Dual CS 650 RC - Service Manual

Dual
Edition
February
1980
Service
Manual
CS
650
RC
Technical Data
Measured values
Current
Line voltage
Drive
Power input
Power consumption
Time from start to rated
speed
Platter
Platter speed
Pitch control
Speed
control (monitoring)
Sensitivity of the illuminated strobe
(for 0.1 % speed deviation)
Total wow and flutter
(according to DIN 45
507)
Rumble
(according to DIN
45500)
Tonearm
Effective length
of tonearm
Offset
angle
Tangential
tracking error
Tonearm bearing friction
(related
to stylus
tip)
Stylus
pressure
Cartridges
Weight
typical values, Rumble and wow
and flutter values obtained with test record.
AC 50 to 60 Hz.
110 to 125 V,
220 to 240 V
electronically-controlled
direct-drive system, Dual EDS 500
Motor at playing operation, approximately 2
watts < 50 mW
220
V.50 Hz: at start 35 mA at play 15
mA
110 V 60 Hz: at start 65 mA at
play approximately 25 mA
2—
2.5 s at
331/3
rpm
non-magnetic, 1.4 kg, 304 mm diameter
33 1/3 and 45 rpm, electronically adjustable
Separate for
both speeds, each adjustable by means of variable
resistor,
range of
regulation: 10%
with
illuminated stroboscope for platter speeds 33
1/3 and 45 rpm, 50 or 60 Hz.
6 division markings
per minute at 50 Hz,
7.2 division markings per minute at 60 Hz.
(German Industry
Standard)
± 0.05 %
WRMS
±
0.03
%
Unweighted:
50 dB
Weighted: 75 dB
Torsionally rigid tubular aluminum
tonearm in low-friction four-point gimbal suspension.
221
mm
24 0 4'
0.16
0 /cm
vertical
0 .
07
mN
(0.007
g)
horizontal 0.15 mN
(0.015 g)
from 0 to 30 mN (0 to 3 g) infinitely variable with 1 mN- (1/10 g) calibrations
from 0 to 15 mN (0 to 1.5 g) operable from 2.5 mN (0.25 g) stylus pressure upwards.
with 1/2 inch screw-type attachment. These can be fitted with the special accessories
no. 262 186 which can be obteined from trade dealers.
ca. 7,4 kg
Download from www.dual.de
Not for commerical use

Dual CS 650 RC Specifications

General

Speeds	33 1/3, 45 RPM
Wow and Flutter	< 0.1%
Effective Tonearm Length	230 mm
Stylus	Elliptical
Signal-to-noise ratio	> 70 dB
Drive	Belt Drive
Platter	Aluminium
Frequency Response	20 Hz - 20 kHz
Tracking force	1.5 - 2.0 g

Summary

Technical Data

CS 650 RC Description of Functions

Direct Drive System Dual EDS 500

Motor Electronics Replacement

Procedure for replacing the motor electronic system unit.

Motor Mechanic Replacement

Procedure for replacing the motor mechanic components.

Nominal Speed Setting

Adjusting the platter speeds to their nominal values.

78 RPM Speed Changeover

Instructions for setting the 78 RPM nominal speed.

Stroboscope Speed Check

How to use the stroboscope to check platter speeds.

Pitch Control Adjustment

Adjusting the fine speed control for pitch variation.

Tonearm and Suspension System

Tonearm;Spring Housing Removal

Steps to remove the tonearm or its spring housing.

Tonearm Assembly Removal

Procedure for removing the entire tonearm assembly.

Tonearm Bearing Adjustment

Adjusting the horizontal and vertical tonearm bearings.

Tonearm Operation and Controls

1;2 Inch Cartridge Fitting

Instructions for fitting a standard 1/2 inch cartridge.

Anti-Skating Device

Details on the anti-skating compensation mechanism.

Cue Control Operation

How to use the automatic tonearm lift and lower control.

Cue Control Plate Replacement

Steps for replacing the cue control plate.

Muting Switch Function

Explanation of the muting switch for silent operation.

Automatic Start Operation

Sequence of operations for automatic start.

Manual Start Operation

Procedure for manually initiating playback.

Continuous Play Mode

How to set and use the continuous play mode.

Stopping Operation

Procedure for stopping playback and returning the tonearm.

Automatic Shut-off Function

Explanation of the automatic record end shut-off mechanism.

Adjustment Points

Tonearm Set-Down Point Adjustment

Adjusting the tonearm's automatic set-down position.

Automatic Shut-off Point Adjustment

Adjusting the location where automatic shut-off occurs.

Tonearm Lifting Height Adjustment

Adjusting the height the tonearm lifts during cueing.

Pull Magnet Adjustment (Start;Stop)

Adjusting the stroke of the start/stop pull magnets.

Pull Magnet Adjustment (Lift)

Adjusting the stroke of the lift pull magnet.

Replacement Parts and Lubrication

Replacement Parts List

List of replacement part numbers and descriptions.

Lubricating Instructions

Guidance on lubricating various points of the unit.