Dual 506 Manual de usuario

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Service

Manual

\()

Technical

data

Measured

values

Current

Line

Voltage

Drive

Power

consumption

Sterling

Time

Power

Consumption

Dual

506

Edition

December

1979

typical

values.

Rumble

and

wow

and

flutter

values

obtained

with

test

record.

AC

50

or

60

Hz,

changeable

by

changing

motor

pul

ley

110

—

125

V

or

220

—240

V,

changeable

Dual

8

-pole

synchronous

motor:

precision

flat

belt

for

flyvvheel

drive

approx.

10

watts

(to

each

nominal

speed)

approx.

2

seconds

at

33

1/3

rpm

at

220

V,

50

Hz:

approx.

75

mA

at

117

V,

60

Hz: approx.

140

mA

Platter

Non-magnetic,

detachable,

1.1

kg,

304

mm

Platter

speeds

33

1/3

and

45

rpm

Pitch

Control

Variation

at

both

platter

speeds.Adjustment

range

at

33

1/3

rpm

approx.

1

semitone

(6

%)

Speed

control

(monitoring)

with

stroboscope

for

platter

speeds

33

1/3

and

45

rpm,

adjustable

to

50

or

60

Hz.

Total

Wow

and

Flutter

DIN

±

0.07

%

WRMS

±

0.04

%

Rumble

Unweighted

48

dB

(according

to

DIN

45

500)

Weighted

70

dB

Tonearm

Torsion-resistant

tubular

aluminum

tonearm

in

fourpoint

gimbal

bearing

Tonearm

Bearing

Friction

vertical

0.07 mN

(0.007

g)

(related

to

stylus

tip)

horizontal

0.15

mN

(0.015

g)

Stylus

Pressure

from

0

-

30

mN

(0

-

3

g)

infinitely

variable

with

1

mN

(0-

1.5

g)

operable

from

5

mN

(0.5

g)

stylus

pressure

up

Cartridges

with

1/2

inch

screw-type

attachment.

These

can

be

fitted

with

the

special

accessories

no.

262

186

which

c,an

be

obtained

from

trade

dealers.

Adjustable

overhang

5

mm.

Weight

approx.

4.1

kg

Download from www.dual.de

Not for commerical use

Contents

Page

1

Specification

2

Audio

connection

diagram

3

Motor

and

drive

3

Speed

selection

3

Turntable

3

Belt

3

To

replace

the

motor

pulley

3

Tuning

to

the

Pitch

of

Tone

Level

4

Stroboscope

4

Tone

arm

with

bearings

4

To

remove

the

tone

arm

or

the

spring

housing

4

To

remove

tone

arm

complete

with

bearings

4

To

adjust

the

tone

arm

bearings

5

Fitting

a

1/2

inch

cartridge

5

Tone

arm

lift

5

To

adjust

the

tone

arm

liftheight

5

Anti-skating

device

5

To

replace

the

lift

plate

5

Starting

and

shutting-off

6

Adjustments

6

Segment

6

Pawl

6

Power

switch

6

Troubleshooting

6

Tone

arm

head

not

parallel

to

turntable

6

Turntable

does

not

start

6

Turntable

speed

unsatisfactory

6

Stylus

slips

from

record

groove

6

Tone

arm

improperly

lowered

6

—9

Replacement

parts

with

Exploded

view

10

Lubrication

NOTE:

The

item

numbers

referred

to

in

the

text

are

identical

with

those

in

the

illustrations,

the

exploded

voews,

and

in

the

parts

lists.

Fig.

1

Pick

-up

connection

diagram

Kontaktplatte

Contact

plate

Plaque

de

contacts

/ /

rot

red

rouge

rechter

Kanal

Kurzschl

ießer

Cynchstecker

DIN-Stecker

5-polig

right

channel

Muting

switch

phono

plug

DIN-plug

5

pin

Canal

droit

Court-circu

iteur

fiche

cynch

fiche

DIN

5

pöles

/

1

I I

I I

grün

/

green

/

vert

schwarz

/

black

/

negro

1.

blau

/

blue

/

bleu

/

\

weiß

/

white

/

blanc

linker

\

Kanal

left

channel

Canal

gauche

•

•

Masse

draht

Mass

lead

Mass

cäble

2

Fig.

