Dual 1216 - Motor and Drive

Fig. 2 Motor suspension and turntable drive
102 9 8 113
110 114 105
130
143 108
168
120
Motor and drive
The
turntable platter and
change mechanism
are driven by a vi-
bration-free four-pole
motor (168)
with
an
extremely low stray
magnetic field.
Motor speed is
constant for
line-voltage variations
of ± 10%. lt is
dependent on (and proportional to)
line frequency. Two
interchan-
geable motor
pulleys (120) are
available
for adapting
the changer
to 50 or 60
Hz Operation:
Motor pulley
for 50 Hz Operation:
Part no. 220 970
Motor pulley for
60 Hz Operation:
part no. 220
971
The
motor pulley is secured
to the motor shaft by a
setscrew.
When a
pulley is replaced or
exchanged, it must be set at the
co-
rect height
(see Fig. 5).
Fig. 3
Motor field
connections
(lass
voltage
selector)
104
The turntable platter is driven by the idler wheel (108) which is
automatically
disengaged from the motor pul ley when the unit is
shut off, in order to protect its driving surface.
Turntable speeds of 33 1/3,45 and 78 rpm
are selected by raising
or lowering the idler wheel (108) to the appropriate
step on the
motor pulley.
When the
selector lever
(8) is
moved, the selector
segment
(112)
rotates. This causes the lever (105) fitted in the slot of the selec-
tor
segment to move in a
vertical direction. \ rhe idler wheel
(108)
mounted
on the swinging arm (130) is lifted off
the
motor pulley
and set
down again on the motor pulley step for the adjacent
speed.
Fig. 4
Motor field connections
(with voltage selector)
1
2
0
—
220/240V I
—J
4