Dual 504 User manual

Dual
Edition August 1978
504
Service
Manual
Dual
Gebrüder
Steidinger
7742
St.Georgen/Schwarzwald
Download from www.dual.de
Not for commerical use

Fig. 1
TA-Anschlußschema / Audio Connection
Diagram
/ Schema de
branchement /
Esquema de
conexion
del fono captor
a)
mit DIN-Stecker
5-polig / with DIN-plug 5 pin
avec ficne DIN 5 pöles
!con
enchufe DIN de 5
poles
rechter Kanal
right channel
canal
droit
canal
derecho
rot
/ red /
rouge
/ rojo
linker
Kanal
left
channel
canal gauche
canal
izquierdo
weiß! white /
blanc /
blanc
b) mit Cynchstecker / with phono plug
avec fiche cynch / con enchufe Cynch
rechter Kanal / right channel
Canal droit /
Canal derecho
rot (schwarz) / red
(black)
rouge
(noir)
!rojo
(negro)
\ Tonabnehmerkabel
Tonearm
audio cable
Ca ble
de
BF
Cable del
fonocaptor
WI 3
I
\ I
I
I
I
I I
Masse
draht / Mass lead
Mass cable
/ Masa cable
Masse
rechter
Kanal - 1
Mass
right channel
Masse
canal droit
masa canal derecho
I
rechter
Kanal
right channel
canal
droit
r
1
canal
derecho
rot /
red / rouge
/ rojo
Masse rechter
Kanal 1
Mass
right
channel 1
Masse
canal
droit
masa
canal derecho
grün
/ green
/ vert /
verde
r 1
I I
/7/
J
_ _
_ _ _
r
linker Kanal
J L
1 left
channel
1 canal
gauche
canal izquierdo
-I-weiß /
white / blanc / blanco
1
I
Masse linker
Kanal
1
Mass left
channel
Masse
canal
gauche
masa
canal
izquierdo
1 blau
/ blue /
bleu /
azul
Masse schwarz
Mass black
Masse noir
Mass
negro
/ •
7/
I
I I
I
I
Masseblech
Mass sheet
Prise de
masse
chapa
de
masa
Kontaktplatte
Contact plate
Plaque de
contacts
Placa de
contacto
I
1
--linker
Kanal / left
channel
I 1
Canal
droit /
Canal
izquierdo
I gelb (weiß) / yellow
(white)
jaune (blanc) /
amarillo
(blanco)
Cynch-Tonabnehmerkabel
Pick
-up lead
with
Cynch plug
Ca ble
de BF avec fiche Cynch
Cable del fonocaptor con
enchufe Cynch
I ---
Masse linker Kanal
Mass
left
channel
Masse
canal gauche
masa canal
izquierdo
1
LJ
'7/7/ 7/
r -
1'7
rl
1 I I i 1
i
I 1 i
1 i
1
I I
I i 1
1
1
I
1
,
1
I
1
1 1
I I
I
I I
I 1
I
11
1 I
1
1
Kurzschließer
Muting switch
Court-circuiteur
Dispositivo
cortocircuitador
/
I I
I I I
7
Tonarmkopf
Tonearm
head
•
Töte
magn6tique
Cabezal
fonocaptor
2

Contents
Page
2
Audio connection
diagram
3
Specification
4
Motor
and drive
4
Speed
selection
4
Turntable
4
Belt
4
To replace the motor pulley
4
Tuning to the Pitch of Tone Level
5
Tone arm with
bearings
5
To
remove the tone arm from bearing frame
5
To remove tone arm
complete with bearings
6
To
replace the spring
case
6
To adjust the tone arm bearings
6
Tone arm
lift
6
To adjust the
tone arm liftheight
6
Anti-skating
device
7
To replace
the lift plate
7
Starting
and shutting-off
7
Adjustments
7
Segment
7
Pawl
8
Power switch
8
Troubleshooting
8
Tone arm head not parallel
to turntable
8
Turntable does
not start
8
Turntable
speed unsatisfactory
8
Stylus slips from
record groove
8
Tone
arm improperly lowered
8
Acoustic feedback
8
List of spare parts (instructions)
9 Exploded view
10
Spare parts
12
Lubrication
Specification
Mains
frequency
50 or 60
Hz, use proper motor pulley
Mains voltage
110— 130
Vor
220 — 240 V, pluggable
Drive motor
Dual model 8 -pole
synchronous
Drive
by
motor-to-turntable belt
Power consumption
less
than 10 watts
Current drain
75 mA at 220
V/50 Hz, 140 mA at
110 V/60
Hz
Turntable
non-magnetic, dia. 304 mm, weight 1.3 kg
Record speeds
33 1/3
and 45 revolutions
per minute
(rpm)
Wow and flutter
less
than <-± 0.09 % by test standard
Signal/noise
ratio
intrinsic
min.
