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Sony PS-X7
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PS-X6/X7
The
PS-X6
and
PS-X7
are
a
full-automatic
turn-
table
system,
which
means
that
the
tonearm
will
move
across
to
the
record
and
commence
to
play,
and
then
return
to
the
arm
rest
again
after
the
completion
of
the
record,
simply
by
the
operation
of
control
buttons.
This
cycle
of
operations
is
per-
formed
by
the
transfer
of
a
series
of
changes
from
the
main
gear
cam
to
the
main
lever.
This
series
of
changes
is
described
below.
Operations
During
Start
of
Play
1...
The
tonearm’s
horizontal
movement
1.
When
the
metal
part
of
the
START/STOP
button
is
touched
by
the
hand,
the
system
control
circuit
is
activated,
resulting
in
the
motor
commencing
to
rotate,
and
current
flowing
through
the
solenoid
(PM).
2.
With
current
flowing
through
the
solenoid,
the
kick
lever
is
pulled
in
direction
qd),
resulting
in
tip
A)
of
the
kick
lever
pushing
against
part
of
the
sub-gear
(L).
This
sub-gear
is
thus
pushed
out
in
direction
®
to
engage
the
center
gear
mounted
on
the
motor
shaft.
(See
Fig.
1-2.)
main
gear
center
gear
pivot
sub-gear
(R}
solenoid
(PM)
sub-gear
{L)
pivot
kick
lever
solenoid
(PM)
magnet
Note:
When
current
passes
through
the
solenoid,
the
magnet
exerts
a
force
in
the
direction
of
the
arrow.
(Fleming's
left
hand
rule.)
kick
lever
Fig.
1-2.
3.
Once
the
revolving
center
gear
engages
the
sub-
gear
(L),
the
main
gear
will
commence
to
rotate
in
the
counterclockwise
direction
due
to
the
driving-
force
supplied
by
the
motor.
It
will
stop
again
in
the
position
shown
in
Fig.
1-7.
4.
The
gear
guide
axis
at
the
tip
of
the
main
lever,
is
guided
by
the
shaded
section
of
the
heart-
shaped
cam
groove
located
on
the
main
gear,
moving
across
in
a
curved
path
GB)
to
position
@
.
Therefore,
the
main
lever
moves
in
the
direction
of
arrow
GB)
.
(See
Fig.
1-3.)
main
lever
center
gear
main
gear
Fig.
1-3.
5.
At
this
time,
the
lead-in
lever
moves
in
the
direction
of
arrow
(4),
guided
by
the
lead-in
cam
which
moves
together
with
the
main
lever.
The
tip.
®)
of
the
lead-in
lever
moves
to
position
(B),
pushing
against
a
pin
on
the
brake
drum
in
the
direction
of
arrow
©).
And
since
this
brake
drum
moves
in
unison
with
the
tonearm,
the
tonearm
will
moves
across
(horizontal
movement)
in
the
direction
of
arrow
G6).
(See
Fig.
1-4.)
lead-in
cam
lead-in
lever
tonearm

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