Dual 622 Manual de usuario

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Service

Manual

Technical

Data

Currant

Line

voltage

Drive

Power

input

Power

consumption

Time

from

start

to

rated

speed

Platter

Platter

speed

Pitch

control

Speed

control

(monitoring)

Sensitivity

of

the

illuminated

strobe

(for

0.1

%

speed

deviation)

Total

wow

and

flutter

(according

to

DIN

45507)

Rumble

(according

to

DIN

45500)

Tonearm

Effective

length

of

tonearm

Offset

angle

Tangential

tracking

error

Tonearm

bearing

friction

(related

to

stylus

tip)

Stylus

pressure

Cartridges

Weight

Dual

622

Edition

January

1980

AC

50

to

60

Hz

110

to

125V,

220t0

240V

electronically-controlled

direct-drive

system,

Dual

EDS

500

Motor

at

playing

operation

approximately

2

watts

<50

mW

220

V

50

Hz:

at

start

35

mA

110

V60

Hz:

at

Start

65

mA

at

play

15

mA

at

play

approximately

25

mA

2-

2.5s

at

33

1/3

rpm

non-magnetic,

1.4

kg,

304

mm

diameter

33

1/3

and

45

rpm,

electronically

adjustable

Separate

for

both

speeds,

each

adjustable

by

means

of

variable

resistor,

with

calibration

scale;

range

of

regulation:

10%

with

illuminated

stroboscope

for

platter

speeds

33

1/3

and

45

rpm,

adjustable

to

50

or

60

Hz

6

division

markings

per

minute

at

50

Hz,

7.2

division

markings

per

minute

at

60

Hz,

(German

Industry

Standard)

±

0.05

%

WRMS

±

0.03

%

Unweighted:

50

dB

Weighted:

75

dB

Torsionally

rigid

tubular

aluminum

tonearm

in

low-friction

four-point

gimbal

suspension

221

mm

24

0

4'

0.16

0

/cm

vertical

<

0.07

mN

(0.007

g)

horizontal

<

0.15

mN

(0.0159)

from

0

to

30

mN

(0

to

3

g)

infinitely

variable

with

1

mN-

(1/109)

calibrations

from

0

to

15

mN

(0

to

1.59)

operable

from

2.5

mN

(0.259)

stylus

pressure

up.

with

1/2

inch

screw-type

attachment.

These

can

be

fitted

with

the

special

accessories

no.

262

186

which

can

be

obteined

from

trade

dealers.

ca.

5.4

kg

Dimensions

and

Cutout

Required

refer

to

Installation

I

nstructions,.

Download from www.dual.de

Not for commerical use

Contents

Page

1

Technical

data

2

Audio

connection

diagram

3

Wiring

diagram

4

Dual

EDS

500

eelctronic

direct

drive

system

4

Replacement

of

motor

electronic

4

Replacement

of

motor

mechanic

4

Adjustment

of

nominal

speeds

4

Setting

78

rpm

nominal

speed

5

Stroboscope

5

Pitch

control

5

Tonearm

and

tonearm

suspension

6

Removal

of

tonearm

or

spring

housing

6

Removal

of

tonearm

compl.

with

tonearm

suspension

6

Adjustment

of

tonearm

suspension

6

Fitting

1/2

inch

pick

-up

6

Antiskating

control

7

Cue

control

7

Replacement

of

cue

control

assembly

7

Tonearm

Control

7

Muting

Switch

8

Continuous

Play

8

Start

8

Manuel

Start

8

Stopping

9

Shutt-off

Mechanism

9

Adjustment

Points:

Tonearm

set

Down

Point

9

Shut

off

Point

9

Tonearm

does

not

set

down

9

Vertikal

Tonearm

lift

10

Correct

nominal

speed

obtained

only

at

extreme

setting

of

pitch

control

10

Platter

does

not

start

10

Tonearm

does

not

set

down

correctly

10

Motor

does

not

shutt-off

10

Acoustic

feedback

1

0

—

13

Replacement

vvith

exploded

views

14

Lubrication

Fig.

