Dual 1216 User manual

Dual
Edition January 1972
Technical
data
Power supply
Power supply voltage
Drive
Power
consumption
Current drain
Turntable platter
Turntable speeds
Pitch
control variation
Dual
1216
Service
Manual
alternating, 50 or 60 cycle
changeable by changing motor pulley
110/117 and 220/240 V, switchable
4 -pole asynchronous pole
motor with radialelastic suspension
5
10 watts
64 ma approx. at 220V, 50 cycle
115 ma approx. at 117 V, 60 cycle
weighing 3.2 lbs. or 4 lbs., dia 10 5/8
inch.
33
1/3,45
and 78
r.p.m.
adjustment range of
approx. 1 semitone (6
%)
at all
three
turntable speeds
Speed accuracy
deviation < 0.12%
with
platter 4 lbs.
to DIN 45 500
< 0.15% with platter 3.2 lbs.
Rumble
35 dB below signal level
in accordance to DIN 45 500
Weighted
rumble 55
dB below signal levet
in accordance to DIN
45 500
Tonearm
torsionally rigid,
aluminium tubular tonearm with vertical needle bearings,
horizontal
2-layer precision ball bearings in hardened and polished races.
Maximum
tracking error
0.18
0 /cm
Tonearm
bearing frictions (referred to
stylus
tip)
vertical: less than 0.01 gram
horizontal: less than 0.04 gram
Cartridge holder removable, suitable
for,acceptance of cartridges having 1/2" mounting and
possessing a weight of 1
- 8 grams.
Weight aprox. 10.6 lbs. with platter 4 lbs.
aprox.
9.7 lbs. with platter 3.2 lbs.
Dimensions
and
mounting
cutouts
see instal
lation instructions
Dual Gebrüder
Steidinger • 7742
St.GeorgeniSchwarzwald
Download from www.dual.de
Not for commerical use

Fig. 1
Tonearm hookup
schematic
right channel
left channel
,
channel 1
channel 2
1 1
r-
._ i r
__ c .
white
>
--.1
---21
L----1
F ---f.''l
..
.-r---.
I
1 ----1 >. 1
red
L
----
1---< - I
r
>
'-----1
. .
L ----J.
I I
,J----I
L J L -J
i% I
I -I
1
„
1
1
1-- ______ __
--f : 1 :'
'---
Tonearm audio lead
I I
I 1
c
----- rti
(1
1
a) with miniature 5-pin plug
tonearm junction board
with muting switch
\
1 n
.L: 171 2
channel 1
red lead
contact plate at plug-in head
plug-in head with cartridge
green
mu-metal housing of cartridge
phonograph
record
inner side of groove
left channel
7- •
channel 1
red
Q 2
tonearm
circuit
1 r
r - r -1
channel 2
white
1
channel 2
white lead
b) with phono plug
red yellow
c) with banana
plugs
channel 1 = red
channel 2 =
yellow
common =
black
ground = green
plug-in
head
spring contacts
between
plug-in cartridge head
and tonearm
white
blue
outer side of groove
1
right channel
2

Co
ntents
"bre
Technical data
Tonearm hookup schematic
Motor
and drive
Pitch Control
Page
1
2
4
5
Turntable does not run when unit is plugged in
and "starr switch operated 5
Turntable does not come up to speed
5
Rumble in reproduction
5
Correct nominal speed obtained only at extreme settings of pitch control
5
Tonearm head is
not parallel to turntable platter
5
Tonearm and tonearm bearing
6
Antiskating adjustment
7
Stylus
skips
7
Tonearm sets down
beside tonearm rest
7
Horizontal pivot friction too high
7
Tonearm movements
8
Tonearm lift (Cue
control)
8
Tonearm
misses edge of record
9
Tonearm
strikes record
during change
cycle
9
Tonearm does not move onto record when drop cycle is started
9
Tonearm lowers too quick ly when drop cycle is started
9
Tonearm
returns to
rest immediately after
being
placed on
record
manually
9
Start cycle
9
Manual start
10
Stop switching
10
Muting
switch
11
Record drop
11
Shut-off and
change cycle
11
Shut-off
mechanism
12
Turntable stops after automatic setdown of the tonearm
12
Last record keeps repeating
12
Record does not drop when unit is switched to "Start"
13
Record drops when unit is switched to "stop"
13
Records do not drop
13
Switch latches into "stop" position when tonearm is at rest
14
Tonearm
moves with
stylus force and
anti-skating
force at
zero:
a)
outward, b) inward
14
During change, stop and start operations, noises
from the
mechanism can be
heard in
system
speaker
14
No sound
14
Motor will not shut off when tonearm is on arm rest
14
Acoustic feedback
14
Replacement
parts and
exploded view
15
- 20
Lubrication
21