> 62 dB
external
min. > 41 dB
Tone arm
tubular anti-torsion type with universal four-point gimbal suspension
Tone arm bearing friction
vertical less
than
< 0.1 mN
(0.01 g)
related to stylus point
horizontal
less than < 0.4
mN
(0.04 g)
Pick -up head
detachable, accepts all Dual snap-in cartridges and all other systems 1/2"
weighing
5.5 to 10
g,
mounting
material included
Tracking force
continuously adjustable in the range 0 —30 mN 10- 3 g), calibration to 1 mN
provided for lower half of this range. Reliable Operation with 5 mN and higher
Weight
4 1 kg
For dimensions and
bench cutout refer to
Installation Instructions.

Fig. 2
103 18
Fig. 3
Motor and Drive
Turntable and mechanism are driven
by the motor (132) in
(Fig. 16).
The shaded-pole motor runs
vibration-free in radially
elastic mounts and has an
extremely low magnetic leakage.
The motor speed is independent of
voltage, temperature, and
load variations. lt can only fluctuate with the
mains frequency.
Two motor pulleys adapt to the mains frequency of 50 Hz or
60 Hz (see pulley (116) in Fig. 2). :
Part
no. 234 453 pulley for 50 Hz
Part no. 234 454 pulley for 60
Hz.
The driving force is transmitted to the turntable by the bell
(15)
(Fig. 3).
Speed Selection
To adjust
the turntable
speed to 33 1/3
or 45 rpm, the
bell is
adjusted to
the one or the
other step of the
motor pulley (116)
Nee Fig.
3).This is done
by operating the
knob (16)that
will shift
the
change-over lever into the
desired speed
Position through the
lever
(101) and the spring
lever. As long as
the platter is turned
off, the
change-over lever is
blocked by the bar (12)
and the
speed
is only
pre-selected. As soon as the
record player is
turned
on and
the turntable (7)
starts running, the
blocking bar (12)
will
release the
change-over lever. The
latter will then
shift the bell
(15)
to the one step of
the motor pulley
(116) that
corresponds
to the
desired speed.
Turntable
The
turntable (7) is fixed
to the turntable
bearing tube by
lock
tab
(134). To
remove the
turntable, I ift its
top layer
through one
of the cutouts
and rotate the
turntable so that
the recess is
above
the motor
pulley. Pull the
bell (15) from
the pulley (116)
and
place it onto the
turntable. Rotate
the latter
further until the
cutout is
above the lock tab
(134). Slacken the
screw (133). Press
the holding bar
(134) outwards and
remove the turntable
(7).
Belt
To replace the belt, first
remove the turntable
asabovedescribed,
then
remove the bell (15).
Place the new belt on the
pulley part
of
turntable (7).
NOTE: the ground
(mat) side of the bell
should face the pulley.
Install the
turntable. Place the bell onto the
motor pulley (116).
Fig. 4
To Replace the Motor
Pulley
1. Remove bell 15 from
pulley (116) and remove the
turntable.
Remove
the toothed
bell
(109).
2.
Disengage
the
tension
spring
(114) from the shield
(122).
3. Unscrew
the hex. nut 1110). Remove the set cam (1111, belt
pulley (112), and counter bearing
(113).
4. Slacken the
grub screws
(1171
and
slide off
the motor pulley
(116). Place the replacement pulley onto
motor
shaft. Remove
the taper
sleeve. Pay attention to the internal distance
spring.
Position the motor pulley at
proper height above the mount-
ing plane — see Fig. 3 — and uniformly tighten thegrub screws
11171. Place the taper sleeve
into the motor pulley
11161.
5. Mount the
counter bearing 1113), the bell pulley 2 11121,
and the setting cam (111),
tighten with hex. nut 11101. Re-
place tension spring (114) and toothed bell (1091. Mount the
turntable (71. Place bell (15) onto motor pulley
(116).
