Technics SL-BD22D User manual

Table of contents

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ORDER

NO.

AD9507191C2

Service

Manual

FSG

servo

Automtic

Turntable

System

is

the

standard

mark

for

plug-in-connector

system,

Products

Automatic

Turntable

System

[™P

—

SL-BD22D

Colour

(K)--++

Black

Type

Area

Suffix

for

Area

Colour

Model

No.

(E)

Eurpoe.

(EB)

Geart

Britain.

(K)

(EG)

Germany

and

Italy.

Carrying

this

mark

are

interchangeable

and

compatible

with

each

other

SPECIFICATIONS

@

TURNTABLE

SECTION

Automatic

turntable

Auto-return

Auto-stop

Drive

method:

Belt

drive

Motor:

OC

motor

Drive

control

method:

FG

servo

control

Turntable

platter:

Aluminum

die-cast

Diameter

312mm

Turntable

speeds:

33-1/3

rimin

and

45

r/min

Wow

and

flutter:

0.045%

WRMS

(JIS

C5521)

+0.06%

Weight

zero

to

peak

(IEC

98A

weighted)

Rumble:

—70

dB

DIN-B

(IEC

98A

weighted)

@

TONEARM

SECTION

Type:

Static-balanced

straight

tonearm

Plug-in-connector

cartridge

system

Overhang:

15mm

Effective

length:

230

mm

Tracking

error

angle:

Within

2°32’

at

outer

groove

of

30

cm

disc

Within

0°32"

at

inner

groove

of

30

cm

disc

Applicable

cartridge

weight:

69

@

CARTRIDGE

SECTION

Type:

Moving

magnet

stereo

cartridge

Frequer~,;

response:

20

Hz

~

20

kHz

Output

voltage:

2.5

mV

at

1

kHz,

5

cm/s.

zero

to

peak

lateral

velocity

Channel

separation:

22

dB

at

1

kHz

Channel

balance:

Within

2

dB

at

1

kHz

Recommended

load

impedance:

47

kQ~

100

kQ

Compliance

(dynamic):

8

x

10°

*cm/dyne

at

100

Hz

Stylus

pressure

range:

1.25+0.25g

Weight:

6 g

(cartridge

only)

Replacement

stylus:

EPS-34CS

@

GENERAL

Power

supply:

For

(EB)

area’

AC

230V

~

240V,

50/60

Hz

For

(E,

EG)

area:

AC

230V,

50/60

Hz

w

Power

consumption:

3

Dimensions:

(WxHxD)

430x93X375

mm

Maximum

height

when

dust

cover

is

open

430360410

mm

Weight:

3.6

kg

(7.9

Ib.)

Specifications

are

subject

to

change

without

notice.

Weight

and

dimensions

are

approximate.

AX\WARNING

This

service

information

is

designed

for

experienced

repair

technicians

only

and

is

not

designed

for

use

by

the

general

public.

It

does

not

contain

warnings

or

cautions

to

advise

non-technical

individuals

of

potential

dangers

in

attempting

to

service

a

product.

Products

powered

by

electricity

should

be

serviced

or

repaired

only

by

experienced

professional

technicians.

Any

altempt

to

service

or

repair

the

product

or

products

dealt

with

in

this

service

information

by

anyone

else

could

result

in

serious

injury

or

death

Technics

@

CONTENTS

SAFETY

PRECAUTION

----

LOCATION

OF

CONTROLS

DISASSEMBLY

INSTRUCTIONS

--

MEASUREMENTS

AND

ADJUSTMENTS

TROUBLESHOOTING

--

BLOCK

DIAGRAM

CIRCUIT

BOARD

AND

WIRING

CONNECTION

DIAGRAM

EXPLODED

VIEW

REPLACEMENT

PARTS

LIST

SCHEMATIC

DIAGRAM

“10

PACKING

-

@

SAFETY

PRECAUTION

_

cthis

‘safety

precaution”

is

applied

only

in

U.S.A.)

1,

Before

servicing,

unplug

the

power

cord

to

prevent

an

electric

shock.

2.

When

replacing

parts,

use

only

manufacturer's

recommended

components

for

safety.

3.

Check

the

condition

of

the

power

cord.

Replace

if

wear

or

damage

is

evident.

4.

After

servicing,

be

sure

to

restore

the

lead

dress,

insulation

barriers,

insulation

papers,

shields,

etc.

5.

Before

returning

the

serviced

equipment

to

the

customer,

be

sure

to

make

the

following

insulation

resistance

test

to

prevent

the

customer

from

being

exposed

to

a

shock

hazard.

e@

INSULATION

RESISTANCE

TEST

1.

