Dual 522 Manual de usuario

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Service

Manual

Technical

data

Current

Line

Voltage

Drive

Power

consumption

Starting

Time

Power

Consumption

Platter

Platter

speeds

Pitch

Control

Variation

Speed

control

monitoring

Sensitivity

of

the

strobe

for

0.1

%

speed

deviation

Total

VVow

and

Flutter

Rumble

(according

to

DIN

45

500)

Tonearm

Effective

Length

of

Tonearm

Offset

Angle

Tangential

Tracking

Error

Tonearm

Bearing

Friction

(related

to

stylus

tip)

Stylus

Pressure

Cartridges

VVeight

Measured

values

=

typical

values.

Rumble

and

wow

and

flutter

values

obtained

with

test

record.

AC

50

or

60

Hz,

changeable

by

changing

motor

pulley

115

or

230

V,

changeable

Dual

16

-pole

synchronous

motor:

flat

belt

for

flywheel

drive

approx.

8

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

Non-magnetic,

detachable,

1

kg,

304

mm

0

33

1/3

and

45

rpm

at

both

platter

speeds

Adjustment

range

at

33

1/3

rpm

approx.

1

semitone

(6%)

with

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.

DIN

±

0.07

%

WRMS

±

0.04

%

Unweighted

48

dB

Weighted

70

dB

Torsion-resistant

tubular

aluminium

tonearm

in

four-point

gimbal

bearing

221

mm

24°

4'

0.16

0

/cm

vertical

0.07

mN

(0.007

g)

horizontal

0.15

mN

(0.0159)

from

0

—

30

mN

(0

—3

g)

infinitely

variable

with

1

mN

(1/109)

calibrations

from

0

—

15

mN

(0

—

1.5

g)

operable

from

5

mN

(0.59)

stylus

pressure

up

with

1/2

inch

screw-type

attachment.

These

can

be

fitted

with

the

special

accessories

no.

262

186

which

can

be

obtained

from

trade

dealers.

4.1

kg

Dual

522

Edition

January

1980

•

Download from www.dual.de

Not for commerical use

Table

of

Contents

Page

1

Specification

3

Motor

and

drive

3

Speed

selection

3

Turntable

3

Belt

3

To

replace

the

motor

pulley

4

Stroboscope

4

Tuning

to

the

pitch-of-tone

level

4

Tone

arm

with

bearings

4

To

remove

tone

arm

complete

with

bearings

5

To

remove

the

tonearm

or

the

spring

housing

5

To

adjust

the

tonearm

bearings

5

Fitting

1/2

inch

pick

-up

5

Anti-skating

device

5

Tone

arm

lift

5

To

replace

the

lift

plate

5

Tone

arm

control

6

The

starting

sequence

6

Manual

start

6

Continuous

play

6

Mut

ing

switch

6

Final

shutting-off

7

Stop

circuit

7

Adjustments

7

Tone

arm

set-down

point

7

Set

-down

point

for

30

-cm

records

7

Set

-down

point

for

17

-cm

records

7

Shut-off

point

7

Tone

arm

lift

height

8

Troubleshooting

8

Tone

arm

improperly

lowered

8

Acoustic

feedback

8

Rated

speed

borders

pitch

adjustment

range

8

Turntable

does

not

start

8

Turntable

speed

unsatisfactory

8

—

11

List

of

spare

parts

and

Exploded

view

12

Lubrication

NOTE:

The

item

numbers

mentioned

in

the

text

refer

to

the

illu-

strations,

exploded

views

and

Parts

List.

Fig.

1

Audio

Connection

Diagram

Kontaktplatte

Contact

plate

Plaque

de

contacts

rechter

Kanal

Kurzschließer

Cynchstecker

DIN-Stecker

5-polig

right

channel

Muting

switch

phono

plug

DIN-plug

5

pin

Canal

droit

Court-circuiteur

flehe

cynch

fiche

DIN

5

pales

rot

/

red

/

rouge

/

I

I

I

grun

/

green

/

vert

I

schwarz

/

black

/

negro

blau

/

blue

/

bleu

(\

/

1

I I

I I

I

I

weiß/

white

/

blanc

‘ i

linker

Kanal

left

channel

Canal

gauche

•

•

•

Masse

draht

Mass

lead

Mass

cäble

2

tp.