6. To adjust the rated speed: adjust the knob (11) to its mid
position. Slacken
or tighten the hex. nut (110) to achieve the
rated
speed.
Tuning to the Pitch of
Tone Level
%•d
This
tuning feature is
independent of the power and
controls
both turntable
speeds. For 33 1/3, the control
range is max. 6 %
or about 1 seminote.
Rotate the knob (16) to
move the bell pulley
(1121. This
rotary \IV
4

4.„
motion is transmitted by the toothed beit (109) to the belt
pulley 1 (105), see Fig. 2. As a resu lt, the counter bearing (113)
and the taper sleeve of the
motor pulley (116) are
shifted up or
down. As an effect of the taper sleeve, the motor pulley dia-
meter is reduced or increased, respectively,
thus permitting to
change the rated speed within the range of ± 3 %.
Tone arm with Bearings
The I
ight-weight torsion-resistant metal-tube tone
arm has a uni-
versal gimbal bearing characterized
by four hardened and lapped
steel points
located in high-precision ball
bearings. The tone arm
bearing friction is thus
reduced to a minimum, namely
less than 0.1 mN
or 0.01 gr in vertical and
less than 0.4 mN or 0.04 gr in horizontal
direction
referred to the stylus point.
This
ensures particularly satisfactory
tracking conditions. Before
adjusting the tracking force
in compliance with the pickup
system used, the tone arm to its
balanced position while the
tracking-force scale is in the zero position. For coarse
balancing,
shift the weight with
mandrel (51), for fine balancing, rotate
the
weight. This balancing weight
will permit balancing of pickup
systems that
have a weight (including
mounting parts) in the
range from 5.5 to 10 g.
The tracking force is
produced by tensioning the
helical spring
located in the spring case (64). The
latter has a scale with marking
points permitting exact adjustment of the
tracking force within
the range 0 -30
mN (or 0 - 3 gl.
To Remove the Tone arm from its Bearing Frame
1. Mount the record player in the servicing fixture. Remove the
weight (51) and the tensioning screw (58). Adjust the treck ing
force scale to zero, see
(64) in Fig. 6.
2. Turn the record player into head position. Remove the shield
1158).
Unsolder the tone arm leads from the terminal strip
(156).
3. Record player in
normal position. Screw the two mounting
screws (60)
counterclockwise until they abutt against the
bearing
frame
(55).
NOTE: Bayonet
union. Shift the tone arm
(50) to the rear and
I
ift
it from
the bearing
frame 155).
To assemble,
proceed in reverse
sequence.
To
Remove the Tone arm Complete with Bearings
1. Mount the record player in the servicing
fixture. Adjust the
tracking-force
scale (64) to zero.
Lock the
tone arm
(50) in
place. Remove
the weight
(51).
2. Adjust record
player in head position. Remove shield
(158).
Unsolder
the tone arm leads from terminal
strip (156).
3.
Unhook the tension spring (226) from
the bearing bracket
(224).
Rotate
bearing part
1195)
through
90° degrees and
remove it. Detach
the setting bar
(194).
4.
Unhook the tension
spring 1214). Remove lock
washer (210)
and skating
lever
(207).
5. Remove lock
washer (217) and disk
(216). Detach the shut-
off
bar
(215) from the
segment
(2111.
6. Slacken
the hex. nuts (213).
Remove the
segment (211).
7.
Remove hex.
nut
(206) and then the tone arm
complete
with
bearing.
To install
the tone arm, proceed
in reverse sequence;
however,
make sure the segment
(2111 is properly
adjusted as described on
page 7.
erp.e
IM
-
OK efeen,
-
MW
Fig. 6
47
46
63
42
Fig. 7
43
44
64
66
67
211
213
66
58
51
207
213
211
194
215
NOTE: The item
numbers referred
to in the text are
identical
with those in the
illustrations, the
exploded views, and
in the
parts
lists.
5

To Replace the Spring
Case
Remove tone arm
(50) from
bearing frame
(55) as above des-
cribed. Slacken the lock nut (47) and the grub screw (46). Un-
screw the bearing
screw
(66).
Lift the bearing
frame (55). Remove washer
(65) and spring case
(64). When reassembling, make sure the helical spring snaps into
the recess of bearing (63). Slide-in the washer (65). Tighten the
screw (66). Mount the tone arm. Adjust the bearing backlash
with grub screw 1461 and lock
nut
(47) as
below
described.