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

Pitch Control
For turntable speeds 33 1/3,45 and 78 rpm,
the unit incorporates
a voltage-indenpendent pitch
control, wh ich permits a turntable
speed variation of up to
6%
(approximately one sem
itone).
When the pitch control knob (9) is turned, the switch segment
(112)
and the switch lever
(105)
attached to it
are moved
up or
down. This vertical
displacement changes the position of
the idler
wheel
on whatever step of the motor pulley it has been placed
on
(by the speed selector), and, due
to the tapered shape of the pul-
ley, effects approximately ± 3 % variation in speed.
Symptom
Causa
Fig. 5
Motor pulley Position
Remedy
Turntable does not
run when unit is
plugged in and start
switch operated
Turntable does not come up
to speed
Rumble in reproduction
Correct nominal speed obtained only
at extreme settings of pitch control
Symptom
Tonearm head is
not parallel to
turn-
table
platter
Cause
Orientation of
tonearm head on
tonearm tube has
altered
because
of jolting in
transport (shipping)
•
a)
Current path
to motor
interrupted
b)
Idler wheel (108)
not in
contact with
platter
c) Motor pulley
loose
a) Motor pulley
is not correct
for local
line frequency
b)
Slippage between
idler wheel
(108) and motor pulley (120)
or
platter
c)
Excessive friction
in motor,
drive wheel or platter
bearings
Worn
idler wheel
Idler wheel does
not contact
motor
pulley correctly
Remedy
Remove turntable platter
with the help of a
screwdriver
inserted through the
hole in the
chassis placed there
for
the purpose. Loosen screw on
tonearm
head.
After
cor-
recting
the
tonearm head,
tighten
screw.
(Fig. 6)
•
a) Check connection at switch plate and voltage selector
b) Check switch lever
assembly
(105)
c)
Tighten motor pulley
a)
Change motor pulley
b)
Clean friction
surfaces of
idler wheel, motor pulley
and
turntable platter. If necessary, replace drive wheel. Once
the drive surface of the platter has been cleaned, do not
touch it with your fingers
c)
Clean and oil bearings
Replace idler wheel (108) and clean platter drive surface and
motor
pulley with greaseless solvent. Once surface are cleaned
do not touch them with your fingers
Loosen setscrew
(122) and
by means of setscrew
(119) adjust
the motor pulley on the motor shaft so that when the fine
speed adjustment knob is in the center of its range, the idler
wheel is positioned in the center of the appropriate motor
pulley step. (Fig. 6). When adjustment is completed, tighten
setscrew
(122).
Fig. 6

Tonearm
and tonearm bearing
The
tonearm of the Dual 1216
is counterbalanced and
pivots
vertically and
horizontal ly on precision ball
bearings. This ap-
roach
gives highly favorable
tracking characteristics.
The tone -
arm head is
removable. To aid in replacing or
adjusting the
tonearm head, a hole is
provided in the turntable
base to faci-
litate
mounting the tonearm
head without first
removing the
tonearm.
Before setting the
correct stylus force for the
car-
tridge that has
been installed, the tonearm
should be balan-
ced with the stylus-force
setting at zero.
Fig. 7 Tonearm
bearing assembly
39
28
27
30
31
48
104
170
245 246
49
Fig. 8 Tonearm bearing assembly
(under view)
45
39
37
43
237
232
246
249
192 233 204
250
231
40
45
43
46
47
lt is
recommended that the balancing
should be done right next
to the
tonearm rest.
The counterweight is so designed
that is can balance cartridges with
weights from 1 to 8 grams.
For shock absorption . (the
absorption of short, rapid jolts) the counter-
weight is elastically mounted on the
tonearm and bracked to prevent
unintendet rotation. The
tonearm
head is
designed to accept all
car-
tridges
with
internationally standard 1/2 inch mounting centers and
with a weight not exeeding 1-8
grams. Stylus force is set ny turning
a calibrated spring housing (40),
thus tensioning or slackening the spiral
spring
lt contains. The scale is calibrated over a range of 0 to 5.5 grams,
allowing an exact setting of stylus within that range in 0.5 gram steps.
To replace
the tonearm with its
bearing assembly,
the following proce-
dure
is recommended:
1. Secure the
unit in the repair jig,
set the stylus force
to zero and lock
the
tonearm in place.
2. Turn the unit
tipside down and
unsolder the
tonearm leads.
3. Remove main
lever (204) and linking
lever (192).
4.
Connect the springs
and screw on the
shield.
5.
Unfasten the
c-washer and remove skating
lever.
6.
After loosening the
c-washer
(254) and friction washer
(253)
separate
shutoff
slide
(234)
four segment
7.
Loosen cylinder screw
(245/247) and remove
segment.
8. Hold
the main lever
bracket and unscrew the
hex nut ( 4 a
9.
Pull out the ball bearing
with balls (5 pieces)
10. Set the
unit on an upright
position and take
out the tonearm
together
with the
main lever bracket.
Screw
on
the hex nut until you feel
a swall resistance.
After
screwing lt on place, there
must be a noticeable play. After scre-
wing
on the cylinder screw, test the tonearm by setting
lt
over the
tonearm rest.
The tonearm is correctly set when the
tonearm can be lowered onto
the rest without
binding.
When reinstalling the protective cover (237), be sure that the segment
(246) can move without hindrance though the tonearm leads.
To remove the tonearm from its bearing frame, unsolder the tonearm
leads, then set the stylus-force adjustment to
zero. Unscrew locknut
(28)
with setscrew (27) and bearing screw
(45)
(iefthand
thread).
Carefully lift the tonearm free from the bearing frame.
6

