uV/75

О

Total

harmonic

distortion

MONO

.

0.2%

STEREO

|

0.3%

S/N

m

;

cd

MONO

60

dB

(75

dB,

IHF)

STEREO

58

dB

(71

dB,

IHF)

Frequency

response

20

Hz~15

kHz,

+1

dB—

—2

dB

Alternate

channel

selectivity

i

87.50~108.00

MHz

-

+400

kHz

65

dB

-

Capture

ratio

1.0

dB

Image

rejection

at

98

MHz

40

dB

IF

rejection

at

98

MHz

70

dB

Spurious

response

rejection

at

98

MHz

70

dB

AM

suppression

50

dB

Stereo

separation

_1kHz

-—

40

dB

Carrier

leak

19

kHz

—55

dB

(—60

dB,

IHF)

38

kHz

—50

dB

(—55

ав,

ІНЕ)

Channel

balance

(250

Н2--6.3

06

+

1.5

ав

Limiting

point

1.2

uV

Bandwidth

IF

amplifier

180

kHz

FM

demodulator

1000

kHz

Antenna

terminals

75

О

(unbalanced)

SA-GX230

|

ШАМ

TUNER

SECTION

Ш

GENERAL

For

(E/EB)

areas.

Power

consumption

|

260

М

Frequency

range

du

4

Power

supply

MW

522

kHz--1611

kHz

(9-kHz

steps)

For

(E,

EB)

areas.

AC

50

Hz/60

Hz,

230

V/240

V

‚

530

kHz—1620

kHz

(10-kHz

steps)

For

(EG)

area.

КЕ

АС

50

Н2/60

Hz,

230

V

LW

144

kHz~288

kHz

Dimensions

(W

x

H

x

D)

430

x

125

x

305

mm

Sensitivity

(S/N

20

dB)

|

Weight

7

kg

MW

бо

20

uV,

330

uV/m

|

LW

45

ыу

Selectivity

(--9

kHz)

:

Ш

REMOTE

CONTROL

TRANSMITTER

MW

(at

999

kHz)

:

55

dB

|

LW

(at

252

kHz)

55

dB

Control

keys

32

keys

Image

rejection

-

Dimensions

(W

x

H

x

D)

70х27х

175

mm

MW

(at

999

kHz)

и.

40

dB

Weight

(including

batteris)

1254

LW

(at

252

kHz)

40

dB

Power

source

Two

UM-4

IF

rejection

|

(Panasonic

ROS/LROS

or

equivalent)

MW

(at

999

kHz)

55

dB

LW

(at

252

kHz)

55

dB

Notes:

For

(EG)

area.

1.

Specifications

are

subject

to

cahnge

without

notice.

Frequency

range

522

КН2--1611

kHz

(9-kHz-Schritte)

|

Weight

and

dimensions

are

approximate.

530

kHz--1620

kHz

(10-kHz-Schritte)

2.

lota!

harmonic

distortion

is

measured

by

the

digital

spectrum

Selectivity

(S/N

20

ав)

|

20

uV,

330

uV/m

analyzer.

ж.

Selectivity

at

999

kHz

-

55

dB

:

Image

rejection

at

999

kHz

40

dB

тш

IF

rejection

at

999

kHz

55

dB

Ш

CONTENTS

Page

АССЕЗЗОШЕЗ

пиков

ыы

бырына

ым»

2

PRINTED

CIRCUIT

ВОАНВВ...........................................

27--32

ВЕРОВЕ

ОЗЕ

—Ó————

2

WIRING

CONNECTION

ШАСВАМ...................................

33

REAR

PANEL

TERMINALS

AND

FUNCTIONS........................

3,4

TERMINAL

GUIDE

OF

IC’S,

TRANSISTORS

AND

DIODES

.....

34

FRONT

PANEL

CONTROLS

AND

FUNCTIONS

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

5,

6

INTERNAL

CONNECTION

OF

FL

........................---

а.а

35

REMOTE

CONTROL

ОРЕБАТІОЬҺ.......................гг.2л.2.2.444Ү.7Һ/..М..)

7,8

TERMINAL

FUNCTION

OF

IC......................

„нннеее

36

DISASSEMBLY

INSTRUCTIONS

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

eese

9~12

CABINET

PARTS

LOCATION

.....c..ccsssssecsessesessrsseserssssseracssosee

37,

38

MEASUREMENTS

AND

ADJUSTMENT

S......................---

13

REPLACEMENT

PARTS

116Т....................2...1...)ц1

(2.2.2.2.

.

39--42

BLOCK

DIAGRAM,

с-сы

рыны

сынын

14--16

RESISTORS

AND

CAPACITORS

........................---

e

eere.

42--44

SCHEMATIC

DIAGRAM,

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

1...

а

raura

17--26

PACKAGING

peee-————————————

44

Ш

ACCESSORIES

•

АС

power

supply

cord...

1

pc.

•

ЕМ

indoor

antenna

*

AM

loop

antenna

*

AM

anntena

holder

ene

K

(E,

ES]

(RSA0007)

1

pc.

(SPB1163T)

Я

(SMA231M)

n

—

SJA193

(EB)

==

Au

•

Screws

е

Remote-control

transmitter

е

Batteries

e

Attachment

plug

(XTN3+

10AFZ)

2

pcs.

(RAK-SA302E)

5

(UM-4/RO3)

(SJP9009):

(EB)

only

....

1

pc.

N

for

Remote

control

unit

eS

Ш

BEFORE

USE

|

=

|

wu

Be

sure

to

disconnect

the

mains

cord

before

adjusting

the

Note

that

this

unit

will

be

seriously

damaged

if

this

setting

is

not

voltage

selector.

made

correctly.