Unplug

the

power

cord

and

short

the

two

prongs

of

the

plug

with

a

jumper

wire.

2.

Turn

on

the

power

switch,

3.

Measure

the

resistance

value

with

ohmmeter

between

the

jumpered

AC

plug

and

each

exposed

metal

cabinet

part,

such

as

screwheads,

antenna,

control

shafts,

handle

brackets,

etc.

Equipment

with

antenna

terminals

should

read

between

3MQ

and

5.2MQ.

to

all

exposed

parts.

(Fig.

A)

Equipment

without

antenna

terminals

should

read

approximately

infinity

to

all

exposed

parts.

(Fig.

8)

Note:

Some

exposed

parts

may

be

isolated

from

the

chassis

by

design.

These

will

read

infinity.

Antenna

terminal

Exposed

Exposed

metal

metal

part

part

Ohmmeter

Onmmeter

(Fig.

A)

(Fig.

B)

Resistance

=

3MQ—5.2MQ

Resistance

=

Approx

oo

4.

If

the

measurement

is

outside

the

specified

limits,

there

is

a

possibility

of

a

shock

hazard.

The

equipment

should

be

repaired

and

rechecked

before

it

is

returned

to

the

customer

ll

ACCESSORIES

Note:

Configuration

of

AC

power

supply

cord

differs

according

to

area.

45-rpm

adaptor

(1)

Turntable

mat

(1)

AC

power

supply

cord

(1)

Stereo

connection

cable

(1)

Ground

wire

(1)

(SFWE212-01)

(SFTGB93M02EM)

yaorss

(E,

EG)

(SFDHBD2N01)

(SJPB7M)

LOCATION

OF

CONTROLS

45-rpm

adaptor

Turntable

mat

Strobe

lines

pilot

lamp

Pitch

control

(PITCH

ADJ)

This

unit's

strobe

illuminator

operates

at

the

AC

line

frequency

which

generally

has

a

0.2%

fluctuation.

This

fluctuation,

when

present,

may

make

the

strobe

pattern

appear

to

change.

However,

actual

platter

speed

does

not

change,

because

the

DC

motor

is

notaffected

by

AC

power

line

frequency.

Notes:

*Do

not

try

to

clean

the

dust

cover

while

a

disc

is

playing,

because

static

electricity

might

cause

the

tonearm

to

rise.

{cin

Tonearm

©The

unit

is

in

the

standby

condition

when

the

AC

power

supply

cord

is

Arm

rest

connected.

The

primary

circuit

is

always

“live”

as

long

as

the

power

cord

is

connected

Set

to”

2"

to

stop

to

an

electrical

outlet.

the

play

temporarily.

Set

to“

Z"

to

resume

the

play.

Stop

switch

(STOP)

Press

to

stop

the

play.

Strobe-illuminator/

(CUEING)

3

Cueing

control

Setto“Z”,

2

Speed

selector

(SPEED)

Set

to

disc’s

speed.

1

Place

a

disc

on

the

turntable

mat.

@

Fora

17-cm

(7”)

(large

center

hole)

disc

Remove

the

stylus

protector.

(The

tape

on

side

of

cartridge

prevents

the

stylus

assembly

from

shaking

loose

during

shipment.)

Move

to

the

desired

position.

(The

strobe-illuminator/pilot

lamp

will

light

and

the

platter

will

start

turning.)

Cartridge

(TaD)

is

the

standard

mark

for

the

“P-mount”

plug-in

connector

system.

Products

carrying

this

mark

are

inter-

changeable

and

compatible

with

each

other.

Setto"z”.

(Play

will

start.)

@

When

play

ends

1.

The

tonearm

will

automatically

return

to

the

arm

rest

(the

automatic

return

feature).

2.

Rotation

will

stop.

[

After

use

Attach

the

stylus

protector.

Protector

@

DISASSEMBLY

INSTRUCTIONS

How

to

remove

the

cartridge

Ref.

No

3

How

to

remove

the

turntable

platter

Procedure

1

1.

Remove

the

setscrew

@.

2.

Pull

out

the

cartridge,

taking

care

that

your

hand does

not

touch

the

stylus

tip.

Procedure

3

1.

Open

the

dust

cover

and

remove

the

turntable

mat.

2.

Remove

the

belt.

3.

Lift

up

the

turntable

platter.

Dust

cover

Turntable

Soft

cloth

f

f.

Be

ane

How

to

remove

the

stylus

Turntable

Platter

Procedure

|

«putt

out

the

stylus,

taking

care

not

to

2

touch

the

stylus

tip

Cartridge

Ly

SY

;

a

—

Stylus

Ret.

