Garrard A User manual

AUTO TURNTABLE
TYPE A
LT

Garrard
LABORATORY SERIES
AUTO TURNTABLE — TYPE A
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Introduction
The
Garrard
Auto
Turntable
Type
A
has
been
designed
to
play
records
singly
with
Transcription
Turntable
quality,
at
the
same
time
having
the
advantage
of
being
able
to
play
a
number
of
records
automatically
when
desired.
Its
styling
is
ultra
modern
and
special
attention
has
been
given
to
detail,
ensuring
the
best
possible
performance.
As
the
owner
of
this
Garrard
Auto
Turntable
Type
A,
you
have
a
unit
whose
performance
is
supreme
in
its
class
and
rigorous
laboratory
checks
have
been
applied
to
your
unit
to
ensure
that
this
high
standard
is maintained.
This leaflet has been prepared to help you enjoy and maintain
the high performance of which this unit is capable.
Should you require any further information or advice not covered
by
this
leaflet,
please
do
not
hesitate
to
ask
your
nearest
Garrard
agent
or
write
to
our
Technical
Service
Department,
Newcastle
Street,
Swindon, who will be pleased to help you.
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Two

Operation
The Garrard Auto Turntable Type A will play records manually,
or any number up to six of the same size and speed, automatically. It
will play 7”, 10” and 12” records at 163, 334, 45 or 78 r.p.m.
Supplied with a short record spindle and adaptor for, playing
records manually, also a sloping stepped and a large record spindle for
playing records automatically.
To operate for manual play:—
1. Set correct stylus for type of record to be played.
2. Move speed change control to correct speed.
3. Place short record spindle in position, also adaptor if playing
45 r.p.m. records with large centre hole.
4. Move record platform to rear position.
5. Place record on turntable, switch on by “manual” control and
place pickup on record.
To operate for auto play:—
1. Proceed as tor I and 2 above.
2. Place stepped or large record spindle in position according to
type of record to be played.
3. Set record platform rear position for 12” and forward position
for 10” records. For 7” records, platform position is immaterial.
4. Place any number of records up to six of the same size and
speed on record spindle and switch on by “Auto” control.
Reject
To reject a record being played, move the Auto Control to “Reject.”
The pickup will immediately rise and return to its rest position and
the motor switch off when playing one record. On “Auto” the next
record will drop and the pickup will continue to play.
Stop
To stop leaving the pickup on the record, move the Manual Control
to “Off.” The pickup will continue to play the same record on using
the same control to switch “On.” This is useful for temporary stops
such as when answering the telephone. To stop the unit with the pickup
on its rest, move the Auto Control to “Off.” The pickup will immediately
rise, return to its rest and the unit switch off.
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Four

Maintenance
The motor and intermediate wheel bearings are of the oil retaining
type and rarely need lubricating. When the need for oil is apparent,
hold the intermediate wheel away from contact with the motor pulley
and lubricate the top motor bearing with a fine grade of machine oil; that
used
for
sewing
machines
is
suitable.
Also
lubricate
the
intermediate
wheel bearing, the bearing in the top of the turntable spindle and, very
occasionally,
the
bottom
motor
bearing.
Remove
all
traces
of
surplus
oil
before
running
and
make
sure
that
the
motor
pulley,
running
surface
of
the
intermediate
wheel
and
inside
of
turntable
rim
are
clean
and
free
from oil. Oiling points are shown on diagrams two and six.
To
remove
turntable
to
gain
access
to
the
oiling
points,
first
remove
the
turntable
mat
by
pulling
it
off
the
centre
boss,
then
lift
off
the
outer
turntable.
Next
remove
the
nameplate
in
the
centre
by
levering
it
up-
ward
with
a
screwdriver
or
penknife
in
one
of
the
slots.
The
retaining
clip
is
then
accessible
and
should
be
removed.
Remove
the
turntable,
with
foam
mat
attached,
by
lifting
with
the
fingers,
applying
equal
pres-
sure
on
diametrically
opposite
sides.
Should
the
turntable
be
difficult
to
remove
place
the
short
manual
record
spindle
in
position
and,
while
lift-
ing
the
turntable
as
described,
get
an
assistant
to
give
the
top
of
the
record
spindle
a
tap
with
a
piece
of
wood,
such
as
the
handle
of
a
screwdriver.
The
turntable
should
be
replaced
with
unit
in
switched
off
position,
instructions
for
its
reassembly
is
given
on
page
six.
Installation
Dimensions
The
Type
A
Auto
Turntable
is
15”
long
by
122”
back
to
front*®
(see
under)
by
23”
below
and
53”
above
top
of
motor
board.
An
additional
4”
on
the
height
and
all
round
the
edges
are
required
to
permit
unit
to
freely
float
on
its
suspension
springs.
*An
extra
13”
is
also
required
at
rear
of
pickup
arm
and
on
right-hand
side
to
allow
clearance
for
counterbalance
weight,
see
template.
Fitting
The
motor
board
should
be
drilled
and
cut
out
to
the
template
supplied.
Do
not
moisten
the
template
as
it
may
distort,
but
fix
it
with
self-adhesive
tape.
Five

