Dual 601 - Page 3

Contents
Page
Pick
-up Connection
Diagram
2
Specification
3
Motor and Drive
4
Replacement
of
Motor
Pulley
4
Stroboscope
5
Pitch Control
6
Nominal speed is at the edge of the control range of the pitch/control
6
Platter does not run when unit is connected to power line and start switch
operated
6
Platter does not reach
required speed
6
Pick -up head not parallel to
platter
6
Tonearm and Tonearm Bearing
7
Anti-skating
Device
8
Stylus skips
8
Vertical
tonearm movement shows resistance during set down
8
Tonearm Control
9
Cue Control
9
Replacement of
Lift
Tube
10
Tonearm does not set down at the edge of the record
10
Tonearm
does not set down on record after
operating cue control
10
Tonearm lowers onto record too quickly when cue
control is operated
10
Tonearm returns
to rest after manual set down
immediately
after the
platter starts to turn
Starting
11
Manual Start
11
Short Circuiter
11
Continuous play
11
Stopping
12
Shut-off
12
Platter remains stationary after automatic set-down of tonearm on record
12
Tonearm remains suspended just
outside the 17.5 cm record after adjustment of
the tonearm set-down point for 30 cm records
13
Tonearm is hindered in its horizontal motion during automatic
Operation
13
Tonearm moves with tracking force and anti-skating scale in 0
position
13
During automatic operation of tonearm disturbing noises are perceptible
13
No
reproduction
13
Motor does not shut off when tonearm sets down on rest
13
Acoustic
Feedback
1.3
Spare parts with
Exploded drawings
14 -
19
Lubricating Instructions
20
Specification
Current
Type
AC
50,60 Hz,
selected
by exchanging
drive pulley
Line
Voltages
110— 130 volts, 220 — 240 volts
Motor and
Drive 8-pole/synchronous motor with
belt drive
system
Power
Consumption approx. 10 watts
Current
Consumption
with
220V
50 Hz
approx. 72
mA with
110 V 60 Hz approx. 135 mA
Platter
Non-magnetic, dynamically-balanced,
detachable, 1,3 kg, 305 mm dia
Platter
Speeds
33
1/3 and 45
rpm, automatic tonearm
lowering coupled
to speed change
Pitch
Control
Range of
adjustment approx. 1
semitone (6 %) at both platter
speeds
Speed Check
with light stroboscope for platter
speeds of 33 1/3, adjustable for 50 or 60
Hz
Overall
Speed
Variation
(assessed
in accordance
with
DIN 45
507) <
± 0.08
Signal-to-Noise
Ratio
Rumble weighted
signal-to-noise ratio
>63 dB
Rumble
unweighted signal-to-noise ratio
>42 dB
(in
accordance with DIN
45
500)
Tonearm
Torsion resistant,
tubular
aluminum tonearm
in
universal
four-point
gimbal
suspension
Tonearm
Bearing
Friction
vertical <0.007 p
(related to
stylus
point) horizontal <0.015 p
Pick
-up
Head
Detachable, suitable tor all pick -up
cartridges with Dual catch
mounting and
1/2"
mounting and a deadweight
of 2—
10 g
(including mounting
material)
Tracking
Force
0
—3
p continuously variable, with
1/10 p calibration in the range from
0 — 1.5 p, reliable as from 0.25 p tracking force
Weight
approx.
5.3 kg
For dimensions
and cutout refer to Installation
lnstructions
3