Ref.

No

oe

How

to

remove

the

bottom

board

7

5

How

to

remove

the

cueing

knob

Procedure

|

4

Turn

over

the

unit

on

a

soft

cloth.

Procedure

|.

Remove

the

setscrew@.

304

2.

Remove

the

5

setscrews

(@

~

@)

3e4aes

fl

<2

Z

2

Bracket

“~

if

Cueing

knob

E

S

Ref.

No

P

Ref.

No

A

“6

|

Howto

remove

the

stop

switch

knob

ae

How

to

remove

the

drive

P.C.B.

Precseure

1.

Remove

the

setscrew

@

Fi

gata

1.

Remove

the

3

setscrews

(@~

@).

2.

Remove

the

base

(with

knob)

in

the

ae

2.

Remove

the

drive

P.C.B.

in

the

direction

of

the

arrows

(@,

®).

direction

of

the

arrow.

3.

Release

the

2

claws.

eo

Note:

When

attaching

the

stop

knob,

do

not

forget

to

attach

the

spring

Ref.

No

8

How

to

remove

the

mechanism

plate

Procedure

Shield

plate

30408

f?

1,

Remove

the

6

setscrews

(0~0).

2.

Lift

up

the

mechanism

a]

plate.

FF

Mechanism

plate

|

c

6)

\

i

i

H

j

LK

Ret.

No

A

9

How

to

remove

the

tonearm

and

PU

fixing

plate

Procedure

3949809

1s

2.

3.

Unsolder

the

5

PU

lead

wires

from

the

phono

terminal

Remove

the

setscrew

@

and

spring.

To

remove

the

tonearm,

remove

the

2

setscrews

(0.0).

.

TO

remove

the

PU

fixing

plate,

remove

the

3

setscrews

(Q,

@.

@).

PU

lead

wiring

method

White

Blue.

Red

Green

Black...

.L

channel

(+)

terminal

.L

channel

(—)

terminal

-R

channel

(+)

terminal

.R

channel

(—)

terminal

.

Ground

terminal

PU

fixing

plate

Ref.

No

10

How

to

remove

the

cueing

cam

Note:

If

the

cueing

time

of

the

tonearm

becomes

too

short,

or

Procedure

39408010

1.

Push

the

pin

with

a

driver.

2.

Remove

the

pin

and

spring.

3.

Remove

the

cueing

cam.

if

the

cueing

cam

is

replaced,

apply

silicon

oil

(Part

No.

$ZZOL11)

according

to

the

following

procedure.

1.

Remove

the

cueing

cam.

2.

Apply

silicon

oil

to

the

cueing

cam

and

oil

tank.

Pin

Cueing

cam

—_—c=

SS

Apply

silicon

oil

element

How

to

remove

the

magnetic

resistor

Note:

If

the

magnetic

resistor

element

has

been

Procedure

304011

Remove

the

motor

assembly

in

the

direction

of

the

arrow.

Mi

CONNECTIONS

replaced,

observe

the

following

mounting

precaution.

The

magnetic

resistor

element

is

supplied

with

the

center

lead

bent.

Be

sure

the

seat

the

bent

lead

flush

to

the

P.C.B.

This

will

ensure

the

proper

clearance

(0.8+0.2

mm)

between

the

magnet

and

the

magnetic

resistor

element

as

shown

1,

Unsolder

the

3

lead

wires

from

the

magnetic

resistor

P.C.B.

2.

Release

the

claw

and

pull

out

the

P.C.B.

3.

Unsolder

the

3

terminals

of

the

magnetic

resistor

below.

+0

element.

Magnetic

6194

mm

Pull

out

resistor

\

0.840.2

mm

ry

element

Magnet

|

1.5mm

Holder

wel

t

Holder

PCB.

AC

power

supply

cord

(included)

To

household

AC

outlet

or

AC

outlet

on

amplifier

a)

—Os

2

t

GND

PHONO

4

@

o-000

ord

l

'

@!000

(PNL)IGND)

=

ar

tt

Ground

wire

(included)

foba

Amplifier

If

the

ground

w

a

“hum”

ni

S

NOt

Connected.

@

may

be

heard

Stereo

connection

cable

(included)

m@

MEASUREMENTS

AND

ADJUSTMENTS

ARM-LIFT

HEIGHT

ADJUSTMENT

The

arm-lift

height

(distance

between

the

stylus

tip

and

the

5

mm

~

7

mm

(3/16"

~

9/32")

record

surface

when

the

cueing

control

is

at

the

"2"

position)

has

been

adjusted

at

the

factory

to

approximately

5

to

7

mm

(3/16"—9/32").

