Technics SU-X933 User manual

ORDER

NO.

AD8904097C8

.

Manual

Amplifier

SU-X933

Color

(K)...Black

Type

Area

Country

ee

ae

Service

Digital

Integrated

Amplifier

SPECIFICATIONS

(DIN

45

500)

AMPLIFIER

SECTION

Muting

—20

dB

Super

bass

70

Hz,

O~

+10

dB

DIN

power

output

Output

voltage

1kHz

THD:

1%

2x50

W

(8

Q)

TAPE

REC

OUT

200

mV

Total

harmonic

distortion

Channel

balance,

AUX

250

Hz~-6,300

Hz

+1.0

dB

rated

power

at

1

kHz

1%

(8Q)

Channel

separation,

AUX

1

kHz

55

dB

Harmonic

distortion

Headphones

output

level

and

impedance

473

mV/330

Q

half

power

at

1

kHz

0.03

%

(8Q)

Load

impedance

Residual

hum

and

noise

0.5

mV

MAIN

8N~16Q

Damping

factor

30

(8

Q)

SURROUND

8Q~16N

Input

sensitivity

and

impedance

PHONO

3

mV/47

kQ

TUNER,

AUX,

TAPE

200

mV/22

kQ

i

GENERAL

cD

300

mv/15

kQ

Maximum

input

voltage

(1

kHz,

RMS)

Power

consumption

330

W

PHONO

120

mV

Power

supply

SIN

(rated

power

8

©)

For

Great

Britain

and

New

Zealand

==

AC

50

Hz/60

Hz,

240

V

PHONO

73

dB

(IHF,

A,

79

dB)

For

continental

Europe

AC

50

Hz/60

Hz,

220

V

TUNER,

CD,

AUX,

TAPE

84

dB

(IHF,

A:

83

dB)

For

others

AC

50

Hz/60

Hz,

110

V/127

V/220

V/240

V

Frequency

response

Dimensions

(W

x

H

x

D)

360

x

106.2

x

304

mm

PHONO

RIAA

standard

curve

(14-3/16"

x

4-3/16"

x

12”)

+0.8

dB

(30

Hz~15

kHz)

Weight

5.3

kg

(11.7

Ib.)

TUNER,

CD,

AUX,

TAPE

10

Hz~50

kHz

(—3

dB)

Tone

controls

Notes:

BASS

50

Hz,

+10

dB~—10

dB

1.

Specifications

are

subject

to

change

without

notice.

TREBLE

20

kHz,

+10

dB~—10

dB

Weight

and

dimensions

are

approximate.

2.

Total

harmonic

distortion

is

measured

by

the

digital

spectrum

analyzer.

"Technics

Matsushita

Electric

Industrial

Co.,

Ltd.

,

Central

P.O.

Box

288,

Osaka

530-91,

Japan

a

CONTENTS

Page

SEFORE

REPAIR

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#

BEFORE

REPAIR

(1)

Turn

off

the

power

supply.

Using

a

100,

5

W

resistor

connect

both

ends

of

power

supply

capacitors

(C711,

C712,

3300

UF)

in

order

to

discharge

the

voltage.

:

(2)

Before

turning

the

power

supply

on,

after

completion

of

repair,

slowly

apply

the

primary

voltage

by

using

a

power

supply

voltage

controller

to

make

sure

that

the

consumed

current

at

50

Hz/60

Hz

in

NO

SIGNAL

mode

should

be

shown

below

with

respect

to

supply

voltage

110

V/127

V/220

V/240

V.

Power

supply

voltage

AC

110V

AC

127V

AC

220

V

AC

240

V

Consumed

current

50

Hz

|

100~500

mA

70~470

mA

50~250

mA

40~240

mA

Consumed

current

60

Hz

|

97~476

mA

68~457

mA

49~244

mA

39~236

mA

#

PROTECTION

CIRCUITRY

The

protection

circuitry

may

have

operated

if

either

of

the

following

conditions

is

noticed:

*No

sound

is

heard

when

the

power

is

switched

ON.

“Sound

stops

during

a

performance.

The

function

of

this

circuitry

is

to

prevent

circuitry

damage

if,

for

example,

the

positive

and

negative

speaker

connection

wires

are

“shorted”,

or

if

speaker

systems

with

an

impedance

less

than

the

indicated

rated

impedance

of

this

unit

are

used.