1

Audi

Connection

Diagramm

Kontaktplatte

Contact

plate

Plaque

de

contacts

rechter

Kanal

right

channel

Canal

droit

Kurzschließer

Muting

switch

Court-circuiteur

/

—

\

rot

/

red

/

rouge

/

s

r

I

1

I I

I

I

grün

/

green

/

lieft

‘,

/

\

/

\_,

schwarz

/

bleck

/

negro

,-,

blau/blue/bleu

/

\

/

\

1

I I

I

I

weiß

/

white

/

blanc

\

/

\

/

\

—/

L

linker

I.anaI

left

channel

Canal

gauche

Cynchstecker

DIN-Stecker

5-polig

phono

plug

DIN-plug

5

pin

fiche

cynch

fiche

DIN

5

püles

•

Masse

draht

Mass

lead

Mass

cäble

•

•

2

r

r

r

Dl

7,s

cl

47

p

1.1

2

•

66

2/3

Hz

(33

min

1

)

IV

C2

C3

220p

0,47

—

IR

2

10

k

C4

0,47v

•

T

1

10

.

BC

172

R5

111A

83

68k

4

/

6

IC1

4069

R4

22

k

—C

6

—

1

n

_C5

10n

n

33

86

1508

C7

in

—)R1

—

L

4

• I

5

,

3.1

n45

88

--

R

9

10

k

22

k

OR

7

47

k

R

10

24k

T2

BC

172

B

0,22

5

2

8

4

6

ic

2

—

555

—

3

3

7

1

5

—

371

•

6

819

•

5K

L

12

2_

_

-I

811

110k

2

/

6

ic

1

4069

11

C

14

0,1

pF

C9

20

n

12

1

816

560

R

13

15

k

02

1

N

4148

R15

10

k

c=AC

10

—

0,47

p

R

14

220

k

8.2

C

13

cr

47

5

—

<=4;C

12

0,68

g

8.1

T3

BC

238C

Transistoren

von

der

Anschlußseite

gesehen

Transistors

as

seen

from

the

connecting

side

Transistors

vus

du

&nä

des

connexions

1

EBC

BD

415

E

•

0

•

C

BC

172

BC

238

C

IC

von

der

Bestückungsseite

gesehen

as

seen

from

the

top

side

vu

du

cötä

älements

4069

555

13

812

270k

7

0

12

R

17

47

k

St

220

V

R

18

2

T4

INSD

1021

80

415

+22V

17,5V

C

55

1000p

c=

T

254

0

n

R

1

2

5

3

4

6

8

7

9

10

11

12

19

13

14

16

15

17

18

3

4

5

6

8

14

9

10

11

12

53

13

55

54

Fig.

3

Netzteil

Supply

unit

Bloc

secteur

Generator

Generateur

Fig.

4

Drehzahlregler

/R

19

Platter

speed

switch

/R

19

Motor

Commutateur

de

vitesse/R

19

Moteur

R16

14

R7[ir

—

41R101

-

6

—

-

7$1

•

C

14

8.1

1

09

T

013

4.

•-I

R13

1--•

_

,4

6C11

j

T2

• • •

>1UL

•

•C12

08

-1-

0-1

R14

EIN

R15

l•-•

T3

7

es

ü6•

1

Netatrafo

Mains

transformer

Transformateur

de

räseau

II

901„.

1

50

rnAT

I

53rnAml)

e e

43

,

0

220V

1105

Fig.

5

DgeMANNNIter

Plerte.

Nmed

swach

Cmnmalen

de

vital.

N

meatl

NN-

Motor

Motor

Moteur

to.

Glimmlampe

Glirn

lamp

Lampe

ä

effluves

Direct

Drive

System

Dual

EDS

500

For

repair

of

the

Dual

EDS

500

special

tools

and

measuring

means

are

required.

Work

on

the

motor

or

motor

electronics

system

should,

therefore,

only

be

carried

out

by

an

authorized

Dual

service

station.

Replacement

of

motor

electronics

1.

Extract

unit

plug

from

power

line.

Lift

off

platter

4.

Bring

unit

into

head

position.

2.

Remove

machine

screws

112

and

cover

of

power

part.

3.

Unsolder

connecting

leads

to

motor

and

generator.

Open

twists

of

holding

angle

150

with

pliers.

Remove

motor

electronics

152,

screws

151

and

holding

angle

150.

4.

Pull

off

motor

electronics

152

system

from

motor

18

carefully.

5.

Fix

replacement

motor

electronics.

Solder

connecting

cables

see

connection

diagram

Fig.

5.

6.

Slide

cover

over

power

part

and

fix

it

by

means

of

machine

screws

112.

