manuals.online logo
Brands
  1. Home
  2. •
  3. Brands
  4. •
  5. Dual
  6. •
  7. Turntable
  8. •
  9. Dual CS 731 Q User manual

Dual CS 731 Q User manual

Other manuals for CS 731 Q

2

Other Dual Turntable manuals

Dual CS 600 HiFi User manual

Dual

Dual CS 600 HiFi User manual

Dual CS 618 Q User manual

Dual

Dual CS 618 Q User manual

Dual DTJ 301.2 USB User manual

Dual

Dual DTJ 301.2 USB User manual

Dual CH 5 User manual

Dual

Dual CH 5 User manual

Dual CS 714 Q User manual

Dual

Dual CS 714 Q User manual

Dual PRP 5 User manual

Dual

Dual PRP 5 User manual

Dual 601 User manual

Dual

Dual 601 User manual

Dual CS 506 User manual

Dual

Dual CS 506 User manual

Dual CS 522 User manual

Dual

Dual CS 522 User manual

Dual CS 506 User manual

Dual

Dual CS 506 User manual

Dual CS 520 User manual

Dual

Dual CS 520 User manual

Dual DTJ 303 USB User manual

Dual

Dual DTJ 303 USB User manual

Dual 491 User manual

Dual

Dual 491 User manual

Dual 506 User manual

Dual

Dual 506 User manual

Dual 721 User manual

Dual

Dual 721 User manual

Dual HS 148 User manual

Dual

Dual HS 148 User manual

Dual 521 User manual

Dual

Dual 521 User manual

Dual 1249 User manual

Dual

Dual 1249 User manual

Dual ASP 130 User manual

Dual

Dual ASP 130 User manual

Dual 1224 User manual

Dual

Dual 1224 User manual

Dual 701 User manual

Dual

Dual 701 User manual

Dual CS 150 Q User manual

Dual

Dual CS 150 Q User manual

Dual 1225 User manual

Dual

Dual 1225 User manual

Dual CS 626 User manual

Dual

Dual CS 626 User manual

Popular Turntable manuals by other brands

Technics SP-10 MKIIP Service manual

Technics

Technics SP-10 MKIIP Service manual

Trevi Mpv 1745 SD instructions

Trevi

Trevi Mpv 1745 SD instructions

Noblex NXC1039BT Service manual

Noblex

Noblex NXC1039BT Service manual

I.A.V. Piccolo owner's manual

I.A.V.

I.A.V. Piccolo owner's manual

JVC QL-Y5F Instruction book

JVC

JVC QL-Y5F Instruction book

Gemini CDT-05 MKII product manual

Gemini

Gemini CDT-05 MKII product manual

Rotel RP-820 owner's manual

Rotel

Rotel RP-820 owner's manual

Shuman MC-250BT user manual

Shuman

Shuman MC-250BT user manual

Stanton STR8-150 owner's manual

Stanton

Stanton STR8-150 owner's manual

Audio Technica AT-LPW40WN user manual

Audio Technica

Audio Technica AT-LPW40WN user manual

Crosley McQueen CR7011-GY instruction manual

Crosley

Crosley McQueen CR7011-GY instruction manual

auna TT-Classic Plus instruction manual

auna

auna TT-Classic Plus instruction manual

COMO AUDIO Turntable Analog user manual

COMO AUDIO

COMO AUDIO Turntable Analog user manual

AXIOMTEK OPS883-H Series Quick installation guide

AXIOMTEK

AXIOMTEK OPS883-H Series Quick installation guide

Pioneer PL-71 operating instructions

Pioneer

Pioneer PL-71 operating instructions

Vestax PDX-a1 owner's manual

Vestax

Vestax PDX-a1 owner's manual

Denon DP-400 owner's manual

Denon

Denon DP-400 owner's manual

Audio-Techica AT-LP60XBT user manual

Audio-Techica

Audio-Techica AT-LP60XBT user manual

manuals.online logo
manuals.online logoBrands
  • About & Mission
  • Contact us
  • Privacy Policy
  • Terms and Conditions

Copyright 2025 Manuals.Online. All Rights Reserved.