Use

a

flat-tip

(—)

screwdriver

to

set

the

voltage

selector

(on

the

rear

panel)

to

the

voltage

setting

for

the

area

in

which

the

unit

will

be

used.

|

SA-GX230

Ш

REAR

PANEL

TERMINALS

AND

FUNCTIONS

5

Ѕіегео

connection

doble

_

©

“TAPE”

terminals

„^

.

...

Ф

Cooling

fan

(not

included)

Connect

a

tape

deck.

The

cooing

fan

operates

at

i

output

power

levels

only.

Caution:

White

(L)

Do

not

place

books,

etc.,

on

top

of

this

unit

so

that

the

heat

radiation

vents

remain

unblocked.

Red

(R)

бла)

са

.

This

unit

TAPE.

|

ет

PLAY

(IN)

Speaker

connection

terminals

(D(

(AD

Stereo

connection

cables

=

"E

|

(not

included)

` |

|

(9)

Voltage

selector(VOLT

ADJ):

for

(Е,

EB)

areas

|

~-

Set

the

voltage

selector

to

the

voltage

setting

for

the

area

іп

(R(D

dR

|

which

the

unit

will

be

used.

Tape

deck

|

2

[Use

a

minus

(-)

screwdriver]

(not

included)

3

е

LINE

IN

LINE

OUT

This

unit

©

Remote

control

OUT

terminal

| |

Note:

|

| |

l

(REMOTE

CONTROL

OUT)

|

Note

that

this

unit

will

be

seriously

d

т .

-

»

| |

у

amaged

if

this

setting

is

not

(D

Antenna

connection

terminals

_

@

“VCR

1"

terminals

.

ща

This

terminal

can

be

used

only

with

Technics

components

made

correctly.

Connect

a

VCR.

А

which

have

the

appropriate

remote

control

terminal.

| ;

(See

the

operating

instructions

of

the

VCR.)

|

(Consult

your

dealer

for

details.)

(2)

“PHONO”

terminals

|

Proper

connection

with

remote

control

connection

cables

Connect

a

йай

odi

Do

not

йе

ыл

This

unit

SJP2257T

will

allow

conirol

of

some

functions

from

this

|

у.

у

|

unit’s

remote

control

transmitter.

(See

pages

7—8

for

“VIDEO

OUT”

terminal

source

to

these

terminals.

ai

:

;

details.)

Connect

a

video

connection

cable

(not

included)

to

the

video

cope

input

terminal

of

the

nem

connected

to

the

"VCR

1”

ter-

@

_

This

unit

mR)

во

Connect

to

a

tape

deck

and/or

compact

disc

player

as

shown

minals.

|

-

||

below.

.

57

When

this

connection

is

made,

tape-to-tape

recording

(audio

|

ыгы

|

:

ae

|

and

video)

can

be

carried

out

simply

by

connecting

a

video

Stereo

connection-|.—

,

=

|

If

аре

deck

is

not

being

used,

the

compact

disc

player

сап

camera

or

second

VCR

(for

playback)

to

the

“VCR

2”

ter-

cables

|

be

connected

directly

(dotted

line).

|

minals

of

this

unit.

Е

|

p

(not

included)

Stereo

connection

:

Ground

wire

cable

(not

included)

(not

included)

"9D

OR

2%.

T

VCR

This

unit

This

unit

(not

REMOTE

`

|

d

>

a

:

©

-

included)

AUDIO

puno

Ọ

VIDEO

OUT

Connection

cable

for

remote

control

-

(Included

with

tape

‘Video

connection

cable

(not

included)

Turntable

(not

included)

OUTPUTOÓ

©

|

Video

connection

-

cable

%

l

4

Ту

(not

included)

Tape

deck

|

(not.

included)

(not

included)

|

@

“CD”

terminals

|

Connect

a

compact

disc

player.

VCR

Connection

cable

|

(not

included)

‚

©

VIDEO

IN

for

remote

control

(Included

with

compact

disc

player)

This

unit

f

i

t

!

1

I

І

Ц

V

Compact

disc

player

(Т)

ЭК

(not

included)

REMOTE

Stereo

connection

—

cable

(1)

AC

IN

socket

(AC

IN)

(not

included)

Note:

|

Рог

а

compact

disc

player

with

a

remote

control

sensor

the

e

compactat

г

2”

а

4

|

2

24

above

connection

is

not

necessary.

h

player

Í

Е

|

-

2.

|

(not

included)

=

3

“=

=

TM

4

—

|

SA-GX230

|

Ш

FRONT

PANEL

CONTROLS

AND

FUNCTIONS

Tuner

section

(D

(2)

CJARIZ

LOCK

MEMORY

Е

sr

MUTING

cuc

28

1000455

(D

Power

“

©

STANDBYI/ON”

switch

(POWER,

(2

ЗТАМОВУ/ОМ)

This

switch

switches

ON

and

OFF

the

secondary

circuit

power

only.

The

unit

is

in

the

“standby”

condition

when

this

switch

is

set

to

the

Ф

STANDBY

position.

Regardless

of

the

switch

setting,

the

primary

circuit

is

always

“live”

as

long

as

the

power

cord

is

connected

to

an

electrical

outlet.

Remote

control

signal

receptor

(REMOTE

SENSOR)

:

|

Receives

the

signals

from

the

remote

control.

“STANDBY”

indicator

(STANDBY)

This

indicator

illuminates

when

the

"STANDBY"

mode

is

set

by

the

main

unit

or

the

remote

control

transmitter.

Channel

display

This

display

shows

the

channel

number

selected

by

one

of

the

preset-tuning

buttons.

Also

this

display

shows

the

channel

number

for

about

3

seconds

during

memory

scan

operation.