7.

With

the

unit

in

normal

position

connect

lt

to

power

line.

Switch

on

unit

and

check

power

consumption

on

operation:

220

V/50

Hz

approx.

15

mA

110

V/60

Hz

approx.

25

mA

Check

nominal

speeds.

If

necessary,

readjust

as

described

belovv.

Replacement

of

motor

mechanics

1.

Extract

unit

plug

from

power

line.

Remove

platter

4.

2.

With

the

unit

in

head

position

remove

machine

screws

174

and

washers

173.

Pull

off

motor

electronics

board

172

together

with

cover

175

carefully

from

the

motor

18.

3.

Loosen

connection

for

operating

voltage

at

het

plate

109.

Unsolder

connecting

leads

to

speed

fine

adjustment

129,

rotary

switch

5

and

the

generator.

Open

twists

of

holding

angle

152

with

pliers.

4

•

4.

Loosen

threaded

pins

13

and

remove

platter

cone

12

Remove

the

three

screws

148.

Lift

off

motor

mechanics

149

5.

Put

platter

cone

12

on

new

motor

mechanics

and

ffix

it.

Fix

new

motor

mechanics

with

the

three

screws

148.

Fix

holding

angle

150

with

screws

151.

Insert

motor

electronics

152

and

twist

holding

pieces.

Solder

on

resp.

plug

connecting

leads

(fig.

5).

Push

cover

on

power

part

and

fix

it

with

screws

112.

6.

With

the

unit

in

normal

position

connect

it

to

the

power

line

Switch

on

unit

and

check

power

consumption

when

operating:

221'

,

//50

Hz

approx.

15

mA

11L

V/60

Hz

approx.

25

mA

Check

nominal

speeds.

If

necessary,

readjust

as

described

below.

Setting

nominal

speeds

With

knob

7

bring

the

fine

speed

control

129/R

19

into

center

Position.

With

controls

R

8

and

R

9

on

the

motor

electronic

system

adjust

nominal

speeds.

Control

R

8

is

used

for

33

1/3

rpm,

R

9

for

45

rpm.

Check

with

strobe

disk.

Changeover

to

78

rpm

nominal

speed

Instead

of

45

rpm

the

Dual

622

can

be

changed

to

a

nominal

speed

of

78

rpm.

To

change

the

speed

bring

the

fine

speed

control

129/R

19

in

center

position

using

knob

7.

Using

control

R

9

on

the

motor

electronics

board

152

adjust

for

78

rpm.

Check

with

strobe

disk.

Stroboscope

Accurate

setting

of

the

planer

speeds

33

1/3

and

45

rpm

can

be

checked

during

play

with

the

aid

of

the

stroboscope.

When

the

platter

4

is

rotating

at

exactly

33

1/3

or

45

rpm

the

lines

of

the

stroboscope

appear

to

stand

still.

If

the

lines

move

in

the

direction

of

rotation

of

the

platter,

the

platter

speed

is

too

high.

If

the

lines

move

backwards,

the

platter

is

rotating

more

slowly

than

the

nominal

speed.

Adjustment

of

platter

speeds

33

1/3

and

45

rpm

is

carried

out

separately

with

the

"pitch"

controls

7.

Strobe

markings

are

provided

on

the

outer

edge

of

the

platter

for

50

and

60

Hz

line

frequencies.

To

replace

glow

lamp

157

remove

machine

screws

160

and

remove

strobe

cover.

lt

can

happen

that

the

stroboscope

lines

appear

to

move

slightly

although

the

exact

speed

setting

with

stroboscope

stationary

has

not

been

altered.

This

apparent

contradiction

is

explained

by

the

fact

that

the

electronic

central

drive

motor

operates

fully

inde-

pendently

of

line

frequency

whilst

the

only

relatively

accurate

line

frequency

of

the

AC

current

supply

is

used

for

speed

mea-

surement

with

the

light

stroboscope.

The

constantly

detectable

fluctuations

of

line

frequency

by

±

2

%

according

to

the

infor-

mation

of

the

electricity

supply

companies

brief

frequency

fluc-

tuations

up

to

1

are

possible

—

only

effect

the

stroboscope

indication

and

can

cause

the

lines

to

"wander"

although

the

platter

speed

is

as

constant

and

absolutely

accurate

as

before.

Fig.

