Garrard R.c.80 Manual

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Model

R.C.80

Installation,

Operation

and

Service

Instructions

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CONTENTS

OPERATING

INSTRUCTIONS

INSTALLATION

SERVICE

ADJUSTMENTS

PICK-UP

PICK-UP

SPARE

PARTS

LIST

Page

...

2

..

.

3

...

7

...

9

..

.

9

Inside

back

cover

TTie

Garrard

Model

R.C.

80

Automatic

Changer

is

made

under

the

following

patents:—

450966

6n7267

802949

Germany

Swiss

Italy

666677

189688

347645

Sweden

..

88739

U.S.A.

..2063199

Canada

..

551634

Other

Patents

pending.

4391/49

14998/49

22922/49

642/50

o43/50

644/50

Provisional

Patents.

-N

The

Garrard

Model

RC

80

Record

Changer

"GARRARD"

Record

Changers

are

simple

and

reliable

in

operation.

They

are

thoroughly

tested

before

leaving

our

Works

and

will

give

a

long

period

of

satisfactory

service.

Instructions

for

operating

the

Model

R.C.

80

are

given

in

this

manual—please

follow

these

instructions

carefully.

In

common

with

all

mechanical

devices,

however,

minor

adjustments

are

sometimes

necessary.

The

Service

Instructions

included

have

been

compiled

to

cover

practically

all

the

information

necessary

to

ensure

efficient

operation.

Address

your

inquiries

to:—

The

Garrard

Engineering

&

Mfg.

Co.

Ltd.,

Technical

Service

Dept.,

Newcastle

Street,

Swindon,

Wilts.

Telephone

No.;

Swindon

2624—5—6.

If,

after

carefully

perusing

this

manual

you

are

still

in

doubt,

our

Technical

Department

will

gladly

assist

you.

If

you

wish

to

make

inquiries

concerning

the

return

of

a

Unit

for

repair,

or

if

you

wish

in

order

Spar"

Parts,

address

your

lette"

♦o;-

Th"

Garrard

Engineering

&

Mig.

Co.

liq.,

Seri'ice

and

Spares

Dept.,

"Okus

Road,

Swindon,

Wilts.

Telepnone

No:

Swizdon

^405

A

The

"Garrard"

Model

R.C.80

Record

Changer

OPERATING

INSTRUCTIONS

The

"GARRARD"

Model

R.C.80

Automatic

Record

Changer

will

play

any

number

of

records

up

to

10,

of

any

of

the

following

types

(not

mixed):—

78

1

0"

r.p.m.

33.1/3

r.p.m.

45

r.p.m.

Changer

proceed

in

the

or

12"

7",

10"

or

12"

7"

To

operate

the

Record

following

order:—

1

See

that

the

correct

pick-up

is

in

position

for

the

type

of

record

to

be

played,

i.e.,

one

having

a

stan

dard

.002"

to

.003"

radius

needle

for

78

r.p.m.

records,

or

.001"

radius

needle

for

33.1/3

and

45

r.p.m.

records.

The

pick-up

head

is

plugged

into

the

arm

and

a

slight

pull

is

all

that

is

necessary

to

re

move

it.

2

Place

the

correct

record

spindle

in

position,

^.e..

stepped

sloping

spindle

for

78

or

33.1/3

r.p.m.

records,

or

large

spindle

for

45

r.p.m.

records.

(See

diagrams

12

and

14).

3

Set

lever

at

side

of

platform

to

size

of

record

it

is

desired

to

play,

7",

10"

or

12".

Also

turn

subsidiary

platform

to

forward

position

if

it

is

desired

to

play

7"

records

with

small

hole.

(See

diagram

2,

3,

4

and

5.)

4

Turn

speed

control

knob

to

desired

speed,

78,

45

oi

33.1/3

r.p.m.

5

Place

any

number

of

records

up

to

10,

(not

mixed)

on

record

spindle,

lower

overarm,

and

switch

on

by

moving

the

front

left

hand

knob

to

"Start"

Note:

The

overarm

is

not

used

when

playing

7"

records.

To

reject

a

record,

move

the

left

hand

knob

to

the

"Reject"

position.