Dual
CS
7310
Service
Manual
Fig.
1
TA-Anschlußschema
/
Audio
Connection
Diagram
/
Schema
de
branchement
/
Esquema
de
conexion
del
fono
captor
а)
mit
DIN-Stecker
5-polig
/
with
DIN-plug
5
pin
b)
mit
Cynchstecker
/
with
phono
plug
avec
fiche
DIN
5
pöles
/
con
enchufe
DIN
de
5
poles
avec
fiche
cynch
/
con
enchufe
Cynch
rechter
Kanal
right
channel
canal droit
сапа!
дегесћо
rot
/
гей
/
rouge
/
rojo
rechter
Kanal
/
right
channel
Canal
droit
/
Canal
derecho
rot
(schwarz)
/red
(black)
rouge
(noir)
/
rojo
(negro)
linker
Kanal
/
left
channel
|
Canal
droit
/
Canal
izquierdo
1
gelb
(weiß)
/
yellow
(white)
|
jeune
(blanc)
/
amarillo
(blanco)
|
=
4
f
у
Tonabnehmerkabel
гд
PS
Ns
«|
Tonearm
audio
cable
E)
|
Cable
de
BF
M
Ee
Сава
ве
чопекаркег
!
Г.
Cynch-Tonabnehmerkabel
l
|.
Pick-up
lead
with
Cynch
plug
linker
Kanal
1
1
Cable
de
BF
avec
fiche
Cynch
left
channel
|
|
Cable
del
fonocaptor
con
canal
gauche
Ї
|
enchufe
Cynch
canal
izquierdo
Masse
draht
/
Mass
lead
!
мей
/
white
/
blanc
/
blanco
Mass
cable
/
Masa
cable
|
|
|
|
|
Masse
rechter
Kanal
H—
Masse
linker
Kanal
Mass
right
channel
|
I
`
Mass
left
channel
Masse
canal
droit
d
|
—
Masse
canal
gauche
Stummschaltrelais
тава
canal
derecho!
|
тава
canal
izauierdo
Silent
switch
relay
|
!
Relais
—
conmutateur
Stummschaltrelais
!
|
silencieux
Silent
switch
relay
!
|
Relé
de
conmutacion
Relais
—
conmutateur
silencieux
|
|
silenciosa
\
Relé
de
conmutacion
silenciosa
t.
d
scis
Р!
RN
ас
——
roter
See
=|
rechter
Kanal
right
channel
canal
droit
canal
derecho
rot
/
red
/
rouge
/
rojo
1 ]
|
|
|
!
1
|
linker
Kanal
|
left
channel
|
canal
gauche
|
canal
izquierdo
weiß
/
white
/
blanc
/
blanco
Kurzschließer
Muting
switch
Court-circuiteur
Ї
Dispositivo
cortocircuitador
!
1
Masse
linker
Капа!
1
Mass
left
channel
|
Masse
canal
gauche
|
masa
canal
izquierdo
blau
/
blue
/
bleu
/
azul
Masse
rechter
Kanal
Mass
right
channel
Masse
canal
droit
masa
canal
derecho
grün
/
green
/
vert
/
verde
Masse
schwarz
|
Ц
!
Mass
black
ol
|
Masse
noir
1----
Masa
negro
1
Masseblech
4)
Mass
sheet
E
ZEZA
Prise
де
masse
chapa
de
masa
Tonarmkopf
Tonearm
head
Téte
magnétique
Cabezal
fonocaptor
Kontaktplatte
Contact
plate
Plaque
de
contacts
Placa
de
contacto
Zb
Contents
т
Ф
‹
‹ю
©
‹©
ф®
с
оо
со
©
оо
оо
єз
4 4
4
©
®›
Ф›
Ф
Ф
Ф
Ф
лл
D
WN
È
Ф
Technical
data
Current
type
Line
voltages
Drive
Power
consumption
Run-up
time
Platter
Platter
speeds
Pitch
control
Speed
check
Sensitivity
of
light
stroboscope
for
0.3
%
speed
deviation
Wow
and
flutter
Signal-to-noise
ratio
Tonearm
Effective
tonearm
length
Offset
angle
Tangential
track
error
angle
Tonearm
bearing
friction
(related
to
stylus
point)
Tracking
force
Pick-up
head
Cartridge
Weight
Tonearm
connection
diagram
Technical
data
Block
diagram
Direct
drive
system
EDS
920
Wiring
diagram
General
Fascia
Motor
and
drive
Replacing
motor
electronic
system
Replacing
motor
mechanical
system
Pitch
control
Stroboscope
Tonearm
and
tonearm
suspension
Fitting
a
1/2“
cartridge
Removal
of
tonearm
from
bearing
frame
Removal
of
complete
tonearm
Replacement
of
spring
housing
Adjustment
of
tonearm
suspension
Anti-skating
control
Tonearm
cue
control
Adjustment
point
Replacement
of
cue
control
plate
Tonearm
control
Continuous
play
Starting
Manual
start
Muting
Shut-off
End
of
play
shut-off
Adjustment
points
Power
fuse
Tonearm
set
down
point
Shut-off
point
Tonearm
lift
off
height
Pull
magnet
“start/stop”
Pull
magnet
“сиеїпд”
Tonearm
does
not
set
down
Vertical
tonearm
movement
is
inhibited
Platter
does
not
rotate
Tonearm
does
not
set
down
on
edge
Motor
does
not
shut-off
Spare
parts
list
with
exploded
views
Lubrication
instructions
AC
50
or
60