6

111

152

148

12

13

150

Sell

Pitch

Control

Each

of

the

two

standard

speeds

33

1/3

and

45

rpm

(78

rpm)

can

be

varied

by

about

10%.

The

variablespeed

control

1291

19

located

in

the

voltage

divider

is

adjusted

by

turning

the

pitch

control

knob

7.

By

this

the

differential

amplifier

is

altered

and

the

motor

speed

accordingly.

Fig.

7

U/min

soHz

45U/min

soHz

33

U/min

50Hz

33U/min

6oHz

.4.5ze

Tonearm

and

Tonearm

Suspension

Th

efeather-light,

extremely

torsion

resistent

all-metal

tonearm

is

suspended

in

a

gimbal.

Suspension

is

by

means

of

4

hardened

and

precision

polished

steel

points

which

rest

in

precision

ball

bearings.

Tonearm

bearing

friction

is

thus

reduced

to

a

minimum.

Bearing

friction

vertical

0.07

mN

(0.007

p)

Bearing

friction

horizontal

0.15

mN

(0.015

p)

as

related

to

stylus

point.

As

a

result,

it

ensures

most

favourable

pick

-up

conditions.

Before

adjusting

the

tracking

force

to

suit

the

built-in

pick

-up

cartridge

the

tonearm

is

balanced

with

the

scale

set

to

zero.

Coarse

adjust-

ment

is

carried

out

by

moving

the

weight

with

the

stem

49,

the

subsequent

fine

adjustment

by

turning

the

weight.

The

tracking

force

is

adjusted

by

turning

the

graduated

spring

housing

58

incorporating

a

coil

spring.

The

Rotary

knob

54

has

markings

for

a

range

of

adjustment

from

0

to

30

mN

(0

to

3

p)

which

permit

accurate

adjustment

of

the

tracking

force.

One

graduation

in

the

range

of

2

—

15

mN

(0.2

—

1.5

p)

corresponds

to

1

mN

(0.1

p),

In

the

range

of

15

—30

mN

(1.5

—

3

p)

to

2.5

mN

(0.25

p).

Fig.

8

34

52

50

51

57

44

35

208

Fig.

9

Fig.

10

-

•

•

--

r•

J

I

33

32

58

54

55

61

63

173

174

170

To

Remove

the

tonearm

or

the

spring

housing

1.

Secure

the

unit

in

a

repair

stand.

Turn

the

rotary

turn

switch

51

to

the

zero

position.

Lock

the

tonearm

48.

Remove

the

counterweight

49.

2.

Turn

the

unit

over.

Remove

the

screening

sheet

140

and

solder

off

the

tonearm

connections

at

the

short

circuiter

137.

Turn

the

unit

the

right

way

up.

3.

Remove

the

fillister

head

screw

55.

Remove

the

rotary

turn

switch

54

and

the

washer

53.

4.

Loosen

the

nut

50

and

the

grub

screw

51.

Draw

the

tone

-

arm

48

complete

with

bearing

57

from

the

bearing

race

52.

The

spring

housing

52

or

the

tonearm

48

may

now

be

changed.

Reassembly

involves

the

reverse

procedure.

Removal

of

tonearm

assembly

with

tonearm

bearing

We

recommend

the

following

procedure:

1.

Clamp

unit

in

the

repair

jig.

Set

the

rotary

knob

54

to

zero.

Lock

tonearm

48.

Remove

weight

49.

2.

Move

unit

into

head

position

and

remove

the

screening

plate

140.

Unsolder

the

tonearm

connections

on

the

muting

switch

137.

3.

Remove

lock

washer

184.

Lift

off

main

lever

183

and

bearing

support

182.

Remove

lock

washer

144.

Lift

off

setting

raie

141

and

rotary

bearing

143

and

turn

towards

motor

149.

4.

Unlock

tension

spring

209.

Loosen

lock

washer

212

and

remove

skating

lever

211.

5.

Remove

lock

washer

211

and

slide

bar

171.

Lift

off

shut-off

bar

161

from

segment

208

6.

Remove

hex

nut

170.

Remove

sink

screw

174.

Hold

tonearm

48

and

lift

off

counter

bearing

173

and

segment

208.

7.

Remove

tonearm

complete

with

tonearm

bearing.

Reverse

this

procedure

when

reassembling.

Please

bear

in

mind

the

threaded

pin

33

is

correctly

positioned

in

the

bell

bearing.