The

changer

can

be

switched

off

by

moving

the

left

hand

knob

to

the

"Stop"

position.

If

this

is

done

while

a

record

is

playing,

when

switching

on

again,

that

record

will

be

automatically

rejected

and

the

next

record

commenced.

NOTE:

Should

the

record

changer

be

stopped

with

the

pick

up

arm

not

on

its

rest,

the

pick-up

should

not

be

handled,

but

the

left

hand

knob

moved

to

"Start,"

when

the

pick-up

will

automatically

lift

and

return

to

its

rest

position

and

stop

if

no

records

are

on

the

record

spindle.

The

pick-up

arm

will

not

move

from

its

rest

unless

one

or

more

records

are

placed

on

the

record

spindle.

This

is

a

safety

device

designed

to

prevent

the

pick-up

being

damaged

should

the

changer

be

switched

on

with

out

being

loaded

with

records.

RECORDS.

To

obtain

the

best

results

from

your

records

and

record

changer,

care

should

be

taken

to

see

that

the

records

are

stored

so

that

they

keep

reasonably

fl

at

and

clean.

Dust

or

dirt

in

the

record

grooves

causes

abrasive

action

and

shortens

the

life

of

the

record,

whilst

badly

warped

records

will

give

trouble

in

drop

ping,

poor

reproduction,

and

even

damage

the

pick-up

stylus.

Page

Two

Dimensions.

The

cabinet

space

required

for

fitting

is

15i"

long,

X

13i"

wide,

with

5.3/4"

clearance

above

and

3.1/2"

clearance

below

the

plate.

With

a

slight

alteration

the

motor

board

cut

out,

the

"GARRARD"

Model

R.C.

80

is

a

direct

replacement

for

the

"GARRARD"

Models

R.C.

60, 65,

65A,

70

and

70A

Record

Changers.

FITTING

TO

CABINET.

First,

the

motor

board

should

be

cut

out

and

drilled

js

shown

on

the

template

enclosed

with

each

changer.

If

the

changer

is

to

replace

one

of

the

"GARRARD"

Models

mentioned

above,

only

the

piece

marked

on

the

left

hand

side

of

the

template

need

be

cut

out.

A

small

clearance

should

be

left

between

the

edges

of

the

unit

plate

and

the

cabinet

sides,

to

allow

the

record

changer

to

fl

oat

freely

when

mounted

on

its

suspension

springs.

Having

opened

the

carton,

remove

the

turntable

found

on

the

top

liner

and

the

box

containing

the

record

spindles,

then,

after

disposing

of

the

side

liners,

care

fully

lift

out

the

changer

by

the

string

loops.

A

bag

containing

the

fi

xing

screws

and

spring

mountings

will

be

found

in

one

corner

of

the

carton.

The

spare

pick

up

head

and

accessories,

if

supplied,

will

be

found

in

u

box

fi

xed

to

the

bottom

liner.

Assemble

the

spring

mountings

to

the

motor

board

as

shown

on

the

tem

plate

and

diagram

1.

Next,

assemble

the

long

fi

xing

screws

to

the

changer

mounting

plate,

fi

tting

the

spring

washer

under

the

nut,

then

assemble

a

nut

on

each

screw

leaving

3/8"

of

thread

below.

Before

placing

the

changer

in

position,

the

fi

nal

switch

off

arm

at

the

rear

of

the

changer,

which

on

un

packing

will

be

found

in

a

downward

position,

should

be

turned

to

a

vertical

position

as

shown

in

the

illustra

tions.

To

do

this,

loosen

the

round

headed

screw

at

the

top

of

the

auto

switch

spindle,

turn

the

arm

to

a

vertical

position

and

re-tighten

the

screw.

The

changer

can

now

be

placed

in

position

on

its

suspension

springs.

Still

using

the

string

loops

for

lifting,

the

changer

should

be

levelled

by

fi

rst

fi

tting

the

turntable,

then

placing

a

spirit

level

on

a

record

on

the

turntable,

the

changer

can

be

adjusted

by

raising

it

and

adjusting

the

lower

nuts.

When

level,

the

nuts

should

Page

Three

INSTALLATION

be

assembled

under

the

springs

and

locked

in

position

with

the

lock

nuts.