Quartz-lock

indicator

(QUARTZ

LOCK)

This

indicator

illuminates

when

the

unit

is

tuned

precisely

to

a

broadcast

station.

(6

Memory

indicator

(MEMORY)

This

indicator

illuminates

when

the

memory

button

is

press-

ed.

@

FM

stereo

indicator

(FM

ST)

This

indicator

automatically

illuminates

when

an

FM

stereo

broadcast

is

being

received.

Note:

It

will

not

illuminate

if

the

FM

mode

selector

is

set

to

the

monaural

mode.

Memory

scan

indicator

(M.

SCAN)

This

indicator

illuminates

when

the

memory

scan

button

is

pressed.

FM

$400€

N

LOUONESS

BALANCE

AUTO:MONO

«

“он

LEFT

—

AGHT

УСО

—

L

AUDIO

Ч

A—VCA2

\

Ғе

үз

ees

—

|іог

(EG)

area

|

|"

me

|

(8) 16)

а

MERECE

NNUS

4

Band

indicators

(FM,

LW,

MW):

for

(E,

EB)

areas

(FM,

AM)

Indicates

the

selected

band.

:

for

(EG)

area

Input

selector/frequency

display

(INPUT

SELECTOR/FREQUENCY)

Displays

the

selected

source

or

broadcast

frequency.

.

Memory

scan

button

(MEMORY

SCAN)

This

button

is

used

to

locate

a

desired

broadcast

station;

each

broadcast

station

is

selected

for

about

3

seconds.

Tuning

buttons

(TUNING)

These

buttons

are

used

for

tuning

to

the

desired

broadcast

station.

Memory

button

(MEMORY)

This

button

is

used

when

presetting

broadcast

station

fre-

quencies

into

memory.

Preset-tuning

buttons

(1—0)

(30

CHANNEL

RANDOM

PRESET

TUNING)

These

buttons

are

used

to

preset

broadcast

frequencies

into

the

memory

of

this

unit

and

to

recall

the

desired

то

sta-

tions.

Band

selectors

(FM,

LW,

MW):

for

(E,

EB)

areas

(FM,

AM)

:

for

(EG)

area

FM:

Press

this

button

to

listen

to

an

FM

broadcast.

LW:

Press

this

button

to

listen

to

an

LW

broadcast.

MW

(E,

EB)/AM

(EG):

Press

this

button

to

listen

to

an

MW/AM

broadcast.

ALLOCATION:

When

the

MW/AM

button

is

pressed

for

about

3

seconds,

the

MW

frequency

step

will

change

to

10

kHz

per

set.

(This

step

is

set

to

9

kHz

before

shipment.)

In

order

to

return

to

the

original

frequency

indication,

press

this

button

for

about

3

seconds

again.

FM

mode

selector

(FM

MODE)

This

unit

automatically

switches

to

the

stereo

mode

when

an

FM

stereo

broadcast

is

received.

This

selector

is

used

to

select

the

mode

(stereo

or

monaural)

of

FM

broadcast

signals.

----

3

Amplifier

section

.

for

(EG)

area

(D

Speaker

selectors

(SPEAKERS)

These

selectors

are

used

to

select

the

speaker

system(s)

(A

and/or

B).

Muting

indicator

(MUTING)

This

indicator

will

illuminate

when

the

muting

button

(on

the

remote

control

transmitter)

is

pressed.

Loudness

indicator

(LOUDNESS)

This

indicator

will

illuminate

when

the

loudness

button

is

pressed.

@

Tape

indicator

(

)

This

indicator

will

illuminate

when

the

tape-monitor

button

is

pressed.

:

|

©

Volume

control

(VOLUME)

Tone

controls

(BASS,

TREBLE)

The

bass

control

is

used

to

adjust

the

low-frequency

sound

range,

and

the

treble

control

is

used

to

adjust

the

high-fre-

quency

sound

range.

(D

Headphones

jack

(PHONES)

Input

selector

buttons

These

buttons

are

used

to

select

the

sound

source

to

be

heard,

such

as

a

disc,

radio

broadcasts,

etc.

The

selected

sound

source

is

shown

on

the

input

selector/frequency

display.

The

“PHONO”

input

selector

has

two

functions:

when

press-

ed

momentarily

it

selects

“PHONO”.

When

pressed

and

held

for

about

4

seconds,

it

de-activates

the

muting

function.

=

TONE

CONTROL.

TREBLE

loo

(9

Tape-monitor

button

(TAPE

MONITOR)

Press

this

button

to

listen

to

a

tape.

To

listen

to

some

other

source,

press

this

button

once

again

(so

that

the

indicator

is

switched

OFF).

Loudness

button

(LOUDNESS)

Set

to

the

“ON”

position

(the

loudness

indicator

will

il-

luminate);

when

listening

to

music

at

low

volume.

Auditory

perception

of

sound

in

the

low

frequency

range

falls

off

at

low

volume,

but

when

the

switch

is

in

this

position,

this

defi-

ciency

is

compensated

for,

so

that

the

full

impact

of

tha

musical

performance

can

be

enjoyed.

й)

Balance

control

(BALANCE)

(2

“VCR

2”

terminals

(VCR

2)

These

terminals

are

used

for

tape-to-

-tape

recording

if

a

se-

cond

VCR

is

connected

here.

Ш

REMOTE

CONTROL

OPERATION

*

This

remote

control

transmitter

can

be

used

for

control

of

a

Technics

cassette

tape

deck

or

a

compact

disc

player

with

a

remote

control

terminal.

Consult

your

dealer

for

details.

e

For

detailed

information

concerning

operation

steps,

etc.,

please

refer

to

the

appropriate

page

for

each

unit

and

the

respective

operating

instructions.

®

For

this

system,

you

can

listen

to

tapes

or

compact

discs,

etc.,

by

operating

the

remote

control

transmitter

without

using

this

unit's

input

selectors.

