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Service

Manual

Technical

Data

Measured

values

Current

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

45

507)

Rumble

(according

to

DIN

45

500)

Tonearm

Effective

length

of

tonearm

Offset

angle

Tangential

tracking

error

Tonearm

bearing

friction

Irelated

to

stylus

tip)

Stylus

pressure

Cartridges

Weight

Dual

CS

626

Edition

February

1980

typical

values,

Rumble

and

wow

and

flutter

values

obtained

with

test

record.

AC

50

to

60

Hz.

110

to

125

V,

220

to

240V

electronically-controlled

direct-drive

system,

Dual

EDS

500

Motor

at

playing

operation,

approximately

2

watts

<

50

mW

220V

50

Hz:

at

start

35

mA

at

play

15

mA

110

V

.

60

Hz:

at

start

65

mA

at

play

approximately

25

mA

2—

2.5

s

at

331/3

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,

range

of

regulation:

10

%

with

illuminated

stroboscope

for

platter

speeds

33

1/3

and

45

rpm,

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

Weignted:

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

(0.015

g)

from

0

to

30

mN

(0

to

3g)

infinitely

variable

with

1

mN-

(1/109)

calibrations

from

0

to

15

mN

(0

to

1.5

g)

operable

from

2.5

mN

(0.25

g)

stylus

pressure

upwards.

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.

7.2

kg

Download from www.dual.de

Not for commerical use

Contents

Page

1

Technical

data

2

Audio

connection

diagram

3/4

Wiring

diagram

5

Printed-Circuit-Boards

6

Dual

EDS

500

electronic

direct

drive

system

6

Replacement

of

motor

electronic

6

Replacement

of

motor

mechanic

6

Adjustment

of

nominal

speeds

6

Setting

78

rpm

nominal

speed

6

Stroboscope

6

Pitch

control

7

Tonearm

and

tonearm

suspension

7

Removal

of

tonearm

or

the

spring

housing

7

Removal

of

tonearm

compl.

with

tonearm

suspension

7

Adjustment

of

tonearm

suspension

8

Fitting

1/2

inch

pick

-up

8

Antiskating

control

8

Cue

control

8

Replacement

of

cue

control

assembly

8

Tonearm

Control

9

Muting

Switch

9

Start

9

Manuel

Start

9

Continuous

Play

9

Stopping

9

Shutt-off

Mechanism

10

Adjustment

Points.

Tonearm

set

Down

Point

10

Shut

off

Point

10

Tonearm

vertical

lift

10

Power

switch

11

Pull

magnet

"Start/Stop"

11

Pul

l

magnet

"Lift"

11

Tonearm

does

not

set

down

11

Vertikal

Tonearm

lift

11

Platter

does

not

start

12

Tonearm

does

not

set

down

correctly

12

Motor

does

not

shutt-off

12

Acoustic

feedback

12—

15

Replacement

with

exploded

views

16

Lubrication

Fig.

1

Audio

Connection

Diagram

Kontaktplatte

Contact

plate

Plaque

de

contacts

rot

/

red

/

rouge

rechter

Kanal

Kurzschließer

Cynchstecker

DIN-Stecker

5-polig

right

channel

Muting

switch

phono

plug

DIN-plug

5

pin

Canal

droit

Court-circuiteur

fiche

cynch

fiche

DIN

5

pöles

grün

/

green

/

vert

\•_,/

schwarz

/

bleck

/

negro

blau

/

blue

/

bleu

/ \

•

weiß

/

white

/

blanc

linker

Kanal

left

channel

Canal

gauche

•

Masse

draht

Mass

lead

Mass

cäble

•

•

2

•edmo•

Fig.