If

the

clearance

is

too

narrow

or

too

wide,

turn

the

adjustment

screw

clockwise

or

counterclockwise.

Clockwise

rotation

—distance

between

the

record

and

stylus

tip

is

decreased.

Counterclockwise

rotation

—distance

between

the

record

and

stylus

tip

is

increased.

Adjustment

AUTOMATIC

RETURN

ADJUSTMENT

1.

Clamp

the

tonearm

to

the

arm

rest

2.

Remove

the

rubber

cap.

3.

Turn

the

screw

with

a

screwdriver,

clockwise

or

counter-

clockwise

as

necessary.

If

the

tonearm

tends

to

return

to

the

arm

rest

before

the

play

has

finished,

—turn

counterclockwise.

If

the

tonearm

fails

to

return

after

the

final

groove,

—turn

clockwise.

Auto-return,

\

adjustment

screw

SPEED

ADJUSTMENT

(PITCH

CONTROL)

There

are

strobe-lines

cut

on

this

turntable

platter

to

indicate

correct

rotational

speed

45rpm

If

the

strobe-line

appears

to

be

moving

as

the

turntable

33-1/3rpm

SoH

rotates,

adjust

while

playing

a

record.

45rpm

60Hz

1,

Set

the

speed

selector

to

the

speed

to

be

adjusted

33-1/3¢pm

2.

Push

the

power

switch.

The

strobe-illuminator/pilot

lamp

will

light

up

and

the

platter

will

rotate.

3.

Watch

the

dot

pattern

on

the

side

of

the

platter.

Turn

the

pitch

control

one

way

or

the

other

until

the

dots

appear

to

stand

still.

This

is

the

correct

speed

4.

Turning

the

pitch

control

in

the

“+”

direction

increases

the

speed.

5.

Turning

the

pitch

control

in

the

“—"

direction

decreases

the

speed.

The

strobe-line

for

60

Hz.

33-1/3

rpm

seems

to

be

stationary

ROTATING

SPEED

When

the

turntable

drive/control

IC

(IC

101)

or

the

variable

resistors

(VR101,

102)

are

changed,

or

if

the

rated

rotation

is

not

reached

even

when

the

pitch

control

knob

is

turned,

adjust

the

rotating

speed

in

the

following

procedure.

1,

Set the

speed

selector

switch

to

the

“45”

position.

2.

Turn

VR101

with

a

screwdriver

from

the

bottom

of

the

set

to

the

rated

rotation

(45

rpm)

and

check

the

rotation

with

a

strobe

while

adjusting

the

speed.

Set

the

speed

selector

switch

to

the

“33”

position.

4.

Turn

VR102

with

a

screwdriver

from

the

bottom

of

the

set

to

the

rated

rotation

(33-1/3

rpm)

and

check

the

rotation

with

a

strobe

while

adjusting

the

speed.

VR102

e

Note:

Be

sure

to

make

the

adjustment

for

45

rpm

first.

VR101

(33-1/3

rpm),

(45

rpm)

@

TROUBLESHOOTING

No

sound

‘comes

out.

Check

the

resistance

at

output

pin

plug

(left

and

right

channels).

Strobe

LED

does

not

indicate.

Turntable

does

not

rotate.

4

O~

a

few

ohms

||

Check

if

shorted

circuit

at

pin

plug

or

lug

terminal

or

connector

or

cartridge.

22

(open)

Check

if

opened

circuit

at

pin

plug

or

lug

terminal

or

connector

or

cartridge

Check

if

sequently

connected

to

amplifier

or

check

amplifier.

Strobe

LED

drive

circuit

Wavetorm

of

collector

of

Q201

Lis

8.2ms

-

Connect

the

AC

power

plug

to

AC

power

plug

is

connected

ah

AC

wall

achat,

ae

ee

ee

ese

i

-—

Belt

is

set

over

the

turntable

capstan?

Set

the

belt

correctly.

Q201,

202

(Drive

transistor)

0201~0207

R201~R205

defective

——_—_—_—<__—_—_

T1

(Power

transformer)

$1

(Power

switch)

01~D4

(Rectifier

}defective

diode)

IC1

(Regulator

IC)

1C101

(Drive

IC)

Power

source

circuit

1.

AC

14V

between

FC2

terminals

©

and

©.

2.

OC

voltage

of

regulator

IC

(IC1)

@12v

@6v

@ov

3.

OC

voltage

at

terminal

@

of

1C101

(3V).