Adjusting

the

tonearm

bearing

First

balance

tonearm

exactly.

Both

bearings

must

have

slight,

just

perceptible

play.

The

horizontal

tonearm

bearing

is

correctly

adjusted

when

at

anti-skating

settings

"0.5"

and

being

touched

it

slides

in

without

resistance.

The

vertical

tonearm

bearing

is

correctly

adjusted

when

it

swings

in

after

being

touched.

The

play

of

the

horizontal

tonearm

bearing

should

be

adjusted

with

threaded

pin

33

and

mat

of

the

vertical

tonearm

bearing

with

threaded

pin

51.

Fitting

a

1/2

inch

cartridge

lt

a

cartridge

with

1/2

inch

standard

mount

is

to

be

fitted,

the

conversion

kit

31

Number

262

186

is

necessary.

The

proper

me-

thod

of

fitting

is

shown

in

fig.

8.

Also

the

decorative

cover

should

be

removed

from

the

counter-

weight

49

and

should

be

fitted

with

the

compensatory

weight

to

be

found

in

the

conversion

kit

31.

Any

alteration

can

only

be

carried

out

with

the

aid

of

a

Dual

-

Skate

-0

-Meter

and

a

test

record

and

should

only

be

done

by

an

authorized

service

station.

Anti-skating

Device

To

compensate

for

skating

force

use

the

knurled

ring

68.

The

asymmetric

cern

plate

displaces

the

skating

lever

216

from

the

tonearm

pivoting

point.

The

anti-skating

force

is

transmitted

to

the

segment

207

and

to

the

tonearm

48

by

tension

spring

208.

Optimum

adjustment

is

carried

out

at

the

works

for

styli

having

a

tip

radius

of

15µm

(conical),

5/6

and

18/22

/Im

(elliptical).

Any

alteration

can

only

be

carried

out

with

the

aid

of

a

Dual

-

Skate

-O

-Meter

and

a

test

record

and

should

only

be

done

by

an

authorized

service

Station.

6

Cue

Control

By

moving

the

lever

190

forward

1V

I

lift

cam

192

rotates.

The

slide

bar

141

transmits

the

lifting

movement

to

the

lift

pin

206,

that

raises

the

tonearm.

As

a

result,

the

cue

control

permits

raise

up

the

tonearm

at

any

desired

point.

The

lever

190

is

released

by

moving

the

cue

control

lever

rear

wards

(

X

I

.

As

a

result

of

the

action

of

compression

spring

205

the

lift

pin

206

is

brought

back

to

its

normal

position

and

the

tonearm

loweres

slowly.

Lowering

of

the

tonearm

is

damped

by

silicone

oil

in

the

lift

tube.

Replacement

of

Cue

Control

Plate

Replace

cue

control

plate

207

as

follows:

1.

Clamp

unit

in

the

repair

jig.

and

lock

tonearm.

Turn

unit

in

head

position.

2.

Remove

safety

washer

184.

Lift

off

main

lever

183

and

bearing

support

182.

3.

Remove

safety

washer

144.

Lift

off

positioning

bar

141

and

rotary

bearing

143

and

turn

towards

motor

149.

4.

Remove

both

machine

screws

204,

remove

lift

plate

compl.

207.

For

installation

proceed

in

the

reverse

order.

The

lift

can

be

varied

by

turning

the

sleeve

45.

The

distance

between

the

record

and

the

needle

should

be

5

-

7

mm.

Tonearm

Control

Automatic

movement

of

the

tonearm

is

initiated

by

the

control

cams

on

the

inside

of

the

cam

wheel

16

on

rotating

through

360

0

.

The

control

elements

for

raising

and

lowering

are

the

main

lever

183

and

lifting

bolt

206,

for

horizontal

movement

the

main

lever

183

with

sag

ment

208.

The

automatic

tonearm

set

down

mechanism

isdesigned

for

30

cm

and

17

cm

records

and

is

coupled

to

the

platter

speed

change-

over.

The

setdown

points

of

the

tonearm

are

determined

by

the

spring

pin

of

segment

208

contacting

the

slide

bar

141.

Limitation

of

the

horizontal

movement

of

the

tonearm

is

produced

by

the

pin

of

segment

contacting

the

stop

attached

to

the

slide

bar

189.

