JVC QL-A2 Service Manual

3. Features
Quartz-locked speed contro! system
DC type FG servomotor
Quartz-locked one-row stroboscope
Oil-damped cueing
Anti-skating mechanism
2. Service Precautions
1. Be sure to place the unit on a level surface when adjust-
ing motor rotation.
2. In servicing, do not use parts other than those specified.
3. Be careful not to damage the motor shaft when repairing
the motor unit.
4. When the heat sink (including X815) is removed from
the motor board to permit repair of the circuit board,
the transistor temperature may increase due to the lack
of heat radiation.
4. “How to Operate’’ (Names and Functions)
EP adaptor
Place this adaptor onto the center spindle when
you play a record with a bigger center hole such as
a doughnut record.
Anti-skating 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.
Use
the
@
marked
dial
when
employing
a
spherical
stylus.
Use
the
a
marked
dial
when
employing
an
ellipti-
cal
stylus
or
a
Shibata
stylus.
Turn
the
dial
to
the
same
number
as
the
tracking
force
dial.
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)
Tonearm lifter lever
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
lowered down gently onto the record surface.
Stroboscope pattern Reject lever
QL-A2
No. 2444
A single stroboscope pattern is equipped on the
rim of the platter. When the turntable rotates at
either 33-1/3 or 45 rpm, the striped pattern will
appear stationary to indicate that the turntable
speed is correct.
When you stop playing the record, push the lever
in the direction of arrow toward “REJECT” and
release it. The lever returns to its original position
and the tonearm lifts itself up, returns automat-
ically to its rest and the platter stops rotatings.

JVC QL-A2 Specifications

General

Drive System	Direct Drive
Motor	DC servo motor
Speeds	33 1/3 and 45 rpm
Platter	Aluminum die-cast
Wow and Flutter	0.03% WRMS
Effective Length	220 mm
Overhang	15 mm
Tonearm	Static balance S-shaped tonearm