2

Wiring

Diagram

1

••••••••

C

1

=;,›

D

1

47

µ

—

ZPD

7,5

0

-1

66

2/3

Hz

-

(33

min

l

Ir

C2

C3

220P

0,47p

R2

10k

C4

0,47

µ

R

I

_1

M

•

TI

0+

BC

172

1

R3

68k

4/0

IC

1

4069

R5

1

M

I

--4e

R4

22

k

13

1

C

6

—in

—C

5

e

5

1

6

n

33

4

3.1

_J

045

R6

7R

8

:ZR

9

150k

-

10

k

_22k

—

10

n

c7

in

R7

47

k

nR

10

Ü

24

k

T2

BC

172

B

_C8

0,22

,u

8

4

6

IC

2

-

555

-

3

3

5

R

11

110k

C

14

0,1

pF

—

22

nF

Motorelektronik

Motor

electronic

Electronique

de

moteur

Elektronik

Electronic

Electronique

C9702

S

4

b

10

nF

(32

\

C

9101

1000

µF

—10+

D

9101-9104

1

N

41101

R

910

1,8k

R

9102

47k

C

9104

0,15

pF

—C

9102

C

9103-

—

22

nF

22

nF

110

-

240

V

09105

L-1

ZPO

7,5

Ausgabe

1/November

1979

13

Stroboskop

1

Stroboscope

g

N

-

Stroboscope

D9251

_

J

09252

IC

9102

78

L

12

C9105

1

mF

R

9104

100

T

9102

BC

338-25

R

12

270k

1

22V

12V

±

C

9106

—

6,8

µF

1

4

/

4

IC

91

MC

1400

8

R

9106

47

k

1

2

5

3,4

6

8,7

9,10

9101

9102

9105

9103

9104

12

9106

11

1

4

2

3

9101

5

6

7

9102

9103

9

8

14

9104

9105

9106

910

3

IC

1

9

11

10

0

13

12

8.2

R

16

560

813

_

15k

V

D

2

1

N

4148

C

10

0,47

/I

• I

R

15

10

k

R

14

220

k

C

13

47

/1

C

12

0,613

C

11

=7,

1011

R

17

47

k

8.1

•

7

•

T3

BC

238

C

818

2

T4

NM

102

(131)

415)

Transistoren

von

der

Ansch)ußseite

gesehen

Transistors

as

seen

from

the

connecting

side

Transistors

vus

du

cbte

des

connexions

1

EBC

BD

415

BC

172

BC

238

C

92

PU

45

NS

BC

238-25

BC

239

C

Solenoid-Anschlußplatte

Solenoid

connection

plate

Solenoid

plaque

de

connection

stop

Stummschaltung

Silent

circuit

Silencieux

circuit

5

19

Reedrelais

DA

-

1

C

9107

1

µF

R

9107

_

3,9

M

01

1

BCP

I

0

12

11

(Q,

88

1

0,47

p

•—(12

9108

3,3

M

12

13

E

D

9201

•

1

N

4001

L

statt

•

I

0

9202

--•

1

N

4001

2,

4

I

Lift

A

09203

1

1

N

4001

-0

S3

S

4

a

L

89110

öC9110

3,3

pF

/-

I

>

s5

T

9103

92

PU

45

NS

C9111

0,1p

9112

1k

89111

10

k

9107,9108

10,11

13,15,16

14

17

18

9151,9109

12

13

9110

9112

9111

7,9108

9151

9111

9110

IC

von

der

Bestückunsseite

gesehen

as

seen

from

the

top

side

vu

du

cöte

elements

51:

]4

8

7

C

C

3

81:

0

31

555

Frontbedienung

Front

control

Reglage

frontal

4069

MC

14001

BCP

EIA

NS

LM

78

L

12

Änderungen

vorbehalten.

4

Fig.

3

Motorelectronic

(equipement

side)

e

Generator

Generateur

-MP

Drehzahlregler

/R

19

Platter

speed

switch

/R

19

Commutateur

de

vitesse

/R

19

Ä

C3:.

7.

T1

42

'1

C2

01.1

T

R16

82

ei

R6

1--•

Ics

R7r.

—

R0

•

c

14

Motor

Moteur

8.1

e-J`64'

I

7

1 T

C13

+

ei

R13

1-11

7C11

4

•-e--•

C7

T2

•

„.

D2

r'''

.C12

7

8

*-11-•

7

0

C8

R14

+

cia.

1

R15

1--•

T3

--•

Fig.

4

Electronicplate

(equipement

side)

CD

CD

0

Fig.

5

Solenoid

connect

on

plate

(equipement

side)

Front.Control

1N

4001

1N

4001

1N4001

ci

Solenoid

Start

Solenoid

Stop

27,

C)

mon

ci

J

-

1-

Stummsch

0

o o

o

o

o

o

R91

12

C9110

R9111

-0

0

(1)

Fig.

6

Silent

circuit

(equipement

side)

Kurzschließer

Short

Circuiter

Court.circuiteur

Solenoid

Lift

5

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

stet

ion.

Replacement

of

motor

electronic

1.

Extract

unit

plug

from

power

line.

Lift

off

platter

4.

Remove

the

machine

screvv

and

the

monting

plate

27.

Loosen

connec-

tion

on

solenoid

plate

151.