gen.
Anti-skating adjustment
The tendency
of a tonearm
with an offset
(angled) head to
"skate"
inward
across the record
is eliminated
in the Dual
1216 by a preci-
sion anti-skating
mechanism.
Skating
force depends
on tonearm
geometry, stylus
force and the
tip
radius of the
stylus. The
inward pull on the
tonearm
caused
by the
skating effect
gives rise not
only to an
undesireable
jum-
ping of
the tonearm when lt
is.set down
on the record,
but also to
unequal forces on
the two
opposite groove
walls, with
correspon-
ding III
effects. This can be
corrected with
proper
anti-skating
adjustment.
By
turning the
anit-skating adjustment
knob
(50)
on the chassis,
an
asymmetrical curved
washer
(249) is
turned. This
washer has
two
different curved
surfaces
corresponding,
respectively ‚to
the
red and bleck
scales on the
anti-skating dial.
The
red
scale is
for
conical (spherical-tip)
styli;
the
bleck
for
elliptical
(bi
-radial) sty-
li.
When the
knob is
turned, the
curved surfaces
push the
anti-
skating lever
(231) away
from its
rest
position so that
is applies
a
suitable
counterforce via a
spring
(233).
Skating
compensation
is set at the
factory for
conical
styli with
a tip
radius of 0.6 to
0.7 mil (.0006 -
.0007 inch),
and
for ellipti-
cal styli - with
measurements of 0.20
to 0.23 mil
by 0.79 to
0.87
mil. The
hex adjusting
nut is
tightened and
sealed.
Readjustments
should be
attempted
only with
the help of
the Dual
Skate-0-meter
and test
record L
096. This work
is best
done by an
authorized
Dual
service agency.
Symptom
Fig. 9
Anti-skating
a)
Anti-skating in „0"
b) Anti-skating
mechanism in
„1.5"on the
scale for
conical styli.
Tonearrn on
rest position
c) See
„b", tonearm
onty over turntable
Causa
Remecty
Radius for
saniere
styli
Radius • r
elliptical styli
Anti-skating 1
Skating force
Anti-skating
mechanism
Stylus skips
Tonearm sets down beside tonearm
rest
Horizontal pivot friction too high
a)
Tonearm not balanced
a) Balance tonearm according to operating instructions
b) Stylus
force too low b) Set stylus force
to cartridge manufacturer's
recommen-
ded
value
c) Stylus
worn or chipped c) Replace stylus
d)
Excenssive
friction in d) Check tonearm horizontal
pivot. Should have barely
tonearm
bearing noticeable play. Adjust vertical bearing
only with the
left bearing screw (27) and the horizontal bearing with
nut. Horizontal bearing is correctly adjusted when the
tonearm, with
anti-skating 0.5 p,swings freely from
center to rest
e) Ball (235)
missing from shut-off
e) Replace
ball
(235)
raul
f) Anti-skating wrongly
adjusted f)
Correct antiskating
setting
Arm segment
(246) incörrectly ad-
justed
Tonearm
is set too
high on tone -
arm lift.
Main lever jams against
guide
pin of lift
screw
assembly
Correct
segment
positioning: after loosening screws
(245/
247) rotate
segment
(246).
Adjustment is correct when the
tonearm
descends to
the tonearm
rest
without binding.
Stylus
should be no farther from
record surface than 1/4".
Adjust by turning screw (211).