To
Adjust the
Tone arm
Bearings
Exactly
balance the
tone arm.
Both
bearings
should have a
small ,
just
perceptible
backlash.
Proper
adjustment of
the
horizontal
bearing is
achieved if
the tone
arm can
freely
slide from
the re-
cord
inside to
outside
while the
anti-skating
adjustment is 0.5.
Proper
adjustment of the
vertical
bearing is
achieved
when the
the
carefully kicked
tone arm
swings into
balanced
position.
Adjust the
backlash by grub screws 1441,
(46)
for
the
horizontal
and vertical
bearing, respectively.
Tone Arm Lift
Move
the lift control bar
(219) to
the front (
V1
or
LIFT posi-
tion; this will
rotate the lift
cam (223) and
operate the
setting
bar 1194) and
the
lifting bolt that will lift
the
tone arm.
In this
way
the tone arm
can be lifted
from or
lovvered on any
point of
the record except in
the shut-off range.
Move
the bar
(219) to the rear
(I)
or LOWER
position; this will
release the setting bar
(176).
The
pressure spring
(184) will
Fig. 8
45 U/min 50 Hz
45
U/min 60 Hz
33 U/min 50 Hz
33 U/min 60 Hz
RR
111111 1 ZZ
II
OOOOOOOOOOOOO
RR
II
RIESZ
'to
• .•'• -mR
F
Anti-Skating Device
To adjust the anti-skating force, operate the
pointer scale provi-
ded on the cover (67). Depending on this
adjustment, the non-
symmetric
cam disk will guide the skating lever (207) out of the
tone
arm pivot point. The anti-skating force is transferred by the
tension spring (214) to the segment 12111 and, hence,
to the
tone arm
(50).
The factory adjustment is
optimal for any stylus having a spheri-
cal tip rad ius of 15 prn or
an elliptical tip rad ius 5/6 by
18/22/1rn
as well as for CD 4 pickup systems.
These factory-adjusted vylues may be varied only
in an authori-
zed Dual service
workshop using a Dual Skate -0 -Meter and a test
record.
Fig. 9
return the lifting bolt
(1851 to its operating position and the
tone arm (50) will be loweredsoftly, braked by the silicone oh l in
the lifter tube.
To Adjust
the Lift Height
Slightly
rotate the adjusting sleeve (181).
The stylus should be
lifted from the record by
5 to 7 mm.
i nzi s
mi sma
•
at z
man nall o
u
i
zzawmarnemozza•• mem
111111111
1 II 111
tenzernmaszernmealffll
OOOOO II II3111M1111
31
219
223
6
193 195
194 181
185
51

Fig. 10
To Replace the Lift Plate
1. Fasten the record
player in the service jig and lock lt in place.
2. Adjust record player to
head position.
3. Detach the tension spring (226) from the bearing brocket.
(224). Rotate bearing
part (195)
through 90 0 degrees and re-
move it. Remove the setting
bar (194).
4. Detach the tension spring (214), slacken the lock washer
(217) and remove the skating
lever (207).
5. Remove lock washer (217) and disk (216). Detach shut-off
bar
(215) from segment
(211).
6.
Slacken hex.
nuts (213) and remove
segment
(211).
7.
Remove lock washer (188) and disk
(187), disengage pawl
(186).
8. Remove screw (183). Hold the tone arm bearings. Unscrew
the hex.
nut (206) and remove
I ift
plate
assy.
(182).
9. Lock tone arm against dropping
out with the aid of nut (206).
To replace the I ift
plate (182), proceed in reversed sequence, but
look for
proper Adjustments (described below) when you fix
the
segment
(211).
Starting and
Shutting Off
Swinging-in of the tone arm (50)
causes rotation of segment
(211).
As
a result, pawl (164) and shift arm (172) will operate the
power switch (143) causing the motor (123)
and turntable (7) to
rotate.
After the record has been played, the
dog (M) of the turntable
(Fig.
11 b)
will operate
the shut-off
lever (34).
During
play-back,
the shut-off bar (215) is dragged in proportion to the motion of
segment (211). For records 116 to 122 mm in diameter, the
shut-off lever (34) is gradually pushed to dog (M) by the shut-off
bar (215) in the shut-off range, see Fig. 11
a. When the
dog
(M)
contacts the shut-off lever (A), the carrier (37)
will move the
shift arm (172) to its zero position and the power switch will
interrupt the supply.