If

this

occurs,

follow

the

procedure

outlined

below:

1.

Switch

OFF

the

power.

2.

Determine

the

cause

of

the

problem

and

correct

it.

3.

Switch

ON

the

power

once

again.

Note:

When

the

protection

circuitry

functions,

the

unit

will

not

operate

unless

the

power

is

first

switched

OFF

and

then

ON

again.

ACCESSORIES

@AC

power

supply

COP

2...

eee

cece

renee

e

eens

1

Configuration

of

AC

power

supply

cord

differs

according

to

area.

e@Attachment

AC

plug

..........

0.

ccc

eee

ee

eee

eens

1

SJA190

.........-

For

(GN)

area

only.

SJP9215...For

(GC)

area

only

SJA188

..........

For

(EB)

area

only.

RJAO004

........

For

(GC)

area

only.

SFDACO5E03_....For

others.

m

LOCATION

OF

CONTROLS

eFront

panel

[1]

Power

switch

(POWER)

[2]

Voiume

level/balance

indicator

(BALANCE/VOLUME)

[3]

Volume-level

indicator

[4]

Muting

indicator

(MUTING)

[5]

Volume

control

(VOLUME)

[6]

Input

selectors/indicators

eRear

panel

PLAY

BACK

TAPE

(REMOTE

OUT)

TO

DECK

REC

ouT—

(REMOTE

IN)

TO

TUNER

EXT

LoutpuT

—

TUNER

GND

Audio

muting

switch

(MUTING)

Balance

controls

(BALANCE)

[9]

Tone

controls

(BASS/TREBLE)

Super

bass

control

(SUPER

BASS)

[11]

Surround-sound

switch

(SURROUND)

[12]

Headphones

jack

(PHONES)

COOLING

FAN

[SURROUND

-

SOUND

—

SPEAKERS

Co

~AC

IN

TURNTABLE

4

SYNCHRO-REC

tei

a

cD

SYNCHRO

TAPE

VOLTAGE

SELECTOR

(For

(GC)

area

only)

TO

DECK

(Except

[EG]

area)

*Phono

input

capacitance

is

about

270

pF

for

EG

area

(about

100

pF

for

other

areas).

m@

CONNECTIONS

sciedTes

Turntable

SYNCHRO

REC

(not

included)

Tuner

OUTPUT

(not

included)

QD

A

0

é

:

(See

below.)

Re)

RH

OHUROY

MOR

i

cen

MN

{J

REMOTE

contro.

Graphic

INPUT

OUTPUT

equalizer

®

@

(not

included)

i

“GND”

terminal

of

the

amplifier

This

terminal

is

for

use

with

a

turntable

which

has

a

ground

wire.

“EXT”

terminals

of

the

amplifier

When

these

terminals

are

not

in

use,

be

sure

to

insert

the

shorting

pins

(included).

Connection

diagrams

shown

are

for

connections

to

a

Technics

hi-fi

component

system.

Make

connections

in

the

numbered

sequential

order.

[1]Connect

the

stereo

connection

cables

(included

with

the

turntable,

tuner,

graphic

equalizer,

compact

disc

player

and

cassette

tape

deck).

[2|Connect

the

L-type

cables

(included

with

the

turntable,

compact

disc

player,

graphic

equalizer

and

cassette

tape

deck).

Note:

Connect

the

L-type

cables

included

with

a

compact

disc

player

as

illustrated

below

in

either

case:

eWhen

a

graphic

equalizer

does

not

have

the

remote

control

terminals.

«When

a

graphic

equalizer

is

not

used

in

combina-

tion

with

these

components.

Compact

disc

player

REMOTE

q

Cassette

tape

deck

y

OUTS

REMOTE

CONTROL

Turntable

(not

included)

[3]Connect

the

flat

cables.

[3-t]

Connect

the

3-core

flat

cable

Household

AC

outlet

(included

with

the

tuner).

oe

[3-2]

Connect

the

3-core

flat

cable

Tuner

CONTROL

AC

OUTLET

(included

with

the

cassette

tape

deck).

AMPLIFIER

—\

[ae

(not

included)

~AC

IN

[4]Connect

the

AC

power

supply

cords.

Connect

this

cord

only

after

all

other

cables

and

cords

have

been

connected.

Notes:

1.

