Dual 622 Service Manual

Fig. 3
Netzteil
Supply
unit
Bloc
secteur
Generator
Generateur
Fig. 4
Drehzahlregler /R
19
Platter speed switch
/R 19
Motor
Commutateur de vitesse/R 19
Moteur
R16
14
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EIN
R15
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T3
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es ü6• 1
Netatrafo
Mains transformer
Transformateur de
räseau
II
901„.
1
50
rnAT I 53rnAml)
e e 43 ,
0 220V 1105
Fig. 5
DgeMANNNIter
Plerte. Nmed
swach
Cmnmalen de vital.
N meatl
NN-
Motor
Motor
Moteur
to.
Glimmlampe
Glirn lamp
Lampe ä
effluves
Direct
Drive System Dual
EDS 500
For repair of the Dual
EDS 500 special tools and measuring
means are
required. Work on the motor or motor
electronics
system should,
therefore, only be carried out by
an authorized
Dual service
station.
Replacement of motor electronics
1. Extract unit plug from power line. Lift off platter 4. Bring
unit into head
position.
2. Remove machine screws 112 and cover of power part.
3. Unsolder connecting leads to motor and generator. Open
twists of holding angle 150 with pliers. Remove
motor
electronics 152, screws 151 and holding angle
150.
4. Pull off motor electronics 152 system from motor 18 carefully.
5. Fix replacement
motor electronics.
Solder connecting cables see connection diagram Fig. 5.
6. Slide
cover over power part and fix it by means of machine
screws 112.
7. With the unit in
normal position connect lt to power line.
Switch on unit and check power
consumption on operation:
220
V/50
Hz approx. 15 mA
110
V/60
Hz approx. 25 mA
Check nominal
speeds. If necessary, readjust as described
belovv.
Replacement of motor mechanics
1. Extract
unit plug from power line. Remove
platter 4.
2. With
the unit in head position remove machine
screws 174
and washers 173. Pull off motor electronics board 172
together with cover 175 carefully from the motor 18.
3. Loosen
connection for operating voltage at het plate 109.
Unsolder connecting leads to speed fine adjustment 129,
rotary switch 5 and the generator. Open
twists of holding
angle 152 with pliers.
4

Dual 622 Specifications

General

Brand	Dual
Model	622
Category	Speakers
Language	English