Goldring G99 Manual de usuario

INSTRUCTION

MANUAL

FOR

GOLDRING"G.99"

TRANSCRIPTION

UNIT

Description

This

Goldring

G99

transcription

unit

has

been

developed

particularly

for

those

High-

Fidelity

enthusiasts

who

require

unit

high

transcription

quality,

but

wish

use

transcription

arm

their

own

choice.

offers

complete

freedom

mounting

arrangements.

The

G99

styled

the

modem

idiom

famous

industrial

designer.

The

hardened

steel

centre

spindle

runs

sintered

bronze

bush

with

special

thrust

pad.

The

pole

constant

velocity

motor

limits

changes

turntable

speed

less

than

for

13%

change

line

voltage.

Rumble

and

hum

are

negligible.

Maximum

wow

and

flutter

0.2%.

The

turntable,

which

die-cast

from

zinc

alloy,

non-magnetic

and

weighs

Ibs.

thick

rubber

mat

fitted.

Another

feature

the

push-button

on-off

switch

which

also

engages

and

disengages

the

drive.

neon

pilot light

gives

the

"99"

added

refinement.

The

switch

circuit

entirely

click

suppressed.

vertical

idler

wheel

transmits

drive

from

the

motor

the

underside

the

turntable.

The

speed

infinitely

variable

over

the

range

30/80

r.p.m.

and

from

15/18

r.p.m.,

and

altered

means

rotary

knob

which

system

gears

and

levers

moves

the

idler

wheel

along

conical

drive shaft

the

motor.

neon-lit

stroboscope

built

into

the

unit

and

very

accurate

speed

settings

are

possible.

Specification

Mains

200-250V

c.p.s.

pole

constant

velocity

motor

Continuously

variable

speed

control

8Ib

non

magnetic

turntable

Neon

lit

stroboscope

Centre

spindle

lapped,

hardened

steel

sintered

bronze

main

bearing.

Wow

and

flutter

less

than

0.2%

Rumble

and

hum

negligible

Turntable

speed

less

than

variation

for

13%

mains

voltage

change.

Fully

positive

drive

and

accurate

control

through

precision

conical

shaft

and

vertical

idler

wheel.

Automatic

disengagement

idler

wheel.

Dimensions

Front

back

inches

Side

side

inches

Turntable

diameter

inches

Clearance

above

motor

board

dependant

the

arm

used

Clearance

required

below

motor

board

inches

Installation

and

Operation

WARNING

The

motor

held

position

two

transit

screws

'B'

for

safety

transit.

Before

the

unit

played

these

must

removed

UNPACKING.

This

unit

was

carefully

checked

before

leaving

the

factory.

Observe

the

conditions

the

packing

carton

for

signs

improper

handling

transit.

damage

apparent

make

immediate

claim

the

dealer

from

whom

you

made

the

purchase.

Check

that

all

items

shown

paragraph

are

complete.

BASEBOARD.

The

unit

should

mounted

wooden

baseboard

¥2

inch

thick

and

large

enough

accommodate

the

unit

and

separate

pick-up

arm.

The

board

should

cut

provide

one

large

cut-out

and

drilled

for

three

holes

1/8

inch

diameter.

The

position

the

cut-out

and

the

holes

may

obtained

either

these

two.

methods:

(a)

Cover

the

baseboard

with

carbon

paper

laid

face

downwards

and

fix

the

template

the

desired

position

with

drawing

pins;

then

scribe

the

heavy

outline

the

cut-out,

that

the

line

reproduced

the

baseboard

the

carbon

paper.

(b)

Attach

template

the

baseboard

with

self

adhesive

tape

with

pins,

and

prick

through

the

template

with

sharp

pointed

instrument

such

scriber

bradawl.

Fig

Top

View

Top

plan

TURNTABLE

SPINDLE

RANSIT

SCREWS

FIXING

HOLES

IDLER

WHEEL

SPRING

IDLER

WHEEL

ARM

IDLER

WHEEL

CIRCLIP

SLIDEWAY

ON-OFF

SWITCH

KNOBS

MAINS

INDICATOR

NEON

STROBOSCOPE

VIEWING

APERTURE

ROTARY

SPEED

CHANGE

KNOB

Fig

Underside

View

Underside

plan

SWITCH

CLICK

SUPPRESSOR

EARTH

TAG

MAINS

LEAD

IDLER

WHEEL

IDLER

WHEEL

LOCKNUTS

MOTOR

CONE

MOTOR

POVNOZE

Fig.3.