-

*

Make

sure

that

the

power

of

each

unit

is

set

to

the

"ON"

posi-

tion,

before

beginning

the

operations.

.

Facing

toward

the

main

unit

TUNER

CD

Bias

E

1

5

ЕСЕН

с»

BE

REMOTE

CONTROL

TRANSMITTER

AUDIO

RAK-SA302E

Technics

|

SA-GX230

[A][Tunercontrols

^

1—

|

Press

this

button

first

to

use

the

"OFF/ON"

button

or

the

[1]

—

[o]

buttons.

This

button

can

be

used

for

ON

and

OFF

switching

of

this

unit.

When

switching

the

power

ON

and

OFF,

be

sure

to

first

press

the

“TUNER”

button.

[1]

—

[0]

Press

these

buttons

to

select

the

desired

preset

channel.

When

these

buttons

are

used,

be

sure

to

first

press

the

"TUNER"

button.

To

designate

channels

1—9:

Press

the

appropriate

(1—9)

preset-tuning

button.

Note:

When

selecting

channel

1,

2

or

3

enter

the

selection

"O1",

“02”

or

“03”.

If

only

“1”,

"2"

or

"3"

is

pressed,

channel

access

will

be

delayed

by

two

seconds.

To

designate

channels

10—30:

(D

Press

the

button

for

the

“tens”

digit

(1,

2

or

3).

@

Press

the

button

for

the

"units"

digit

(1-0)

within

2

seconds

after

pressing

the

first

button.

Note:

If

the

interval

between

pressing

the

first

button

and

pressing

the

second

button

is

more

than

about

2

seconds,

the

setting

may

not

be

made

correctly.

n

this

Шы

make

the

setting

once

again.

[B]

[Tape

deck

controls

(

Tape

deck

controls

|

Press

this

button

to

select

the

deck

("DECK

1”

or

"DECK

2")

to

be

controlled.

Press

this

button

to

change

to

the

recording

stand-by

mode.

[<<], [>>].

Press

one

of

these

buttons

to.

advance.

or

rewind

the

tape

while

the

unit

is

in

the

stop

mode.

Press

one

of

these

buttons

to

select

the

desired

tune

while

the

unit

is

in

the

play

mode.

(Only

applicable

to

a

Technics

tape

deck

with

the

“music

select”

functions.)

Press

this

button

to

temporarily

stop

playback

or

recording.

Press

the

playback

button

to

resume

the

playback

or

recording.

Press

one

of

these

buttons

to

begin

playback

or

recording,

press-

ing

the

button

corresponding

to

the

side

of

the

tape

to

be

played

back

(or

recorded).

>

:

For

the

“forward

(А)"

side

of

the

tape

«4

:

For

the

“reverse

(В)”

side

of

the

tape

Note:

Depending

on

which

Technics

tape

deck

is

used

in

combination

with

this

unit,

tape

deck

1

might

be

the

"A"-side

playback-only

type.

Press

this

button

to

stop

tape

movement.

Note

Depending

on

which

Technics

tape

deck

is

used

in

combina-

tion

with

this

unit,

the

pause

of

the

playback

(and

the

recor-

ding),

and

the

recording

functions

of

tape

deck

1

might

not

be

possible

by

using

the

remote

control

transmitter.

SA-GX230

|

Compact

disc

player

controls

Press

this

button

first

to

use

the

[1]

—

buttons.

=

|

Press

these

buttons

to

select

the

desired

track.

Playback

begins

from

the

track

selected.

When

these

buttons

are

used,

be

sure

to

first

press

the

"CD"

but-

ton.

Tracks

1—9:

Press

the

appropriate

numeric

button

с

E

à

directly.

To

select

a

two-digit

track

number

over

10:

Press

the

c3

button

the

necessary

number

of

time

to

select

the

"tens"

digit,

and

then

one

of

the

©

—

c

buttons

to

select

the

"units"

digit.

E

If

a

Technics

multi

compact

disc

player

is

used

in

combination

with

this

unit,

the

disc

to

be

played

can

be

selected

by

first

press-

ing

this

button

and

then

pressing

the

appropriate

numeric

button

ТҮРЕН

Press

this

button

to

select

the

desired

play

made.

(“РВООНАМ”

or

"CONTINUE")

Press

one

of

these

buttons

briefly

to

move

the

pick-up

to

the

-—

Е

beginning

of

а

specific

track.

TUNER

.

|

co

2

os

EZ] СС)

[>

PLAY]

2

3

5

Facing

toward

the

main

unit

Dv

:

ress

this

button

to

start

play.

Press

this

button

to

stop

play.

PROGRAM

MODE

Note:

ею

C2

E

When

operating

a

compact

disc

player

with

a

remote

control

sen-

sor,

face

this

remote

contro!

transmitter

toward

the

remote

con-

trol

sensor

of

the

compact

disc

player.

заь.

:

REMOTE

CONTROL

TRANSMITTER

AUDIO

RAK-SA302E

Technics

[р]

Amplifier

controls

Press

this

button

to

select

the

“VCR

1”

input

selector

on

the

main

unit.

Press

this

button

to

temporarily

reduce

the

volume

level.

—

The

volume

level

is

attenuated

by

20

dB

(approx.

1/10).

TE

Press

once

again

to

return

to

the

level.

Press

one

of

these

buttons

to

adjust

the

volume

level.

—

8

—

|

SA-GX230

Ш

DISASSEMBLY

INSTRUCTIONS

“ATTENTION

SERVICER”

|

e

Some

chassis

components

may

have

sharp

edges.

Ве

careful

when

disassembling

and

servicing.

|

ҚАЙ

Removal

of

the

cabinet

Neat

Removal

of

the

front

panel

ass’y

Procedure

|

[m]

1.