2

Motor

and

Drive

Turntable

and

mechanism

are

driven

by

the

motor

132

in

(Fig.

16).

The

shaded-pole

motor

runs

vibration-free

in

radially

elastic

mounts

and

has

an

extremely

low

magnetic

leakage.

The

motor

speed

is

independent

of

voltage,

temperature,

and

load

variations.

lt

can

only

fluctuate

with

the

mains

frequency.

Two

motor

pulleys

adapt

to

the

mains

frequency

of

50

Hz

or

60

Hz

(see

pulley

116

in

Fig.

2).:

Part

no.

234

453

pulley

for

50

Hz

Part

no.

234

454

pulley

for

60

Hz.

The

driving

force

is

transmitted

to

the

turntable

by

the

belt

15.

Speed

Selection

To

adjust

the

turntable

speed

to

33

1/3

or

45

rpm,

the

belt

is

adjusted

to

the

one

or

the

other

step

of

the

motor

pulley

116

(see

Fig.

3).

This

is

done

by

operating

the

knob

16

that

will

shift

the

change-over

lever

into

the

desired

speed

Position

through

the

lever

101

and

the

spring

lever.

As

long

as

the

platter

is

turned

off,

the

change-over

lever

is

blocked

by

the

bar

12

and

the

speed

is

only

pre-selected.

As

soon

as

the

record

player

is

turned

on

and

the

turntable

7

starts

running,

the

blocking

bar

12

will

release

the

change-over

lever.

The

lauer

will

then

shift

the

belt

15

to

the

one

step

of

the

motor

pulley

116

that

corresponds

to

the

desired

speed.

Tumtable

The

turntable

7

is

fixed

to

the

turntable

bearing

tube

by

lock

tab

134.

To

remove

the

turntable,

lift

its

top

layer

through

one

of

the

cutouts

and

rotate

the

turntable

so

that

the

recess

is

above

the

motor

pulley.

Pull

the

belt

15

from

the

pulley

116

and

place

it

onto

the

turntable.

Rotate

the

latter

further

until

the

cutout

is

above

the

lock

tab

134.

Slacken

the

screw

133.

Press

the

holding

bar

134

outwards

and

remove

the

turntable

7.

Belt

To

replace

the

belt,

first

remove

the

turntable

as

above

described,

then

remove

the

belt

15.

Place

the

nevv

belt

on

the

pulley

part

of

turntable

7.

NOTE:

the

ground

(mat)

side

of

the

belt

should

face

the

pulley.

Install

the

turntable.

Place

the

belt

onto

the

motor

pulley

116.

To

Replace

the

Motor

Pulley

1.

Remove

belt

15

from

pulley

116

and

remove

the

turntable.

Remove

the

toothed

belt

109.

2.

Disengage

the

tension

spring

114

from

the

shield

122.

3.

Unscrew

the

hex.

nut

110.

Remove

the

set

cam

111,

belt

pulley

112,

and

counter

bearing

113.

4.

Slacken

the

grub

screws

117

and

slide

off

the

motor

pulley

116.

Place

the

replacement

pulley

onto

motor

shaft.

Remove

the

taper

sleeve.

Pay

attention

to

the

internal

distance

spring.

Position

the

motor

pulley

at

proper

height

above

the

mount-

ing

plane

—

see

Fig.

3—

and

uniformly

tighten

the

grub

screvvs

117.

Place

the

taper

sleeve

into

the

motor

pulley

116.

5.

Mount

the

counter

bearing

113,

the

belt

pulley

2

112,

and

the

setting

cam

111,

tighten

with

hex.

nut

110.

Replace

ten-

sion

spring

114

and

toothed

belt

109.

Mount

the

turntable

7.

Place

belt

15

onto

motor

pulley

116.

6.

To

adjust

the

rated

speed:

adjust

the

knob

16

to

its

mid

position.