Fig.
10 Tonearm guide
mechanism
171 239 18
204
Tonearm lift (Cue control)
The tonearm lift permits the tonearm to be set down on the
record
safely at any desired point
except the shut-off area (near the record
label).
Pulling the
tonearm lift towards the front turns the
drive washer
(207). This
moves the connecting lever (192),
main lever (204) and
lift screw (229) to raise the tonearm.
After the tonearm is moved (by hand) to
the desired spot on the
record, the tonearm lift
handle is
lightly
tapped
towards the rear
Fig. 11 Tonearm lift (tonearm raised)
244
185
Tonearm
movements
A
guide groove
located on
the
underside of the
main
cam (197)
controls the automatic
lift and set-down of
183
the
tonearm as the cam
rotates trought
360
0
. Tonearm
lift and lowering are
controlled by the main
lever (204)
and
the lift screw
(229).
Horizontal
movements are con-
trolled
by the main lever (204)
and
the segment
(246).
Setting the
changer for
playback of 7", 10"
or 12" discs
is done
with the
indexing lever
(33). Setdown
points are
determined by the
eccentric
portion of the
arm position-
ing slide
(243) and the
indexing lever
(242).
192
Horizontal movement
of the tonearm
is limited by the
arm segment
striking the arm
positioning
slide
(243).
During
the change cycle, the
main lever (204)
raises the
234
arm
positioning slide,
bringing
lt
within
reach of the
spring
stud. On completion of
the change cycle
(set-
down
of the tonearm on
the record), the arm
position-
ing
slide (243) is
again released and
returns to its
nor-
mal
position. lt thus
moves out of
reach of the
spring
stud, permitting
the tonearm
to move
horizontally
without
hindrance,
while playing the
record.
243
181
143
215
197
to
release the mechanism. The connecting
lever (192) and the leaf
spring (186) of the main lever are freed, allowing
the tonearm to
fall. The rate of fall is controlled
by silicone grease on the drive
washer
(207).
The height of the stylus above the record can be
varied from zero
to about 1/4" by
adjusting setscrew (211).
Turning lt to the right increases the height, turning lt to the left
decreases the height.
35
210 208
192
215
211
246
219 229 204
8

Symptom
Cause
Remedy
4rEI
Tonearm misses edge of record
a) Set -down
incorrectly
adjusted
b)
Record not
standard size
c) Friction
surfaces of tonearm
clutch
dirty
Tonearm strikes record during
Tonearm height incorrectly set
change cycle
Tonearm does
not move onto re-
cord
when drop cycle is started
Tonearm lowers too quickly when
drop cycle is started
Damping
too great, drive
washer
dirty
Too I ittle
damping
Tonearm
returns to rest
immediately
Shut-off
mechanism has
shifted
after being
placed on
record
manually out of
position
during shipping
Start
cycle
Moving the start switch (32)
moves the
switch
lever
(181) towards the
main cam
(197),
initiating
the follo-
wing sequence.
a) The
set screw of the switch lever
assembly
(181)
turns the switch arm
(143)mounted on
the grooved
shaft (185). Via
a tension spring,
this
actuates the
rocker assembly
(105)
and engages the idler
(108)
between the platter
(7) and the motor
pulley (120)
At the same time, the power switch (141) is actu-
ated by the switch slide (138) through the switch
arm, and the
turntable
begins to
rotate.
b) The
switch lever (181) is
brought
within reach of the
cam
follower lever (236), so that
it is pushed into
the change
position after the
rotation
of the
main
cam.
a) Adjust set-dwon with a 12"
record so that stylus touches
record aproximately 1/16" inside edge of record. Adjust-
ment will be correct
for other sizes
b)
Use standard
records
C) Clean clutch surfaces
Adjust arm height with screw (30). Height is correct when
stylus tip is 1/16" to 1/8" above start switch (32) when arm
is removed from rest lowered
Loosen
nut (205)
and
washer (206) and
coat both sides evenly
with
silicone grease. Reassemble and wipe off
excess grease
Loosen
nut
(205)
and
washer
1206) and
drive washer
(207).
Clean
thoroughly. Coat both sides evenly with silicone grease,
re-assemble and wipe off excess
Before using changer
after moving, run lt through start
cycle
with tonearm locked on rest
Fig. 12 Start
position
215 197
176 182 192 208
210 244
143
191
185
183
181
147
146
242

Fig.
13 Stop
position
197 215
indlainimebo :i e .
7 ,7 1011
e, ,
,pi.s.,
. .
\ 4...--, • ••:•••‚• -----
-
- , G
. N.Zie- ,
‚-•••,...
: •;
N.,......
" . ..
192 176 182
181 208
Fig. 14
Muting
switch
210 244
Cam wheel at
zero:
Contacts
of muting switch
opened
Cam
wheel is turning:
Contacts of muting switch closed
Moving the operating
switch also releases the start lever
(183), pulling
it towards
the main cam
by
means of the
tension spring (182). This
causes coil spring to bring the
143
shut-off lever (222) within range of the
main cam dog.
Thus the shut-off lever drives the main cam.
To prevent malfunctioning, the operating switch is locked
during the start cycle (that is, while the main cam is
183
turning).
Just before the main cam reaches its neutral
Position (at the end of the
change cycle), the start lever
is pushed clear of
the main cam by the start pin of
the
main cam.
This restores the switch lever and operating
switch to their original positions.
After Instal lation and also after moving the changer, the
147
unit should be started with the tonearm
locked on the
rest. This will
automatically re-adjust the shut-off lever,
which may have shifted out of
position.
191
185
146
242
Manual start
When the tonearm
(16) is swung inward by hand,
the pawl on the
switch
arm drops into a support on
the base plate, holding the
switch arm in this position
and the idler wheel (108) in contact
with the
platter.The slide (138)1inked with the
switch arm actu-
ates the power switch and
sets the turntable platter rotating.
On
reaching the run-out groove, the tonearm
automatically re-
turns to its rest
position and the unit shuts itself off. (See shut-
off mechanism, next side). However, if the
tonearm is lifted off
the record manually and
returned to the rest, the tabs of the arm
segment (246) release the
pawl. The
torsion spring
(176)
then
returns the switch arm to its initial
position, opening the power
switch and
disengaging the idler wheel.
Stop switching
When the operating lever is moved to "stop", the starting lever
(183) is pushed forward. As a
result the shut-off linkage comes
into contact with the main cam. The
svvinging
lever
(236)
remains
in its stop
position.
10
When the tonearm is on its rest and the operating lever is pushed
to "stop", the
operating lever must not
(am.