Hz
110
—
125
V
and
220
—
240
V
Quartz
stabilized
electronic
direct
drive
system
Dual
EDS
920,
PLL
control
Approx.
4
УУ,
motor
during
play
<
50
mW
{until
nominal
speed
is
reached)
approx.
1.8
sat
33
rpm
Non-magnetic
dynamically
balanced,
complete
rotary
mass
detachable
approx.
1.5
kg
33
and
45
rpm,
electronically
switchable,
quartz
stabilized
In
PLL
technology,
quartz
accurate
for
both
speeds,
separately
adjustable,
range
of
adjustment
+
5.5
96
Quartz
accurate,
illuminated
stroboscope
with
automatic
frequency
switch-over
for
33
and
45
rpm
20
graduations
per
minute
DIN
<
t0.025
96
WRMS
<
+0.015%
Rumble
unweighted
signal-to-noise
ratio
>
52
dB
Rumble
weighted
signal-to-noise
ratio
>
7598
Torsion-resistant
“ultra-low-mass”
aluminum
tonearm,
in
gimbal
4-point
suspension,
tonearm
balance
weight
with
tuning
anti-resonator
221mm
2604!
0.169
/ст
Vertical
<
0.07
mN
(0.007
g)
Horizontal
<0.15mN
(0.015
g)
From
0
—
20
mN
(0
-
2
g)
infinitely
variable
with
1
mN
(0.1
а)
Calibration
in
range
from
2
—
15
mN
(0.2
-
1.5
g)
Detachable,
suitable
for
ultra-low-mass
cartridges,
with
long
carrier
plate
(accessory),
also
suitable
for
cartridges
with Dual
shap-in
mounting
and
for
cartridges
with
1/2"
mounting
and
a
weight
of
2
to
9
g
(including
mounting
hardware)
Adjustable
overhang:
5
mm
See
separate
data
sheet
Approx.
8
kg
suonisod
EL
e
зпазацри|
99
fiL
ejos
EL
À
зпицузта
uoneoipu|
uoneapu!
snuiysnid
Sbiozuy-snuipy-snid
51014
е
зпауоеуцоо)
чонмз
apesse
звиецозизрежеу
зпицизта
мог
мопезупиор!
Bunuue13-snuipyrsi
1
|
епњибојешејјеџ
бир
зпезапзелио
заивлиод
ou
eat
aeuo
jury
бојему
темена
H
зеца
op
uonenen
meyenbipur
|
човезупизр!
иоцејләр
poads
Bunuuajag-4ug-14ezyaq
|
морио
өр
зпозеутбен
4921119835
9бецол,
зөцецуае
цо
у
-збипицеде.
anossoupoy
зацпогн
зазцонч2еј
Fig.
2
3n0LLdONAS
anoeuniojsuea
|
зашлојвив
|
Jojeunojsuea
1
VW3HOS
qoxoqonsq31
(131 €
adossogong
'eyueysuoo
зиезпоз
ар
голпоб.
egonsq31
зозпов
зивипо
14еу5002
зтдин
е
тэроэод
зароаад
asınd
зарозвазташц
|uoisinduis
p
anaxeinpoyy|
задеуз
asınd
звинод-зпвиц
әззәил
еј
әр
шу
abejay
1011009
она
ejjonbuio
n
S-ue1suoy
забан-мацоциој.
өвөнл
ej
өр
әбеүбәз
зпазапшшод
4
цоцив
цомд
эәцецәзиәцоцио
L
1
218:
L
anasiaig
assaya
әр
anayernuwiog
зәлоабиецо
pads,
aeyeuosuniuezuaiq
Злезполо
иполо-
114
бипуецоѕ
114
эрпийшү,р
anayeaiyiidury]
ашу
әј
звено
марта
шу
зөвбид
geg
зебби
|
зишцр5
Prem
элошәш
ua
asju
Dane
ojo
uoo
гр
ипәл2
unaua
роц-рив-әдше$
Билцецэс-рюн
pue-ajdwes|
чекаа
зпазоуј
Jong
1010)
498091
100W
Wva9vid
52018
апаллунозхоопа
EDS
920
direct
drive
system
The
newly
developed
direct
drive
system
of
the
CS
731
О
turn-
table
is
a
successful
synthesis
of
our
well-known
motor
principle
and
a
highly
sensitive
electronic
system
which
receives
its
accu-
racy
from
a
quartz
crystal.
The
drive
motor
is
a
DC
motor
with
по
commutator
in
which
commutation
is
carried
out
by
two
Hall
generators
which
detect
the
position
of
the
rotor
equipped
with
an
8-pole
ring
magnet
and
which
also
actuate
the
corresponding
windings
of
the
rigid
flat
coils.
The
synchronously
rotating
mag-
netic
return
circuit
plate
and
the
ring
magnet
enclose
with
a
small
air
gap
the
non-ferrous
coil
arrangement
so
that,
on
the
one
hand,
the
drive
system
displays
an
extremely
uniform
running
characteristic
without
pole
sensitivity
and
which
displays,
on
the
other
hand,
a
high
torque
in
spite
of
the
economical
energy
supply.
After
the
nominal
speed
has
been
attained,
the
energy
supply
required
for
maintenance
of
rotation
is
less
than
50
mW.
Fig.3
Description
of
function
At
a
motor
speed
of
33
1/3
rpm,
the
200-pole
frequency
genera-
tor
rigidly
coupled
to
the
motor
delivers
