Garrard A70 Owners Manual

Page 2

THIS INSTRUCTION MANUAL and template apply to the
Garrard Laboratory Series Auto Turntables Types A70 and 70

Mk. II.

However, if spare parts are ordered, please be particularly careful to
quote both the type number and the code number on the coloured

label attached to your unit.

72655 Printed in England

ASSEMBLY INSTRUCTIONS
FOR TURNTABLE MAT

\\\
ASSEMBLE TURNTABLE MAT BY LAYING MAT
FLAT ON TABLE TAKING CARE NOT TO BUCKLE
TRIM RING. FIX MAT BY STRETCHING THE
CENTRE HOLE OVER THE TURNTABLE RETAINING
RING AS SHOWN IN DIAGRAM.

ENSURE MAT IS CENTRALISED CORRECTLY

BY SPINNING TABLE.

Printed in England at The Borough Press (Swindon) er

Page 9

When the cartridge is in position see that the pointer on the side
of the pickup arm, indicating stylus pressure, is set to its rear position,
i.e. no stylus pressure spring tension. If not, set the pointer to this
condition by turning the adjusting screw under the arm counterclock-
wise, looking from overhead.

Next, with the pickup arm perfectly free to pivot up and down,
adjust the position of the counterbalance weight, by loosening its locking
screw and sliding the weight along the arm until the arm balances
horizontally, then tighten the locking screw.

The stylus pressure required is then applied by turning the adjusting
screw under the arm clockwise, each click representing an increment of
approximately 5- gram and the markings representing approximately 0
to 5 grams.

Since the pickup arm skating force, which manifests itself when
there is low pivot friction, is related to stylus pressure, the bias com-
pensator setting will depend on the stylus pressure previously applied.
The longer arm of the bias compensator, carrying a setting weight, is
notched according to stylus pressure. The notches represent approx-
imately I to 5 grams from inner to outer notch. The setting weight
should be set to the appropriate notch. Grip the side of the setting
weight when adjusting its position and do not slide it nearer to the arm
pivot than is necessary.

Fitting Cartridge

A plug in pickup shell, designated M8, is used on the Type A70.
This may be supplied with or without a pickup cartridge. The pickup
head kit, part number 71208, comprises pickup shell, less cartridge and
accessory kit, part number 71216, allowing a wide range of cartridges
to be fitted.

The accessory kit consists of three alternative pairs of screws, two
washers, two spacers and a weight. The cartridge should be secured
centrally to the pickup shell using the screws of the appropriate length.
Use the washers under the screw heads if the holes in the cartridge har-
ness are larger than the screw heads. Use the spacers between cartridge
and pickup shell if more clearance is required. Use the weight as ballast
if a lightweight cartridge is fitted weighing less than 5 grams.

GREEN LEAD CARTRIDGE FIXING
BLUE LEAD scaew HOLES

WHITE LEAD
RED LEAD

Diagram 4
M8 PICKUP SHELL

Seven