At the same time the lift bar (218) coupled to the shift arm
(172) will operate the tone arm lift and the tone arm (50) will be
I ifted.
Adjustments
1. Segment
a)
Lock the tone arm (50) in
place. Record player in head
posi-
tion.
The central hole (L) of
segment (211)
should be cente-
red over
the frame axis
(45). Moreover, a
play of 0.3 zo
0.5 mm should
be provided
between the pawl
(186) and the
stop (A) of
segment
(211), adjustable by
slackening the hex.
nuts (213)
and shifting the
segment
(211).
b) The
excenter (S) on
segment (211) can
be used to vary
the
shut-off
point for records
116 to 122 mm
in diameter
(see
(Fig. 12).
2.
Pawl
Swing
-in the tone arm
(50). Make
sure there is a play
of 0.2
to
0.5 mm
between stop
pin
(B) of the
shift arm (172) and
the
deck plate (22). lt
necessary, adjust
by rotation of ex-
center
(E).
Fig. 11
Fig. 12
7

Fig.
13
ca.3mm
Fig. 14
Defect
Turntable does not start
Turntable
speed unsatis-
factory
Stylus slides out of
playing groove
Tonearm does not set
down on record or lowers
too
quickly when operating
the cue
control lever (190)
Acoustic feedback
Cause
a) Belt
(15) is not
in
place:
mount the
belt.
b) Motor
(132) is not
powered:
check
switch base
(142) and
mains plug.
c)
Motor
pulley
(116) has
come
loose:
tighten it.
a)
Motor
pulley (116)
not in
compliance with
mains fre-
quency:
exchange.
b)
Belt (15)
slipping on
pulley
(116)
or
turntable (7): clean
all
surfaces
in
contact, if
necessary
replace belt
(15).
c)
Rated
speed
maladjusted:
read just.
Steel
ball
(166) of
shut-off bar (166) mis-
sing
Excessive or
insuffidient
damping as a resu lt of
contamination of
the
silicone oll in the lift
tube
a)
Chassis components
(e.g.
connecting leads)
rubbing on board
cut out
b)
Connecting leads too
tight.
3.
Power
Switch
Disconnect
meins plug. Swing the
tone arm (50) back to
its
support. Power switch (143)
must not turn off
before the
tone
arm has reached a
position about 3 mm
in front of the
support (Fig. 13).
If necessary, adjust by
bending the shift
arm
(172).
Defect
Tone arm head not
parallel to turntable.
Cause
The seat
of the tone -arm head in
the tube has been displaced
by the effect of shipping.
Repair
Remove
turntable, push screw
driver through hole (Fig. 14) and
slacken screw of tone -arm
head, align the head and
tighten the
screw.
Repair
a) Belt 15 is not in place: mount the belt.
b) Motor 132 is not powered: check
switch base 142 and mains
blug.
c) Motor
pulley 116 has come loose: tighten it.
a) Motor pulley 116 not in compliance with mains frequen-
cy: exchange.
b)
Belt 15 slipping on pulley 116 or
turntable 7: clean all sur-
faces in contact, if
necessary replace belt 15.
c) Rated speed
maladjusted: readjust.
Renew steel ball
Referring to page remove cue
control plate (182). Remove ad-
justment bush sleeve
(181). Remove lift pin (185) and com-
pression
spring
(184). Clean
lift
tube
and lift pin.
Smear lift
pin evenly
with "Wacker Silicone Oil AK 300 000". Reassemble
components.
a) Line up
mounting boar'd cut-out according to installation
instructions
b) Slacken or lengthen
leads.
8

Fig. 15
Exploded view
1
4‘.
4
L .-----------
0
C}1
!

Replacement
parts
Pos.
Part.-No.
Ctty.
Description
1
214 054 1 Washer
4 220 213 1
Centering piece
6 244 460
1 Turntable
lining
7
246 734 1
Turntable cpl.
8 234 428 1
Carrier cpl.
9 210
472 1
Fillister head screw
M 3 x
4
10
210 586 1 Washer
3.2
11 232 086
1 Tension spring
12 237 220 1
Locking rau l cpl.