Remove

the

2

flat

cables

(CN401,

CN601).-

Front

panel

ass’y

Speaker

switch

/

Headphones

jack

B

2.

Remove

the

3

screws

(0

—

9).

3.

Remove

the

front

panel

ass'y

in

the

direction

of

arrow.

:

How

to

remove

the

flat

cable

1.

Lift

up

the

connector.

2.

Pull

out

the

flat

cable.

Flat

cable

|

E

Connector

[А

-

Procedure

1524

Tone

control

knobs

Balance

knob

1.

Remove

the

2

tone

control

knobs

and

a

balance

2.

Remove

the

5

screws

(Q

—

©).

knob.

|

SA-GX230

|

ЖЕЕ

Removal

of

the

volume

P.C.B.

27

Removal

of

the

FL

drive

P.C.B.

Procedure

Volume

knob

Procedure

|

12525

15256

e

FL

Drive

PC.B.

.

Pull

out

the

volume

knob.

.

Remove

the

nut.

.

Remove

the

1

screw

(@).

1.

Remove

the

5

screws

(Q

—

©).

.

Remove

the

volume

P.C.B.

in

the

direction

of

arrow.

2.

Remove

the

FL

drive

P.C.B.

in

the

direction

of

arrow.

P

m

Ref.

No.

Removal

of

the

power

switch

P.C.B.

Ref.

No.

wW

and

Operation

P.C.B.

Removal

of

the

VCR2

P.C.B.

Procedure

12256

|

1228

Power

switch

P

C.B.

|

е

Remove

the

13

screws

(@

—

Ф).

е

Remove

the

2

screws

(@,

Ө).

|

эчи

T

Removal

of

the

rear

panel

i

ou

Removal

of

the

tuner

P.C.B.

Procedure

1-9

Rear

panel

19-10

1.

Remove

the

13

screws

(Q

—

Ф).

2.

Remove

the

1

connector

(CN651).

1.

Release

the

1

claw.

3.

Remove

the

rear

panel

ín

the

direction

of

arrow.

2.

Remove

the

tuner

P.C.B.

in

the

direction

of

arrow.

SA-GX230-

Ш

MEASUREMENTS

AND

ADJUSTMENTS

Note:

For

2201/2251

(AM

(MW/LW)

ANT

and

OSC

coil),

7202

(AM

(MWILWMIFT),

they

are

supplied

as

adjusted

parts.

|

So,

do

not

turn

the

cores

of

the

parts.

Н

is

not

necessary

to

adjust

the

AM

(MW/LW)

circuit.

*

FM

ADJUSTMENT

Control

positions

and

equipment

used

*

FM

signal

generator

(FM-SG).

*

Frequency

counter

*

Distortion

analyser

•

Choke

coil

(100pH)

*

DC

electronic

voltmeter

(DC

EVM)

*

Resistor

(100

kQ)

.

Remove

the

motor

cover

by

used

©

screwdriver.

(Refer

to

Fig.

3)

4.

Remove

the

motor

from,

the

fancasing.

Ref.

No.

Removal

of

the

power

supply

P.C.B.

ner

NO;

Removal

of

the

power

transformer

ner

No:

Removal

of

the

cooling

fan

motor

11

12

(main)

16

Procedure

o

12911

1911412

1->9->16

(Refer

to

Fig.

4)

5.

When

mounting

the

motor

fan,

align

the

fan

1.

Release

the

3

claws

in

the

direction

of

arrow

and

casing’s

projection

with

the

hole

of.the

fan

motor.

remove

the fan

motor.

(Refer

to

Fig.

1)

|

2.

Insert

a

screwdriver

at

the

root

of

the

cooling

fan.

Force

it

out

of

the

motor

shaft.

(Refer

to

Fig.

2)

transformer

Cooling"

fari

(main)

FM

MONO

DISTORTION

ADJUSTMENT

FM

SIGNAL

GENERATOR

CONDITION

.

Test

equipment

connection

is

shown

in

figure.

Modulation

.

Set

the

unit

to

“FM”

position.

.

Set

the

radio

frequency

display

and

signal

generator

to

100.10

MHz.

|

о

T

.

Adjust

Т201

core

so

that

voltage

measured

in

signal

mode

is

OmV

(0+20mV)

in

300mV

range.

.

Adjust

T202

so

that

the

distortion

factor

of

Lch

is

minimized.

.

EM

ET

.

Repeat

step

4

and

5a

few

times.

—

.

Make

sure

that

the

distortion

factors

of

Lch

and

Rch

are

nearly

the

same

with

each

other

to

minimum.

Power,

supply

PC.

B.

1.

Remove

the

1

screw

(@).

|

2.

Remove

the

1

flat

cable

(CN702).

3,

Remove

the

power

supply

P.C.B.

in

the

direction

of

arrow.

2

Ұй

|

Қай

Removal

of

the

regulator

transistor

|

Procedure

1-2-13

Remove

the

2

screws

(Ф,

Ө).

Remove

the

2

transistor

holders.

Lift

up

the

connector

in

the

direction

of

arrow

(D.

Remove

the

regulator

transistor

in

the

direction

of

arrow

©).

Note:

Ref

№.

|

Check

of

the

main

P.C.B.

Procedure

|

swhen

checking

the

soldered

sur-

1—17

faces

of

main

P.C.B.

and

replacing

—

.

о

o

the

parts,

do

as

show.

X

f

Front

panei

аѕѕ?у

The

adjusting

screwdriver

used.

should

be

made

of

resin.

|

емей

ай

=

FM

MPX

VCO

ADJUSTMENT

FM

SIGNAL

GENERATOR

CONDITION

.