The

string

loops

may

now

be

removed

and

the

changer

connected

to

the

power

sup

ply

and

pick-up

to

the

reproducer.

It

is

essential

to

use

the

spring

suspension

assem

blies

on

this

model

changer

to

prevent

extraneous

vibration

from

reaching

the

unit.

If

two

record

spindles

are

used,

a

hole

can

be

drilled

in

the

wooden

motor

board

to

take

the

spindle

not

in

use.

If

two

"GARRARD"

pick-up

heads

are

used,

the

plastic

box

in

which

one

of

the

heads

is

supplied,

can

be

screwed

down

into

the

cabinet

to

act

as

a

dust

free

container

for

the

pick-up

head

not

in

use.

If

the

plug-in

feature

is

to

be

used

to

change

pick-ups,

the

cheese

headed

screw

under

the

pick-up

arm

at

rear

of

pick-up

should

be

removed.

This

screw

should

be

replaced

and

tightened

up

for

transit

purposes

only.

TRANSIT

SCREWS.

Two

plated

wood

screws

are

supplied

for

use

in

clamping

the

record

changer

rigid

to

the

motor

board

for

transit

purposes.

The

small

bakelite

washers

should

be

fi

tted

under

these

screws

to

prevent

marking

the

mounting

plate.

These

screws

should

be

removed

Ije-

fore

using

the

record

changer.

The

position

of

the

screws

is

shown

on

template

and

diagram

II.

METHOD

OF

SPRING

SUSPENSION

UNIT

PI.

ATE

I^SUSPENSION

PI

ATE

.

FIXING

SCREW

WOOD

SCREWS

SPRING

WASHER

SUSPENSION

SPRING

WASHFR

MOTOR

BOARD

SPRING

ADJUSTED

FIXING

NUTS

LOCK

NUT

Diagram

1

Record

Platform

Set

for

12"

Records

Record

Platform

Set

for

7"

Records

Record

Platform

Set

for

10"

Records

Page

Four

Record

Platform

set

for

1"—45

r.p.m.

Records

using

the

large

Record

Spindle

MAINTENANCE.

The

motor

and

intermediate

wheel

bearings,

being

of

the

oil

retaining

type,

rarely

need

lubricating.

When

the

need

for

oil

is

apparent,

remove

both

the

belts

and

while

holding

the

intermediate

wheel

out

of

the

way,

lubricate

the

pulley

and

motor

bearings

with

a

medium

grade

of

machine

oil.

Carefully

remove

every

trace

of

surplus

oil

before

replacing

the

belts.

The

rubber

rim

on

the

intermediate

wheel

and

the

two

belts

must

be

kept

free

from

oil.

VOLTAGE

AND

FREQUENCY.

The

"GARRARD"

Model

R.C.

80/AC.

Record

Changer

is

suitable

for

use

on

100/130

and

200/250

volts,

at

either

40,

50

or

60

cycles

according

to

the

motor

pulley

supplied,

and

the

links

on

the

terminal

block

should

be

set

to

the

correct

position

to

corres

pond

with

the

voltage

of

the

power

supply

as

shown

in

diagrams

6

and

7.

A

motor

driving

pulley

can

be

supplied

for

40,

50

or

60

cycle

mains

as

required.

The

model

R.C.

80/D.C.

Record

Changer

is

suitable

for

use

on

100/130

and

200/250

volts

direct

current

only

and

the

links

on

the

terminal

block

should

be

set

to

the

correct

position

to

correspond

to

the

voltage

of

the

power

supply

as

shown

in

diagrams

8

and

9.

The

speed

of

the

D.C.

motor

is

governor

controlled

and

information

for

adjusting

the

speed

will

be

found

under

"Service

Instructions."

The

motor

should

be

earthed

by

connecting

a

lead

from

the

earthing

tag,

(located

under

one

of

the

motor

end

cover

screws)

to

a

good

earth

connection.

When

adapting

an

AC./DC.

(Universal)

Radio

Receiver,

Amplifier,

or

one

using

an

AC./DC.