Clamp

unit

in

repair

jig.

Bring

unit

into

head

position.

2.

Loosen

connection

for

operating

voltage

on

electronic

plate

137.

Unsolder

connecting

leads

on

speed

control

157,

turn

switch

6

and

generator.

Open

twists

of

holding

angle

142

with

flat

pliers.

3.

Pull

off

motor

electronics

143

system

from

motor

141

carefully.

4.

Fix

replacement

motor

electronics.

Solder

connecting

cables

(see

connection

diagram

Fig.

5.

With

the

unit

in

normal

position

connect

it

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.

6.

Bring

unit

in

the

base.

Install

the

platter

4.

Mounting

plate

27

fix

it

with

machine

screws.

Fig.

7

123

137

Fig.

8

• 1

ffl

11131

Ondluldschelter

Plmer

I.*

switch

Commutateur

de

v.u.,

Eldbaron

Elearonm

Elderond.ue

143

140

7

8

142

Replacement

of

motor

mechanic

1.

See

abore.

Clamp

unit

in

repair

jig.

2.

Unsolder

connecting

leads

to

motor

and

the

generator.

Open

twists

of

holding

angle

142

with

flat

pliers.

Lift

off

motor

electronic

143.

Removemachine

screw

and

holding

angle

142.

3.

Loosen

threaded

pins

8

and

remove

platter

cone

7.

Remove

the

three

screws

140.

Lift

off

motor

mechanics

141.

4.

Put

platter

cone

7

on

new

motor

mechanics

and

fix

it.

Fix

new

motor

mechanics

with

the

three

screws

140.

Fix

holding

angle

142

with

screws.

Insert

motor

electronics

141

and

twist

holding

pieces.

Solder

on

resp.

plug

connecting

leads

(Fig.

8).

5.

With

the

unit

in

normal

position

connect

it

to

the

power

line

Switch

on

unit

and

check

power

consumption

when

opera-

ting:

220

V/50

Hz

approx.

15

mA

110

V/60

Hz

approx.

25

mA

Check

nominal

speeds.

If

necessary,

readjust

as

described

below.

6.

Bring

unit

in

the

base.

Install

the

plater

4.

Mounting

plate

27

fix

it

with

machine

screws.

Setting

nominal

speeds

With

knob

10

bring

the

fine

speed

control

157/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

331/3

rpm,

R

9

for

45

rpm.

Check

with

strobe

disk.

Changeover

to

78

rpm

nominal

speed

lnstead

of

45

rpm

the

can

be

changed

to

a

nominal

speed

of

78

rpm.

To

change

the

speed

bring

the

fine

speed

control

157/R

19

in

center

position

using

knob

10.

Using

control

R

9

on

the

motor

electronics

board

143

adjust

for

78

rpm.

Check

with

strobe

disk.

Stroboscope

Accurate

setting

of

the

platter

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

backvvards,

the

platter

is

rotating

more

slovvly

than

the

nominal

speed.

Adjustment

of

platter

speeds

33

1/3

and

45

rpm

can

make

with

the

"pitch"

control

10.

Strobe

markings

are

provided

on

the

outer

edge

of

the

platter

for

50

and

60

Hz

line

frequencies.

To

replace

LED

154

remove

machine

screws

156

and

remove

strobe

cover

153.

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

measurement

with

the

light

stroboscope.

The

constantly

detec-

table

fluctuations

of

line

frequency

by

±

0.2%

according

to

the

information

of

the

electricity

supply

companies

brief

frequency

fluctuations

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.

Pitch

Control

Each

of

the

two

standard

speeds

33

1/3

and

45

rpm

(78

rpm)

can

be

varied

by

about

10

%.

The

variable

speed

control

157/R

19

located

in

the

voltage

divider

is

adjusted

by

turning

the

pitch

control

knob

10.

By

this

the

differential

amplifier

is

altered

and

the

motor

speed

accordingly.

6

Tonearm

and

Tonearm

Suspension

The

feather-light,

extremely

torsion

resistant

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

40,

the

subsequent

fine

adjustment

by

turning

the

weight.

The

tracking

force

is

adjusted

by

turning

the

graduated

rotary

knob

64

incorporating

a

coil

spring.

The

scale

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).

To

remove

the

tonearm

or

the

spring

housing

1.

Secure

the

unit

in

a

repair

stand.

Turn

the

rotary

turn

switch

64

to

the

zero

position.

Lock

the

tonearm

73.

Remove

the

counterweight

40.

2.

Turn

the

unit

over.