Test

equipment

connection

is

shown

in

figure.

Modulation

.

Set

the

unit

to

"FM

auto"

position.

|

.

Set

the

radio

frequency

display

and

signal

generator

ÉREGUENEY

to

100.10

MHz.

QU

ENNA

COUNTER

.

Adjust

VR301

for

19.00+0.03kHz

on

frequency

counter

reading.

—

.

> 3 i

па

й

зі

:

|

X

USING

ALTERNATE

SYSTEM

1.

Apply

stereo

signa!

from

generator

or

receive

the

stereo

broadcast.

|

2.

Adjust

VR301

until

stereo

indicator

lights

up.

%

-

®

—

©

:

Stereo

OFF

Cement

arm

of

VR301

as

shown

in

figure.

*

When

mounting

the

regulator

transistor.

Apply

silicone

thermal

compound

(RFKX0002

or

equivalent)

to

the

rear

of

the

regulator

transistor.

Removal

of

the

main

P.C.B.

LET

Removal

of

the

power

IC

|

Procedure

125259

152—910

position

-

©

:

Stereo

ON

positlon

|

(indicator

lighting)

|

©:

Adjust

point

of

Pilot

circult

1.

Remove

the

3

screws

(Ф--Ө).

Rear

panel

*

Adjustment

points

a.

а

Please

refer

to

tuner

P.C.B.

on

pages

27,

28.

TH

Teel

a

UEM

SD

SM

GNO

E

44%

Y

—

[——

750.

Unsolder

the

power

IC

FM

ANT

?

"

‚

1.

Remove

the

2

screws

(Ф,

Ө):

|

@

‚2.

Unsolder

the

power

IC.

BALANCED

TUNER

P.C.B.

Front

panel

ass!y

¢

When

mounting

the

power

IC.

1.

Remove

the

1

flat

cable

(CN702).

^A

Apply

silicone

thermal

compound

.

(RFKX0002

ог

2.

Remove

the

6

screws

(Q

—

OQ).

|

equivalent)

to

the

rear

of

the

power

IC.

3.

Remove

the

6

screws

(D—().

—

5.

Remove

the'chassis

ass’y.

4.

Remove

the

rear

panel

іп

the

direction

of

arrow..

6.

Reinstall

the

front

panel ass’y

to

the

main

P.C.B.

FM

offset!

FM

МОНО

coll

OISTORTION

сон

—Hh-

|

—12—

|

ue

n

—

13—

[129]

[1202]

d

|

‚

|

T

|

i

'

|

!

|

SA-GX230

|

SA-GX230

B

BLOCK

DIAGRAM

|

AM6558F

FM

MONO

DISTORTION

ад]

D

TP201

TP202/

ra0),200

sl

PHONO

EQUALIZER

AMP

Jj

Js

TC9163N

SA

ESIN

C]

Г]

T°

F

ТЕ

301

R314,

:

—

Qe

a—

na

(C

жекен

401

a

b

E

ji

SD

|

ЕМ

MPX

ыы

ЕШ

Г

1

ECTOR

Ex

FM

FRONT

END

серді

CF202

148

э

Де

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Ue

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_____

ANT2T3A

|

INPUT

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MOTOR

DRIVE

(VOLUME)

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|

r^

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Vcc

71

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FM

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AM/FM

IF

А

:

ед

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|

ТІК

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=

|

AMP,DET

&

AM

MIXER

Бе

—————

cre

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Fe

|

1-52

|

E

|

со.

|

ger

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8)

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FM/AM

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FILTER

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BUFFER

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list

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pages

40—44.)

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EB)

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use

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supply

part

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the

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list.

|

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Part

No.

|

Supply

Part

No.

IC301

AN7470

SVIUPC1161C3

2891

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АСОНС-677

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Caution!

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and

LSI

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sensitive

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static

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`

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can

be

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taking

care

during

repair.

| |

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Cover

the

parts

boxes

made

of

plastics

with

alminum

|

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4

|

x

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the

soldering

iron.

|

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a

conductive

mat

on

the

work

table.

—

0

*

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not

touch

the

legs

of

IC

or

LSI

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the

fingers

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directly.

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ка

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SA-GX230

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11

SA-GX230

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13

14

15 16

17

18 19

20

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PARTS

LIST

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CABINET

PARTS

LOCATION

26

Notes:

‘important

safety

notice:

Components

identified

by

A

mark

have

special

characteristics

important

for

safety,

Furthermore,

special

parts

which

have

purposes

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fire-retardant

(resistors),

high-quakty

sound

(capacitors),

low-noise

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гв),

etc.

are

used,

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any

of

components,

be

sure

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use

onty

manufacturer's

specified

parts

shown

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parts

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the

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cover

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all

areas.

Part

Name

&

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“Remote

Control

Ass'y:

Supply

period

for

three

years

from

termination

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|

Part

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|

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&

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Name

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CN202A

——

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(ТР)

SERERE!

CHAOLA

RJS1A1703

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5917

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SW,

INPUT

SELECT,

TUNER

JK401

SJF3069N

PHONO,

CD

TERMINAL

mu

aioe

ит

|

UCD

т

осел

ЫАТА

A

T701

RTPINSBOIS-W

|PORER

TRANSFORMER

(MAIN)

А

[E751

|

|RTPIISEQ03-V

[PONER

TRANSFORMER

(SUB)

C

жшлш

—

|

592]

EVQ21405R

|99,

INPUT

SELECT.

VCR2

aaa

$922

уйй

|94,

INPUT

SELECT,

VCRI

Sn

ими

китэ

—

|

——

_

promo.

co

mea

хш;

Беш

jen

ан

|

ШІ

ae

ШМ

|5015

[VIDEO

TERMINAL

JK405

—

|SJFK5-1

——

|VCR2

TERMINAL

HE

ШШШ

ОТИТ;

с!