Power

Pack

for

the

reproduction

of

gramophone

records,

a

pick-up

transformer,

or

condensers

in

series

with

the

pick-up

leads

should

be

fi

tted,

otherwise

the

pick-up

circuit

becomes

alive.

Also

the

leads

from

the

radio

set

or

amplifier

to

the

pick-up

should

be

screened

and

as

short

as

possible.

LINK

CONNECTIONS

R.C.80/A.C.

This

type

is

for

A.C.

only

and

has

a

brown

cover

on

the

terminal

block.

CONNECT

LINK

THUS

FOR

200/250

VOLTS.

CONNECT

LINK

THUS

FOR

100/130

VOLTS.

MAINS

LEADS

Diagram

6

MAINS

LEADS,

Diagram

7

LINK

CONNECTIONS

R.C.80/D.C.

This

type

is

for

D.C.

only

and

has

a

blue

Cover

on

the

terminal

block.

CONNECT

LINKS

THUS

FOR

200/250

VOLTS.

CONNECT

LINKS

THUS

FOR

i00/130

VOLTS.

MAINS

LEADS

Diagram

8

MAINS

LEADS'

Diagram

9

Low

voltage

models

have

a

green

terminal

block

cover.

Page

Five

ECCENTRIC

ADJUSTMENT

FOR

PICK-UP

LIFT

SWITCH

OFF

CATCH

LEVER

PICK-UP

CONNECTIONS

PICK-UP

MUTIN6

SWITCH

SWITCH

BLOCK

SWITCH

CATCH

LEVER

ADJUSTMENT

FOR

PICK-UP

WEIGHT

ECCENTRIC

ADJUSTMENT

FOR

PLATFORM

PAWL

SCREW

HOLDING

PLATFORM

ADJUSTING

PIN

1

ECCENTRIC

ADJUSTING

PIN

FOR

PLATFORM

MOTOR

SCREWS

HOLDING

FIXED

RECORD

SPINDLE

Underneath

View

Diagram

10

Page

Six

SPEED.

The

Model

R.C.

80/AC.

Motor

is

arranged

to

give

the

desired

turntable

speed

within

close

tolerances.

Should

the

turntable

run

excessively

fast

or

slow

then

the

motor

pulley

should

be

examined

to

see

if

it

is

the

correct

one

to

suit

the

frequency

of

the

mains

supply.

The

various

motor

pulleys

are

colour

finished

as

follows

to

distinguish

the

three

types:—

Nickel

-

50

cycles.

Brass

-

60

cycles.

Copper

-

40

cycles.

For

use

on

25

cycles

supply,

a

special

motor

and

pulleys

are

required.

The

speed

of

the

R.C.

80/DC.

and

low

voltage

Models,

is

governor

controlled,

the

governor

being

located

at

the

lower

end

of

the

motor

and

is

screwed

on

to

the

armature

shaft

and

held

in

position

by

a

screw

through

the

governor

collar.

To

adjust

the

speed,

loosen

the

screw

in

the

governor,

and

turn

the

governor

a

very

small

amount

clockwise

to

increase

the

speed,

or

anti-clockwise

to

reduce

it.

Tighten

the

screw

before

running

the

motor

to

check

the

speed.

SPEED

VARIATION.

It

is

essential

that

the

driving

surfaces

of

the

three

brass

pulleys,

the

rubber

tyred

interwheel,

and

the

belts,

should

be

kept

absolutely

free

from

all

oil

or

grease.

This

is

the

fi

rst

point

which

must

be

checked

if

the

turntable

speed

varies

and

the

pulleys,

belts

and

inter-

wheels

should

be

cleaned

with

a

dry

cloth

if

contam

ination

with

oil

is

suspected.

Another

point

to

check

is

that

the

two

belts

run

centrally

on

their

pulleys;

should

they

tend

to

run

off

the

pulley,

try

removing

the

belt

and

turning

it

over.

If

this

does

not

cure

the

trouble,

a

new

belt

should

be

fi

tted.

Also

see

that

the

main

spindle

has

a

small

amount

of

end

play.

To

check

this,

remove

the

turntable

and

grip

the

main

spindle

firmly

lifting

it

up

and

down.