a
frequency
of
111
Hz
which
is
amplified
in
the
input
amplifier
and
prepared
in
the
cam
form.
This
signal
is
applied
as
an
actual
value
to
the
PLL
circuit.
An
oscillation
frequency
of
4.608
MHz,
which
is
controlled
by
a
highly
precise
quartz
crystal,
is
generated
in
the
quartz
oscillator.
The
actual
reference
frequency
—
that
is
to
say,
the
set
value
—
is
derived
from
the
oscillator
frequency
by
a
multi-stage
divider.
In
the
PLL
circuit,
the
actual
value
and
set
value
are
compared
with
one
another
as
regards
amount
and
phase.
In
the
case
of
the
slightest
deviation,
a
control
pulse
is
applied
to
the
digital/analog
converter
which
obtains
from
this
an
analog
control
signal
which
is
converted
into
a
current
alteration
in
the
subsequently
connec-
ted
motor
control
circuit.
In
the
drive
motor,
this
current
altera-
tion
causes
spontaneous
stabilization
of
the
minimal
speed
devia-
tion.
The
set
value
necessary
for
the
45
rpm
speed
is
generated
in
the
voltage
divider
by
alteration
of
the
divider
ratio.
For
pitch
control,
а
continuously
variable
control
signal,
with
which
the
control
loop
is
fed,
is
obtained
by
means
of
a
complicated
division
pro-
cess.
Thus
the
complete
control
range,
like
the
nominal
speeds,
is
coupled
in
a
locked-phase
relation
to
the
quartz
oscillator.
The
speed
accuracy
in
the
pitch
range
is
practically
the
same
as
in
the
case
of
nominal
speed.
The
speed
deviation
preselected
with both
pitch
controls
is
maintained
even
if
the
pitch
switch
is
operated
or
if
the
unit
is
seitched
off.
In
the
speed
logic,
the
display
unit
of
the
CS
731
Q
obtains
from
the
actual
speed
the
basic
information
as
to
whether
the
actual
speed
of
the
nominal
speed
is
faster
or
slower.
A
further
logic
sy-
stem
activates
the
plus
or
minus
sign
of
the
display
unit.
Both
signals
are
dark
at
rated
speed.
From
the
digital
information
on
the
actual
speed,
a
further
digital
/analog
converter
receives
relative
and
analog
information
which
is
transformed
in
the
cascade
switch
to
an
activation
voltage
for
the
13
digital
displays.
In
the
display
itself
the
information
is
still
completely
analog
as
the
individual
digits
are
activated
with
differentiated
voltages
and
light
up
accordingly.
This
display
is
as
accurate
as
it
is
practical.
The
power
section
supplies
the
various
partial
circuits
with
carefully
filtered
and
stable
operating
voltages.
General
The
listed
item
numbers
refer
to
the
following
spare
parts
lists
and
exploded
views.
The
cover
can
be
easily
withdrawn
from
the
hinged
splice
pieces.
To
remove
the
turntable,
remove
both
fillister
head
screws
(98)
and
the
discs
(86)
with
which
the
mounting
plate
(197)
is
screwed
down.
The
turntable
can
be
lifted
out
of
the
bracket
(12)
after
disengaging
the
three
transport
locking
screws.
Now
detach
the
following
plug
connections:
1)
Both
single-pole
plugs
(722)
on
power
switch
(106).
2)
The
4-pole
plug
(160)
on
the
solenoid
protective
circuit
(185).
3
The
5-pole
female
multi-point
connector
(158)
at
the
display
unit
(35).
4
The
5-pole
female
multi-point
connector
(185)
at
the
distri-
butor
board
(24).
Fascia
To
dismantle
the
fascia,
remove
both
attachment
screws
(21)
with
which
the
display
unit
is
mounted
on
the
bracket
base.
bracket
base.
The
top
of
the
plate
(17)
is
attached
with
3
fillister
head
screws
(98)
and
three
washers
(86)
and
the
bottom
is
attached
with
three
cheesehead
screws
(50).
Fig.
4
Motor
and
drive
Special
tools
and
measuring
instruments
are
necessary
for
repair
of
the
Dual
EDS
920.
Therefore,
work
on
the
motor
or
the
motor
electronic
system
should
only
be
carried
out
by
an
authorized
Dual
service
