Dual 1009 F Manual de usuario

Otros manuales para 1009 F

1

Tabla de contenidos

Manuales populares de Placa giratoria de otras marcas

Gemini

Gemini CDT-05 MKII Manual de usuario

Rotel

Rotel RP-820 Manual de usuario

Shuman

Shuman MC-250BT Manual de usuario

Stanton

Stanton STR8-150 Manual de usuario

Audio Technica

Audio Technica AT-LPW40WN Manual de usuario

Crosley

Crosley McQueen CR7011-GY Manual de usuario

Reloop

Reloop SMP-1 Manual de usuario

auna

auna TT-Classic Plus Manual de usuario

COMO AUDIO

COMO AUDIO Turntable Analog Manual de usuario

REED

REED Muse3C Manual de usuario

AXIOMTEK

AXIOMTEK OPS883-H Series Manual de usuario

Pioneer

Pioneer PL-71 Manual de usuario

Vestax

Vestax PDX-a1 Manual de usuario

Denon

Denon DP-400 Manual de usuario

Audio-Techica

Audio-Techica AT-LP60XBT Manual de usuario

Goldring

Goldring G99 Manual de usuario

Acoustic Signature

Acoustic Signature Typhoon NEO Manual de usuario

Technics

Technics SL-1200 Manual de usuario

Ura

••••••••

Crleiggenranrigrläg:

Dual

Technical

Data:

Current:

Line

voltage:

Drive:

Power

consumption:

Current

requirements:

Turntable

speeds:

Speed

adjustment:

Turntable:

Wow

and

flutter:

Rumble:

Signal-to-noise

ratio:

Tonearm:

Pickup

cartridge:

Weight:

Dimensions

and

mounting

cutouts:

*

In

accordance

with

DIN

45500

E.

•

M

L

w

Lqjjljji

no,

Funiet

mim

''

fra"

;::-

113

InalzU

ablillinerr

lim

.

First

Edition

E

9

F

Alternating,

50

or

60

cycle,

with

appropriate

motor

pulleys

selector

for

110

or

220

volts

four-pole,

single-phase,

induction

motor

6.5

watts

approximately

50

ma

maximum

at

220V,

50

cycle;

90

ma

maximum

at

117

V,

60

cycle

78,

45

and

33

1/2

r.p.m.

adjustment

range

of

6

'

3

/

0

at

all

three

turntable

speeds

non-magnetic,

4

lb.,

Hi-Fi

turntable

Less

than

±

0.12%

less

than

38

dB

below

signal

level

*

less

than

56

dB

below

signal

levet

*

balanced

on

all

three

axes,

extremely

low

mass,

and

precision,

friction-free

suspension

(vertical

and

horizontal

friction

bearing

friction

less

than

0.04

gm)

tonearm

will

accept

all

cartridges

with

1

/

2

"

mounting

and

weighing

from

1-13

gms.

11

lbs.

without

packing

see

installation

instructions

DUAL

GEBRÜDER

STEIDINGER

•

7742

ST.GEORGEN/SCHWARZWALD

V381

4/768

engl.

H

Printed

in

Germany

Download from www.dual.de

Not for commerical use

Fig.

1

Tonearm

hook-up

schematic

left

channel

channel

2

tonearm

junction

board

with

muting

switch

Q2

L_

channel

1

red

Q1

spring

contacts

between

plug-in

cartridge

head

and

tonearm

plug-in

head

viewed

from

above

front

stereo

pickup

phonograph

record

red

white

RI

GRGL

inner

side

of

groove

left

channel

L

-

1

•

red

right

channel

channel

1

r

Tonearm

audio

lead

channel

1

red

lead

channel

2

white

lead

to

tonearm

junction

board

channel

2

white

6-

2 1

white

blue

/

Qi

outer

side

of

groove

right

channel

a)

with

miniature

5-pin

plug

b)

with

phono

plug

to

amplifier

c)

with

banana

plugs

channel

1

=

red

channel

2

=

yellow

common

=

black

ground

=

green

2

Contents

Page

L

Technical

data

1

Tonearm

hook-up

schematic

2

Motor

and

drive

4

Fine-speed

regulation

5

Turntable

does

not

tum

when

unit

plugged

in

and

"starr

button

operated

5

Turntable

does

not

come

up

to

speed

5

Assembly

noise

5

Correct

speed

obtained

only

by

extreme

adjustment

of

fine-speed

regulator

5

Tonearm

and

suspension

6

Tonearm

anti-skating

mechanism

7

Needle

slides

out

of

groove

Tonearm

sets

down

beside

arm-rest

(68)

