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JVC L-A11 Service Manual page 4

Auto-return turntable

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L-A11
peiaeatce knob
This device cancels out the centripetal force that
pulls the tonearm to the center of the platter. This
prevents
the stylus tip from
skating toward
the .
center of the platter and at the same time elimi-
nates any excessive stylus tip force on the inner
wall of the record groove.
Turn the dial to the same number as the tracking
force dial.
EP adaptor
Place this adaptor onto the center spindle when
you play a record with a bigger center hole such as
a doughnut record.
Speed select knob
Select a proper position of the speed select knob
in accordance with the rpm of the record.
33-1/3 rpm record (LP) ........
33"
45 rpm record (EP})...........
Reject button
Arm lifter lever
When
you
stop
playing
the
record,
push
the
button
and
release
it. The button
returns to its
original
position
and the tonearm
lifts itself up,
returns
automatically
to its rest and the platter
This is used when you want the tonearm
gently
lifted up or lowered down. When you pull it to
"UP" position, the tonearm will be lifted up, and
when you push it to ''DOWN" position, it will be
stops rotatings.
lowered down gently onto the record surface.
Fig. 1
3. Operation of Automatic
Mechanism
Change cycle mechanism:
1. During
playing,
the notch
of the main
gear position
relative to the turntable spindle gear is as shown in Fig.
2. As the projection is away from the engagement, the
main gear does not rotate even though the turntable.
2. As playing proceeds,
the trip slide moves toward the
center of the turntable following the movement of the
tonearm.
3. The engagement
is very easy to move as it simply rests
on the lower trip. On the music section of the record
groove
the
engagement
moves
so
slightly
that
it is
returned by the tip of the projection. Consequently, the
turntable
spindle gear. does not engage with the main
gear and thus does not trigger the auto-return operation
as shown in Fig. 3.
Projection
Engagement
Platter spindle gear
Platter gear
Fig. 2
No. 2461

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