station.
Replacement
of
the
motor
electronic
system,
complete
The
individual
modules
(151/152/153)
are
plugged
into
the
main
board.
In
addition,
they
are
held
by
means
of
supports
(154).
Moreover,
module
1
is
also
secured
with
the
fixing
screw
(159).
When
replacing
the
complete
motor
electronic
system,
proceed
as
follows:
1)
Remove
the
fillister
head
screws
(97)
and
the
four
supports
(154).
2)
Remove
fixing
screw
(159)
(module
1).
3)
Detach
the
plug
connections
fo
the
connection
cable
—
refer
to
wiring
diagram
Fig.
3.
4
Detach
the
motor
electronic
system
completely
from
the
mechanical
system
of
the
motor
and
replace
it.
Replacement
of
the
mechanical
system
of
the
motor
1)
Release
both
threaded
pins
(19)
and
withdraw
plate
cone
(22).
2)
Remove
the
complete
motor
electronic
system
—
see
above.
The
plug
connections
of
the
connecting
cable
need
not
be
removed.
3)
Remove
both
fillister
head
screws
(99)
and
the
cog
(105).
4)
Withdraw
the
mechanical
system
of
the
motor
and
replace
it.
Fig.5
97
14
14
Pitch
control
With
the
pitch
control,
each
of
the
two
rated
speeds,
33
1/3
and
45
rpm,
can
be
varied
by
+
5.5
96.
With
the
seesaw
switch
(16)
at
"ОМ"
position,
each
nominal
speed
can
be
altered
by
means
of
a
separate
potentiometer
(14).
At
the
same
time,
the
optoelectronic
display
scale
(35)
indicates
the
percentage
deviation
from
the
nominal
speed.
Independently
of
the
potentiometer
setting
(14),
the
speed
cor-
responds
with
quartz
precision
to
the
respectively
switched
no-
minal
speed,
if
the
seesaw
switch
(16)
is
in
“OFF”
position.
Stroboscope
The
stroboscope
markings
on
the
turntable
edge
are
flashed
from
the
diode
plate
(148)
by
means
of
quartz
accurate
frequency.
The
display
is
independent
of
power
frequency
and
does
not
re-
quire
additional
stroboscope
markings
for
different
speeds
and
line
frequencies.
When
the
stroboscope
markings
seem
to
be
stationary
both
по-
minal
speeds
(33 1/3
and
45
rpm)
are
accurately
adjusted.
If
the
markings
seem
to
run
ahead
the
speed
is
higher.
If
the
markings
seem
to
run
back
the
speed
is
lower
than
the
nominal
speed.
By
means
of
the
speed
of
the
apparently
“wandering”
markings
the
speed
selected
with
potentiometer
(14)
can
be
determined
at
high
speeds:
1
graduation/sec.
=
0.9
96
deviation.
After
releasing
the
fixing
screw
(159)
and
removing
both
fillister
head
cap
screws
(96)
the
stroboscope
housing
can
be
removed
(149).
After
re-
moving
the
retainer
piece
(147)
the
three
LED's
(148)
can
be
re-
placed.
Tonearm
and
tonearm
suspension
The
light,
torsion-resistant
all-metal
tonearm
is
twingimbal
mounted.
Suspension
is
by
means
of
four
hardened
and
precision
polished
steel
points
which
rest
in
precision
ball
bearings.
The
tonearm
bearing
friction
is
thus
reduced
to
a
minimum.
Bearing
friction
vertical
0.07
mN
(0.007
g)
Bearing
friction
horizontal
0.15
mN
(0.0159)
as
related
to
stylus
point.
This
ensures
extremely
favorable
pick-up
conditions.
Before
setting
the
tracking
force
corresponding
to
the
built-in
pick-up
cartridge
the
tonearm
is
balanced
at
O
position
of
the
tracking
force
scale.
Coarse
adjustment
is
carried
out
by
moving
the
weight
with
stem
(60)
subsequent
fine
adjustment
by
turning
the
front
knurled
ring
on
the
weight.
The
balance
weight
is
designed
so
that
pick-up
cartridges
having
a
dead
weight
(including
fitting
material)
of
2
—
9
g
can
be
balanced.
The
tracking
force
is
produced
by
tensioning
the
coil
spring
fitted
in
the
spring
housing
(74).
The
rotary
knob
(69)
is
provided
with
a
scale
which
permits
accurate
adjustment
of
the
tracking
force
in
the
range
from
0
—
20
mN
(0
-
2
p)
by
means
of
the
marking