7

Horizontal

friction

too

great

7

Arm

set-down

not

free

7

Tonearm

movements

8

Tonearm

set-down

and

lift

8

Tonearm

does

not

move

onto

record

when

drop

cycle

actuated

9

Tonearm

lowers

too

quickly

onto

record

when

drop

cycle

actuated

9

Tonearm

misses

edge

of

record

9

Tonearm

strikes

record

during

change

cycle

9

Start

cycle

10

Manual

operation

10

Stop

switching

ii

Record

drop

11

Shut-off

12

Shut-off

and

change

cycle

12

Tonearm

returns

to

arm

rest

immediately

after

being

manually

placed

on

record

13

Turntable

stops

after

automatic

set-down

of

tonearm

13

Tonearm

returns

to

its

rest

after

each

record

13

Turntable

does

not

turn

in

manual

position

13

Last

record

keeps

repeating

13

Record

drops

after

"stop",

then

"starr

buttons

are

depressed

13

Records

do

not

drop

13

Noise

during

change

cycle,

arm

set-down

and

lift-off

13

Na

sound.

Muting

switch

remains

closed

13

Motor

continues

to

run

after

tonearm

returns

to

its

rest

14

Turntable

slows

down

as

record

drops

14

Acoustic

feedback

14

Replacement

parts

and

exploded

view

14-20

Lubrication

20-21

Fig.

2

Motor

suspension

and

turntable

drive

3•111•111

I

118

117

116

13

158

161

155

149

Motor

and

drive

The

turntable

and

&enge

cycle

are

driven

by

a

four-pole

induction

motor

(113)

with

an

extremely

low

magnetic

field

and

vibration-free

drive.

Motor

speed

is

constant

for

line

variations

of

±

10%.

Motor

speed

is

dependent

on,

and

proportional

to

line

frequency.

Adapting

for

operation

at

line

frequencies

of

50

or

60

cycle

is

accomplished

by

the

use

of

replaceable

motor

pulleys

(101).

Fig.

3

Motor

field

connections,

voltage

selector

in

110

volt

position

Motor

moteur

yellow

1,

jaune

1,

amarillo

1,

gelb

1

1/1

145

101

113

1009

F

Motor

pulley,

50

cycle

Part

No.

12

X

-

U

14

Motor

pulley,

60

cycle

Part

No.

12

X

-

U

20

The

motor

pulley

is

secured

to

the

motor

shaft

by

means

of

a

set

screw.

When

changing

pulleys,

care

must

be

taken

that

it

is

set

at

the

correct

height.

Power

switch

Interrupteur

resorts

schwarz

1

2

'plack

1,

noir

1,

c

yellow

black

2,

noir

2,

ci

cn

110V

'aune

2

C\I

Netzschalter

II

Interruptor

de

muelles

Spannungs-

wähler

Voltage

selector

Setecteur

de

tension

Caja

del

conmutador

für

Verstärkeranschluß

(Netzspannung)

for

amplifier

connection

(line

voltage)

pour

branchement

de

l'amplificateur

Al

amplificador

(tension

de

alimentaci6n)

1111K

für

Verstärkeranschluß

(Netzspannung)

110>-

11

110/

220V-

4

The

turntable

is

driven

by

means

of

the

drive

wheel

(145)

which,

to

prevent

damage

to

its

friction

surfaces,

automatically

disengages

in

the

"Off"

position.