Motor

and

Drive

Turntable

and

mechanism

are

driven

by

the

motor

130.

This

shaded-pole

motor

runs

vibration-free

in

radially

elastic

mounts

and

has

extremely

low

magnetic

leakage.

The

motor

speed

is

independent

of

voltage,temperature,and

load

variation.

lt

can

only

fluctuate

with

the

mains

frequency.

Two

motor

pulleys

permitadaptation

to

the

mains

frequency

of

either

50

or

60

Hz;

one

pulley

116

is

showin

in

both

Fig.

2

and

Fig.

3.

For

50

Hz

use

the

pulley

part

no.

261

938,

for

60

Hz

use

the

pul

ley

part

no.

261

939.

The

driving

force

is

transmitted

to

the

turntable

14

by

belt

17.

Speed

Selection

To

adjust

the

turntable

speed

to

either

33

1/3

or

45

rpm,

the

belt

17

is

shifted

to

the

one

step

of

pulley

116

with

the

associated

diameter

(see

Fig.

3).

This

is

achieved

when

you

adjust

the

speed

lever

20

so

that

the

START/STOP

lever

and

the

spring

lever

will

move

the

change-over

lever

into

the

desired

(33

or

45

rpm)

Posi-

tion.

When

the

record

player

is

turned

off,

,

the

changeover

lever

is

blocked

by

the

blocking

bar

and

the

speed

is

just

preselected.

Only

when

the

turntable

14

starts

running,

the

blocking

bar

8

will

release

the

change-over

lever.

The

latter

will

then

shift

the

belt

17

to

that

step

of

motor

pulley

116

which

corresponds

to

the

desired

speed.

Platter

The

platter

is

secured

to

the

securing

disc

5

by

the

bayonet

catch.

When

removing

the

platter

14

press

the

securing

disc

lightly

downwards

and

turn

it

approximately

60°

to

the

right

until

it

is

felt

to

dick

out

of

position.

Belt

To

replace

the

belt

17,

first

remove

the

turntable

as

above

des-

cribed,

then

separate

the

belt

from

the

turntable

14.

Mount

the

new

belt

on

the

turntable.

NOTE:

the

ground

(mat)

surface

of

the

belt

should

face

the

driven

part.

Install

the

turntable

and

place

the

belt

17

over

the

motor

pulley

116.

To

Replace

the

Motor

Pulley

1.

Separate

the

belt

17

from

pulley

116

and

remove

the

turn-

table.

Remove

the

toothed

belt

109.

2.

Disengage

the

tension

spring

114

from

the

shield

122.

3.

Unscrew

the

hex.

nut

111,

remove

the

setting

cam

112,

belt

pulley

113,

and

counter

bearing

114.

4.

Slacken

the

grub

screws

117

and

slide

off

the

motor

pulley

116.

Slide

the

replacement

pulley

onto

the

motor

shaft.

Remove

the

taper

sleeve.

Pay

attention

on

the

internal

distan-

ce

spring.

Position

the

motor

pulley

116

at

proper

height

above

the

mounting

plane,

see

Fig.

3.

Uniformly

tighten

the

grub

screws

117.

Put

the'taper

sleeve

into

the

motor

pulley

116.

5.

Mount

the

counter

bearing

114,

the

belt

pulley

113

and

the

setting

cam

112

and

secure

them

in

place

with

hex.

nut

111.

Install

the

tension

spring

122

and

the

toothed

belt

109.

Mount

the

turntable.

Pull

the

belt

17

and

place

it

around

the

motor

pulley

116).

6.

Turn

the

knob

18

to

adjust

the

beit

pulley

to

lts

mid

posi-

.

tion.

(The

nose

of

the

belt

pulley

113

should

point

to

the

motor

pulley

center

line.)

Adjust

the

hex.

nut

111

to

the

rated

speed;

the

speed

increases

when

you

turn

the

nut

clock-

wise

and

vice

versa.

Fig.

2

1820

227,7ev

d

r

-

i

•

„

ma

Fig.

3

33%

U/min

45

U/min

Fig.

4

Strob

17

15,8mm

27

117

116

Strob

3

Fig.

6

Fig.