Ref.

No.

Part

No,

Part

Name

&

Description

Remarks

Ref.

No.

Part

No.

Part

Name

&

Description

Remarks

JK409

RJJ33TROL

[REMOTE

CONTROL

OUT

>

||?

[#Л805220Ю@

|FLAT

CABLE

(SP)

г

тт

м

PIA

fa

MAHLER

Өт

ем

[8.780054

SPEAKER

CONNECT

ТЕН.

A

RWJ1803080KK

{FLAT

CABLE

(ӘР)

2

moo

[SPEAKER

CONNECT

TERB

|

|н?

==‘

RRUBQBOROKG

|

FLAT

CABLE

BP)

р

ел.

it

ив

—

pe

mis

Е

—

Е

GHD

DI

ATF

СУ

чин

Pui

АЈА

W401

RHJ1806140KQ

{FLAT

CABLE

(6P)

інв:

{RHJ1810340KQ

|FLAT

CABLE(10P)

ноот

|Е#1825200ЖК

[FLAT

CABLE

(SP)

bm

[шш

perm

_

Бі ms

тю

5

à

prom

E402

Notes

:

+

Capacity

values

are

in

microfarads

(uF)

unless

specified

otherwise,

P=Pico-farads

(pF)

F-Farads(F)

+

Resistance

values

are

in

ohms,

unless

specified

otherwise,

1K-1,

000

(OHM)

,

1W=1,000k(OHM)

Ref.

No.

Part

No.

Values

&

Remarks

|

Ref.

No.

|

Part

No.

|

Values

&

Remarks

|

Ref.

No.

Part

No.

Values

&

Remarks

|

ERDS2TJ583

f

1/48

—

56K

-

R218

ERDSZU/102

|144

к

(EEB)

#29

[6805214223

R202

—

[8805217332

|

1/4W

3.3K

(ЕВ

|R220

JERDS2TJ103

|144

—

10K

R221

ERDS2TJi04

]/4W

100K

R264

ERDS2TJ

102

1/48

IK

(E

EB)

тели”

[V

a

Rm

[жый

[wm

aK

|

8224

FRDS?T

1773

1/44

22K

1

/АШ

150

шағыны

азу

са

L1

тучи

ERDS2TJ103

]/AM

10K

R303,

304

—

|

ERDS2TJ223

]/4W

22

ша

ди

[va

x

_

"m

11nn

J

275103

3

LU

ШУП

104

ERDS2TJ102

R106

ERDS2TJS62

1/4¥

5.6K

R107

ERDS2TJ103

1/4WN

.

10K

1/4N

100

(Е,

ЕВ)

1/48

ІК

0

R108

ERDS2TJIS!

|

1/4

150

R229

ERDS2TJ102T

|

ин

—

1K

(EG)

LA

5.6K

8109-01

|ERDSZIJI04

|

1/4#

100K

1/48

100Қ

R201

БЛ?

|148

—

8.2K

ERDS2TJ102

|148

IK

(E

EB)

ERDSZTJIS4T

|

1/8

150K

ŒG)

ий

—

szu

|

vA

лк

R204

ERDS2T4824

|

1/4W

820K

Ro

^

вл

[ia

30

|

Ros

EMI

|144

чё

R207

Е

ERDS2TJ822

1/48

8.

2K

8

ERDS2TJ102

|

1/4

—

1K

9

R233

ERDS2TJE

i

1/48

kx

ши

_

1/44

10K

Ras

етип

|1/Ғ

4%

R23

6

Rs

—

poene

[ун

778

ші”

meum

[ve

ik

Vw

m

314

AIK

£o

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АТК

vi

ЕНЕҢ

ТЛ

[we

ЕЕ.

шелін

тепло

[мк

Ww

|

TEE

Ril

ERDG

215222

1/AN

2.2K

=

Esso

M

10K

(Е.

EB)

(ын

үштігі

Es

8.

2K

|

8212

ERDS2TJ153

1/4€

—

15K

R252

ERDS2TJ822

1]/4€

8.2K

(E,

EB)

R405,

406

—

|ERDS2TJ102

1/49

1K

Ru

елли

|

iw

он

ша”

озш

[ves

ъй

ЕВ

”

T

NY:

R214

[ERDS2TJ824

|

1/48

820

R254

[ERDS2T9223

[н

22K

(E,

EB)

AW

IK

Ris

|

eRDS2TJ153

|

L/4M

15

1255

JERÐS2TJ102

|1/Я

—

1K

№

|

à

сори

8258

eRDS2TI122

[iw

12K

(Ete)

[|294

[кїз

ж

№

o

1

А217

[2805214223

|

1/4"

—

22K

R259

ERDS2TJ223

f

l/4W

—

22K

(BEB)

|]R451,452

!ERDS2TJ391

|

1/4H

3%

-о-

|

ns

ee,

©

жм

e

ч

`-

ш---

à

|

.

Values

&

Remarks

ERDS2TJ103

1/A

ЮК

938

RDS2TJ104

1/489

100K

Ref.

No.

Part

No.