Having opened the carton, remove cardboard packing and acces-
sories. Lift out unit with fingers under the back and front edge of
unit plate. The heavy outer turntable and its rubber mat will be found
packed under the bottom liner. Remove all string and elastic bands.
The spring suspensions assembled to the unit are designed for boards
3” thick or less. Should the board be thicker than 3”, the four holes
should be recessed underneath 11” diameter to give a maximum of }”
thickness. If not already fitted, connect a power supply lead to the
connecting block, diagram six. The motor should be earthed by con-
necting a lead from a good earthing point to the earthing tag located
at rear of plate holding connecting block, also connect the audio leads
from the amplifier to the pickup connecting strip as shown on diagrams
three and four.
Place unit in position over motor board with the flat springs of the
spring suspension resting over the 3” dia. holes and press downward.
The flat springs will clip into position. Adjust the unit for level by
turning the turn wheels projecting from the edge of the unit plate,
diagram five, turning clockwise to lower and counterclockwise to raise
the unit. For assembling the pickup counterbalance weight see instruc-
tions “Pickup and Arm”.
The “Heavy Outer Turntable” has been balanced and to maintain
the full advantage of this, marking in the form of two triangles is pro-
vided to enable it to be fitted in the intended position with the two
triangles facing each other.
GREY BROWN
Connections for Monophonic Pickups
Diazram Three
LEFT HAND GREY
CHANNEL
BROWN
~~
‘yy .
SCREEN. a RIGHT HAND
.
ENG
CHANNEL
CF ae OR
rT sm
LEADS TO AMPLIFIER (5)
Connections for Stereophonic Pickups
Diagram Four
Six

Before
shipping,
the
transit
screws
(copper
plated
for
identification)
should
be used
to
hold
the
unit
firmly
to
the
motor
board.
Use the fibre washers under the screw heads to prevent marking
plate.
These
screws
must
be
removed
before
operating
the
unit.
Pickup and Arm
Unpack
the
pickup
arm
counterbalance
weight
and
slide
it
on
rear
of
arm,
as
shown
on
diagram
two,
tighten
the
screw
to
hold
it
in
position.
If
the
unit
is
received
without
a
pickup
cartridge,
the
cartridge
of
your
choice
shouid
be
fitted
by
means
of
the
instructions
and
hard-
ware
supplied
with
the
pickup
shell.
When
the
cartridge
is
in
position
see
that
the
pointer
indicating
the
stylus
pressure
on
side
of
arm
is
in
the
rear
position
with
the
spring
tension
released.
If
not,
loosen
the
screw
under
the
arm,
slide
pointer
until
it
is
as
far
back
as
it
will
go
and
tighten
the
screw.
Next
adjust
the
position
of
the
counterbalance
weight
on
rear
of
arm
by
loosening
the
screw
holding
it
and
sliding
the
weight
along
the
arm
until
the
point
of
balance
with
the
pickup
head
is
attained,
then
firmly
tyyhten
the
screw.
Now
loosen
the
screw
holding
the
stylus
pressure
adjustment
and
slide
it
forward
toward
the
pickup
head
until
the
pointer
indicates
the
stylus
pressure
required
on
the
scale
on
the
side
of
the
arm.
Voltage and F requency
The
Garrard
Auto
Turntable
Type
A
is
a
dual
voltage
model,
suit-
able
for
100/130
volts
and
200/250
A.C.
It
may
be
used
on
50
or
60
cycles
according
to
the
size
of
motor
pulley
supplied.
The
motor
pulleys
are
colour-finished
for
easy
identification
Nickel
for
50
and
Brass
for
60
cycle
power
supply.
When
ordered
for
use
on
either
of
these
frequencies
the
correct
pulley
will
be
fitted.
}
The
motor
should
be
earthed
by
connecting
a
lead
from
the
earthing
tag,
located
on
rear
of
bracket
holding
the
connecting
block,
to
a
good
earthing
point,
diagram
six.
If
the
unit
is
connected
to
an
amplifier
with
its
Wiring
not
isolated
from
the
power
supply,
isolating
components,
condensers
or
trans-
formers
should
be
incorporated
in
the
pickup
circuit,
otherwise
the
pickup
circuit
can
become
live.
If
in
doubt,
consult
your
radio
dealer.
Seven