4
Muting Switch
To prevent
the noises of the change cycle
from being sent
through the audio system, the
apparatus is fitted with a
short-circuiting (muting) switch
(239). The
switch
springs for
both channels are actuated
by the main cam (197). In
the
tonearm rest position, the muting
switch is opened.
Record drop
Insert
the appropriate
spindle - AW 3
for standard
records
(7 mm center
hole) or AS 12
for 45 rpm
records (38 mm
center hole).
Record-drops is initiated by
the rotation of
cam, whose
cam
surface guides
the cern rocker,
pushing the change
actuator
stud and releasing
a record by
means of the
automatic spindle. The
main cam is
designed so that a
record can
drop only when the
tonearm is
above the tone -
arm rest
and thus out of the
reach of the largest
possible
records (12" diameter).
Fig. 15
Record drop
Shut-off and change cycle
The dog (M) on the
turntable platter
gear (PR) and the
shut-off
lever
(222) actuate both the
change cycle at the
end of the record
as well as the shut-off
after the last record in a
stack is played.
o
4 - 3-4-roge
27-9
„- f -
%-1 ,7 4
et el i w i t
144 /
g
,
At
the end of a record,
the tonearm moves
towards the center at
an accelerated rate
due to the increased
pitch of the grooves.
This
motion carries the
shut-off lever (222)
towards the dog by means
of
the shut-off slide (234).
The eccentric
dog pushed the
shut-off
lever (232) back at each
revolution as long as the
tonearm ad-
vance is only one normal
record groove.
The
run-out groove with
its steeper pitch
moves the shut-off
lever against the dog
with greater
force, engaging the
shut-off
lever (222) and causing the
main cam (197)
tobe
driven out
of
its neutral position by
the turntable platter
gear.
174 197 171
183
181
191
239
Fig. 16
Actuating
"change" or
"shut-off"
nem
204
PR
M
197
223
234
222
244
243
143
215
234

Fig. 17 Change cycle
Shut-off
mechanism
174
177
178
197
Fig. 18
Fig.
19
171 191
236
Shut-off and
change functions are
determined by the position
of the cam follower lever
(236).
After
every start or record-
drop, the cam follower lever
is brought to its stop position by
the main lever (204)
(longer end towards the center
of the
main cam). As the
record is dropped
the cam follower
lever
(236) is turned to its
start position by the
cam rocker (171),
so that the tonearm
can swing in toward the
record and be
lowered on to it. If there
are no more records on the
spindle
and the cam rocker
cannot turn the cam
follower lever, the
lever
remains in its stop
position and allows the tonearm
to
swing
to its rest
position.
When the main cam (197)
returns to its neutral
position,
the switch arm
(143) drops into a cut-out in
the main
cam,
opening the power switch (141) and
disengaging the
drive idler
(108).
Symptom
Turntable
stops after
automatic
setdown
of
the tonearm
Cause
a)
Switch arm
(143) is
not latched
by pawl
(194)
b)
Power
switch opens
Remedy
a)
Loosen screw and
turn the
short arm piece
on the long
switcharm
piece.
Move the
tonearm in
and turn thä
main cam to
its neutral
Position and
adjust for
about
1/64"
play
between cam and
rectangular
bolts
riveted
into the chassis.
b)
As the tonearm
moves in,
switch
slide (138)
must
over-
travel by
about 1/64".
lts tab
must engage
the switch
(138).
Symptom
Last record
keeps repeating
Cause
Defective spindle
Remedy
Replace spindle
12