7

109

103

45

200

18

2

113

111

114

116

Stroboscope

Even

during

the

play

mode

the

stroboscope

can

be

used

to

check

the

accuracy

of

the

turntable

speed

adjustment

to

33

1/3

and

45

rpm.

Accurate

adjustment

is

manifested

by

seemingly

motionless

bar

marks

of

the

stroboscope.

If

the

marks

run

in

the

same

direction

as

the

turntable,

the

speed

is

too

high

and

vice

versa.

To

vary

the

adjustment,operate

the

"pitch"

knob

18.

The

strobo

marks

on

the

turntable

rim,

have

the

following

meanings

(starting

from

the

lowest

row):

33

1/3

rpm

at

60

Hz,

33

1/3

rpm

at

50

Hz.

To

exchange

the

glow

lamp

GI

131,

remove

the

screws

234

and

the

strobo

case.

Pitch

Control

This

feature

is

independent

of

the

power

and

controls

both

turn-

table

speed.

The

tuning

range

is

max.

6

%

or

about

one

semi-

note.

When

you

rotate

the

knob

18,

you

will

move

the

belt

pulley

2

105.

This

motion

will

be

transferred

by

the

toothed

belt

109

to

the

belt

pulley

1

113.

As

a

result,

the

counter

bearing

114

and

taper

sleeve

of

motor

pulley

116

are

shifted

upwards

or

down-

wards,

respectively.

The

taper

sleeve

of

the

motor

pulley

116

causes

the

pulley

diameter

to

be

reduced

or

increased,

which

permits

the

variation

of

the

rated

speed

within

the

said

range

of

±

3

%.

Tone

Arm

with

Bearings

The

I

ight-weight

torsion-resistant

aluminum-tube

tone

arm

has

a

62

universal

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

0r0,007

gr

in

vertical

and

less

than

0,15

mN

or

0,015

gr

in

horizontal

direction,

referred

to

the

stylus

po

int.

This

ensures

particuiarly

satisfactory

tracking

conditions.

Before

adjusting

the

tracking

force,which

should

comply

with

the

pick

-

67

up

system

used,

adjust

the

tone

arm

to

its

balanced

position

while

the

tracking-force

scale

indicates

zero.

The

tracking

force

is

produced

by

tensioning

the

helical

spring

located

in

the

spring

case

62.

The

rotary

turn

knob

60

has

a

scale

201

with

marks

permitting

exact

adjustment

of

the

tracking

force

within

the

range

0-30

mN

lor

0—

3

gr).

Z

LI-

N

209

202

60

To

Remove

the

tonearm

complete

with

the

tonearm

bearing

We

recommend

the

following

procedure:

1.

Secure

the

unit

in

a

repair

stand.

Turn

the

rotary

turn

switch

60

to

the

zero

position.

Lock

the

tonearm

38.

Remove

the

counter-weight

55.

2.

Adjust

record

player

to

head

position.

Remove

the

shield

160.

38

Unsolder

the

tone

-arm

leads

from

muting

switch.

3.

Remove

the

main

lever

177.

Remove

the

lock

washer

242.

Rotate

the

set

screw

26

until

guide

bearing

241

and

setting

ting

bar

228

come

free.

Remove

lock

washer

228

and

setting

bar

204.

4.

Unlock

the

tension

spring

212,

loosen

the

lock

washer

216

and

remove

skating

lever

215.

5.

Remove

lock

washer

202

from

segment

200.

6.

Remove

hex.

nuts

209

and

the

screw

202.

Remove

the

bearing

200

201

and

the

segment

200.

7.

Grip

the

frame

44

and

the

tonearm

38.

Loosen

the

machine

screw

45

and

take

off

the

tonearm

and

frame.

Reassembly

of

the

tonearm

involves

the

reverse

procedure.

Take

care

that

the grub

screw

43

is

correctly

seated

in

the

bearing

when

when

fastening

the

frame

44.

4

Fig.

10

To

Remove

the

tonearm

or

the

spring

housing

1.

Secure

the

unit

in

a

repair

stand.

Turn

the

rotary

turn

switch

60

to

the

zero

position.

Lock

the

tonearm

38.

Remove

the

counterweight

55.

2.

Turn

the

unit

cover.