13 240 000 1
Tension
spring
14 210 194
1 Grip ring
15 246 084 1 Flat belt
16 234 912 1
Control knob
17 239
270 1 Bearing
bush
18 234
910 1 Speed
lever
19 237 222 1 Speed
cover
20 213 260 3
Grooved drive
stud
21
237 414 3
Transport lock
22 246 735 1
Built-in plate cpl.
23 237 226 1 Spring
suspension
cpl.
(motor side
rear)
237 227
1 Spring
suspension
cpl.
(motor
right
frone
237 228
1 Spring
suspension cpl.
(pick
-up
arm side
rear)
237 229 1
Spring
suspension cpl.
(pick -up
arm side
front)
24 230 529 4
Threaded coupling
25 236
710 1 Pressure
spring
(motor
side
rear)
236 711
1 Pressure spring
(motor
side
front)
236 712 1 Pressure
spring
(pick
-up arm
side
rear)
236 713 1
Pressure
spring
(pick
-up arm
side front)
26 200 725 4 Rubber absorber
27 200 722
4 Pot
30 246 741 1 Pick -up arm head
cpl.
31 237 223 1 Contact plate cpl.
32 236 242 1 Fixture
TK
24
33
210 142 1 Locking washer
1.2
34
234 766 1 Throw-off lever
35 210 145 4 Locking washer
2.3
36 234 764 1 Friction plate
37 234 762 1 Carrier
43 234 635 2 Counter nut
44
230
063
1
Grub screw
45 246 736 1 Frame cpl.
46 234 634 1 Grub screw
47 234 635 2 Counter nut
49
246 744 1 Support cpl.
50 246 743 1 Pick
-up arm cpl.
51 240 964 1 Weight
52 210 147 1 Locking
washer
4
53 238 666
1 Mandril
54 233 744 1
Stay
55 240
966 1 Bearing frame
56 236 160 2 Support plate
57
239 565 2
Fillister head screw
M
2.5 x 3
58 241 447 1
Clamping screw
59 238 201 1 Threaded plate
60 238 202 2
Locking screw
61 237 672 1 Groove drive stud
1.4 x
6
62 238 623 1 Pointer
63
240 967 1 Bearing cpl.
64 236 907 1 Spring casing cpl.
65 237 563 1 Washer
66
237 564 1 Bearing screw
67 246
745 1 Rear cover
68 200 444 5 Spring
washer
70 246 737 1
Front cover
100 210 145 4 Locking
screw
2.3
101 234
824 1 Switch lever
102 236 374 1 Clip spring
103 232 094 1
Connection part
104 232 079
1 Shouldered nut
105 232 097 1 Belt wheel II
106 240 035
1 Washer
107
210 607
1 Washer 3.2/10/0.5
Pos.
Part.-No. Qty.
Description
108
210
362
CNI
Hex
nut
M3
109 232
076 Toothed belt
110
244 104 Hex nut
M3.5
111
241 641 Control curve
112 241
642
Belt
wheel I
113
241
644
Abutment
114
233 777 Tension spring
115
232 615 Pressure spring
116 234 453 Drive
roller cpl. 50
Hz
234 454
Drive roller cpl.
60
Hz
117
233 137 Grub screw
M 2.5 x 3
118 210 366 Hex nut
119
210 480 Fill ister head screw
M
3 x 6
120
210 609 Washer
3.2/10/1
121 241 328
Screen plate
122
232 841
Buffer
123 232
840
Insert plate
124 241 570
Upper
bearing stay
126 209 939
Sleeve
127 241
569 Stator 110/220 V cpl.
128 233 815 Fillister head screw M
2.5 x 18
129
241 571 Anchor
cpl.
130 241 572 Lower bearing stay
131 210 525
Fillister head screw
M 4 x 25
132 242 076 Motor SM
860/1
110/220V
cpl.
133
210 472
Fillister head screw
M 4 x
6
134 237 970
Holding rail
136 241 885 Capacitor 10 nF/250 V
230 355 Capacitor 68
nF/250 V
137 237 236 Bearing casing
cpl.
138 236
759
Earthing
spring
139 210 515
Fillister head screw
M 4 x 6
140
236 335
Slide
141 200 444
Spring washer
142 233 012
Switch panel cpl. (10 nF)
236 605
Switch panel cpl. (68 nF)
143 242
581
Mains switch cpl.
242 582
Mains switch
144
239 732
Tension spring
145 230 148
Switch
angle
146 219 200
Catch spring
147 242
095
Cover
148
210 498
Fillister head screw M 3 x
28
149 231 079
Cable clamps cpl.