The

configuration

of

the

AC

outlet

and

AC

power

supply

cord

differs

according

to

area.

ae

Except

[EG]

area)

-

2.

Connect

the

AC

power

supply

cord

included

with

a

He

(

compact

disc

player

to

the

AC

outlet

of

the

[3-2]

4

amplifier

as

illustrated

below

in

either

case:

¢When

a

graphic

equalizer

does

not

have

the

AC

Graphic

equalizer

AC

OUTLET

outlet.

(not

included)

When

a

graphic

equalizer

is

not

used

in

combina-

tion

with

these

components.

Amplifier

Compact

disc

player

AC

OUTLET

AC

OUTLET

(not

included)

~AC

IN

LJ

Gat

Compact

disc

player

AC

OUTLET

)

~AC

IN

(e2)

Ly;

a

|

@

About

the

AC

outlets

of

the

each

components

Do

not

connect

video-related

equipment

(such

as

a

TV,

etc.)

to

the

AC

outlets

of

these

components.

(These

outlets

are

especially

for

audio

equipment.)

Also

do

not

exceed

the

indicated

power

ratings

when

connecting

to

these

outlets.

°

“SWITCHED”

outlet

(For

tuner)

Power

is

controlled

by

the

power

switch.

¢

“UNSWITCHED”

outlets

(For

amplifier,

compact

disc

player,

graphic

equalizer)

Power

is

always

available,

regardless

of

power

switch

setting.

m@

DISASSEMBLY

INSTRUCTIONS

|

Removal

of

the

Cabinet

Removal

of

the

Front

Panel

Procedure

1—2

Cabinet

(Bottom

Side)

&

13]

1.

Remove

the

3

screws

(@~®).

2.

Remove

the

flat

cable

(J501).

3.

Remove

the

front

panel

in

the

direction

of

the

arrow.

Remove

the

6

screws

(Q@~@).

Removal

of

the

Power

Switch

P.C.B.

Procedure

152-3

Power

Switch

Front

Panel

How

to

remove

the

flat

cable

a

Pull

out

the

flat

cable

while

pressing

the

connector.

1.

Remove

the

power

switch

knob

by

pushing

it

from

behind

the

front

panel.

2.

Remove

the

2

screws

(@,

@).

Removal

of

the

Volume

P.C.B.

Ref.

No.

Removal

of

the

FL

Drive/Tone

4

Amp

P.C.B.

and

Volume

P.C.B.

1.

Remove

the

1

knob

(@).

2.

Remove

the

1

nut

(®).

Procedure

Removal

of

the

FL

P.C.B.

1.

Remove

the

3

knobs

(Q@~®).

3.

Remove

the

2

screws

(Q,

®).

2.

Remove

the

3

nuts

(Q@~@).

3.

Remove

the

5

screws

(@~@®).

tie

Connector

ae

B:

16mm

C:

longer

than

18mm

Use

a

wrench

of

the

dimensions

shown

in

the

illustration

above

to

remove

nuts.

Removal

of

the

Operation

Switch

|.

Ref.

No.

Removal

of

the

AC

Outlet/AC

IN

Ref.

No.

Removal

of

the

Fan

Motor

Ref.

No.

Removal

of

the

Power

P.C.B.

6

P.C.B.

9

10

Transformar

Procedure

1524-5

1>6

mm

110

3]

Kf

S|

=<

Operation

Sutch

Lpe

:

7

,

AP

a

A

|

(

Iw

AC

Outlet

/AC

IN

PC.B-

1.

Remove

the

3

screws

(Q@~®).

2.

Release

the

4

claws.

Release

the

4

claws.

1.

Remove

the

1

flat

cable

(J701).

2.

Remove

the

4

screws

(@~@Q).

Rear

Chassis

.

Pull

out

the

1

connector

(J207).

.

Release

the

3

claws.

.

Insert

a

screwdriver

at

the

root

of

the

cooling

fan.

Force

it

out

of

the

motor

shaft.

.

Remove

the

motor

cover

by

used

©

screwdriver.

.

Remove

the

motor

from

the fan

casing.

.

When

mounting

the

motor

fan,

align

the

fan

casing’s

projection

with

the

hole

of

the fan

motor.

Cooling

fan

1.

Remove

the

6

screws

(Q@~@).

2.

Remove

the

1

connector

(J204).