Remove

the

screening

sheet

160

and

solder

off

the

tonearm

connections

at

the

muting

switch.

Turn

the

unit

the

right

way

up.

3.

Remove

the

fillister

head

screw

61.

Remove

the

rotary

turn

switch

60

and

the

washer

59.

4.

Loosen

the

nut

56

and

the grub

screw

57.

Draw

the

tone

-

arm

38

complete

with

bearing

63

from

the

bearing

race

58.

The

spring

housing

62

or

the

tonearm

37

may

now

be

changed.

Reassembly

involves

the

reverse

procedure.

To

Adjust

the

Tone

Arm

Bearings

Exactly

balance

the

tone

arm.

Both

bearings

should

have

a

small,

just

perceptible

backlash

or

play.

Proper

adjustment

of

the

hori-

zontal

bearing

is

achieved

if

the

tone

arm

can

freely

slide

from

the

record

inside

to

outside

while

the

anti-skating

adjustment

is

0.5.

Proper

adjustment

of

the

vertical

bearing

is

achieved

when

the

carefully

kicked

tone

arm

swings

into

balanced

position.

Adjust

the

backlash

by

grub

screws

43

and

57

for

the

horizontal

and

vertical

bearing,

respectively.

Fitting

a

1/2

inch

cartridge

If

a

cartridge

with

1/2

inch

standard

mount

is

to

be

fitted,

the

conversion

kit

Number

262

186

is

necessary.

The

proper

method

of

fitting

is

shown

in

fig.

.

Also

the

decorative

cover

should

be

removed

from

the

counter-

weight

55

and

should

be

fitted

with

the

compensatory

weight

to

be

found

in

the

conversion

kit

41.

Coarse

adjustment

is

carried

out

by

moving

the

weight

with

stem

38

subsequent

fine

adjustment

by

turning

the

front

knurled

ring

on

the

weight.

Anti-Skating

Device

To

adjust

the

anti-skating

force,

operate

the

pointer

scale

provided

on

the

cover

69.

Depending

on

this

adjustment,

the

skating

lever

215

will

be

deflected

from

the

tonearm

pivot

point.

The

anti-

skating

force

is

transmitted

by

the

tension

spring

212

to

the

seg-

ment

200

and

thus

to

the

tonearm

37.

The

factory

adjustment

is

optimal

for

any

stylus

having

a

spherical

tip

radius

of

15

pm

or

elliptical

of

5

-6

and

18

-22

lim.

These

factory-adjusted

values

may

be

varied

only

in

an

authorized

Dual

service

workshop

using

a

Dual

Skate

-0

-Meter

and

a

test

record.

Tone

Arm

Lift

When

you

move

the

lift

control

bar

218

to

the

LIFT

position

1,

the

tone

arm

will

be

lifted

and

in

position

LOWER

1

it

will

be

lowered

through

the

lift

cam

219

and

the

setting

bar

204.

The

tone

arm

lift

has

priority

over

the

set-down

mechanism.

When

the

record

player

is

started

with

the

control

bar

218

in

the

LIFT

posi-

tion

V

,

the

set-down

mechanism

will

move

the

tonearm

across

the

record

in

the

auto

mode.

Lowering

of

the

tonearm

will

take

place

only

after

you

have

adjusted

the

control

bar

218

to

the

POWER

position

1.

The

height

of

lift

should

be

3

to

5

mm;

it

can

be

adjusted

by

the

setscrew

26.

To

Replace

the

Lift

Plate

158

1.

Remove

the

main

lever

177

and

the

lock

washer

242.

Rotate

the

setscrew

26

until

guide

bearing

241

and

setting

bar

204

are

released.

Remove

lock

washer

228

and

setting

bar

204.

2.

Unlook

the

tension

spring

212.

3.

Remove

lock

washer

206

and

disk

205.

Detach

the

shut-off

bar

179

from

segment

200.

4.

Remove

hex.

nuts

202

and

the

screw

202.

Remove

the

segment

200

and

the

bearing

201.

5.

Remove

the

screws

198

and

the

lift

plate

199.

To

reassemble,

proced

in

reversed

order.

Fig.