Eg.
20
Symptom
Record
does not drop when unit is switched to "start"
Cause
Inadequate engagement betvveen
change lever and cam
rocker
(171)
Remedy
Adjust clearance between change lever and cam
rocker to
1/64"
minimum with apparatus in "start" position.
Symptom
Record drops when unit is switched to "stop"
Cause
Cam rocker
(171) not caught by start lever
Remedy
Adjust cern rocker so that at the conclusion of the
"stop" function the start lever runs about
1/16"
under
the fol lower.
Symptom
Records do not drop
Cause
Cam rocker (171) has
too little force (travel)
Remedy
Re-adjust eccentric so that
when the three supports
in the automatic
spindle are held in and the main
cam is at its neutral , pressing
the change screw
moves the support
about
1/64".
Fig. 21
Fig. 22
13

Fig. 23
Symptom Causa
Remedy
Symptom
Switch
latches into
"stop"
position when
tonearm
is at
rest.
Causa
Too much
clearance between
tab on switch
arm
(143) and
start lever (183)
Remedy
Adjust tab on
switch arm
so that lt
clears
start lever
by
1/64"
when main cam
is in
neutral
position.
Tonearm moves with
stylus force
and
anti-skating force at zero:
a) outward;
b)
inward
During change, stop and start
operations, noises
from the me-
chanism can be heard in system
speaker
No
sound
a)
Anti-skating
out of
adjustment
b) Too-taut
tonearm
leads
produce a
twisting force
Muting
switch
misadjusted. Dis-
tance
between contact
springs and
shorting
contact is too
great
a) Adjust skating lever so that horizontal movement
of tonearm causes no movement of anti-skating
spring.
b) Allow some slack in tonearm leads
Bend contacts so that, in the neutral position of the main cam
the spacing between contacts is about
0.02 inch. Clean contacts
Spacing -too
small
See
above
Motor will not shut off when
tone- Capacitor across
power switch is
Replace
capacitor (0.1 µF, 700 VI
arm is on arm
rest shorted
Acoustic
feedback a)
Chassis parts
(for
example
leads) a)
Correct
cut-out according to
enstructions
supplied with
are
touching base
cut-out
unit. Move
cables
b)
Connecting cables are too
taut „ 15) . Allow
more slack in cables
14

Replacement
parts
Pos.No.
Part.No. Description
Quan-
tity
1 215 470
Automatic
spindle AS 12
1
2 213 895 Changing spindle AW 3
1
3
201
452 Facing ring 170 mm 0
1
4
214 054 Washer
1
5
200
543 Retaining ring
1
6
218
667 Turntable mat
complete, with
facing
ring
170 mm 0
1
7
218
662
Turntable complete,
with
turntable mat and
facing
ring 170
mm 0
1
218
666
Turntable cemp+4ei.,
wi-t..14—td+efete-15-1-e—me-t—a-Rel—f-a-e-irrg
rim
1?4-mm 0
1
Speed change lever, left 8
221
725
1
9
219
965 Speed
regulator knob, complete
1
10 225 101 Blind (cm)
1
225 102 Blind (inch)
1
11 225 075 Chassis complete
1
12 214 210 Shipping screw assembly
2
13 210
816
Machine screw M 4 x 4
4
14 220 213 Centering disc
1
15
200
709 Single play spindle
1
16
223 017
Tonearm complete
1
+...-17
223
001 Tonearm head, complete
1
18 223 005
Contact plate complete
1
19 201 132
Lift
1
20 210 182
Lockwasher
1
21
210
630 Washer 4.2 x 8.0 x 0.5 St
1
22 210 197 "C" clip G 4 x 0.8
1
23
223 011
Tonearm rest assembly
1
24 210 362 Hex nut
BM 3
2
25 210
366
Hex nut BM 4
8
26 210 362 Hex nut BM 3
2
-- 27
217
438
Threaded pin
1
28 200 829 Stop nut
1
29
215
430 Cartridge
mount TK 14,
complete
1
30
218
636
Set screw
1
31 207 839 Damping ring
1
32 221 726
Switch lever right
2
33 221
726
Switch
lever right
2
34
210 146 "C"
ring 3.2
5
35
216
881
Arm lift lever, complete
1
36
210 353 Hex nut BM 2
1
37 225 104 Weight, complete
1 . 23
1
38 221 511 Threaded pin
- f , cse•
1
39
223
003
Tonearm bearing, complete
1
40
217
273 Spring barrel, complete
1
41
221 510 Stop plate
1
42 210 487 Machine
screw M 3 x 10
1
43
225 105 Bearing support
1
44
216 504 Indicator
1
45
217
436
Bearing screw,
complete
1
46
200
567
Bearing race, complete
2
47
216 310 Bearing housing
1
48
200 567 Bearing race, complete
2
49
201 149 Set nut
1
50
221
926
Turn-knob
1
51
225 103 Dress -up plate, complete
1
52 213 260 Pin 2 x 6
4
53 217
905
Damping piece
1
54
214
047
Special screw (pierced)
2
214
211
Special
screw (threaded)
2
55 200 579 Spring
mounted
footing (1 set . 3
pleces)
1
56
200 721 Threaded piece
3
57
200
728
Compression spring
3
58 200 723 Rubber insert isolation
mount
3
59 200 722 Steel cup
3
60
210
816
Machine screw M 4 x 4
4
61
210 624 Washer
4.2/7.0/0.3 St
4
62
201
632 Rubber washer
2
63
200
713 Washer
2
64
200
712 Spring cup
2
210 366
Hex nut BM 4
4
65
210 624 Washer
4.2/7.0/0.3 St
4
66
200 718 Compression
spring
2
67
200 711
Lockwasher
2
15