Slacken

or

tighten

the

hex.

Nut

110

to

achieve

the

rated

speed.

Tuning

to

the

Pitch

of

Tone

Level

This

tuning

feature

is

independent

of

the

power

and

controls

both

turntable

speeds.

For

33

1/3,

the

control

range

is

max.

6%

or

about

1

seminote.

113

8

12

22

-117

------116

Fig.

4

110

111

112

109

114

117

119

115

Fig.

5

r

4

113

116

117

8

12

110

-125V

1

30

sw

3

Rotate

the

knob

16

to

move

the

belt

pulley

112.

This

rotary

motion

is

transmitted

by

the

toothed

belt

109

to

the

belt

pulley

1

105,

see

Fig.

2.

As

a

result,

the

counter

bearing

113

and

the

taper

sleeve

of

the

motor

pulley

116

are

shifted

up

or

down.

As

an

effect

of

the

taper

sleeve,

the

motor

pulley

diameter

is

reduced

or

increased,

respectively,

thus

permitting

to

change

the

rated

speed

within

the

range

of

±

3

%.

Stroboscope

Accurate

setting

of

the

platter

speeds

33

1/3

rpm

and

45

rpm

can

be

checked

during

play

with

the

aid

of

the

stroboscope

de-

vice.

On

the

platter

4

rotating

at

exactly

the

desired

speed,

the

lines

of

the

stroboscope

appear

to

stand

still.

If

the

lines

of

the

stroboscope

move

in

the

direction

of

the

platter

rotation,

the

platter

speed

is

too

high.

If

the

lines

move

backwards

the

platter

is

rotating

more

slowly

than

nominal

speed.

The

four

rows

of

stroboscope

marks

on

the

edge

of

the

platter,

taken

botton

to

top,

are

for

the

following

speeds:

331/3

rpmat

60

Hz,

331/3

rpm

at

50

Hz,

45

rpm

at

60

Hz,

45

rpm

at

50

Hz.

Adjustment

of

the

platter

speed

is

carried

out

using

the

regulating

knob

16.

Fig.

6

46

Fig.

7

55

39

41

207

Tone

arm

with

Bearings

The

light-weight

torsion-resistant

metal-tube

tone

arm

has

a

uni-

versal

gimbal

bearing

characterized

by

four

hardened

and

lapped

steel

points

located

in

high-precision

ball

bearings.

The

tone

arm

bearing

friction

is

thus

reduced

to

a

minimum,

namely

less

than

0.07

mN

or

0.007

gr

in

vertical

and

less

than

0.15

mN

or

0.015

gr

in

horizontal

direction

referred

to

the

stylus

point.

This

ensures

particularly

satisfactory

tracking

conditions.

Before

adjusting

the

tracking

force

in

compliance

with

the

pickup

system

used,

the

tone

arm

to

its

balanced

position

while

the

tracking-force

scale

is

in

the

zero

position.

For

coarse

balancing,

shift

the

weight

41,

for

fine

balancing,

rotate

the

weight.

The

tracking

force

is

produced

by

tensioning

the

helical

spring

located

in

the

spring

case

63.

The

latter

has

a

scale

with

marking

points

permitting

exact

adjustment

of

the

tracking

force

within

the

range

0-30

mN

(or

0

-

3

g).

To

Remove

the

Tone

arm

Complete

with

Bearings

1.

Mount

the

record

player

in

the

servicing

fixture.

Adjust

the

tracking-force

scale

54

to

zero.

Lock

the

tone

arm

40

in

place.

Remove

the

weight

41.

2.

Adjust

record

player

in

head

position.

Remove

shield

158.

Unsolder

the

tone

arm

leads

from

terminal

strip

156.

3.

Unhook

the

tension

spring

226

from

the

bearing

bracket

224.

Rotate

bearing

part

195

through

90

0

degrees

and

remove

it.

Detach

the

setting

bar

194.

4.

Unhook

the

tension

spring

214.

Remove

lock

washer

210

and

skating

lever

207.

5.

