Technics SL-230 Service Manual

set:
therefore,
be
sure
to
keep
the
““memo-repeat”’
knob
in
the
‘‘0”
position.
e
After
play
is
completed,
fasten
the
tonearm
with
the
arm
clamp
and
set
the
speed
selector
to
the
el,
position.
e
Attach
the
stylus
protector
again,
if
you
have
one,
to
protect
the
stylus
tip
from
damage.
e
Records
having
sizes
other
than
17
cm,
25
cm
and
30
cm
(7,
10”
and
12”)
should
be
played
manually.
Your
turntable
is
designed
for
automatic
handling
of
records
that
adhere
to
accepted
industry
dimensions.
Therefore,
use
the
unit
manually
for
records
other
than standard sizes.
Repeat play
Set
the
speed
selector
and
record
size
selector
in
the
same
manner
as
in
automatic
play.
Set
the
‘‘memo-repeat”
knob
to
the
desired
number
of
times
you
wish
to
play.
(See
Fig.
7.)
—
“R" nosition enables you to repeat play continuously.
Subsequently,
follow
the
same
procedures
as
for
the
automatic (auto-start) play. .
memo-repeat
1 2 3 4
Memo-repeat knob
Note:
¢
The
‘‘memo-repeat’’
knob
may
be
moved
either
left
or
right
without
any
inconvenience,
but
care
should
be
taken
not
to
move
it
when
the
tonearm
is
moving
in
the
automatic
start
or
automatic
return
cycle.
ms ADJUSTMENTS
Adjustment of the anti-skating control
Set
the
anti-skating
control
knob
to
the
same
value
as
the stylus pressure. (See Fig. 8.)
Note:
¢ When a cartridge with integral dust brush is used,
follow the cartridge manufacturer’s recommendation
for adjusting both stylus pressure and anti-skating
force.
Adjustment of arm-lift height (See Figs. 9 and
10.)
e The arm-lift height distance between the stylus tip
and record surface when cueing control is at ‘“¥”
has been adjusted at the factory before shipping to
approximately 5 to 10 mm.
e For using different cartridges available on the market
or when further adjustments are particularly neces-
sary, make adjustment as follows:
1. Put on the stylus protector to protect the stylus tip
from damage.
2. Set the speed selector to the “‘e’’ position to prevent
the turntable platter from rotation.
3. Move the tonearm towards the center spindle.
4. Turn the adjustment screw clockwise or counter-
clockwise, while pushing the arm lift down. (See Fig.
10.)
Clockwise rotation
— distance between the recrod and stylus tip Is
reduced.
Counterclockwise rotation
— distance between the record and stylus tip is in-
creased.
5~10mm
Note:
e As the adjusting screw has a hexagonal head, be sure
to make the adjustment while depressing the arm lift,
or the screw will not move freely. Also be sure that
the hexagonal head retracts correctly into the arm lift
when the latter is released.
Speed
adjustment
(with
pitch
control
knobs)
(See
Fig.
11.)
Strobe
dots
are
set
on
the
rim
of
the
turntable
platter
according
to
the
power-time
frequency
and
the
number
of
revolutions
of
the
records.
Make
adjustment,
refer-
ring
to
strobe
dot
indication.
(See
Fig.
11.)
1.
Place
a
record
on
the
turntable
mat.
2.
Set
the
speed
selector
to
the
speed
to
be
adjusted.
3.
Adjust
the
speed
while
playing
a
record.
The
strobe-illuminator/pilot
lamp
will
be
lit
for
illuminating
the
strobe
dots.
While
turning
the
pitch
contro!
knobs
either
to
One
side
or
‘‘—"’
side,
adjust
so
that
the
strobe
dots
of
the
turntable
platter
look
as
if
they
were
stationary.
The
state
under
which
the
strobe
dots
seem
to
be
station-
ary
represents
the
correct
number
of
revolutions.
45 rpm
33'/3 rpm
a= 45rpm
33'/3 rpm
Strobe dots
The
strobe
dots
for
60
Hz,
33'/srpm
seemtobe
Stationary.
Strobe-illuminator/pilot
lamp
Fig. 11
“+"" direction
This
increases
the
speed
of
the
turntable
rotation,
and
the
strobe
dot
pattern
seems
to
flow
in
the
same
direc-
tion
as
the
rotational
direction
of
the
turntable
platter.
“*_.""
direction
This
decreases
the
speed
of
the
turntable
rotation,
result-
ing
in
a
state
opposite
to
that
in
the
“+"
direction.
Note:
Strobe dot pattern
The
strobe-illuminator/pilot
lamp
of
this
unit
employes
the
commercially
available
power
source.
The
frequency
of
such
power
source,
when
actually
measured,
has
a
fluctuation
of
about
2%.
As
such
a
fluctuation
of
the
power
source
affects
the
strob-illuminator,
the
strobe
dot
pattern
also
seems
to
fluctuate
to
a
certain
extent.
But
the
unit
is
not
affected
by
these
fluctuations
of
the
power
source,
since
a
DC
motor
is
employed.
In
other
words
rotation
of
the
platter
will
be
constant,
and
slight
shifts
in
the
movement
of
the
dots
simply
reflect
normal
drift
in
the
power-source
frequency.
(6
Speed
adjustment
(with
VR3,
4
on
the
Motor
P.C.B.)
33
r.p.m.
45
r.p.m.
2m a
E —-©+-© + Bottom side
“+'" direction
This
increases
the
speed
of
the
turntable
rotation.
“_" direction
This
decreases
the
speed
of
the
turntable
rotation.
Adjustment
for
automatic
start
and
return
posi-
tions (See Fig. 12.)
Should
the
tonearm
out
function
correctly,
make
adjust-
ments
according
to
the
following
procedures.
Adjustment
for
automatic
start
position
(Remove
the
rubber
cap.)
In
cases
where
the
stylus
tip
descends
outside
of
the
record
—Rotate clockwise
In
cases
where
the
stylus
tip
descends
onto
halfway
of
a
recroded
piece
—Rotate counterclockwise.
%
nt
sc
remy)
ae
Adjustment
for
automatic
return
position
(Remove
turntable
mat.)
In
cases
where
the
tonearm
tends
to
return
before
the
playing
has
finished
— Rotate clockwise.
In
cases
where
the
tonearm
fails
to
return
after
the
last
groove
of
the
record
— Rotate counterclockwise.
4 aie eaeleaenls
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Technics SL-230 Specifications

General

Brand	Technics
Model	SL-230
Category	Turntable
Language	English