TURN WHEEL
TO ADJUST
FOR LEVEL
SPRING SUSPENSION ASSEMBLY
POWER SUPPLY AND VOLTAGE
CHANGE OVER BLOCK
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Eight
OIL
Diagram Five
MOTOR
PICKUP CONNECTING STRIP
AND MUTING SWITCH
Diagram Six

Service Adjustments
These notes are included to assist in making any minor adjustments
that may become necessary. When making an adjustment protect the
pickup
by
fitting
its
protecting
clip,
or
if a
turnover
pickup
having
a
safety
mid
position,
turn
to
this
position
to
protect
the
styli
from
possible
damage. -
Speed
The Garrard Type A Auto Turntable is designed to give the desired
turntable speed within close tolerances. Should, however, the turn-
table
run
excessively
fast
or
slow,
the
motor
pulley
may
not
be
correct
for the frequency of the power supply. These pulleys are colour finished
for identification, Nickel for 50 and Brass for 60 cycles. To gain access
to
the
motor
pulley,
remove
the
turntable
as
described
on
page
five
under
“Maintenance”.
Should the speed vary during playing, examine the motor pulleys,
rubber
intermediate
wheel
and
inside
of
turntable
rim
for
traces
of
oil,
wipe
thoroughly
with
a
clean
cloth.
Check
that
the
motor
pulley
is
in
its
correct
position
on
the
motor
shaft
and
that
both
screws
are
tight.
See
that
the
intermediate
wheel
runs
in
the
centre
of
the
appropriate
pulley
step
and
does
not
rub
on
the
side
of
the
adjacent
step.
If
necessary,
loosen
the
screws
holding
the
pulley
to
the
shaft
and
move
pulley
to
its
correct position.
Motors
If
the
motor
fails
to
start
when
the
unit
is
switched
on,
check
the
power
supply
to
see
that
current
is
reaching
the
motor.
Also
check
the
switch
and
see
that
the
switch
blades
are
clean
and
making
good
con-
tact,
position
shown
on
diagram
two.
Check
the
position
of
the
voltage
change
over
links
on
the
dual
voltage
range
model
and
make
sure
the
motor
is
suitable
for
the
voltage
—
of
the
power
supply.
Motor
details
will
be
found
stamped
around
the
flange
of
the
bottom
bearing
cover,
diagram
six.
Pickup Dropping Position
The
pickup
dropping
position
is
factory
set
for
optimum
accuracy,
but
adjustment
may
be
required
after
fitting
a
new
pickup
cartridge
or
to
play
abnormal
records.
To
adjust,
turn
the
horizontal
screw
situated
immediately
under
the
pickup
arm
cross
pivot,
clockwise
to
move
pick-
up
inward
and
counterclockwise
to
move
outward,
position
shown
on
diagram
one.
Nine