Remove

the

screening

sheet

217

and

solder

off

the

tonearm

connections

at

the

short

circuiter

211.

Turn

the

unit

the

right

way

up.

3.

Remove

the

fillister

head

screw

66.

Remove

the

rotary

turn

switch

64

and

the

washer

65.

4.

Loosen

the

nut

44

and

the

grub

screw

45.

Draw

the

tonearm

73

complete

with

bearing

70

from

the

bearing

race

46.

The

spring

housing

69

or

the

tonearm

73

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

64

to

zero.

Lock

tonearm

73.

Remove

weight

46.

2.

Move

unit

into

head

position

and

remove

the

screening

plate

217.

Unsolder

the

tonearm

connections

on

the

muting

switch

211.

3.

Remove

lock

washer

179.

Lift

off

main

lever

178

and

bearing

support

177.

Remove

lock

washer

191.

Lift

off

setting

raie

191

and

rotary

bearing

189

and

turn

towards

motor

141.

4.

Unlock

tension

spring

187.

Loosen

lock

washer

184

and

re-

move skating

lever

183.

5.

Remove

lock

washer

173

and

slide

bar

172.

Lift

off

shut-off

bar

171

from

segment

185.

6.

Remove

hex

nut

168.

Remove

sink

screw

170.

Hold

tonearm

73

and

lift

off

counter

bearing

169

and

segment

188.

7.

Remove

tonearm

complete

with

tonearm

bearing.

Reverse

this

procedure

when

reassembling.

Please

bear

in

mind

the

threaded

pin

42

is

correctly

positioned

in

the

ball

bearing.

Fig.

10

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

42

and

that

of

the

vertical

tonearm

bearing

with

threaded

pin

45.

7

Fig.

11

Fitting

a

1/2

inch

cartridge

If

a

cartridge

with

1/2

inch

standard

mount

is

to

be

fitted,

the

conversion

kit

39

Number

262

186

is

necessary.

The

proper

me-

thod

of

fitting

is

shovvn

in

fig.11.

Also

the

decorative

cover

should

be

removed

from

the

counter-

weight

40

and

should

be

fitted

with

the

compensatory

weight

to

be

found

in

the

conversion

kit

39.

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.

Anti

skating

Device

To

compensate

for

skating

force

use

the

knurled

ring

76.

The

asymmetric

cam

plate

displaces

the

skating

lever

183

from

the

tonearm

pivoting

point.

The

anti-skating

force

is

transmitted

to

the

segment

185

and

to

the

tonearm

73

by

tension

spring

187.

Optimum

adjustment

is

carried

out

at

the

factorys

for

styli

having

a

tip

radius

of

15

prn

(conical),

5/6

and

18/22

pm

(ellipti-

cal).

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.

Cue

Control

By

moving

the

lever

203

forvvard

(

V1

lift

cam

204

rotates.

The

slide

bar

190

transmits

the

lifting

m

—

ovement

to

the

lift

pin,

that

raises

the

tonearm.

As

a

result,

the

cue

control

permits

raise

up

the

tonearm

at

any

desired

point.

The

lever

is

released

by

moving

the

cue

control

lever

rear

wards

(

I/.

As

a

result

of

the

action

of

compression

spring

181

the

lift

pin

is

brought

back

to

its

normal

position

and

the

tonearm

lovveres

slovvly

Lovvering

of

the

tonearm

is

damped

by

silicone

oi

l

in

the

lift

tube.

The

lift

can

be

varied

by

turning

the

sleeve

60.

The

distance

between

the

record

and

the

needle

should

be

5.

7

mm.

Replacement

of

Cue

Control

Plate

Replace

cue

control

plate

163

as

follows:

1

Clamp

unit

in

the

repair

jig.

and

lock

tonearm.

Turn

unit

in

heacr

position.

2

Remove

safety

washer

179.

Lift

off

main

lever

178

and

bearing

support

177.

3

Remove

safety

washer

191.

Lift

off

positioning

bar

190

and

rotary

bearing

189

and

turn

towards

motor

141.

4

Remove

both

machine

screws

195,

remove

lift

plate

compl.

163.

For

instal

lation

proceed

in

the

reverse

order.

Mut

ing

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

camvvheel.

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.

8

Tonearm

Control

Automatic

movement

of

the

tonearm

is

initiated

by

the

control

cams

on

the

inside

of

the

cam

wheel

5

on

rotating

through

360

0

.