150 214 602
Socket AMP
151 232
996
Mains lead Europe
152
232 995
Mains lead
USA
153 207 301
Phono pick -up cable Cynch
154
209 426
Cynch plug bleck
155 209 425
Cynch plug white
156 237 238
Pick -up connection plate
157 210 480
Fillister head screw M 3 x
5
158 236
080
Screen plate
159
210 480
Fillister head screw M 3 x 5
165 236 950
Stop bush
166 209 357 Ball
3.2
167 232 104
Ball bed
168 210
469
Fillister head screw AM 3 x 3
170
210 626
Washer 4.2/7/0.5
172
234
756
Switch arm
173
210 146
Locking washer
3.2
174
210 196
Grip
ring
175
234 760 Engaging lever
176
234 799 Tension spring
177 237 785 Wire spring
178 210 586 Washer
179
234 759 Screw bolt
181
234 800 Adjustable adaptor
182
234 790
Lift plate cpl.
183
210
472
Fillister head screw
AM
3
x 4
184 234 798 Pressure spring
185
234 795 Lift bolt
186 234 786 Catch
187 210 643 Washer
4.2/12/1
188
210 145 Locking washer
2.3
10

Fig. 16
Exploded
view
2
erer --- •
121
126. -
223
11

Pos. Part-No. Qty.
Description
189 234 789 1 Leg spring
190 210 146 3 Locking washer
3.2
191 210 469 2 Fillister
head screw
M 3 x 3
192 237 969 1 Bearing angle ..
193 237 974 1 Pressure spring
194 234 783 1 Adjusting rail
195 237 975 1 Bearing segment
199 209 436 4 Flat plug
206 210 366 1 Hex nut
207
244 331 1 Skating lever
210 210
146 3 Locking washer
3.2
211 240 970 1 Segment
212
201 184 1 Adjusting washer
213 210 362 2 Hex nut
M3
214 218 591 1 Tension spring
215 234 807
1
Switch-off raul
Lubrication
All
bearing and
friction
points of
the
unit are adequately
lubricated
at the
works.
Replenishment of oil
and grease
is only necessary
after
approximately 2 years of normal
use of
the record player as the
most important bearing points
lmotor bearings) have sintered
metal
bushes.
Bearing
points and friction faces
should
be lubricated
sparingly
rather than
generously.
lt is
important that no oh
l grease
should
come in
contact with
the
friction
faces of the
flat
belt,
drive pulley
and
flywheel rotor,
otherwise Slip
will
occur.
When using
different
lubricants,
chemical
decomposition can
of-
ten take
place. To
prevent
luvri-
cation
failure we
recommend
us-
ing the
original
lubricants
stated
below.
Renotac No. 342
adhesive
oil
BP
Super Viscostatic
10 W/30
Shell Alvania
No. 2
Isoflex POP 40
Silicone oil
AK 500 000
Fig.
17
Pos. Part-No.
Qty.
Description
216 201 187 1 Sliding washer
217 210 145 1 Locking washer
218
234 780 1 Lifting raul
219 240 893 1 Grip hub cpl.
220 237 543 1 Rubber bush
221 234 778 1 Torsion spring
223 234 777
1 Stroke curve
224 237 972 1 Bearing stay
226 233 710 1 Tension spring
227
210 469 2 Fill ister head screw
M 3 x
3
232 209 424 1 5 -pole plug DIN
233 207 303 1 Phono pick -up cable cpl.
*** 214 120
1 TA fixing material
*** 244 749 1 Operating instructions
' 245 517 1 Operating
instructions UAP
*** 241 278 1 Shipping canon CS
*** Parts not
illustrated
Subject
to change
Safety
regulations
Servicing
of electronic
equipment
should be
performed only
by
authorized service
personnel.
During
service the
unit has to be
operated with
an isolated
trans-
former.
Safety
requirements (e. g.
VDE 0860 H)
haveto be
strictly
observed
during repair.
In
order to not
reduce safety, the
original design of
the unit should
not be
changed, e. g. cover
plates,
mechanically secured
wiring,
tracking and creepage
distance in air
etc.
Use
only factory
replacement
parts which
must be
reinstalled per
original design.
Upon
completion of
repair make
shure that all
accessible and
conductive parts do not
carry line voltage.
920546-2
5.2/0878 Printed in
Germany by Dual