Setting

the

turntable

speed

to

33

1

/

3

,

45

and

78

r.p.m.

is

accomplished

by

raising

or

lowering

the

drive

wheel

to

the

corresponding

step

of

the

motor

pujley.

Similarly,

moving

the

speed

change

knob

(8)

causes

the

switch

segment

(116)

to

rotate.

The

grooves

in

the

switch

segment

guide

the

rocker

assembly

(155)

on

which

the

drive

wheel

is

mounted.

The

drive

wheel

is

thus

lifted

vertically

from

the

motor

pulley

and

placed

in

the

desired

position.

Fine-speed

regulation

A

fine

speed

adjustment

for

all

three

record

speeds

—

33

1

/

3

,

45

and

78

r.p.m.

—

permits

a

variation

in

turntable

speed

of

6

(1

/

0

.

Turning

the

adjusting

wheel

causes

the

switch

segment

(116)

and

with

it

the

rocker

assembly

(155)

to

move

up

and

down.

This

vertical

motion

changes

the

position

of

the

idler

wheel

on

the

selected

step

of

the

motor

pulley.

The

tapered

shape

of

the

motor

pulley

gives

an

adjustment

range

of

±

3

°A

from

the

nominal

speed.

Trouble

shooting:

Symptom

Cause

Fig.

4

Turntable

speeds

and

drive

wheel

shift

mechanism

153

145

139

161

158

155

117

118 115

12

116

Remedy

Turntable

does

not

run

when

unit

a)

Current

path

to

motor

plugged

in

and

"start"

button

interrupted

operated

Turntable

does

not

come

up

to

speed

b)

Drive

wheel

(145)

not

in

contact

with

turntable

c)

Motor

pulley

(101)

loose

a)

Motor

pulley

does

not

correspond

to

local

line

frequency

b)

Slippage

between

motor

pulley

(101),

drive

wheel

and

turntable

c)

Motor

bearing

friction

Noise

during

change

cycle,

arm

Worn

drive

wheel

set-down

and

lift-off

Correct

speed

obtained

only

by

extreme

adjustment

of

fine-speed

regulator

a)

Check

connection

at

switch

plate

and

voltage

selector

b)

Check

rocker

assembly

(155)

c)

Tighten

motor

pulley

(101)

a)

Change

motor

pulley

b)

Clean

friction

surface

of

drive

wheel

(145)

and

(145)

motor

pulley.

Change

drive

wheel,

if

necessary

Idler

wheel

does

not

contact

motor

pulley

correctly

c)

Clean

motor

bearings

and

re-lubricate

from

lubrication

chart

Replace

drive

wheel

(145).

Clean

friction

surfaces

of

turntable

and

motor

pulley

thoroughly

with

a

grease-free

cloth.

After

cleaning,

take

care

not

to

touch

the

inner

rim

or

motor

pulley.

Correct

idler

wheel

position.

Loosen

lock

nut

(149)

and

rotate

idler

wheel

shaft

(147).

The

correct

position

of

the

idler

wheel

is

in

the

center

of

the

selector

motor

pulley

step

(dial

pointer

in

mid-position)

Re-secure

lock

nut

after

adjusting

5

Fig.

5

Tonearm

suspension

42

51

21

20

56

19

29

39

40

254

255

253

R3

88

Fig.

6

Tonearm

suspension

with

anti-skating

compensation

_EL

Neela

i°t

-

mmunr7

vtie

111

iiii1.11111111111 .110

r

wtr

i

,

4

,

1

1

bi'

7—%__ILffliffej

47

• •

.1

Lt

21-

fae,(

eng((le(Ine

195

229

232

LA

58

260

256

258

196

261

Fig.

7

Tonearm

suspension

(viewed

from

below)

41

54

55

53

Tonearm

and

its

suspension

The

Hi-Fi

tonearm

of

the

Dual

1009

F

employs

precision

e_

ball

bearings

for

both

horizontal

and

vertical

movements.

Vertical

bearing

friction

is

less

than

0.04

gms.

Horizontal

bearing

friction

is

less

than

0.04

gms.