dots.
Fitting
a
1/2"
cartridge
The
description
of
retrofitment
for
fitting
а
1/2“
cartridge
(ге-
placement
of
carrier
plate
etc.)
should
be
taken
from
the
opera-
ting
instructions.
Fig.7
27
52
84
Fig.6
Й
147
146
149
96
Ветоуа!
of
tonearm
from
bearing
frame
1)
Secure
unit
in
repair
jig.
Remove
weight
(60).
Unscrew
ten-
sioning
screw
(52).
Set
rotary
knob
(63)
to
0.
Turn
unit
upside
down.Remove
hexagon
nut
(34)
and
screening
plate
(119).
Unsolder
tonearm
leads
on
muting
switch
(120).
Unscrew
tensioning
screw
(70).
Remove
rotary
knob
(69),
disc
(68)
and
indicator
(67).
4)
Loosen
locking
nut
(61)
and
unscrew
threaded
pin
(65).
5)
Remove
tonearm
(30)
with
bearing
(71).
Assembly
takes
place
in
reverse
order.
2
3|
Removal
of
tonearm
assembly
with
tonearm
bearing
Proceed
as
follows:
1,
Secure
unit
in
repair
jig.
Set
rotary
knob
(69)
to
0.
Lock
tonearm
(30).
Remove
weight
(60)
2.
Turn
unit
upside
down.
Remove
hexagon
nut
and
screening
plate
(119).
Unsolder
tonearm
leads
on
muting
switch
(120).
3.
Remove
retainer
disc
(91).
Remove
main
lever
(167)
and
bearing
block
(166).
Remove
securing
disc
(89).
Lift
off
ad-
justing
bar
(168)
and
rotary
bearing
(170)
and
swivel
to
motor.
141
187
96
168
190
167 176
97
4.
Disengage
tension
spring
(136).
Release
securing
disc
(90)
and
remove
skating
lever
(134).
5.
Remove
hexagon
nuts
(94).
Remove
countersunk
screw
(138).
Remove
counterbearing
(135)
and
segment
(124).
6.
Retain
tonearm
(30)
and
frame
(63).
Remove
filister
head
cap
screw
(88).
Remove
tonearm
complete
with
tonearm
bearing.
When
fitting
the
tonearm
proceed
in
reverse
order
but
ensure
that
the
threaded
pin
(62)
seats
correctly
on
ball
bearing.
Replacing
spring
housing
Remove
tonearm
(30)
from
bearing
frame
(66)
as
described
above.
When
installing
notice
that
the
helical
spring
engages
in
the
cut-
outs
of
the
bearing
(71).
Mount
tonearm
(30)
again.
Set
bearing
play
as
described
below
using
threaded
pin
(65)
and
lock
nut
(61).
Adjusting
the
tonearm
bearing
First
balance
tonearm
accurately.
Both
bearings
must
have
slight,
just
perceptable
play.
The
horizontal
tonearm
bearing
is
correctly
adjusted
when
at
anti-skating
setting
0.5
and
being
touched
it
slides
in
without
resistance.
The
vertical
tonearm
bearing
is
cor-
rectly
adjusted
when
it
swings
in
after
being
touched.
The
play
of
the
horizontal
tonearm
bearing
should
be
adjusted
with
thre-
aded
pin
(62),
the
play
of
the
vertical
tonearm
bearing
with
threaded
pin
(65).
Anti-skating
device
Adjustment
of
anti-skating
force
is
carried
out
by
means
of
turning
the
knurled
ring
on
the
cover.
According
to
adjustment
the
asymmetrical
cam
disc
guides
the
skating
lever
(134)
from
the
tonearm
pivot
point.
The
anti-skating
force
is
transmitted
to
the
segment
(124)
by
means
of
tension
spring
(136)
and
to
the
tonearm.
Optimum
adjustment
is
carried
out
at
the
works
for
styli
with
a
tip
radius
of 15
um
(conical),
5/6
x
18/22
ит
(elliptical)
and
CD
4
cartridges.
Any
alteration
can
only
be
carried
out
with
the
aid
of
a
Dual
skate-O-meter
and
a
test
record
and
should
only
be
done
by
an
authorized
Dual
service
station.
Cue
control
By
moving
lever
(187)
forward
(Y.)
lift
cam
(188)
rotates.
The
slide
bar
(168)
connected
to
it
transmits
this
movement
to
the
lift
pin
which
then
raises
the
tonearm.
As
a
result
the
cue
control
permits
set
down
and
lift
off
of
the
tonearm
at
any
desired
point
outside
the
shut-off
range.
The
slide
bar
(168)
is
released
again
by
moving
the
cue
control
lever
(187)
to
the
rear
(X).
As
a
result
of
the
action
of
compres-
sion
spring
the
lift
pin
is
returned
to
neutral
position
and
thus
lowers
the
tonearm.