Remove

lock

washer

217

and

disk

216.

Detach

the

shut-

off

bar

215

from

the

segment

211.

6.

Slacken

the

hex.

nuts

213

and

the

screw

204.

Remove

the

bearing

205

and

the

segment

211.

7.

Grip

the

Frame

47

and

the

tonearm

40.

Loosen

the

machine

screw

48

and

take

off

the

tonearm

and

frame.

To

install

the

tone

arm,

proceed

in

reverse

sequence;

however,

make

sure

the

segment

211

is

properly

adjusted

as

described

on

page

6.

To

Remove

the

tonearm

or

the

spring

housing

1.

Secure

the

unit

in

a

repair

stand.

Turn

the

rotary

turn

switch

54

to

the

zero

position.

Lock

the

tonearm

40.

Remove

the

counterweight

41.

2.

Turn

the

unit

over.

Remove

the

screening

sheet

158

and

solder

off

the

tonearm

connections

at

the

connection

plate

156.

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

54

and

the

grub

screw

46.

Draw

the

tone

-

arm

40

complete

with

bearing

56

from

the

bearing

race

49.

The

spring

housing

52

or

the

tonearm

40

may

now

be

changed.

Reassembly

involves

the

reverse

procedure.

213

To

Adjust

the

Tone

arm

Bearings

211

Exactly

balance

the

tone

arm.

Both

bearings

should

have

a

small,

just

perceptible

backlash.

Proper

adjustment

of

the

horizontal

bearing

is

achieved

if

the

tone

arm

can

freely

slide

from

the

re-

cord

Inside

to

outside

while

the

anti-skating

adjustment

is

0.5.

Proper

adjustment

of

the

vertical

bearing

is

achieved

when

the

the

carefully

kicked

tone

arm

swings

into

balanced

position.

Adjust

the

backlash

by

grub

screws

46,

51

for

the

horizontal

and

vertical

bearing,

respectively.

194

215

4

Fig.

8

Fitting

a

1/2

inch

cartridge

If

a

cartridge

with

1/2

inch

standard

mount

is

to

be

fitted,

the

conversion

kit

44

Number

262

186

is

necessary.

The

proper

method

of

fitting

is

shown

in

fig.

8.

.

Also

the

decorative

cover

should

be

removed

from

the

counterweight

41

and

should

be

fitted

with

the

compensatory

weight

to

be

found

in

the

conversion

kit

44.

Anti-Skating

Device

To

adjust

the

anti-skating

force,

operate

the

pointer

scale

provi-

ded

on

the

cover

62.

Depending

on

this

adjustment,

the

non-

symmetric

cam

disk

will

guide

the

skating

lever

207

out

of

the

tone

arm

pivot

point.

The

anti-skating

force

is

transferred

by

the

tension

spring

214

to

the

segment

211

and,

hence,

to

the

tone

arm

40.

The

factory

adjustment

is

optimal

for

any

stylus

having

a

spheri-

cal

tip

radius

of

15

Um

or

an

elliptical

tip

radius

5/6

by

18/2211m.

These

factory-adjusted

vylues

may

be

varied

only

in

an

authori-

zed

Dual

service

workshop

using

a

Dual

Skate

-0

-Meter

and

a

test

record.

Tone

Arm

Lift

Move

the

lift

control

bar

219

to

the

front

(

V

)

or

LIFT

posi-

tion;

this

will

rotate

the

lift

cam

223

and

operate

the

setting

bar

194

and

the

lifting

bolt

that

will

lift

the

tone

arm.

In

this

way

the

tone

arm

can

be

lifted

from

or

lowered

on

any

point

of

the

record

except

in

the

shut-off

range.

Move

the

bar

219

to

the

rear

(

1)

or

LOWER

position;

this

will

release

the

setting

bar

176.

The

pressure

spring

184wi11

return

the

lifting

bolt

185

to

its

operating

position

and

the

tone

arm

50

will

be

loweredsofly,

braked

by

the

silicone

oil

in

the

lifter

tube.