'Neri

Especially

favorable

conditions

for

pickup

are

thus

provided.

Before

setting

the

tracking

pressure

corresponding

to

the

30

cartridge

used,

set

the

scale

to

zero

and

balance

the

arm.

The

counterbalance

weight

is

such

that

cartridges

weighing

38

from

1

to

13

gms.

can

be

balanced

by

rotating

the

counter

balance

weight

(43)

on

its

spindle.

Two

spindles

are

available

—

Part

No.

12

L-

U

117

for

cartridges

weighing

between

1

and

8

gms.

and

Part

No.

12

L

-

U

118

for

cartridges

weighing

up

to

13

gms.

In

order

to

absorb

shocks

(sharp

blows),

the

counterbalance

weight

is

mounted

on

the

threaded

spindle

(45)

by

means

of

an

elastic

coupling.

This

also

prevents

the

counterbalance

from

turning

during

ordinary

handling.

The

cartridge

head

will

accept

al

l

cartridges

with

the

international

1/2

"

standard

mount.

Tracking

force

is

set

by

turning

the

spring

housing

(53)

with

its

scale

divisions

and

thus

tightening

or

loosening

the

internal

spiral

spring.

Scale

markings

are

for

an

adjustment

range

of

0-5

gms.

with

exact

settings

from

0.5

gms.

by

1

/

2

gm.

steps.

55

45

43

30

253

256

258

260

254

45

43

30

To

replace

the

tonearm

assembly

and

suspension,

the

following

procedure

is

recommended:

1.

Set

tracking

force

scale

to

"0".

2.

Unsolder

the

tonearm

lead.

3.

Remove

main

lever

(220)

and

connecting

lever

(242).

58

4.

Remove

"C"

ring

and

washer

of

the

shut-off

slide

(189)

from

the

arm

segment.

5.

Unhook

tension

spring

(260)

and

loosen

screws

(252,

255).

6.

Place

adjusting

ring

(30)

of

the

"Anti-Skating"

mechanism

in

the

"5.5"

position.

7.

Lift

off

arm

segment

(254)

and

remove

lift

screw

(261).

To

loosen

the

nut

(253),

hold

the

bearing

housing

(38),

between

the

base

plate

(88)

and

adjusting

ring

(30),

with

a

suitable

tool

(such

as

flat

pliers).

Carefully

take

out

the

tonearm,

taking

care

not

to

bend

the

spring

lever

(58).

To

re-install

the

tonearm,

the

reverse

procedure

is

followed.

Before

tightening

screws

(252,

255),

check

the

tonearm

position

over

the

arm

rest,

so

that

tonearm

lowers

onto

the

rest

without

binding.

When

installed,

moving

the

tonearm

in

and

out,

when

the

adjustment

ring

(30)

is

in

its

"0"

position,

should

not

cause

the

tension

spring

(260)

to

move.

If

necessary,

the

setting

can

be

corrected

by

means

of

the

tabs

(LS)

of

the

spring

lever

(58).

Similarly,

after

re-installing

the

retaining

spring

for

the

tone

-

arm

leads,

care

must

be

taken

the

arm

segment

(254)

is

not

impeded

by

the

tonearm

leads.

To

rem

,f

2ye

the

tonearm

from

the

bearing

frame,

unsolder

tonearm

leads,

place

spring

housing

in

its

zero

position,

loosen

lock-nut

(20)

and

remove

set

screw

(21).

Then

carefully

take

tonearm

out

of

the

bearing

frame.

When

re-installing

tonearm,

make

certain

that

the

angle

formed

in

the

end

of

the

spiral

spring

engages

the

slot

in

the

tonearm

bearing

housing.

Then

screw

in

set

screw

(21)

and

tighten

lock

nut.

Check

that

bearing

play,

after

tightening,

is

barely

noticeable.

257

"oe

161

233

189

265

LS

220

6

Fig.

8

Skating

and

anti-skating

force

Tonarm

anti-skating

mechanism

The

tendency

of

a

tonearm

to

slide

across

the

record

is

caused

by

the

tonearm

geometry.