11

204

242

241

179

206

s\L\

215

212

173

177

200

199

201

203

202

Tone

Arm

Control

The

tonearm

motions

for

auto

lowering

and

lifting

are

controlled

by

cams

under

the

cam

wheel

161

while

the

wheel

rotates

through

360

°

Lifting

and

lowering

motions

are

controlled

by

the

main

lever

177

and

lifting

bolt

while

the

horizontal

motions

of

the

tonearm

are

controlled

by

lever

177

with

the

segment

200.

The

lifting/lowering

mechanism

is

active

for

30

cm-

and

17

cm-re-

cords,

it

is

coupled

to

the

turntable-speed

change-over

function.

The

tonearm

set-down

points

are

determined

by

the

spring

pin

of

segment

200

abutting

against

the

setting

bar

204.

The

horizontal

motion

is

limited

by

the

segment

abutting

against

the

setting

bar

204

which

is

lifted

only

during

the

set-down

operation

by

the

main

lever

177

and

thus

comes

into

the

sluing

range

of

the

spring

pin

provided

on

the

segment.

5

After

the

tonearm

has

been

set

down

on

the

record,

the

setting

bar

204

is

released

and

returns

to

its

normal

position,

thus

esca-

ping

from

the

range

of

the

spring

pin.

The

tonearm

is

thus

free

to

move

in

horizontal

direction

during

the

play-back.

The

Starting

Sequence

When

you

adjust

the

START/STOP

lever

to

the

START

position,

the

turn-on

lever

207

is

rotated

to

the

outside

and

will

trigger

the

following

functions:

a)

The

turn-on

lever

207

rotates

the

shift

links

189

seated

on

the

riffled

pins

183.

At

the

same

time,

the

power

switch

is

turned

on

135

and

both

the

motor

130

and

turntable

start

rotating.

b)

The

shift

link

189

enters

the

range

of

the

reversing

lever

vvhich

is

forced

into

its

start

position

by

the

subsequent

rotation

of

the

cam

wheel

161.

c)

Operation

of

the

START/STOP

lever

50

will

also

release

the

start

angle

187

that

is

pulled

towards

the

cam

wheel

by

the

tension

spring

188.

The

shut-off

lever

is

thus

brought

into

the

range

of

dog

M

on

the

turntable

pinion

(PR)

and

the

cam

wheel

is

driven.

Manual

Start

When

the

tonearm

is

guided

towards

the

record

manually,

the

pawl

236

coupled

to

the

shift

arm

165

will

engage

with

the

square

bolt

mounted

in

the

deck

plate

and

will

keep

the

shift

arm

in

this

position.

Coupled

to

the

shift

arm

is

the

shut-off

lever

168

that

will

turn

on

the

power

switch

and

thus

initiate

the

turn-

table

rotation.

When

the

run-out

groove

of

the

record

played

has

been

reached,

the

tonearm

is

restored

and

the

record

player

is

turned

off

by

automatic

means.

If

you

lift

the

tonearm

before

the

end

of

play

and

put

it

back

onto

its

support,

the

bolt

of

seg-

ment

200

will

release

the

engaged

position

of

the

pawl

236

so

that

the

shift

arm

is

returned

to

its

initial

position

and

the

power

switch

will

tum

off.

Continuous

Play

This

mode

is

operative

when

you

have

adjusted

the

knob

66

to

co

.

The

knob

66

will

rotate

the

reversing

angle

231

and

the

latter

is

forced

into

the

starting

postion

by

the

turn-on

lever

207

at

the

end

of

record,

the

tonearm

is

restored

to

its

rest

position

on

the

support

near

the

record

rim.

This

procedure

will

be

repeated

unti

I

the

START/STOP

lever

50

is

adjusted

to

STOP

or

the

knob

66

is

adjusted

to

no.

1

position.

Muting

Switch

The

muting

switch

is

provided

to

avoid

noisy

lifting

and

lowering

of

the

tonearm

in

the

auto

made.

The

contact

springs

of

both

channels

are

controlled

by

the

cam

wheel.

The

resulting

short-cir-

cuiting

of

the

pickup

leads

is

ineffective

in

the

rest

state

of

the

record

player.

Adjustment

In

the

zero

position

of

the

cam

wheel,

a

contact

separation

of

about

0.5

mm

should

exist

between

the

contact

springs

(F)

and

the

shorting

straps

(L)

in

Fig.

14.