Only

during

set-down

does

main

lever

183

l

ift

the

slide

bar

141

and

the

stop

attached

to

it

which,

es

a

result,

moves

into

the

swivel

range

of

the

stop

pin

fitted

on

the

segment.

After

completion

of

set

down

(lowering

of

the

tonearm

onto

the

record)

slide

bar

141

is

released

again

and

returns

to

its

neutral

position.

As

a

result,

the

slide

bar

141

moves

out

of

the

swivel

range

of

the

pin,

so

that

unimpeded

movement

of

the

tonearm

is

possible

for

playing.

Muting

Switch

To

prevent

disturbing

noises

during

automatic operation

of

the

tonearm

the

unit

is

fitted

with

a

muting

switch.

Control

of

the

switch

springs

for

both

channels

is

effected

by

the

camwheel.

With

the

unit

in

neutral

state

the

short

circuit

of

the

pick

-up

leads

is

eliminated.

Adjustment

In

zero

position

of

the

cam

there

should

be

a

clearance

of

ap-

proximately

0.5

mm

between

the

contacts

of

the

muting

switch.

This

clearance

should

be

adjusted

by

bending

the

muting

switch

contacts.

The

contacts

should

be

sprayed

with

a

suitable

cleaning

agent.

Fig.

11

Fig.

12

Fig.

13

7

Fig.

14

62

185

189

141

38

64

219

193

166 135

Fig.

15

a.)

b.)

Start

Switching

the

switch

lever

64

into

the

"start"

position

initiates

the

follovving

sequence:

a)

The

start

lever

219

rotates

the

switch

lever

180

which

is

pivoted

about

the

notched

stud.

At

the

same

time,

the

switch

arm

41

is

moved

the

motor

149,

via

the

povver

switch

116v

and

the

platter

starts

turning.

b)

Operating

the

switch

lever

68

also

releases

the

start

slide

38

which

is

drawn

toward

the

cam

by

means

of

the

tension

spring

156.

By

that

the

shut-off

lever

engage

vvith

the

drive

pinion

and

the

cam

turns.

Manual

start

The

latch

215

which

is

connected

to

the

switch

arm

41

engages

in

the

four-sided

plate

when

the

tonearm

is

moved

manually.

The

switch

arm

connects

the

mains

supply

to

the

motor

149

via

the

power

switch

116

and

the

platter

rotates.

.

When

the

run-out

groove

of

the

record

is

reached,

the

tonearm

is

lifted

and

returned,

the

motor

is

switched

off

automatically.

If

the

tonearm

is

lifted

off

the

record

before

the

run-out,

and

re-

turned

by

hand

to

the

pillar,

then

the

bolt

on

the

segment

208

engages

the

latch

215

so

that

the

switch

arm

is

returned

to

its

starting

position.

This

switches

off

the

mains

supply.

Continuous

Play

Continuous

Play

is

switched

on

by

turning

the

rotary

knob

62

to

The

rotary

knob

67

turns

the

switch

angle

185.

The

switch

rod

189

keep

the

change

lever

180

in

starting

position.

After

the

record

has

been

played

the

tonearm

returns

automa-

tically

to

the

lead-in

groove

of

the

record.

This

procedure

is

re-

peated

until

the

switch

lever

68

is

brought

to

the

"stop"

posi-

tion

or

the

rotary

knob

62

to

position

"1".

Adjustment

Point

Pull

mains

plug.

Remove

platter

4.

Bring

rotary

knob

62

to

position

"

oo

".

Turn

cam

wheel

to

central

position.

The

change

lever

180

turns

the

guide

lever

U

and

the

top

of

the

guide

lever

must

at

least

be

brought

to

the

cam

range.

Adjust

by

bending

the

switch

rod

189.

Stopping

When

control

lever

is

set

to

"stop

position

the

start

slide

38

which

is

pulled

towards

the

cam

by

means

of

tension

34,

be-

comes

free.

As

a

result,

the

shut-off

lever

is

moved

into

the

range

of

dogs

cam.

The

lever

remains

in

its

stop

position.

Shut-off

The

shut-off

and

stop

functions

depend

on

the

position

of

the

guide

lever

U.

The

guide

lever

U

is

brought

to

stop

position

by

the

main

lever

183

after

every

start

(longer

end

of

the

guide

lever

towards

cam

vvheel

centre).