In

the

Dual

1009

F,

this

is

virtually

eliminated

by

a

precision

anti-skating

mechanism.

Skating

force

is

caused

by

friction

between

record

and

stylus,

and

to

a

less

extent

by

the

geometry

of

the

tonearm

and

the

physical

properties

of

the

material

from

which

the

record

is

made.

Skating

force

increases

with

increasing

tracking

pressure

and

with

decreasing

stylus

radius.

The

resulting

skating

effect

pulls

the

tonearm

towards

the

center

of

the

record.

This

occurs

not

only

on

the

eccentric

shut-off

grooves

but

also

causes

unequal

contact

with

the

groove

sides.

The

anti-skating

mechanism

tends

to

minimize

these

effects

when

playing

valuable

Hi-Fi

records.

Rotating

the

adjustment

ring

of

the

anti-skating

mechanism

moves

the

spring

lever

(58)

by

means

of

the

curved

track

inside

the

adjustment

ring,

and

the

tension

spring

(260)

transmits

the

counter-moment

to

the

tonearm.

The

Optimum

adjustment

of

the

anti-skating

mechanism

is

obtained

with

a

needle

curvature

of

0.7

±

0.1

mil.

The

adjusting

screw

(threaded

bushing)

is

sealed

with

glyptol

after

setting.

A

special

Dual

-Skate

-O

-Meter

and

standard

record

L096

are

required

for

re-adjustment,

which

should

only

be

performed

by

an

authorized

service

station.

Trouble

shooting:

Symptom

Cause

Direction

of

skating

force

Anti-Skating

Force

Adjustment

a)

b)

Direction

of

anti-skating

a)

Tonearm

on

rest

position,

anti-skating

set

to

"4"

b)

Anti-skating

in

"0"

c)

Tonearm

positioned

over

record,

anti-skating

same

as

in

a)

Remedy

Tonearm

suspension

Both

bearings

require

a

small,

barely

noticeable,

amount

of

play.

Only

the

left

bearing

screw

is

adjustable

for

the

horizontal

bearings.

The

vertical

bearing

adjustment

is

made

by

means

of

the

stop

nut

(40).

Needle

slides

out

of

record

groove

a)

Tonearm

not

balanced

a)

See

operating

instructions

b)

Tonearm

tracking

force

too

light

b)

Adjust

with

spring

housing

(barrel

spring

53)

to

correct

pressure

for

particular

cartridge

c)

Replace

needle

d)

Check

tonearm

bearing

Tonearm

lands

beside

tonearm

rest

(68)

Horizontal

bearing

friction

too

high

c)

Needle

defective

d)

Tonearm

bearing

friction

too

high

e)

Ball

missing

from

shut-off

raul

(189)

a)

Arm

segment

assembly

(254)

out

of

position

b)

The

latch

(233)

presses

against

the

tabs

(LS)

of

the

arm

segment

during

the

change

cycle

Tonearm

is

set

too

high

on

the

arm

lift.

Main

lever

jams

against

the

guide

pin

of

the

lift

screw

assembly

Vertical

movement

of

tonearm

is

a)

Bearing

friction

too

high

b)

Lift

screw

(261)

jams

in

guide

sleeve

of

the

arm

segment

(254)

impeded

during

set

down

cycle

e)

Install

ball

(33

or

209)

a)

Loosen

the

machine

screws

(252,

255)

and

rotate

the

arm

segment

assembly

(254).

Then

tighten

screw

(255)

and

re-check

adjustment.

Adjustment

is

correct

when

tonearm

lowers

onto

arm

rest

(68)

without

binding.

Finally,

tighten

screw.

b)

Loosen

screw

(197).

Turn

the

short

arm

on

the

long

switch

arm

piece

to

correct

switch

arm

position.

Turn

the

main

cam

by

hand,

and

adjust

so

that

when

the

tonearm

lowers

onto

the

arm

rest,

clearance

of

about

1

/

64

"

is

obtained

between

latch

and

segment

tabs

(LS).