Ss

Drive

circuit

1€101

(Drive

IC)

*DC

voltage

of

drive

transistor

(0101)

0101

(Drive

Base

|

Collector

|

Emitter

|

transistor)

defective

33

rom

1.5V

1

6.3V

i

Motor

45

rpm

|

1.6V

5.2V

R108,109

(Resistor)

Unstable

rotation

Turntable

rotates

too

fast

or

does

not

rotate.

FG

amplifier

circuit

1,

Waveform

of

terminal

@

of

CN101

wo

Z601

(Magnetic

resistor

element)

1€101

(Control

IC)

R101~R103

C101~C103

Motor

2.

Waveform

of

terminal

@

of

IC101

J

av

1.4V

33

rpm

3.3ms

45

rpm

2.5ms

33pm

3.3ms

45

rpm

—-2.5ms

a

eas

Control

circuit

1.

Waveform

of

terminal

@®

of

10101

FUP

33

rpm

3.3ms

45

rpm_—_2.5ms,

2.

Waveform

of

terminal

@

of

1C101

AV

be

33

rpm

3.3ms

45pm

.2.5ms

1,

Waveform

of

terminal

of

CN101

3+0.8V

At=S%

more

than

(0.17ms)

120mV

t

Refer

to

precaution

on

page

5.

3.3ms

©

Terminal

guide

of

IC's,

transistors

and

diodes

SVIBA6301

y

AN78L06

SVDBRSSO5SA

SVDBRS505SB

&

V

input

Ne

|

fw.

2801423

2SA1309

ee

Uf,

SVD1SR35200V

2801383

SVD1SS254

c

or

:

Caution!

IC

and

LS!

are

sensitive

to

static

electricity.

Secondary

trouble

can

be

prevented

by

taking

care

during

repair.

®

Cover

the

parts

boxes

made

of

plastics

with

aluminum

foil.

®

Ground

the

soldering

iron.

©

Put

a

conductive

mat

on

the

work

table.

*

Do

not

touch

the

legs

of

IC

or

LSI

with

the

fingers

directly.

—g9-—

+}

'C101

(Control

IC)

defective

If

the

reading

is

=,

then

Z601

If

the

reading

is

1.3kQ,

then

1.

Conduction

check

of

CN101

terminal

of

@

and

©.

©

detective.

and

©.

motor

defective.

SCHEMATIC

DIAGRAM

1

2

3

4

5

For

(EB)

area:

‘AC

230V

~

240V,

50/60

Hz

For

(E,

EG)

area:

‘AC

230V,

50/60

Hz

art

Sos

1oDoe

CBee

COIS

Gan

A

f

.

4

sw!

7

PH

BA

QA

fo

ASram

23m6

Ritererne!

sna

hen

tone

eon

saosin

238

Notes:

Note:

1.

St

Power

switch

in

“on”

position.

Note

1

2.

$101:

Speed

selector

switch

in

“33”

position.

3.

The

values

are

of

the

reference

voltage

for

the

turntable

rotation

(33

rpm)

of

D

this

unit,

measured

by

a

DC

voltmeter

(high

impedance)

on

the

basis

of

(E.

EG)

(€8]

chassis.

So,

some

error

might

be

included

depending

on

the

internal

impedance

of

the

measuring

instrument

and

the

unit

measured.

281383

28D1423

“(

);

voltage

in

45

rpm.

Note

2

4,

Important

safety

notice:

Components

identified

by

A\

mark

have

special

characteristics

important

for

safety.

When

replacing

any

of

these

components,

use

only

manufacturer's

specified

parts.

R204

|

ERDS2TJ332

(3.3K)

|

ERDS2TJ562

(5.6K)

5.

VR101

is

the

45

rpm

speed

adjustment

variable

resistor.

6,

VR102

is

the

33-1/3

rpm

speed

adjustment

variable

resistor.

7.

This

schematic

diagram

may

be

modified

at

any

time

with

the

development

of

new

technology.

E

F

OUTPUT

@

The

supply

part

number

is

described

alone

in

the

replacement

parts.

aeK

Production

Part

No.

~

Supply

Part

No.

:

Green

|

Q101

(E.

EG)

2S8C1383

2SC01383-QRS

'

1

ex

Q101

(EB)

2801423

2SD1423QRS,

:

(+)

‘

ane

|

Q201,

202

2SA1309

2SA1309A-R

f

ue

i

me

T

Di-~4

SVD1SR35200V

SVD1SR35200A

FI

Oa

a

$

Black

0)

GND

D201,

202

SVD1SR35200V

SVD1SR35200A

D203

SVD1SS254

1SS254TA

D206,

207

SVD1SS254

1SS254TA