Pickup Height
The distance the pickup lifts when on auto can be adjusted by
turning the screw on top of the pickup arm just rear of the cross pivot.
Turning the screw clockwise raises the pickup, counterclockwise lower's
it. The height should be set by placing six records on the turntable and
turning the adjusting screw so that the stylus clears the top record by }”
as it passes over it when returning to Its rest position.
Pickup Stylus Pressure
The stylus pressure is adjusted as described under “Installation” |
Pickup and Arm, page seven.
Pickup Tracking
Should there be a tendency for the pickup to track incorrectly
especially at low stylus pressures, check that the leads from the rear
of the pickup arm are free and clear of the sides of the slot where they
pass through the unit plate. Check that the stylus pressure is that
recommended by the cartridge manufacturer. Also see that the unit is
level by placing a spirit level on a record on the turntable. Check in
two directions, side to side and back to front, turning the spring suspen-
sion turn wheels to adjust as described on page six.
Pickup Muting Switch
The pickup is muted on both channels by means of two switches
which short circuit the pickup connections during the time the changing
mechanism 1s in action.
Auto Trip
The auto trip is of patented design, being extremely light and
sensitive in operation. A special feature is that the trip is completely
disconnected from the pickup arm at the commencement of the trip
operation. It is the well proved velocity type which is actuated by the
accelerated movement of the pickup as it reaches the run out groove in
the centre of the record. It is set to commence operation when the stylus
reaches a radius of 24” from the centre.
Should the trip fail to operate, leaving the pickup running in the
centre of a record, remove the turntable as described on page five and
adjust the height of the auto trip operating lever. Give the adjusting
screw for height of operating lever, diagram two, about a half turn in a
clockwise direction to raise the lever. This will enable it to engage the
cam on the striker, as the pickup movement accelerates. Also check that
the auto trip friction plate, diagram two, is clean and free from oil and
dust.
Ten

SPARE PARTS LIST
The
Schedule
Number
printed
on
the
specification
label
under
T.T.
mat
of
the
Record
Changer
is
changed
whenever
non-interchangeable
variations
are
introduced
into
the
mechanism.
It
is
therefore
essential
when
ordering
spare
parts
to
quote
the
Schedule
Number
of
the
Record
Changer
as
well
as
the
Reference
Number
of
the
part
required.
Name
of
Part
Ref.
No.
Record
Spindle
(Sloping)
_...
...
B.5§2764
Record
Spindle
(Large)
Type
LRS3_
...
B.52950
Record
Spindle
(Manual)...
a
...
A.5§1347
Adaptor
for
45
r.p.m.
records
_
...
A.50391
Turntable
(nner)...
_
_
...
B.533904
Turntable
(Heavy
Outer)...
_
...
©€.57578
Rubber
Mat
_
a
Le
...
©€.§7422
Foam
Mat
a
a
-_
...
A.§7753
Pickup
Arm
(complete)
a
...
€.§7580
Intermediate
Rubber
Drive
Wheel
_
...
B.53883
Motor
Pulley
50
cycles
_ _
...
A.§5643
Motor
Pulley
60
cycles
a _
...
A.55644
Cover
for
Changeover
Block
-
...
B.58179
Fixing
Nut...
vee
_
...
A.4IOI2
Cover
for
Switch
Block
_ _
...
A.5§1327
Fixing
Screw
...
-
_
...
A,40343
Switch
Contact
Spring
a a
...
A.41686
Rotor
Spindle
with
Rotor
...
A.54929
Garrard
Ms
Multi
Purpose
Plug-in
Pick-
up
Case
Assembly
(less
cartridge)
with
open
front
for
turnover
cartridges
...
A.56802
Garrard
Ms
Multi
Purpose
Plug-in
Pick-
up
Case
Assembly
(less
cartridge)
with
closed
front
or
turnround
or
single
purpose
cartridges
_
_
...
A.5§6804
Replacement
Styli,
both
Sapphire
and
Diamond,
available
for
all
Garrard
Pickups
Genuine
Garrard
Styli
give
best
results
THE
GARRARD
ENGINEERING
AND
MANUFACTURING
CO.
LTD.
SWINDON
-
WILTSHIRE
-
ENGLAND
Eleven