To

Adjust

the

Lift

Height

Slightly

rotate

the

adjusting

sleeve

181.

The

stylus

should

be

lifted

from

the

record

by

5

to

7

mm.

To

Replace

the

Lift

Plato

1.

Fasten

the

record

player

in

the

service

jig

and

lock

lt

in

place.

2.

Adjust

record

player

to

head

position.

3.

Detach

the

tension

spring

226

from

the

bearing

bracket,

224.

Rotate

bearing

part

195

through

90

0

degrees

and

re-

move

it.

Remove

the

setting

bar

194.

4.

Detach

the

tension

spring

214,

slaken

the

lock

washer

217

and

remove

the

skating

lever

207.

5.

Remove

lock

washer

217

and

disk

216.

Detach

shut-off

bar

215

from

segment

211.

6.

Slacken

hex.

nuts

213

.and

screw

204.

Remove

counter

bearing

205

and

segment

211.

Remove

lock

washer

188

and

disc

187,

disengage

pawl

186.

7.

Remove

screw

183,

and

remove

lift

plate

assy.

182.

To

replace

the

lift

plate

182,

proveed

in

reversed

sequence,

but

look

for

proper

Adjustments

(described

below)

when

you

fix

the

segment

211.

Starting

and

Shutting

Off

Swinging-in

of

the

tone

arm

40

causes

rotation

of

segment

211.

As

a

result,

pawl

164

and

shift

arm

172

will

operate

the

power

switch

143

causing

the

motor

123

and

turntable

7

to

rotate.

After

the

record

has

been

played,

the

dog

M

of

the

turntable

(Fig.

11

b)

will

operate

the

shut-off

lever

34.

During

play-back,

the

shut-off

bar

215

is

dragged

in

proportion

to

the

motion

of

segment

211.

For

records

116

to

122

mm

in

diameter,

the

shut-off

lever

34

is

gradually

pushed

to

dog

M

by

the

shut-off

bar

215

in

the

shut-off

range,

see

Fig.

10.

When

the

dog

M

con-

tacts

the

shut-off

lever

A,

the

c,arrier

37

will

move

the

shift

arm

172

to

its

zero

position

and

the

power

switch

will

interrupt

the

supply.

At

the

same

time

the

lift

bar

218

coupled

to

the

shift

arm

172

will

operate

the

tone

arm

lift

and

the

tone

arm

40

will

be

lifted.

1

I

1

1

Fig.

9

Fig.

10

5

Adjustments

Fig.

11

1.

Segment

a)

Lock

the

tone

arm

50

in

place.

Record

player

in

head

Posi-

tion.

Moreover,

a

play

of

0.3

zo

0.5

mm

should

be

provided

between

the

pawl

186

and

the

stop

A

of

segment

211,

adju-

stable

by

slackening

the

hex.

nuts

213

and

shifting

the

segment

211.

b)

The

excenter

S

on

segment

211

can

be

used

to

vary

the

shut-

off

point

for

records

116

to

122

mm

in

diameter.

2.

Pawl

Swing-

in

the

tone

arm

40.

Make

sure

there

is

a

play

of

0.2

to

0.5

mm

between

stop

pin

B

of

the

shift

arm

172

and

the

deck

plate

22.

If

necessary,

adjust

by

rotation

of

excenter

E.

3.

Power

Switch

Disconnect

mains

plug.

Swing

the

tone

arm

40

back

to

its

support.

Power

switch

143

must

not

turn

off

before

the

tone

arm

has

reached

a

position

about

3

mm

in

front

of

the

support.

If

necessary,

adjust

by

bending

the

shift

arm

172.

Defekt

Turntable

does

not

start

Cause

a)

Belt

15

is

not

in

place:

mount

the

belt.

b)

Motor

132

is

not

powered:

check

switch

base

142

and

mains

Plug.

c)

Motor

pulley

116

has

come

loose:

tighten

it.

Turntable

speed

unsatis-

a)

Motor

pulley

116

not

in

factory

compliance

with

meins

fre-

quency:

exchange.

b)

Belt

15

slipping

on

pulley

116

or

turntable

7:

clean

all

surfaces

in

contact,

if

necessary

replace

belt

15.

c)

Rated

speed

maladjusted:

readjust.