Fig. 24 Exploded view,
parts above
chassis
0-
0
9 4
-°
r -
--- ----
9 C)
--®
o---e / z
16

Fig. 25 Exploded view,
Parts belovv chassis
"
z
17

Pos.No.
Part.No.
Description
Quan—
tity
101 217 376
Compression spring
1
102
217 026 Cam
wheel
1
103
210
146
"C" clip
3.2
5
104
225 075 Chassis
complete
1
105
217 234 Switch lever complete
1
106
210 146 "C" clip
3.2
5
107
200 110 Washer
1
108
217 888
Idler wheel complete
1
109
200
633 Lockwasher
1
110
217 027 Speed
regulator wheel
1
111
217 233 Speed regulator detent
1
112 217
028 Switching
segment
1
113
216
736
Compression spring
1
114
216
558
Support
complete
1
115 210 475
Machine screw AM 3
x 5
13
116
217 239
Groove
detent complete
1
117
210 642 Washer 4.2/7.0/0.3
1
118
210 361 Hex
nut M 3
2
119
217 751 Threaded pin M 2.6 x 8
1
120
220 970
Motor pulley 50
cycles
1
220 971 Motor pulley 60 cycles
1
121 210 509
Machine screw AM 3.5 x 8
2
122
210 220 Threaded
pin M 2.6 x
3.5
1
123 204 669
Dress —up plate
1
124 221 386
Isolation mount plate
1
125 215 846
Mounting bracket complete
1
126
221 385 Isolation
washer lower
1
127
209 939
Sleeving
1
128
217 727 Isolation sleeve
1
129 220 807
Washer 4.9/9/1.2 F
1
130 217
244 Idler arm complete
1
131 216
737 Compression
spring
1
132 210 475
Machine screw AM 3 x 5
13
133 218
629 Compression spring
1
134 209
358 Steel ball 4 mm 0
2
135
210 475
Machine screw AM 3 x 5
13
136 218 986
Roller for switch slide
1
137 214
181 Screw
bolt
1
138
213 970
Switch slide complete
1
139
217 062 Cover for power switch
with
voltage
selector
.... 1
214 207
Cover for power switch
lass
voltage
selector
.... 1
223 007
Cover for power switch with
voltage selector
and
SEMKO—capacitor
1
140
210 492
Machine screw AM 3 x 15
1
141
217 059
Power switch complete with
voltage selector
1
214
205 Power switch complete lass
voltage selector
1
222 997
Power switch
complete with voltage selector
and
SEMKO—capacitor
1
142
200 447
Cable clamp
1
143 217 889
Switch arm complete
1
144
210 145
"C" washer
2.3
9
145
218 583
Machine screw AM 3 x 4
2
146
216 777 Tension
spring
1
147 216 773
Switch—on lever
1
148
204 665
Shield
1
149 200
167 Bearing spacer
2
150
204 686 Motor
bearing top complete
1
151
217 591
Stator
110/220 V complete
1
220 196 Stator 150 V
complete
1
152 204 687
Rotor complete
1
153
204 685
Motor bearing lower complete
1
154 223 781
Screw bolt
1
155
217 060 Switch plate
complete with voltage selector
1
214
206
Switch plate complete
less voltage selector
1
223
006 Switch plate
complete with voltage
selector and '
SEMKO—capacitor
1
156
213
966
Snap spring
1
157
214 176
Screen spring
1
158
210 196
"C" clip G 3 x
0.6
1
159
213
968
Tension spring
1
160
214 174
Contact support
1
161
214 173 Speed spindle
1
162 203 725
Capacitor
1
221
186
SEMKO—capacitor
1
163
213
978
Locking device small
1
213 979
Locking device
large
1
18