Fan

case

Projection

Fan

motor

Regulator

Transistor

1.

Unsolder

the

power

IC

or

regulator

transistor.

2.

Remove

the

3

screws

(Q@~®).

eWhen

mounting

the

power

IC

or

regulator

transistor.

Apply

silicone

compond

(SZZOL15)

to

the

rear

side

of

.

4.

Remove

the

3

screws

(@~®).

power

IC

or

regulator

transistor.

5.

Remove

the

main

P.C.B.

in

the

direction

of

the

arrow.

2

3

4

5

6

7

8

9

10

ES

crono

EQ

AMP

/

INPUT

SELECTOR

CIRCUIT

VOLUME

CIRCUIT

Q202,

203

GND

@

2SDI450QRSTA

Cilo0

108

12

Ha

SWITCHING

VR6EOI

For

CEG)

area.

ae

(

SURROUND

ON/OFF

)

(VOLUME

1

ao!

R102

390

50V3.3

:

ENSOPER

|

PHONO

‘e

|

aa

ait

aN

difference

@:

.

poy

Ber

|

B83

S3S88T

2

180K

signal

beat:

GA

Eooy

célé

R638

ie

REC

OUT!

Se

ga

220P

TAPE

oe

ziah

(C203

RIS6

IK

AN6554F

eee

ow

8

AN6558F

MIXING

/

2a,

PHONO

EQ

AMP

PHASE SHIFT

23

1c602

RISB

IK

MN40308

AUX

Ott

b

LOGIC

(OR)

teal

)

|

RI01

390

eey;

|e

wee

B

Lots

E

23

R236

6.8Kf

=zN

cD

Oat

c

88

ws.

52

of.

~—S

y

ZN

Phono

signal

on

Sree

For

(EG)

area.

(Lch)

83

0.022

0.0068

Lich

antes

{+}

.

|

RI51.470

|

R606

10K

PHONO

(Q)“pedeenpararept

5

be

Bey

Set

|

Be

O—G—O

0-0

Somes

z

(ie

es

RS

[REC

OUT

Q-sort

83

7

a201

uae

1K

e8T

aid

3

Se

ey

MN40138

TAPE

a

e:

oy

LOGIC

RI55

IK

x

(F-FLOP)

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a

My

:

5S

s

S

Cc

se

2

ati

RIS7

IK

ha

C214

AUX

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et

b

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254.7

18g-!

%

R605

10K

poe

|

:

L602

1.2p

R235

6aKy

2

cD

Wt

c &

38

Q20!

eal

¢

b_a

2S|AIZO9AQSTA

SWITCHING

For

(EG)

area.

TCOI64N

CONTROL

INPUT

SELECTOR

Recording

signal

~~

|

I

CONTROL

1

(TO

TUNER’

R661

D620

15K

MAIGSTA

REMOTE

OUT|

:

4203

E

(TO

TAPE)

D6I4,615

617,618

R640

470

0614.4

(TAPE)

SWITCHING

UNG7SRP-LS

‘e—

(TUNER

REMOTE

)

R641

470

0615

4%

1

AUX)

RIS9TK

D616

ad

TUNER

LD-

OOIVR

R645

220

0616

aw

(cD)

ey

(TAPE)

OH

r

OUTPUT

aOpret

R643

470

0618

ae

(

PHONO)

EXT

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L751

100,

[Es

INPUT

skeoz

i

7

co

|

25.

{

@)

Sel

i

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R

ch

SYNCHRO

REC

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MAIN

CIRCUIT

TUNER

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tel

[OUTPUT

°

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Bey

8oT

837

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input

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ie

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eee

ae:

Except

CEG)

FE}

neut

/

output

TERMINAL

CIRCUIT

=9=

—10-

11

12

13

FL

ORIVE

/

TONE

AMP

CIRCUIT

14

15

17

19

0606611

MAI65TA

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5.6K

I1c301

TC9I77P

R656

1.2K

R659

56K

Q605,609

UN42II1TA

SWITCHING

(REC

/

REMOTE

}

Q6o!

2SAI3Z09AQSTA

SWITCHING(

REMOTE

Q609

C695

0.01

IR626_

221

R627

22K

2K

100p

AAT

L618

100p

|

-4

R64

L6I7

100

L619

100p

L620

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FL6O!

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Technics SU-X933 User manual

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