The

shut-off

bar

161

is

guided

along

in

proportion

to

the

mo-

vement

of

the

segment

208.

The

shut-off

procedure

is

imitated

after

a

record

has

been

played

by

the

dog

M

of

the

platter

and

the

shut-off

lever

A.

8

The

shut-off

lever

A

is

moved

towards

the

dog

M

of

the

platter

within

the

shut-off

range

(record

diameter

116

mm

to

122

mm).

The

dog

engages

the

shut-off

lever

A.

The

cam

wheel

16

is

mo-

ved

from

0

position

and

engage

with

the

drive

pinion

of

the

platter.

The

main

lever

183

guides

the

tonearm

back

and

effected

the

tonearm

to

return

to

its

rest

position.

During

the

running

in

of

the

cam

wheel

into

0

position

the

roll

42

of

the

switch

arm

41

can

run

into

the

cut-out

provided

at

the

cam

wheel

and

achate

the

power

switch

116.

Adjustment

Points

Tonearm

set-down

point

The

set-down

point

can

be

varied

with

the

eccentric

bolt

176.

If

the

stylus

sets

down

onto

the

record

too

far

inside

or

outside

turn

eccentric

bolt

176

in

left

or

right

direction

(see

Fig.

7).

Shut-off

Point

The

shut-off

point

(shut-off

area

of

record

diameter

(116/

122

mm)

can

be

varied

with

the

eccentric

E

mounted

on

the

seg

ment

208.

Tonearm

lifting

height

a)

Remove

the

mains

plug.

Guide

the

tonearm

48

towards

the

edge

of

the

platter.

The

bottom

edge

of

the

cartridge

housing

should

be

parallel

to

the

top

edge

of

the

platter

cover.

Carry

out

alignment

by

turning

the

adjusting

sleeve

202.

b)

Press

the

start

button

and

turn

the

platter

4

in

normal

direc-

tion

until

the

tonearm

48

reaches

its

highest

position.

The

tonearm

should

now

have

a

vertical

play

of

approximately

1

—

2

mm

(measured

at

the

tonearm

post).

If

necessary,

slightly

turn

the

adjusting

sleeve

202.

Power

Switch

Turn

in

tonearm

48.

The

slide

117

of

the

power

switch

116

should

have

a

play

of

0.2

—

0.5

mm.

Adjust

by

bending

the

switch

arm

41.

Defect

Tonearm

does

not

set

down

on

record

or

lowers

too

quick

ly

when

operating

the

cue

control

lever

190

Vertical

tonearm

move-

ment

shows

resistance

Cause

Excessive

or

insuffidient

damping

as

a

result

of

contamination

of

the

silicone

oil

in

the

lift

tube

Excessive

friction

of

Lift

Pin

205

in

guide

tube

Fig.

16

Fig.

17

11

llllllll

1111111

,

11

,

11

1111

111111111

..

"

..

" .

111111.1111117

Ag

18

Remedy

Remove

cue

control

plate

207.

Remove

shaft

pin

200

and

washer

201.

Remove

adjustment

bush

sleeve

212.

Remove

washer

203.

Remove

lift

pin

206

and

compression

spring

205.

Clean

lift

tube

and

lift

pin.

Smear

lift

pin

evenly

with

"Wacker

Silicon

Oh

l

AK

300

000".

Reassemble

components.

See

obove,

if

necessary

change

the

lift

pin

206

9

Defect

Speed

lies

at

limit

of

the

range

of

adjust-

ment

of

the

pitch

control

Platter

does

not

turn

after

switching

unit

on

and

moving

tonearm

in

side

Tonearm

does

not

set

down

at

the

lead-in

groove

of

the

record

Motor

does

not

switch

off

when

tonearm

set

down

on

rest.

Acoustic

feedback

Replacement

parts

Cause

Nominal

speed

is

maladjusted.

Power

supply

to

motor

interruppted.

Power

fuse

110

defect

Remedy

Readjust

nominal

speed,

described

on

page

7.

Replace

the

fuse

110

Tonearm

set-down

point

The

tonearm

set-down

point

can

be

adjust

with

the

eccentric

is

incorrectly

set

bolt

176

Suppressor

capacitor

in

power

switch

ist

faulty

(short

circuit).

a)

Chassis

components

lag.

connecting

leads)

rubbing

on

board

cut

out

Replace

suppressor

capacitor

in

power

switch

a)

Line

up

mounting

board

cut-out

according

to

installation

instruct

ions

b)

Connecting

leads

too

b)

Slacken

or

lengthen

leads.

tight.