Values

&

Remarks

658

ERDS21J223

ERDS21J222

ERDS2TJ103

ERDS21J333

ERDS2TJ104

ERDS2TJ153

R664,

665

—

|ERDS217103

666

ERDS21J333

R670

/

|ERDSIFVJ3907

671,672

—

|ERDS2TJ471

R673

ERDS2TJ332

|

|/WM

33€

|

687,688

—

|ERDS2TJ102

R689,

690

—

|ERDS2TJ221

701

ERDS1FVJ332T

R702

ERDS2TJ122

n

R704

ERDS21J222

|

V/A

22K

|

R705

ERDS21I2727

R708

ERDS2TJ102

708,708

—

ERDSIFVJI80T

R710

ERDS2TJ272T

R711

ERDS1FJ270

R715

ERDS2TJ103

R716

ERDS2TJ222

R717

ERD25FVJ150T

8718,

719

—

|ERDS2TJ1ROT

R755

ERDS2TJ102

8771

.

|ERDSIFWJ2RT

773

ERDSLFVJ6R8T

R777

ERDS1FJ270

780

ERDSLFVJ4R71

ШІ

iuis

s

R911,

912

—

ERDS2TJ382T

R917,

918

—

ERDS2TJ273

ни

|

cam

R927

UA

180

|

i545

:

m

d

ERDS2TJ182

акло

[we

id

_

|

али

ism.

sn

am

|

т

2

937

59

м4

сл

e:

н>

сл

н>

d

en

сл

н>

c1 <>

29

R660

R661

E

B

=з

ео

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e

B

э

52159)

9

>

|

oe

|

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oi

an|

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<>

|

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нь|ы»|

ы» ©»

|

со

|

on

po]

сз|

&

о

PE

tas

gue

ЕГЕТ

с

C101,

102

ЕСВТІНІ50ЈС5

|

0

C106

50V

0.010

C108

25V

4.10

ПИП

m

m8

mm

cas

215

ECKRIHLO3ZE5

217

|ECEALHKAO10B

|

50V

ШШ

20

os

EUN

301

18V

-1000

C303

ECEAIHKAO10B

|

50V

1

C304-306

.

|

ECEALHKA3R3B

Gas

ксн

|

zw

ІР

|

C310

25V

0.040

.

311

50V

470P

C313,

314

50V

1000P

DAQQA

к

H

ROL

S

”

Би

к

"

38

xm

WP

(|,

[o

mu

[NEN

Bs

ШАЛ

[XT

R616,

617

1/8

40

A

is

0

Т

R631

LAW

ШК

=

22

E

ca

-

со

гә

bho

со

bo

со

GO

R65?

zo

=2

e

СА]

c

<

со

m

SA-GX230

|

(321

ЕСЕА1СКА100В|

16V

100

C323,324

ECFRIES32KR

|

25V

3300P

C325

ECBT1H330J5

50

Ref.

No.

Part

No.

|

Values

&

Remarks

Ref.

No.

Part

No.

Values

&

Remarks

C697,

698

|ЕСВТІНІ01КВ5

701,707

'ECESHV822UM

bm

[rennon

EET

vus

_—

жении

609,

610

zm

ECAICMLO1B

|

16V

1000

DINE

саз

Бели

ШІ

ЕТ:

ШІ

ШІЛДЕ);

257

0.

100

10

à

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~J

c

an

У

3P

0326

ECKR1H103ZF5

|

50V

0.010

C401,

402

|ECBTIEIO3ZF

25V

0.010

ом

TOOT

22U

jesus

emnes

|

жү

ыш”

C421,

422

|ECEAICKA220B

|

16V

453,

454

50V

100P

|

C457,

458

25V

0.0220

;

ECFRIEG82KR

|

25V

6800P

461,462

|ЕСЕМЕКМЕТВ

ECEA1AKA330B

ECBT1HI50JC5

16V

—

10U

ca

н>

en eo

н>

с>

со

ca

-

сл c»

C651

ECEALHKA2R2B

ЕСКВ1Н1037Ё5

LN

C671,

672

[ЕСВТІНІ80ЈС5

0154

0755

C771

0791

0851,

832

C853,

854

0891

0901

0902

C904,

905

-

ca

ECBT1E103ZF

29V

0.010

ES

єз

=

с)

=>

=

с»

“>

*

ECQE2104KF3

|

250V

0.10.

А

2

6V

ECKWNS1032VS-|

500V

0.01U

Л

>.

ді

ECEAQJU101B

|

6.

3

1000

ECFR1E104KR

5V

0.10

0

473,

474

475,

476

C477,

478

10V

0

ECBT1H101KB5

|

ECBT1H221KB5

ECÈA1CKA100B

ECFR1E392KR

ШШШ

0.

ЕСВТ1Ё1037Ё

10V

ECEA0JU102

6.3V

10000

C479,480

|

RIRI23KR

|

25V

0.0120

C481,

482

—

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23V

0.

0680

.

ECFRIESBZKR

29V

5600P

<

|

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=

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co

ce

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485,486

[ECFRIE273KR

|-

25V

0.0270

887,688

|ECKRIHIO3ZF5

|

50V

0.010

906

ECBTIEI037F

|

25V

0.010

C487,488

—

|ECBTIE1032F

|

25V

0.010

C689,690

|ЕСКТІНІОІКВ

|

507

ШОР

C911,912

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|

100V

100

A

2.

(489-492

(ЕСЕМІСКАІ0ІВ|

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0

||0691,692

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50V

0.010

C913

ECEALHKALOOB

—

C501,

502

|ЕСЕМЕКМЕТВ

|

25V

4.70

C693,

694

{ECBTIH331KB5

|

50V

330P

(E

EB)

||0914

ЕСЕАІНКА1008

|

50V

100

A

`|6503,504

|ECBTIHI01KB5

|

50V

—

100P

693,694

—

|ECKRIH331KBS

|

SOV

3300

(EO)

C818

ЕСЕАІНКАО108

(505,

506

[ECEAIEKAAR7B}

25V

4.70

св95,

696

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PACKAGING

"n

p

ex

Uem.

er

ex

-

|

un

mper

|

A4

|

Batteries

|

(UM-4/R03)

L.

A6-1

|

adi,

че

Printed

in

Japan

-

|

зі

H920609000

NH/YU/TN

Technics SA-GX230 User manual

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