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7,
ADJUSTMENTS
7
.1 MOTOR ADJUSTMENTS
Place
the record player on
blocks as shown in
Fig.
7
-7
and adjust
the motor from
the
under
base.
1.
Turn the
arm elevation lever
up to
raise
the arm.
2. Place
a strobo sheet on the turntable, move the
arm
to
the turntable
side, and rotate the turn-
table.
3.
Adjust semifixed
resistors
VR1 and VR2
of
the
motor
assembly so
the 33-U3 rpm
and 45 rpm
strobo of the strobo
sheet appears
to the
static.
4.
First adjust VR1 for
45
rpm
and
then the adjust
VR2 for 33-1/3 rpm.
7.2 STYLUS LANDING
POSITION
AD.JUSTMENT
When
the
tonearm doesn't land
in
the
correct
position during automatic
playback, adjust accord-
ing
to the following
procedure.
1. Place a 30cm
record on the platter.
2. Press
the
START/STOP switch and start auto-
matic playback. Note the landing position of the
stylus. (How many mm
to the
inside
or
outside
compared
to
the proper landing position on
the
platter.)
3. Depress
the
START/STOP switch
to
return the
tonearm to the tonearm
rest.
4.
Press
the arm elevation switch to
raise
the stylus.
5.
With the adjustment
hole visible, move
the tone-
arm
to the
edge
of the record by
hand.
6.
Turn the
adjustment screw
with
a small
screw-
driver according
to
step 2
as
follows:
o
When
the stylus
lands
at the
outside
of
the
record, turn the adjustment
screw
clockwise.
o
When
the stylus
lands
on the proper position
toward the record
center,
turn the
adjustment
screw
counterclockwise. One half
turn of
the
adjustment screws moves
the
tonearm about
12mm.
7.
After
adjustment, press
the
START/STOP
switch and check
if
the
stylus landing
point
was
correctly adjusted.
If
adjustment
is
incorrect, repeat
steps 3
to
6.
Be careful
not
to
damage
the
record and
stylus
when making
this adjustment.
ADJUSTMENT USING
A
TEST
RECORD
(Landing
position
adjustment cannot
be
done
when
the tonearm
is
on the record.)
30cm landing
point
17cm landing
point
Lands between
count
306 and 313.
Lands between
count
175 and
184.
Fig.
7-1
Motor
adjustment
Small
Phillips
screwdriver
Tonearm
lands
toward
inside
of
record
Tonearm
lands
toward
outside
of
record
33-ll3rPm
Blade screwdriver
Fis.
I
.z
Stylus
landing
point
adjustment
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