Pos.

Part.No.

Qty

Description

1

220

213

1

Centering

piece

2

214

056

1

Washer

3

263

254

1

Platter

compl.

with

mat

4

263

256

1

Planer

compl.

5

238

034

1

Rotary

switch

6

260

335

1

Rotary

knob

7

260

336

1

Rotary

knob

8

242

191

3

Grub

screw

9

263

257

1

Pitch

cover

10

200

444

8

Spring

washer

11

239

414

3

Shipping

screw

compl.

12

262

634

1

Washer

13

210

147

1

Lock

washer

14

242

192

1

Platter

come

compl.

15

242

191

3

Grub

screw

16

246

035

1

Cam

vvheel

17

232

972

3

Spring

rnount

compl.

237

228

1

Spring

mount

compl.

(Tonearm

side

front)

18

230

529

9

Threated

piece

19

230

521

3

Compression

spring

236

712

1

Compression

spring

(Tonearm

side

front)

20

200

723

4

Rubber

damping

21

200

722

4

Steei

cup

24

234

582

1

Tension

spring

25

263

259

1

Tonearm

head

compl.

26

261

929

1

Tonearm

lead

compl.

31

262

186

1

1/2

inch

conversion

kit

compl.

32

249

383

1

Counter

nut

262

695

1

Counter

nut

33

234

651

1

Grub

screw

34

263

260

1

Frame

compl.

35

242

677

1

Mach

ine

screw

M

4

x

8

36

233

710

1

Tension

spring

37

210

146

1

Lock

washer

38

242

786

1

Start

slider

39

210

361

1

Hex

nut

40

242

768

1

Bush

41

242

765

1

Switch

lever

42

242

785

1

Roll

43

200

650

1

Rubber

sleeve

44

263

261

1

Mounting

plate

compl.

45

242

770

1

Adjustment

screw

47

260

428

1

Clamp

screw

48

..-26442Q.

1

Tonearm

compl

26.

32.62

,

49

263

263

1

Weight

compl.

263

328

1

Weight

compl.

(UAP)

Pos.

Part.

No.

Qty

Description

50

246

884

1

Counter

nut

51

234

634

1

Grub

screw

52

263

329

1

Bearing

frame

compl.

53

261

798

1

Washer

5.2/10

54

248

989

1

Rotary

knob

55

249

097

1

Raised

counter

sunk

head

screw

M

2.5

x

12

56

236

069

1

Machine

screw

57

263

330

1

Bearing

compl

.

58

263

331

1

Spring

housing

compl.

59

248

979

1

Lifting

plate

60

210

597

1

Washer

3.2/6/0.5

61

262

294

1

Hexagon

sheet

screw

B

2.9

x

6.5

62

260

334

1

Rotary

knob

63

263

332

1

Rear

cover

compl.

64

260

485

1

Switch

lever

65

260

328

1

Stroboscop

prism

66

263

333

1

Front

cover

67

263

334

1

Tonearm

rest

compl.

68

260

320

1

Cam

disc

69

242

298

1

Washer

70

228

113

1

Washer

71

210

146

3

Lock

vvasher

3.2

72

200

444

4

Spring

vvasher

3.2

101

210

517

2

Machine

screw

.

M

4

x

10

102

210

648

2

Washer

4.2/14/1

103

242

283

2

Bush

104

209

939

2

Sleeve

105

210

480

4

Machine

screw

AM

3

x

6

106

237

548

2

Grommet

with

cord

stopper

107

228

209

1

Sleeving

108

242

284

1

Insulating

plate

109

1

Power

plate

compl.

26

g8

33

26

238

.

3

242

478

110

1

Fuse

T

0.063

A

C

53

222

760

2

Ceramic

20

nF/

50

V

C

54

222

760

2

Ceramic

20

nF/

50

V

C

55

227

880

1

Elyt

1000

i

liF

/

40V

D

52

227

344

4

1

N

4001

D

53

227

344

4

1

N

4001

D

54

227

344

4

1

N

4001

D

55

227

344

4

1

N

4001

111

244

474

1

Power

transformer

112

210

283

2

Fi

l

lister

screw

116

242

581

1

Povver

switch

compl

.

10