Pickup

needle

should

not

be

farther

from

the

record

than

1

/

4

".

Adjust

by

turning

screw

(R

8,

fig.

11).

a)

Check

bearing

set

screw

(21)

and

arm

balance

b)

Remove

and

clean

lift

screw

Fig.

9

Tonearm

guide

mechanism

max.

8mm

172R1

182

176

222

191

48

166

220

265

195

254

189

193

Tonearm

movements

A

guide

groove

located

on

the

underside

of

the

main

cam

(166)

controls

automatic

lift-off

and

set-down

of

the

tonearm

as

the

main

cam

rotates

360

0

.

Tonarm

lift

The

tonearm

lift

permits

the

tonearm

to

be

safely

set

down

at

any

desired

position

of

the

record

(except

in

the

shut-off

area).

Pushing

the

lift

handle

towards

the

front,

turns

the

drive

washer

(245).

This,

in

turn,

moves

the

connecting

lever

(242),

main

lever

(220),

and

lift

screw

(261)

to

raise

the

tonearm.

After

swinging

the

tonearm

to

the

desired

spot

of

the

record,

Fig.

10

Tonearm

lift

(tonearm

raised)

235

233

R8

BG

LS

tonearm

released

264

197

199

168

202

Tonearm

raising

and

lowering,

as

well

as

horizontal

movements,

are

controlled

by

main

lever

(220)

and

lift

screw

(261).

161

Setting

the

unit

for

playback

of

7",

10"

and

12"

records

is

accomplished

by

means

of

the

switch

,

button

(73,

fig.

12).

The

set-down

point

of

the

tonearm

is

determined

by

the

eccentric

of

the

arm

positioning

slide

(265)

contacting

the

record

size

selector

lever

(262,

fig.

13).

Horizontal

movement

of

the

tonearm

is

limited

by

the

arm

segment

(254)

striking

the

arm

positioning

slide

(265).

During

the

change

cycle,

the

main

lever

(220)

raises

the

arm

positioning

slide

bringing

it

within

reach

of

the

spring

stud

(195).

On

comple-

tion

of

the

change

cycle

(i.

e.,

set-down

of

the

on

the

record),

the

arm

positioning

slide

is

again

and

returns

to

its

normal

position.

lt

thus

moves

out

of

reach

of

the

spring

stud

(195)

permitting

the

tonearm

to

move

horizontally

without

hindrance,

while

playing

a

record.

the

lift

handle

is

lightly

tapped

towards

the

rear,

to

release.

Thus

freed,

connecting

lever

and

the

leaf

spring

(206)

of

the

main

lever

(220)

resume

their

normal

positions

and

the

tonearm

lowers.

The

lowering

of

the

tonearm

is

delayed

by

silicone

grease

on

the

drive

washer.

The

set

screw

(R

8)

permits

needle

height

to

be

varied

from

0

to

1/2

"

above

the

record.

Turning

to

the

right

increases,

to

the

left

decreases,

this

distance.

IIDIIHIIIIOHHIIHHhIIIjIII

250

238 246 245

244

8

243

R8

242

220

229

261

Fig.

11

Tonearm

lift

in

rest

position

Trouble

shooting

:

Symptom

1

1111111111111111111111110"'111111111111A1

251

247

245

243

R8

242

220

229

261

Cause

Remedy

Tonearm

does

not

move

onto

record

when

drop

cycle

actuated

Tonearm

lowers

too

quickly

onto

record

when

drop

cycle

is

actuated

Tonearm

misses

edge

of

record

Damping

too

great

Drive

washer

dirty

Too

little

damping

Loosen

nut

(250).

Remove

cover

washer

(249)

and

drive

washer

(245).

Clean

thoroughly.

Smear

silicone

oil

AK

300

000

evenly

on

both

sides

of

the

drive

washer.

Reassemble

and

wipe

off

excess

oll.

Loosen

nut

(250).

Remove

cover

washer

(249)

and

drive

washer

(245).

Clean

thoroughly.

