Technics SL-DL1 - Tonearm Sensitivity Adjustment; Servo Gain and Offset Adjustment

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@ Turn the power switch “on” and move the
tonearm towards the center of disc by pres-
sing the start button.
@ Press the cueing button and make sure that
the arm is lowered.
@) Connect the DC VTVM to the connector
pin. (See Fig. C, D)
@ Read the voltage values with the tonearm
fully shifted to the right and left respectively.
(See Fig. E, F)
®) Calculate the center voltage from the differ-
ence between the two voltage values.
For example, when the voltage is 1.5V in DC VTVM
Fig. E and 0.02V in Fig. F then VR301 VR302
(1.8V
=
0.02)
4
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a
76v
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2 ; :
(middle point voltage)
®© Set the tonearm to the center
Position, and turn the adjusting
screw of the arm base by a hax-
agon wrench until the center
voltage is achieved. (See Fig. G)
3 Adjustment of
tonearm sensitivity
7
| @ Put a recrod on the turntable.
@ Open the dustcover 1 or 2 cm, turn the
power.switch “on” and lower the tonearm.
(In this case, do not allow the stylus to
DC VTVM
VR301 VR302
touch the disc.)
@) Connect the DC VTVM _ to the connector 'D '
pin. (See Fig. H)
@ Make sure that VR301 has been completely
turned clockwise.
© Turn VR302 until the DC VTVM indicates
0.72V: (Servo gain adjustment)
© Put a 1 mm-pitch record on the turntable,
close the dust cover, and play the record.
@ Turn VR301 until the DC VTVM indicates
0.6V. (Offset adjustment)
Servo gain and
4 offset adjust-
ment