Stylus

slides

out

of

playing

groove

Tonearm

does

not

set

down

on

record

or

lowers

too

quickly

when

operating

the

cue

control

lever

190

Replacement

parts

Steel

ball

166

of

shut-off

bar

166

mis-

sing

Excessive

or

insuffidient

damping

es

a

result

of

contamination

of

the

silicone

oil

in

the

lift

tube

Pos.

Part.-No.

Qty.

Description

e

CO

S

CO

Cs1

e

co

cr)

0.-CN

NCNCNN

214

054

1

Washer

220

213

1

Centering

piece

263

375

1

Turntable

lining

263

377

1

Turntable

cpl.

234

428

1

Carrier

cpl.

210

472

1

Fillister

head

screw

M

3

x

4

210

586

1

Washer

3.2

232

086

1

Tension

spring

237

220

1

Locking

rail

cpl.

240

000

1

Tension

spring

210

194

1

Grip

ring

246

084

1

Flat

belt

260

461

1

Control

knob

239

270

1

Bearing

bush

260

297

1

Speed

lever

263

378

1

Speed

cover

213

260

3

Grooved

drive

stud

3

Transport

lock

9.31

'

-

11'?

237

111

263

379

1

Built-in

plate

cpl.

237

226

1

Spring

suspension

cpl.

(motor

side

rear)

Repair

a)

Belt

15

is

not

in

place:

mount

the

belt.

b)

Motor

132

is

not

powered:

check

switch

base

142

and

meins

blug.

c)

Motor

pulley

116

has

come

loose:

tighten

it.

a)

Motor

pulley

116

not

in

compliance

with

mains

frequen-

cy:

exchange.

b)

Belt

15

slipping

on

pulley

116

or

turntable

7:

clean

all

sur-

faces

in

contact,

if

necessary

replace

belt

15.

c)

Rated

speed

maladjusted:

readjust.

Renew

steel

bell

Referring

to

page

remove

cue

control

plate

182.

Remove

ad-

justment

bush

sleeve

181.

Remove

lift

pin

185

and

compression

spring

184.

Clean

lift

tube

and

lift

pin.

Smear

lift

pin

evenly

with

"Wacker

Silicone

Oil

AK

500

000

.

Reassemble

components.

Pos.

Part.-No.

Qty.

Description

237 227

1

Spring

suspension

cpl.

(motor

right

front)

237

228

1

Spring

suspension

cpl.

(pick

-up

arm

side

rear)

237

229

1

Spring

suspension

cpl.

(pick

-up

arm

side

front)

24

230

529

4

Threaded

coupling

25

236

710

1

Pressure

spring

(motor

side

rear)

236

711

1

Pressure

spring

(motor

side

front)

236

712

1

Pressure

spring

(pick

-up

arm

side

rear)

236

713

1

Pressure

spring

(pick

-up

arm

side

front)

26

200

725

4

Rubber

absorber

27

200

722

4

Pot

33

210

142

1

Locking

washer

1.2

34

234

766

1

Throw-off

lever

35

210

146

1

Locking

washer

3.2

36

234

764

1

Friction

plate

37

234

762

1

Carrier

39

260

428

1

Clamping

screw

6

Pos.

Part.-No.

Qty.

Description

40

264

020

1

Tonearm

cpl.

41

.

-2Er3

-

2133'

1

Weight

cp1.2

G

3

4

/`

C

I

42

263

258

1

Tonearm

head

cpl.

43

261

929

1

Tonearm

head

cpl.

44

262

186

1

1/2

inch

conversion

kit

45

249

383

1

Counter

nut

46

234

651

1

Grub

screw

47

263

081

1

Frame

cpl.

48

242

677

1

Fillister

head

screw

M

4

x

8

50

246

884

1

Counter

nut

51

234

634

1

Grub

screw

52

263

329

1

Bearing

frame

53

261

798

1

Washer

54

248

989

1

Rotory

knob

55

249

097

1

Raised

countersunk

head

screw

M

2.5

x

12

56

263

340

1

Bearing

cpl.