Pos.No. Part.No.
Description
Quan—
tity
164
210 475 Machine screw AM 3 x 5
13
165
210 099 Plastic clamp for motor line
1
220 152 Plastic clamp for
power line
1
166
210
586
Washer 3.2/7.0/0.5 St
2
167 210 475 Machine screw AM
3 x 5
13
168
220 973 Motor 110/220 V complete
1
220 972 Motor 150 V complete
1
169
214
175
Contact spring
2
170 200 685
Hex
nut
1
171
213 922
[am
rocker complete
1
172 217
813
Shaft
1
173 210 145 "C"
washer 2.3
9
174
213 918 Change actuator complete
1
175
210 586 Washer
3.2/7.0/0.5 St
2
176
213 940 Torsion spring
1
177
213 920 Compression spring
1
178 213 921
Bushing
1
179
210 145 "C" washer 2.3
9
180 210 147 "C" washer 4
3
181 218 538 Switch lever complete
1
182 200 103 Tension spring
1
183
217
258
Start lever
1
184 210 147 "C" washer
4
3
185
217
334
Grooved shaft
1
186
201
186
Leaf spring
1
187
200 458 Spacer
1
188
210 480 Machine screw AM 3 x 6
1
189
210 145 "C" washer 2.3
9
190 200 554 Ball
bearing
1
191 214 201 Bearing support
complete
1
192
217 300 Connecting lever
1
193 213 925 Tension spring
1
194
213 942 Latch complete
1
195
202 043
Wacher
5.8/12.0/0.5 St
1
196 210 146
"C" washer 3.2
5
197
220
332
[am
wheel complete
1
198
200
519
Bearing post
1
199
210 366
Hex nut BM 4
8
200 200 528
Shaft
1
201 201
185 Bearing support
1
202
210 475
Machine screw AM 3 x 5
13
203
210 145 "C"
washer 2.3
9
204
201 094
Main layer complete
1
205
210 366
Hex nut BM 4
8
206
201 195
Cover washer
1
207 217
290 Drive washer complete
1
208
217
286
Support
bracket assembly
1
209
217
296
Torsion spring
1
210
221 527 Drive cam
1
211 220 167
Set
screw
1
212
210 187 Bowed lockwasher
1
213
210 147 "C" washer 4
3
214 210
469 Machine
screw AM 3 x 3
2
215 217
297 Bearing support complete
1
216
210 511 Machine screw AM 4 x 4
1
217
210 143 "C" washer 1.5
1
218
201 174 Compression spring
1
219 201
179 Conical spring
1
220
200 686
Spring pin
1
221
220
235
Stop nut
1
222
220
232 Shut—off
lever
complete
1
223
222 690 Friction plate
complete
1
224
210
145
"C" washer 2.3
9
225 200
650 Sleeve
1
226 200
522 Snap spring
1
227
211 614 Solder lug
1
228
210 475
Machine screw AM 3
x 5
13
229
223 952
Lift rod
complete
1
230 210
146
"C" washer
3.2
5
231
222 691 Skating
lever complete
1
232 217
948 Tension spring
1
233
218 591
Tension
spring
1
234 200 688
Shut—off
slide
1
235
209 358
Steel ball 4
mm 0
2
236
214
203
[am
follower
lever
complete with
sleeve
1
237 217
285
Cover plate
1
238
210 475
Machine screw AM 3 x 5
13
19

Pos.No. Part.No. Description
Quan-
tity
239 207 447 Muting switch complete
1
240 201 240 Motor shield
1
241 218 583 Machine screw M 3 x 4
2
242 217 264 Record size
selector left complete
1
243 217 276 Arm
positioning slide complete
1
244 200 453 Tension spring
1
245
210 482 Machine screw AM 3 x 6
1
246
225 228 Segment complete
1
247 210 480 Machine screw AM 3 x 6
1
248
216
867
Bowed lockwasher
1
249
220 899 Cam washer
1
250 210
361
Hex
nut M 3
2
251 221
260 Set screw
1
252 201 184 Set washer
1
253 201
187
Friction disc
1
254 210 145 "C" washer 2.3 9
255 217 617 Stand
1
217 759 Stand complete with phono
jacks
1
256
210 475 Machine screw AM 3 x 5
13
257
209 457 Inner casing for AMP-plug
1
258
209
436
Flat prong
socket
4
259 213 980 Input jack housing
1
260 213 984 Power cable, with U.S. type plug and 5 -pole
Dual plug
1
207
311
Power cable, with U.S. type plug and 4 -pole
Dual
plug
1
261 209 424 Miniatur plug for
audio cable
1
262
207 303 Audio cable complete
with miniatur plug
1
263
220 142 Power
cable complete with 5 -pole Dual plug
1
207 312 Power cable complete with 4 -pole AMP-plug
'
1
264
209 426
Phono
plug, red
2
265
209 425 Phono plug, yellow
2
266
207 299 Audio cable
complete with phono plugs
1
**
201 229 Cover pin
1
**
214
120 Mounting
hardware
1
**
211 473
Stroboscope disc 50/60 Hz
1
**
214 219 Packing carton complete
1
**
223
669 Operating instructions, 4 languages
**
225
034
Operating instructions, UAP
**
225 035 Operating instructions, english
**
223
668
Mounting instructions
**
214 048
Mounting
gauge for pick -up system
Alteration reserved
**
Not
ilustrtgled
(4 e
i
c
(30-09
t
e4-‘‘. 1 1- t-• 1
20