THORENS TD-150 - Ground connection; Cartridge alignment; Vertical tracking angle

Ground connection:
—
The
unit
plate
and
the
metal
part
of
the
arm
are
connected
in
A
to
the
shield
of
the
right
channel
cable
acting
as a ground lead.
—
The
shield
of
the
left
channel
cable
is
insulated
from
the
base
plate
of
the
turntable
and
from
the
metal
parts
of the arm.
The
spring
mounted
parts
of
the
turntable
are
connected
to
the
fixed
unit
plate
by
ground
lead
D.
Lug
E
should
be
fastened
on
the
metal
frame
by
the
corresponding
set
screw
of
the
pick-up
wooden
board.
I
necessary
for
particular
cartridges
or
amplifiers,
two
different
wiring
systems
may
be
easily
realized:
Connect
lugs
3.and
4
on
the
terminal
strip
with
a
wire
B;
the
shields
of
both
channels
are
thus
connected
together
arrd to the unit
plate.
5 wire system
When
the
ground
for
the
turntable
cannot
be
returned
to
the
amplifier
ground
through
the
signal
carrying
shieldings,
the
wire
connecting
lugs
1
and
3
should
be
cut
at
A
and
a
separate
insulated
wire
C
connected
from
lug
1
to
the
common
grounding
point
for
the
amplifiers.
© Cartridge alignment
The
new
patented
plug-in
shell
allows
to
adjust
first
the
vertical
tracking
angle
and
then
the
stylus
overhang
for optimum
tracking.
Vertical tracking angle
a)
Loosen
slightly
the
two
screws
A
on
both
sides
of
the
shell
and
small
screw
B
(see
Fig.
7).
b)
Insert
the
shell
plug
in
the
arm
socket,
allowing
the
locating
pin
to
enter
the
slot.
Press
inward
and
tighten
the
locking
nut
firmly,
but
not
more
than
necessary.
This
operation
is
best
performed
when
the
arm
is
clamped
in
the
arm
rest.
"