57

263

331

1

Spring

housing

58

236

069

1

Fillister

head

screw

59

260

135

1

Lifting

plate

60

210

597

1

Washer

3.2/8/0.5

61

262

294

1

Screw

B

2.9

x

6.5

62

263

380

1

Rear

cover

63

200

444

7

Spring

washer

64

260

320

1

Cam

disc

65

242

298

1

Washer

66

228

113

1

Washer

4.2/8/1

67

210

146

1

Locking

washer

68

260

328

1

Stroboscopprisma

69

263

381

1

Front

cover

70

263

334

1

Tonearm

rest

cpl.

100

210

145

4

Locking

screw

2.3

101

234

824

1

Switch

lever

102

236

374

1

Clip

spring

103

232

094

1

Connection

part

104

232

079

1

Shouldered

nut

105

232 097

1

Belt

wheel

II

106

240

035

1

Washer

107

210

607

1

Washer

3.2/10/0.5

108

210

362

1

Hex

nut

M3

109

232

076

1

Toothed

belt

110

244

104

1

Hex

nut

M3.5

111

241

641

1

Control

curve

112

241

642

1

Belt

wheel

I

113

241

644

1

Abutment

114

233

777

1

Tension

spring

115

232

615

1

Pressure

spring

116

234

453

1

Drive

roller

cpl.

50

Hz

234

454

1

Drive

roller

cpl.

60

Hz

117

233

137

1

Grub

screw

M

2.5

x

3

118

210

366

3

Hex

nut

119

210

480

1

Fillister

head

screw

M

3

x

6

120

210

609

1

Washer

3.2/10/1

121

241

328

1

Screen

plate

122

232

841

3

Buffer

123

232

840

1

Insert

plate

124

241

570

1

Upper

bearing

stay

126

209

939

1

Sleeve

127

242

587

1

Stator

110/220

V

cpl.

128

233

815

1

Fillister

head

screw

M

2.5

x

18

129

241

571

1

Anchor

cpl.

130

241

572

1

Lower

bearing

stay

131

210

525

2

Fillister

head

screw

M

4

x

25

132

263

382

1

Motor

SM

860/5

110/220V

cpl.

133

210

472

1

Fillister

head

screw

M

4

x

6

134

237

970

1

Holding

raul

136

241

885

1

Capacitor

10

n

F/250

V

242

822

1

H

F-coche

47

pH

137

237

236

1

Bearing

casing

cpl.

138

236

759

1

Earthing

spring

139

210

515

3

Fillister

head

screw

M

4

x

6

140

236

335

1

Slide

141

200

444

1

Spring

washer

142

233

012

1

Switch

panel

cpl.

143

242

581

1

Mains

switch

cpl.

144

239

732

1

Tension

spring

Pos.

Part.-No.

Qty.

Description

145

230

148

1

Switch

angle

146

219

200

1

Catch

spring

147

242

095

1

Cover

148

210

498

1

Fillister

head

scFew

M

3

x

28

149

231

079

1

Cable

clamps

cpl.

150

214

602

1

Socket

AMP

151

232

996

1

Mains

lead

Europe

152

232

995

1

Mains

lead

USA

153

207

301

1

Phono

pick

-up

cable

Cynch

154

209

426

1

Cynch

plug

bleck

155

209

425

1

Cynch

plug

white

156

237

238

1

Pick

-up

connection

plate

157

210

480

2

Fillister

head

screw

M

3

x

5

158

236

080

1

Screen

plate

159

210

480

2

Fillister

head

screw

M

3

x

5

165

236

950

1

Stop

bush

166

209

357

1

Ball

3.2

167

232

104

1

Ball

bed

168

210

469

2

Fillister

head

screw

AM

3

x

3

170

210

626

1

Washer

4.2/7/0.5

172

234

756

1

Switch

arm

173

210

146

3

Locking

washer

3.2

174

210

196

1

Grip

ring

175

234

760

1

Engaging

lever

176

234

799

1

Tension

spring

177

237

785

1

Wire

spring

178

210

586

1

Washer

179

234

759

1

Screw

bolt

181

234

800

1

Adjustable

adaptor

182

263

383

1

Lift

plate

cpl.

