JVC L-A31 User Manual

6.
Adjustment
Procedures
.
The
following
adjustments
should
be
performed
only
when
replacing
a
cartridge
or
a
headshell.
Otherwise,
no
adjustment
is
required.
6-(1) Overhang Adjustment
To
obtain
optimum
overhang,
when
mounting
the
car-
tridge,
first
align
the
cartridge’s
longitudinal
axis
with
that
_of
the
headshell
and
position
the
cartridge
so
that
the
distance
between
the
headshell’s
end
face
and
the
stylus
tip
equals 32mm as shown in Fig. 9. ‘
Be
sure
to
tighten
the
set
screw
after
the
adjustment.
Errors
“within
Imm
are
negligible
from
a
practical
point
of
view.
6-(2)
Anti-skating
Adjustment
Adjust
the
anti-skating
force
according
to
the
cartridge
used.
Turn
the
anti-skating
knob
dial
to
the
same
number
on
the
tracking
force
dial.
Use
the
©
marked
dial
when
employing
a
spherical
stylus.
Use
the
am
marked
dial
for
an
elliptical
or
a
Shibata
stylus.
Set
the
“1.75”
of
the
©
marked
dial
to
the
index
line
since
the
L-A31
is
provided
with
a
spherical
stylus
ard
the
track-
_ing
force
has
been
adjusted
to 1.75.
(Fig.
10)
-6-(3)
Tonearm
Lifter
Height
Adjustment
Adjust
the
height
of
tonearm
lifter
with
the
adjustment
screw
$o
that
the
distance
between
the
stylus
tip
and
the
surface
of
record
is
about
6mm
when
the
stylus
is
elevated.
Turn
the
height
adjustment
screw
clockwise
to
lower,
and
counterclockwise
to
raise
the
tonearm
lifter
level.
(See
Fig.
11.)
6-(4)
Auto-return
(Lead-out)
Adjustment
When
the
pulley
has
been
replaced
for
a
different
record
or
if
auto-return
functions
early,
adjust
as
shown
in
Fig.
12.
—
When
change
cycle
starts
too
late,
turn
the
screw
count-
terclockwise
with
a
screwdriver.
— When change cycle starts too early, turn the screw clock-
wise.
6-(5)
Tracking
Force
Adjustment
(Fig.11)
. Set the anti-skating knob to the “0” mark on the dial.
. Place an unwarped disc onto the platter.
. Remove the stylus cover from the stylus.
. Release the tonearm clamp. ,
. Turn the counterweight until the tonearm is balanced.
.
Stop
turning
the
counterweight
when
the
stylus
tip
is
almost
touching
the
disc
surface.
7. Return the tonearm to the rest and clamp it.
Qn le& WN
If
necessary
to
replace
a
cartridge,
usage
of
that
headshell
exclusive
to
this
unit
is
recommended.
ed
32mm
-
-——
Fig.
9
Fig. 10 -
Fig. 11
Adjustment Screw
Fig. 12
8. Hold the counterweight at the adjusted position and
turn the tracking force dial until the 0" mark is aligned
with the index line on the tonearm weight shaft.
Turn the counterweight in the A direction until the
1.75" mark on the dial is aligned with the index line
for the model preparing cartridge Z-1S except U.SA.,
Canada and U.K..
-A31

JVC L-A31 Specifications

General

Brand	JVC
Model	L-A31
Category	Turntable
Language	English