If

no

movement

is

felt,

loosen

the

two

screws

(diagram

10)

which

holds

the

fi

xed

portion

of

the

main

spindle,

raise

the

main

spindle

a

very

small

amount

and

re-tighten

the

screws.

SERVICE

ADJUSTMENTS

NOISE.

Should

the

drive

become

noisy,

fi

rst

see

that

the

screw

holding

the

pulley

to

the

motor

shaft

is

not

touching

the

intermediate

wheel

as

it

revolves.

If

it

is,

raise

the

pulley

by

loosening

the

screw

holding

it

to

the

shaft.

If

the

motor

pulley

is

correct,

then

lubricate

the

pulleys

as

described

under

"Maintenance."

MOTORS.

If

the

motor

fails

to

start

when

the

control

knob

is

turned

to

"Start,"

fi

rst

check

the

power

supply

and

ascertain

if

current

is

reaching

the

motor

terminals.

If

correct,

switch

off

the

mains

supply

and

examine

the

terminal

block

and

see

that

the

leads

and

screws

are

tight,

also

examine

the

switch

contacts

accessible

under

neath.

Clean

and

adjust

if

necessary.

On

the

R.C.

80/DC.

and

low

voltage

models,

examine

the

motor

brushes

and

make

sure

that

they

are

clean

and

making

good

contact

with

the

commutator.

Also

ensure

that

they

are

not

sticking

in

the

brush

tubes.

The

"Switch

Catch

Lever"

(diagram

10)

should

also

be

checked

to

see

that

it

is

engaging

when

the

knob

is

moved

to

"Start."

If

it

fails

to

engage,

adjustment

is

provided

on

the

link

which

operates

it

to

allow

it

to

drop

into

engagement

with

the

switch

lever

and

hold

it

in

position.

If

a

thick

oil

has

been

used

to

lubricate

the

motor

bearings,

the

motor

will

appear

weak

or

will

not

start.

It

will

then

be

necessary

to

dismantle

the

motor

and

clean

away

all

traces

of

the

thick

oil.

It

is,

there

fore,

essential

to

lubricate

the

motor

bearings

with

a

good

quality

thin

oil.

Should

the

motor

get

too

hot,

see

that

the

voltage

changeover

links

are

set

correctly

to

correspond

with

the

voltage

of

the

power

supply.

If

correct,

check

the

motor

windings

by

inserting

an

AC.

milli-ammeter

in

either

motor

lead.

The

maximum

current

consumption

of

the

R.C.

80/AC.

should

not

exceed

0.26

amps,

on

100/130

volts,

50/60

cycles,

or

0.13

amps,

on

200/250

volts

50/60

cycles.

On

the

R.C.

80/D.C.

the

current

should

not

exceed

.26

amps,

on

100/130

volts

or

.23

amps,

on

Page

Seven

RECORD

CLIP

7"

RECORD

PLATFORM

IN

BACK

POSITION

ADJUSTING

SCREW-

FOR

HEIGHT

OF

AUTO

TRIP

LEVER

PLATFORM

LEVER

^

FOR

RECORD

SIZE

IN

T

E

R

M

E

Dl

ATE^.^,-^

WHEEL

SPEED

CHANGE

KNOB-

SS'/s

R.P.M.

PULLEY-

MOTOR

PULLEY^

78

R.P.M.

45

R.P.M.

PULLEY

START

STOP

&

REJECT

KNOB

RECORD

PUSHING

PAWL

7"

/

RECORD

PUSHING

/

PAWL

I0"&I2"

DRIVING

BELTS

STRIKER

FIXING

SCREW

FOR

FINAL

SWITCH

OFF

ARM

^

FINAL

SWITCH

/OFF

ARM

ADJUSTING

SCREW

THRO'

HOLE

FOR

PICK-UP

DROPPING

/

POSITION

AUTO

TRIP

LEVER

^SCREW

UNDER

ARM

HOLDING

PLUG-IN

PICK-UP

HEAD

FOR

TRANSIT

AUTO

TRIP

PIVOT

PLATE

--....J^INS

TERMINAL

BLOCK

-

PLUG-IN

PICK-UP

HEAD

TRANSIT

FIXING

SCREWS

View

with

Turntable

Removed

Page

Eight