Lowering
of
the
tonearm
is
damped
by
silicone
oil
in
the
lift
tube.
The
set
down
speed
can
be
varied
by
adjusting
the
pretension
of
compression
spring
(lift
plate
176).
According
to
operation
of
the
adjusting
ring
(82)
in
position
"4"
the
lowering
speed
is
slower,
in
position
"444"
it is
faster.
Adjustment
point
The
lift
height
can
be
varied
by
turning
adjusting
screw
(51).
The
distance
between
record
and
stylus
should
be
approximately
5
mm.
63
|—
62
74
66—
a
69
70
65-
e
=
тз
т
72
8t
82
83
ын
485
124-
94
138
Replacement
of
cue
control
plate
Replace
cue
control
plate
as
follows:
1.
Fix
unit
on
repair
jig
and
lock
tonearm.
Turn
unit
upside
down.
2.
Remove
securing
disc
(89).
Detach
main
lever
(167)
and
bearing
block
(166).
3.
Remove
securing
disc
(89).
Remove
adjusting
bar
(168)
and
rotary
bearing
(170)
and
swivel
to
motor.
4.
Remove
both
filister
head
cap
screws
(97),
remove
cue
control
plate
complete
(176).
Fitment
takes
place
in
reverse
order.
It
should,
however,
be
noted
that
the
pressure
piece
in
the
cue
control
plate
(176)
engages
correctly
in
adjusting
ring
(82)
(varying
the
lowering
speed.
Fig.9
е
9
Tonearm
control
Automatic
movement
of
the
tonearm
is
indicated
by
the
control
cams
on
the
inside
of
the
cam
wheel
(16)
on
rotating
through
3600.
The
control
elements
for
raising
and
lowering
are
the
control
lever
(167)
and
the
lift
pin,
for
horizontal
movement
of
the
tonearm
control
lever
(167)
with
segment
(124).
The
automatic
set
down
point
is
designed
for
30
ст
and
17
ст
records
and
is
coupled
to
the
platter
speed
changeover.
Set
down
points
of
the
tonearm
are
determined
by
means
of
stop
of
spring
bolt
of
segment
(124)
at
the
adjusting
bar
(168).
Limitation
of
the
horizontal
movement
of
the
tonearm
is
produced
by
stop
of
segment
on
adjusting
bar
(168)
which
is
lifted
off
only
during
set
down
by
the
main
lever
(167)
and
reaches
the
swivel
range
of
the
spring
bolt
on
the
segment.
On
completion
of
set
down
(lowe-
ring
of
the
tonearm
onto
the
record)
slide
bar
(168)
is
released
again
and
returns
to
its
neutral
position.
As
a
result,
this
is
out-
side
the
range
of
the
spring
bolt
so
that
unimpeded
horizontal
movement
of
the
tonearm
is
possible
for
playing.
Continuous
automatic
play
The
continuous
automatic
play
is
operated
by
turning
knob
(84)
to
"00".
Switch
bracket
(179)
is
actuated
by
knob
(84).
Switch
rod
(180)
keeps
change
lever
(165)
in
start
position.
After
playing
the
record
the
tonearm
returns
automatically
to
the
lead
in
groove
of
the
record.
This
process
will
be
repeated
until
knob
(84)
is
in
position
“17.
Adjustment
point
Withdraw
power
plug.
Remove
turntable
(3).
Bring
knob
(84)
to
position
“оо”,
Turn
cam
wheel
to
center
position.
The
change-
over
lever
deflects
the
cam
follower
lever
(U).
By
this
means
the
cam
follower
lever
tip
must
be
brought
at
least
to
the
cam
track
center.
Adjustment
by
bending
the
switch
rod
(189).
Starting
Operation
of
push-button
(59)
“start”
results
in
the
following
functions:
a)
The
right
hand
pull
magnet
(142)
operates
cam
followerlever
(165).
At
the
same
time
the
power
switch
(106)
is
operated
by
the
contact
arm
(127)
coupled
to
the
switching
arm
(78)
and
the
motor
and
turntable
start
to
rotate.
b)
This
operation
also
releases
start
slide
(39)
which
is
drawn
in
the
direction
of
the
cam
wheel
by
means
of
the
tension
spring
(38).
By
this
means
the
shut-off
lever
(8)
on the
cam
wheel
(25)
is
brought
into
the
range
of
the
follower
(M)
(plate
cone
22)
and
the
cam
wheel
driven
by
this
means.
Manual
start
The
detent
(126)
coupled
to
control
arm
(78)
engages
in
the
square
plate
(125)
when
the
tonearm