183

210

472

1

Fillister

head

screw

AM

3

x

4

184

234

798

1

Pressure

spring

185

234

795

1

Lift

bolt

186

234

786

1

Catch

187

210

643

1

Washer

4.2/12/1

188

210

145

4

Locking

washer

2.3

189

234

789

1

Leg

spring

190

210

146

3

Locking

washer

3.2

191

210

469

2

Fillister

head

screw

M

3

x

3

192

237

969

1

Bearing

angle

193

237

974

1

Pressure

spring

194

263

721

1

Adjusting

raul

195

237

975

1

Bearing

segment

199

209

436

4

Flat

plug

200

263

336

1

Stroboscope

cpl.

201

249

092

1

Glow

plate

202

260

421

1

Glow

lamp

203

210

469

2

Fillister

head

screw

M

3

x

3

204

203

475

1

Contersunk

screw

M

3

x

8

205

242

615

1

Counter

bearing

cpl.

207

244

331

1

Skating

lever

210

210

146

3

Locking

washer

211

263

384

1

Segment

212

201

184

1

Adjusting

washer

213

210

362

2

Hex

nut

M3

214

218

591

1

Tension

spring

215

234

807

1

Switch-off

raul

216

201

187

1

Sliding

washer

217

210

145

1

Locking

washer

218

234

780

1

Lifting

rail

219

240

893

1

Grip

hub

cpl.

220

237

543

1

Rubber

bush

221

234

778

1

Torsion

spring

223

234

777

1

Stroke

curve

224

237

972

1

Bearing

stay

226

233

710

1

Tension

spring

227

210

469

2

Fillister

head

screw

M

3

x

3

232

209

424

1

5

-pole

plug

DIN

233

207

303

1

Phono

pick

-up

cable

cpl.

261

952

1

CK

28

walnut

console

cpl.

261

953

1

CK

28

agate

black

console

cpl.

261

954

1

CK

28

agate

brown

console

cpl.

227

986

1

CH

6

Cover

260

480

1

Operating

instructions

261

833

1

Operating

instructions

UAP

260

491

1

Shipping

carton

CS

7

Alterations

reservedl

Fig.

13

Exploded

view

2

0_

L

_.

_

_

_.__J

r

-

—

1

211,

Lid

8

Dual

Fig.

12

Exploded

view

1

0

PI

en"

0-

-

0

0

_c)

41111Pr

-

_-8

-

-0

4,

i

I____

_i

1)

I

I

1

7

1 1

1_

\,

e

1

i

1

i

9

Lubrication

All

bearing

and

friction

points

of

the

unit

are

adequately

lubricated

at

the

works.

Replenishment

of

oil

and

grease

is

only

necessary

after

approximately

2

years

of

normal

use

of

the

record

player

as

the

most

important

bearing

points

(motor

bearings)

have

sintered

metal

bushes.

Bearing

points

and

friction

faces

should

be

lubricated

sparingly

rather

than

generously.

lt

is

important

that

no

oil

grease

should

come

in

contact

with

the

friction

faces

of

the

flat

belt,

drive

pulley

and

flywheel

rotor,

otherwise

slip

will

occur.

When

using

different

lubricants,

chemical

decomposition

can

of-

ten

take

place.

To

prevent

lubri-

cation

failure

we

recommend

us-

ing

the

original

lubricants

stated

below.

A

Dual

Renotac

No.

342

adhesive

oil

BP

Super

Viscostatic

10

W/30

Shell

Alvania

No.

2

lsoflex

PDP

40

Silicone

oil

AK

500

000

Fig.

14

Dual

Gebrüder

Steidinger

7742

St.

Georgen/Schwarzwald

920

642-2

5.2/1279

Printed

in

Germany

by

Dual