The

control

elements

for

raising

and

lowering

are

the

main

lever

178

and

lifting

bolt

for

horizontal

movement

the

main

lever

178

with

segment

185.

The

automatic

tonearm

set

down

mechanism

is

designed

for

30

cm

and

17

cm

records and

is

coupled

to

the

platter

speed

changeover.

The

setdown

points

of

the

tonearm

are

determined

by

the

spring

pin

of

segment

185

contacting

the

slide

bar

190.

Limitation

of

the

horizontal

movement

of

the

tonearm

is

pro-

duced

by

the

pin

of

segment

contacting

the

stop

attached

to

the

slide

bar

190.

Only

during

set-down

does

main

lever

178

lift

the

slide

bar

190

and

the

stop

attached

to

lt

which,

as

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

is

released

again

and

returns

to

its

neutral

posi-

tion.

As

a

result,

the

slide

bar

moves

out

of

the

swivel

range

of

the

pin,

so

that

unimpeded

movement

of

the

tonearm

is

possible

for

playing.

Start

Switching

the

switch

lever

68

into

the

"start"

position

initiates

the

following

sequence:

a)

The

Solenoid

rotates

the

switch

lever

147

which

is

pivoted

about

the

notched

stud.

At

the

same

time,

the

switch

arm

53

is

moved

the

motor

141,

via

the

power

switch

125,

and

the

platter

starts

turning.

b)

Operating

the

switch

lever

58

also

releases

the

start

slide

which

is

drawn

toward

the

cam

by

means

of

the

tension

spring

57.

By

that

the

shut-off

lever

engage

with

the

drive

Pinion

and

the

cam

turns.

Manual

start

The

latch

165

which

is

connected

to

the

switch

arm

53

engages

in

the

four-sided

plate

when

the

tonearm

is

moved

manually.

The

switch

arm

connects

the

mains

supply

to

the

motor

141

via

the

power

switch

125

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

bot

on

the

segment

185

engages

the

latch

165

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

74

to

"

co

".

The

rotary

knob

74

turns

the

switch

angle

220.

T

he

switch

rod

219

keep

the

change

lever

147

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

is

brought

to

the

"stop"

position

or

the

rotary

knob

74

to

position

"1".

Adjustment

Point

Pull

mains

plug.

Remove

platter

4.

Bring

rotary

knob

74

to

position

"co".

Turn

cam

wheel

to

central

position.

The

change

lever

147

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

223.

Stopping

When

control

lever

is

set

to

"stop

position

the

start

slide

58

which

is

pulled

towards

the

cam

by

means

of

tension

57,

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.

Fig.

14

Fig.

15

208

219

190

144

148147

204

197

19

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

178

after

every

start

(longer

end

of

the

guide

lever

towards

cam

wheel

centre).

The

shut-off

bar

171

is

guided

along

in

proportion

to

the

mo-

vement

of

the

segment

185.

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.

9

Fig.

16

Fig.

17

45

U/min

50Hz

45U/min

sollz

33

U/min

50Hz

33

Wmin

60Hz

Fig.

18

Fig.

19

73

164

111

11

1

111

1

1111111

111

,

1

1

111

1

111

11111" ...

-

111111111111

11

/

1111111

68

163

195

IMLIOM

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

5

is

moved

from

0

position

and

engage

with

the

drive

pinion

of

the

platter.

The

main

lever

178

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

55

of

the

switch

arm

can

run

into

the

cut-out

provided

at

the

cam

wheel

and

achate

the

povver

switch

125.

Adjustment

Points

Tonearm

set-down

point

The

set-down

point

can

be

varied

with

the

eccentric

bolt

192.

If

the

stylus

sets

down

onto

the

record

too

far

inside

or

outside

turn

eccentric

bolt

192

in

left

or

right

direction.

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

segment

185.

Tonearm

lifting

height

a)

Remove

the

mains

plug.

Guide

the

tonearm

73

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

adjust

ing

sleeve

164.

b)

Press

the

start

button

and

turn

the

platter

4

in

normal

direction

until

the

tonearm

73

reaches

its

highest

position.

The

tone

-

arm

should

now

have

a

vertical

play

of

approximatelly

1

—

2

mm

(measured

at

the

tonearm

post).

If

necessary,

slightly

turn

the

adjusting

sleeve

164.

Power

Switch

Turn

in

tonearm

73.

The

slide

127

of

the

power

switch

125

should

have

a

play

of

0.2

—

0.5

mm.

Adjust

by

bending

the

switch

arm

147.

Fig.

20

10