Smear

silicone

oil

AK

300

000

evenly

on

both

sides

of

the

drive

washer.

Reassemble

and

wipe

off

excess

oil.

a)

Wrong

record

size

selected

a)

Select

correct

record

size

with

record

size

button

b)

Set

-down

incorrectly

adjusted

b)

Adjust

for

7"

record

by

turning

eccentric

screw

R

5,

so

that

tonearm

sets

down

about

1

/

16

"

from

edge

of

record.

(Adjustment

is

made

only

for

7"

records;

10"

and

12"

adjustment

being

then

automatically

correct.)

c)

Record

not

of

standard

size

c)

Use

standard

records

d)

Tonearm

clutch

surfaces

d)

Clean

clutch

surfaces

contaminated

Tonearm

strikes

record

during

Tonearm

height

incorrectly

Bend

tab

(L)

towards

or

away

frorn

bearing

plate

change

cycle

set

(51).

When

correctly

adjusted,

the

pickup

needle

is

1

/

64

above

the

dress

-up

plate

(74)

when

removed

from

the

arm

rest.

9

Fig.

12

Operating

controls

Fig.

13

Start

position

H111111111

rldirekereliw'

tanimmesignmis

,

-

IME11111111•111

-

a\

k

.

LS

BG

233

161

235 265

199

213

264

Start

cycle

43

45

Operating

the

start

button

(75,

fig.

12)

moves

the

switch

41

lever

(269)

towards

the

main

cam,

initiating

the

following

53

sequences:

55

30

22

66

68

R5

73

a)

The

set

screw

(213)

of

the

switch

lever

assembly

turns

the

switch

arm

(161)

mounted

on

the

grooved

shaft

(199).

The

rocker

assembly

(155)

moves

the

drive

wheel

(145,

fig.

2)

60

into

contact

with

the

motor

pulley

and

turntable,

by

means

of

a

tension

spring.

At

the

same

time,

the

switch

slide

(153,

fig.

15)

actuates

the

line

switch

through

the

switch

arm,

and

the

turntable

begins

to

turn.

b)

The

switch

angle

(UW)

mounted

on

the

switch

lever

assembly

(269)

is

brought

within

range

of

the

cam

follower

lever

(168)

so

that

it

is

pushed

into

the

change

position

after

the

rotation

of

the

main

cam

(fig.

14).

74

Operating

the

start

button

also

releases

the

start

lever

(202)

pulling

it

towards

the

main

cam

by

means

of

the

tension

spring

(268).

This

causes

the

coiled

spring

(201,

fig.

15)

to

bring

the

shut-off

lever

(163,

fig.

18)

within

range

of

the

main

cam

dog.

Thus

the

shut-off

lever

drives

the

main

cam.

75

To

prevent

mis-operation,

the

start

button

is

locked

during

the

start

cycle

(i.

e.

when

the

main

cam

is

turning).

Just

before

the

main

cam

reaches

its

zero

position

(at

the

end

of

the

change

cycle),

the

start

lever

is

pushed

clear

of

the

main

cam

by

means

of

the

start

pin

(SB)

of

the

main

cam.

This,

in

turn,

restores

the

switch

lever

and

start

button

to

their

original

positions.

After

installing

and

also

after

moving

the

record

changer,

the

unit

should

be

operated

with

the

tonearm

locked.

This

will

automatically

re-adjust

the

shut-off

lever

which

may

have

shifted

out

of

position.

262

202

267

Manual

operation

Placing

the

switch

button

in

"manual"

position

initiates

the

start

cycle.

The

switch

lever

assembly

(269)

is

pushed

towards

the

main

cam

and

the

following

sequence

is

set

up:

a)

Set

screw

(213)

mounted

on

the

switch

lever

(269)

rotates

the

switch

arm

(161)

which

is

mounted

on

the

grooved

shaft

(199).

b)

The

rocker

assembly

(155)then

moves

the

drive

wheel

(145)

into

contact

with

the

motor

pulley

and

turntable

by

means

of

a

tension

spring.

10