If

necessary,

bend

the

shorting

straps.

Maintain

contact

springs

in

good

state

by

a

spraying

agent.

Final

Shutting-off

The

shutting-off

and

stop

functions

are

controlled

by

the

reversing

lever

U.

Lever

U

is

brought

into

the

stop

position

by

the

main

lever

177

(longer

leg

of

the

reversing

lever

towards

the

cam

wheel

center).

The

shut-off

bar

179

is

dragged

during

the

play

in

propor-

tion

to

the

motion

of

segment

200.

The

shutting-off

Operation

after

the

end

of

record

is

triggered

by

the

dog

(M)

of

the

turntable

7

and

by

the

shut-off

lever

(A).

Fig.

12

Fig.

13

231

225

204

Fig.

14

191

207

186

204

179

6

In

the

shut-off

range

for

records

116

—

122

mm

in

diameter,

the

shut-off

lever

(A)

approaches

the

dog

under

control

of

the

shut-

off

bar

179.

The

dog

IM)

engages

with

lever

(A),

which

will

displa-

ce

the

cam

wheel

161

from

its

zero

position

and

make

lt

engage

with

the

pinion

(PR)

The

main

lever

177

returns

the

tonearm

that

can

then

lower

itself

on

its

support.

When

the

cam

wheel

runs

up

to

its

zero-engagement

position,

the

nose

186

of

the

shift

arm

can

run

into

the

recess

left

in

the

cam

wheel

and

operate

the

power

switch

135.

Stop

Circuit

Wen

you

adjust

the

lever

50

to

STOP,

the

start

angle

187

is

released

and

pulled

towards

the

cam

wheel

by

tension

spring

188.

As

a

result,

the

shut-off

lever

is

brought

within

the

range

of

the

dog

(M)

on

the

pinion

(PR)

of

the

turntable

and

the

cam

wheel

161

becomes

driven.

The

reversing

lever

remains

in

its

stop

position.

Adjustments

Tone

Arm

Set

-down

Point

Slightly

prey

up

the

nameplate

„Dual"

at

its

lower

left

corner

and

swivel

it

outwards

(Fig.

161.

The

now

accessible

opening

will

show

one

of

the

adjusting

screws.

Set

-down

Point

for

30

-cm

Records

Adjust

the

speed

selector

20

to

the

"45"

position

and

correct

adjustment

with

a

screwdriver.

If

the

stylus

sets

down

too

fa

.

r

on

the

record

inside,

rotate

the

adjusting

screw

clockwise.

If

the

stylus

is

lowered

outside

the

30

cm-record,

rotate

the

screw

counter-clockwise.

Set

-down

Point

for

17

-cm

Records

Adjust

the

speed

selector

20

to

the

"33"

position

and

rotate

the

screw

as

above

described

for

adjustment.

Shut-off

Point

In

the

shutting-off

range

for

records

116

—

122

mm

in

diameter,

the

excenter

IS)

on

segment

200

can

be

used

to

vary

the

shut-

off

point.

Tone

Arm

Lift

Height

This

height

of

the

auto

mode

can

be

adjusted

with

the

aid

of

the

setting

sleeve

197.

Pull

the

mains

plug.

Disengage

the

tone

arm.

Rotate

the

cam

wheel

161

out

of

its

zero

position

until

the

tone

arm

has

reached

its

greatest

lift

height.

The

height

above

the

tone

arm

support

stop

should

be

about

8

mm

as

shown

in

Fig.

18.

If

necessary,

rotate

the

setting

sleeve

197

clockwise

or

anticlockwise

as

required.

Fig.

15

Fig.

16

Fig.

17

Fig.

18

52

7

Defect

Cause

Repair

Tone

arm

improperly

lovvered

(too

fast

or

not

on

record)

.

Acoustic

Feedback

Rated

speed

borders

pitch

adjustment

range.

Turntable

does

not

start.

Turntable

speed

unsatisfac-

tory.

Replacement

parts

Shock-absorbing

action

of

silicone

oil

in

lift

tube

is

ex-

cessive

or

insufficient.

a)

Chassis

parts

(e.g.

connecting

leads)

hit

bench

cutout.

b)

Connecting

leads

are

strained.

