Dual 1211 Service Manual

Fig. 10
Tonearm guide
mechanism
214 155
Tonearm
movements
51
A
guide groove
located on
the
underside of
the main
cam (242)
controls
the automatic
lift and
set-down
of the
tonearm as
the
cam rotates trought
360 0 . Tonearm
Tonearm lift
(Cue control)
The tonearm
lift permits the tonearm
set down an the record
safely at any
point except the shut-off area (neer
record
label).
218
to be
desired
the
Pulling the tonearm lift towards the
front
turns the drive washer
(261). This moves the
connecting lever
(272),
main lever
(218) and
lift screw (250) to reise the
tonearm.
After the tonearm is moved (by hand) to the
desired spot
an the record, the
tonearm
lift
handle is lightly tapped towards the rear
to
Fig. 11 Tonearm lift
(tonearm raised)
268
227
226
lift and lowering are
controlled
by the main layer (218) and the
lift screw (250). Horizontal move-
ments are controlled by
the main
lever (218) and
the segment (276).
Setting the changer Vor
playback
269
of 7",
10"
or 12"
discs
is
done
with the indexing lever (24).
Setdown points are
determined by
the
eccentric portion of the arm
positioning slide (269)
and the
indexing lauer (267).
224
221
271
242
Horizontal
movement of the
tone -
272
arm is
limited by the
arm segment
striking
the arm positioning
slide
(269). During
the change cycle, the
278
main lever (218)
raises the arm po-
sitioning slide, bringing it
wit-
hin reach of the spring
stud. On
completion of
the change cycle (set-
down of the
tonearm an the record),
the arm
positioning slide
(269) is
again
released and
returns to its
normal position.
lt thus moves
out
of reach of the spring
stud, per-
mitting the
tonearm to move hori-
zontally without
hindrance,while play-
ing
the record.
release the mechanism. The connecting lever
(272) and the leaf spring (215) of the main
lever (193) are freed, allowing
the tonearm
to fall. The rate of fall is controlled by
silicone
grease an the drive washer (261).
The height of the
stylus
above the
record
can
be varied fron zero to about 1/4" by
adjusting setscrew
(231).
Turning it to the
right increases the height,
turning it to the
left decreases the height.
64
8
265
230
272
271
231
249
250 276

Dual 1211 Specifications

General

Weight	6.5 kg
Speeds	33, 45 RPM
Platter	Aluminum
Wow and Flutter	<0.15%
Drive Type	Idler Wheel Drive