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| SR—-F770
SR—F770 |
TRACKING
FORCE
ADJUSTMENT
AUTO-START
POSITION
ADJUSTMENT
(Note: this adjustment is important)
The distance between styius tip and record surface when
the cue lever is in the "'UP"' position, is adjusted by means
of the height adjustment screw on the tonearm
pivot (this
task will require a small screw driver).
Reference
line
®
Turning in the clockwise direction will lower the stylus.
@
Turning in the counter clockwise direction will raise the
stylus.
Anti-skating mechanism
Figure
6,
F e4) Tapping Screws (WRUD)
If the turntable has already been connected to an amplifier,
3.196 x 16 mm
be sure to switch the amplifier's power supply off before
ap
commencing this adjustment.
eS
Figure
3.
Figure 8.
(1)
First remove the stylus cover.
(2)
Check that the cue lever is in the "DOWN" position,
STYLUS
HEIGHT
ADJUSTMENT
and that the tonearm itself is free to move from the
® When
stylus lands too close to the outer edge of the
arm rest.
seaaiel
4. ADJUSTMENTS
(3)
Set the anti-skating mechanism to read "0".
Turn
the
auto-start
adjustment
screw
in the counter
|
(4)
Now
carefully screw the counter weight out back-
clockwise direction.
ADJUSTMENT OF SEMI-FIXED RESISTOR
(VR33 and VR45)
wards until the tonearm
is perfectiy balanced in a
® When stylus lands inside the first track
Turn
the
auto-start
adjustment
screw
in the counter
clockwise direction.
horizontal
plane.
Then
keeping the counter weight
still, turn the tracking force
scale only to align the
"O"'' with the reference line.
(5)
Next
turn
the
counter
weight
together
with
the
tracking force scale so that the scale reading corres-
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ADJUSTMENT OF OSCILLATOR COIL (L01)
(7)
Also adjust the anti-skating
mechanism
to the same
value as the tracking force.
Adjust the platter's
rotational
speeds to exactly
33 and
45
rpm
by means
of the
speed
control
Knob
and the
stroboscope.
When
the
relevant
stresoscone
mar icings
sdidetncae ccaw
Figure 9.
appear
to
be stationary,
the platter will
be rotating
at
the correct speed.
The speed may be increased by turning
the
speed
control
knob
in the
F
(faster)
direction,
and
decreased
by
turning
in the
S (slower)
direction.
AUTO-RETURN
POSITION
ADJUSTMENT
®
When
the tonearm
returns to the arm
rest before the
end of the record
Se
Turn
the auto
return
adjustment
screw
in the counter
eG
clockwise direction.
@
When
the tonearm
fails to return to the arm rest after
LATTER
SPEED ADJUSTMENT
ed
Atito
return
ry
9
Net
et
OE
adjustment screw
Figure 4.
OVERHANG
ADJUSTMENT
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