Positioning

of

belt

pul

ley

is

inaccurate.

a(

Belt

is

not

in

place.

b)

Motor

is

not

powered.

c)

Motor

pul

ley

has

come

loose.

a)

Motor

pulley

does

not

comply

with

mains

frequency.

b)

Belt

Sl

ips

on

motor

pul

ley

or

turntable.

c)

Excessive

bearing

friction.

Pos.

Part.-No.

Qty

Description

3

220

213

1

Centering

piece

5

263

395

1

Lock

washer

complete

6

261

914

1

Mount

complete

7

248

346

1

Pressure

spring

8

261

916

1

Locking

rau

l

compl

.

8

264

027

1

Locking

rau

l

compl.

9

249

171

1

Tension

spring

10

248

347

1

Tension

spring

11

260

157

1

Stop

12

263

396

1

Platter

mat

13

248

893

1

Spring

washer

14

263

398

1

Platter

complete

15

200

543

1

Snap

spring

16

263

399

1

Fly

vvheel

rotor

complete

17

261

921

1

Flat

belt

18

260

461

1

Regulating

knob

19

232

078

1

Bearing

bush

20

260

297

1

Speed

lever

21

263

378

1

Speed

cover

22

213

260

4

Grooved

drive

stud

23

210

194

1

Grip

ring

24

210

472

1

Machine

screw

25

234

599

1

Reset

cam

26

240

069

1

Adjusting

screw

27

263

400

1

Mounting

plate

complete

30

237

228

3

Spring

suspension

234

433

1

Spring

suspension

(motor

side)

31

230

529

1

Threaded

coupling

32

236

712

3

Pressure

spring

232

843

1

Pressure

spring

(motor

side)

33

200

723

4

Rubber

absorber

34

200

722

4

Casing

Demount

the

l

ift

plate

199,

remove

the

control

stud

195,

lock

washer

196,

and

setting

sleeve

197

vvith

lock

washer;

remove

l

ift

holt

and

pressure

spring,

clean

lift

tube

and

lift

holt.

Evenly

apply

WACKER

SILICONE

OIL

AK

500

000

to

the

lift

bolt.

Reassemble

the

parts.

a)

Align

cutout

by

installation

instructions.

b)

Loosen

or

extend

the

cables.

.

Adjust

knob

18

to

mid

position;

adjust

hex.

nut

111

to

rated

speed

(clockvvise

adjustment

will

increase

the

speed

and

vice

versa).

a)

Mount

the

belt.

b)

Check

svvitch

base

and

mains

plug.

c)

Tighten

it.

a)

Exchange

it.

b)

Clean

al

l

contacting

surfaces

of

belt

and

pulleys,

if

necessary

replace

the

belt.

cl

Clean

and

relubricate

the

bearings.

Pos.

Part.-No.

Qty

Description

35

239

414

3

Transport

lock

36

260

428

1

Clamping

37

263

262

1

Tonearm

complete

38

263

401

1

Weight

complete

39

263

259

1

Tonearm

head

complete

40

261

929

1

Tonearm

lead

41

262

186

1

1/2

inch

conversion

kit

complete

42

249

383

1

Counter

nut

43

234

651

1

Grub

screw

44

261

979

1

Frame

complete

45

242

677

1

Machine

screw

M

4

x

8

48

236

069

1

Machine

screw

49

248

979

1

Lifting

plate

50

260

298

1

Switch

lever

51

260

328

1

Stroboscope

prism

52

263

408

1

Tonearm

rest

complete

56

246

884

1

Cionter

nut

57

234

634

1

Grub

screw

58

261

981

1

Bearing

race

complete

59

261

798

1

Washer

5,2/10

60

248

989

1

Rotary

knob

61

249

097

1

Raised

countersunk

head

screw

M

2,5

x

12

62

263

331

1

Spring

housing

complete

63

263

330

1

Bearing

complete

64

210

597

1

Washer

65

262

294

1

Screw

66

260

334

1

Rotary

knob

67

263

407

1

Rear

cover

68

200

444

7

Spring

washer

69

260

320

1

Cam

disc

70

242

298

1

Washer

71

228

113

1

Washer

4,2/8/1

8

Fig.

19

Exploded

view

1

ciD

•

//

/

9

Fig.

20

Exploded

view

2

'etw

10