JVC JL-F50 User Manual

As
the
elevator
cam
moves,
its
inclined
face
lifts
the
elevator,
which
in
turn
lifts
the
tonearm.
In
Fig.
7,
the
lead-in
lever
is
moved
in
the
direction
(a)
by
the
counterclockwise
rotation
(b)
of
the
driving
gear,
as
shown
in
Fig.
6.
As
a
result,
the
lead-in
lever
passes
the
arm
lever
stud
(A)
without
touching
it.
Therefore,
the
arm
lever
does
not
move.
During
the
next
process
shown
in
Fig.
8,
the
lead-in
lever
strikes
against
the
reset
plate
and
is
pushed
back
in
the
direction
(a).
When
the
driving
gear
returns
in
the
clockwise
direction
(B),
this
time
the
lead-in
lever
pushes
the
arm
lever
stud
(B),
and
the
arm
lever
stud
is
moved
in
the
direction
of
the
arrow,
as
shown
in
Fig.
9.
This
finishes
the
final
stage
of
the
lead-in
operation.
Arm lever stud (B) Push lever
Lead in lever
Link
PPPS #5222
Push lever
“—~ Driving gear
Link
Fig. 7
Driving gear Driving gear
Push lever
Push lever
stud (A)
Arm lever stud (A) Lead in lever
Reset plate Reset plate
Fig. 8 Fig. 9
The stylus is positioned at the beginning of a record
according
to
the
record
size
(17,
25,
or
30cm)
chosen
with
the Record Size Select knob. The stylus position ts
determined by one of three steps on the index lever shown
in Fig.10. Part @ of the arm lever engages the
corresponding step on the index lever.
Turning
this
eccentric
adjustment
screw
will
move
the
arm
lever
to
fine-adjust
the
stylus
lead-in
position.
iy oe
JL-F50
Select plate
P Select knob
Fig. 10
4-(4)
Return
cycle
starting
mechanism
The
relationship
between
the
notch
in
the
main
gear
and
the
platter
gear
while
a
record
is
being
played
is
shown
in
Fig.
11.
In
this
condition
the
main
gear
does
not
rotate
as
the
platter
rotates
because
the
platter
gear
and
main
gear
are
not
engaged.
As
playing
proceeds,
however,
the
arm
lever
presses
the
trip
lever
to
gradually
more
the
lower
trip
and
the
engagement
shoe
on
the
main
gear.
Projection
Engagement
shoe
Platter gear
Main gear notch
Fig. 11
Boss Main gear
Engagement ;
Shoe
Projection
Platter gear i ~ Stud
Lower trip
Fig. 14
The relationship between the engagement shoe and the
platter gear comes to a state shown in Fig. 12. In this
condition, during the time in which the pitch of the grooves
is small, the movement of the engagement shoe is sinall.
The engagement shoe is thus pushed back by the nose of
the engagement shoe, the main gear being still.
When the stylus comes into the lead-out groove having a
large pitch at the end of a record, the movement of the
engagement shoe becomes larger than the reverse Movement
caused by the projection nose, entering the state which is
shown in Fig. 13,. where the projection presses the
engagement shoe to cause the main gear to rotate.
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JVC JL-F50 Specifications

General

Brand	JVC
Model	JL-F50
Category	Turntable
Language	English