Wiring

diegram

CONTENTS

CARTON.

The

following

Items

are

contained

the

carton:

(a)

The

turntable

packed

cardboard

sleeve.

(b)

Rubber

turntable

mat.

(c)

The

motor

unit

complete.

(d)

Fixing

screws.

MOUNTING

PROCEDURE.

The

unit

should

screwed

down

the

wooden

baseboard

means

the

wood

screws

provided.

The

fixing

holes

"C"

coincide

with

the

drilled

holes

the

baseboard.

Having

screwed

the

baseplate

into

position

remove

the

two

red

transit

screws

"B”

which

hold

the

motor

"'R"

against

the

baseplate.

TURNTABLE.

Place

the

turntable

over

the

centre

spindle

"A",

ensuring

that

properly

seated.

Place loose

rubber

mat

over

centre

spindle.

order

remove

the

turntable

apply

sharp

tap

with

wooden

block

the

centre

spindle

while

lifting

the

turntable.

MAINS

SUPPLY.

The

unit

normally

supplied

for

200/250

volts

cycles

A/C

mains.

Connect

the

mains

lead

"N"

your

supply,

ensuring

that

before

this

done

the

unit

the

"OFF"

position.

earth

tag

"M"

fitted

the

baseplate

and

recommended

that

separate

lead

taken

from

this

lead

either

earth

point

the

amplifier

external

earth

point.

The

unit

now

ready

for

playing.

PLAY.

Press

the

button

"H"

marked

"ON".

This

will

switch

the

motor

and

illuminate

the

neon

light

"I".

the

same

time

will

engage

the

Idler

Wheel

"O".

Allow

few

minutes

for

the

motor

warm

before

playing

records.

SPEED

ADJUSTMENT.

The

turntable

speed

altered

turning

the

speed

change

knob

"K",

increase

speed

should

turned

clockwise,

and

reduce

speed

anti-clockwise.

Stroboscopic

markings

are

visible

through

the

window

"E".

The

Inner

band

markings

correspond

speed

r.p.m.,

whilst

the

middle

and

Outer

hands

correspond

and

1/3

r.p.m.

respectively.

When

the

bars

any

one

particular

band

appear

remain

stationary,

the

speed

for

that

setting

exact.

When

the

bars

appear

move

the

left

the

speed

fast,

and

similarly

when

the

bars

appear

move

the

right

the

speed

slow.

IMPORTANT.

Always

switch

off

the

motor

before

switching

off

the

mains

supply.

MAINTENANCE

SERVICE.

The

motor

bearings

and

turntable

spindle

bearings

are

self

lubricating

and

further

lubrication

necessary.

Should

the

slide-way

"G"

the

speed

change

mechanism

run

dry,

then

small

amount

Vaseline

should

applied.

Care

must

always

taken

however

that

the

underside

the

turntable

and

the

idler

wheel

"O"

kept

clean

and

free

from

grease.

the

turntable

does

not

rotate

but

the

motor

going,

then

the

idler

wheel

spring

"D"

needs

replacing.

the

motor

does

not

operate

but

the

noon

light

"I"

on,

then

the

motor

has

developed

fault

and

should

repaired.

the

neon

light

does

not

come

when

the

unit

switched

on,

the

wiring

should

checked

per

Fig.

the

motor

continues

turn

when

the

unit

switched

off,

then

the

switch

click

suppressing

condenser

"L"

faulty

and

should

replaced.

the

speed

erratic

rumble

develops,

then

the

idler

wheel

"J"

should

cleaned

with

carbon

tetrachloride

should

the

underside

the

turntable

and

the

motor

cone

"Q".

Should

flat

appear

the

idler

wheel,

then

this

should

replaced.

replace

idler

wheel

remove

the

circlip

"F"

and

unhook

spring

"D"

then

lift

out

the

idler

wheel

arm

"E".

The

idler

wheel

secured

two

lockouts

"P".

Undo

these

and

slide

the

old

idler

wheel

off

the

spindle.

Fit

the

new

idler

wheel

the

spindle,

taking

care

not

touch

the

rubber

ring.

not

over

tighten

the

locknuts.

Replace

assembly

and

refit

spring

and

circlip.

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