is
moved
inward
by
hand
and
retains
the
tonearm
in
this
position.
The
power
switch
is
operated
by
the
control
arm
and
thus
the
motor
and
platter
start
to
rotate.
After
reaching
the
run-out
groove
of
the
played
record
return
of
the
tonearm
and
shut-off
of
the
unit
take
place
automatically.
If,
on
the
other
hand
the
tonearm
is
lifted
off
the
record
before playing
is
completed
and
moved
onto
the
rest
by
hand,
the
pin
of
segment
(124)
disengages
the
detent
(126)
so
that
the
control
arm
is
returned
to
its
starting
position.
As
a
result,
the
power
switch
shuts
off
the
power
supply.
Muting
switch
To
prevent
disturbing
noises
during
automatic
operation
of
the
tonearm
the
unit
is
fitted
with
a
muting
switch.
Control
of
the
switch
springs
for
both
channels
is
effected
by
the
cam
wheel.
With
the
unit
in
neutral
state
the
short-circuit
of
the
pick-up
leads
is
eliminated.
Adjustment
point
In
neutral
position
of
the
cam
wheel
a
contact
distance
of
ap-
proximately
0.5
mm
should
be
present
between
contact
springs
(F)
and
short-circuit
strips
(L).
If
necessary
bend
short-circuit
strips.
Spray
contact
springs
with
suitable
means.
167
91
124
134
Fig.
11
22M
25
A
37
128
36
Stopping
When
push-button
(59)
"зор"
is
operated
the
changeover.lever
(165)
is
brought
into
stop
position
by
means
of
the
left
hand
pull
magnets
(142).
As
a
result
the
start
slide
is
released
which
is
drawn
in
the
direction
of
the
cam
wheel
by
means
of
tension
spring
(38).
By
this
means
the
shut-off
lever
is
brought
into
the
range
of
the
follower
on
the
platter
pinion
(PR)
and
the
cam
wheel
(25)
is
thus
driven.
Shut-off
operation
The
functions
of
end
switch-off
and
stop
switching
are
determi-
ned
by
the
position
of
the
deflection
lever
(U).
The
deflection
lever
(U)
is
broughtto
stop
position
bythe
main
lever
(167)
after
every
start
operation
(longer
end
of
deflection
lever
to
cam
wheel
center).
‚After
playing
of
a
record
shut-off
is
initiated
by
the
follower
(M)
of
the
platter
(3)
and
the
shut-off
lever
(А).
The
shut-off
bar
(128)
is
only
moved
synchronously
by
the
bolts
of
the
segment
(126)
in
the
shut-off
range.
In
the
shut-off
range
(records
116
to
122
mm
0)
the
shut-off
lever
(A)
is
guided
onto
the
follower
(Fig.
13
a)
by
the
shut-off
bar
(128).
The
follower
(M)
engages
shut-off
lever
(A).
By
this
means
cam
wheel
(25)
is
brought
out
of
zero
position
in
engage-
ment
with
pinion
of
platter
(Fig.
13
b).
The
main
lever
(167)
guides
the
tonearm
back
and
effects
tonearm
lowering
onto
the
support.
During
run-in
of
the
cam
wheel
into
zero
position
the
roller
(76)
of
the
switching
arm
(78)
run-in
to
the
cut-out
provided
on
the
cam
wheel
and
operate
the
power
switch
(106).
Adjustment
points
Power
fuse
After
removing
both
fastening
screws
and
detaching
power
secti-
on
cover
the
fuse
(102)
on
the
power
plate
(101)
can
be
replaced.
Tonearm
set
down
point
The
set
down
point
of
the
tonearm
can
be
altered
with
the
ec-
centric
bolt
(172).
If
the
stylus
sets
down
too
far
in
or
out
on
the
record
turn
the
eccentric
bolt
(172)
correspondingly
right
or
left.
Shut-off
point
The
shut-off
point
(shut-off
range
records
116
—
122
mm
ф)
can
be
altered
with
the
eccentric
(E)
on
the
segment
(124).
Tonearm
lift-off
height
The
tonearm
lift-off
height
(during
automatic
operation)
can
be
altered
with
adjusting
sleeve
(177).
Withdraw
power
plug.
Un-
lock
tonearm.
Rotate
cam
wheel
(25)
out
of
zero
position
until
tonearm
has
reached
its
highest
point.
The
tonearm
should
be
approximately
5
mm
above
the
tonearm
support
stop
(Fig.
16).
If
necessary,
turn
adjusting
sleeve
(177)
to
left
or
right.
Fig.
13
Fig.
14
Fig.
15
Fig.
16