Dual C 818 User Manual

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Service-Anleitung
Service
Manual
lnstructions
de
Service
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Technische
Daten
(typische
Werte)
Bandgeschwindigkeit
Technical
data
(typical
value)
Tape speed
Garact6ristiques techniques
(valeur
caract6ristique)
Vitesse
de bande 4,75 crn/s
(1
7/B ips)
Kurzzeitige
Geschwindigkeitsschwan-
kungen
flonhöhenschwankungen)
W,R,N/.S,
nach
DIN Aufnahme/Wiedergabe
Wow and
flutter
We
ghted
RN/S
to
D
N for recording/playback
Fluctuations instantan6es de la vitesse
(variations
de
a hauteur
du son)
w.F.t\,4.s.
suivant D N enregistremenVlecture
+
0,045 %
+
4,12
a/o
Ubertragungsbereich
(bezogen
auf DIN-Toleranzfeld)
Fe-Band
CrOr-Band
Beineisen-Band
Frequency response
(ref.
to DIN to
erances)
Standard
Fe tape
CrO2 tape
Pure metal tape
Bande
passante
(ranrende
ä
la
plage
de tol6rance D N)
Bande Fe
Bande
CrO2
Bande fer
pur
25
-
16000 Hz
25
-
16000 Hz
25
-
17 OOO Hz
Ruhegeräuschspannungsabstand
mit Dolby
NR
Fe-Band
CrO2-Band
Beine
sen-Band
Signal-to-noise
ratio
with Dolby NR
Standard
Fe tape
CrO2 tape
Pure meta tape
Rapport signal/bruit
avec
Dolby NR
Bande Fe
Bande
CrO,
Bande
fer
pur
Dolby NR
BC
64 dB 71 dB
64 dB
71
dB
67 dB 74 dB
Ubersprechdämpfung
(bei
1000
Hz)
zwischen
zusammengehöngen Kanä en
zwischen
Kanälen n
Gegenrichtung
Ghannel separation
(a1
1000 Hz)
between stereo channes
in
opposte
directron
Diaphonie
(ä
1000 Hz)
en
sens
stdreo
en sens
inverse
40
dB
70
dB
Löschdämpfung
bel 1000 Hz
Erasure at 1000 Hz
Att6nuation d'effacement ä 1000 Hz 70 dB
Oszillator-Frequenz
(GegentaKoszillator)
Oscillator
(push/pul
oscillator)
Fr6quence de l'oscillateur
(osci
lateur
push-pul
)
1
05 kHz
Eingänge
(Empf
ndllchkeit für
O dB)
M krofon
(1/4"
Koaxia-Buchse)
Receiverl/erstärker
(DlN-Buchse)
Rebeivertuerstärker
(RCA-Buchsen)
lnputs
(sensivity
at 0 dB)
Nilicrophone
(1/4"
coaxial
jack)
Receiver/ampl f er
(D
N connector)
Receiver/ampl
fier
(RCA
iacks)
Entr6es
(sensibilite
pour
0 dB)
Micro
(prise
coaxiale
de
1/4")
Ampii-tuner/amplificateur
(prlse
DIN)
Amp
iluner/amp
ificateur
(pr
se RCA)
0,4
mV/]0 kOhm
O,25 mV/ 2,5
kohrn
80 mV/60 kohm
Ausgänge
Receiverl/erstärker
(D
N-Buchse)
Receiver,^/erstärker (RCA-Buchsen)
Kopfhörer
(1/4"
Koaxial-Buchse)
Outputs
Receiver/amp
ifier
(DlN
connecto0
Receiver/amp ifier
(RCA
jacks)
Headphones
(1/4
coaxial
iack)
Sorties
Ampli-tuner/amp ificateur
(prise
D N)
Ampli{uner/amplificaleur
(prises
RCA)
Casque d'6coute
(prise
coaxiale de l/4")
550 mV/8 kOhm
560
mV/3 kohm
4-2000
Ohm
Umspulzeit
für
C 60 Cassette
Fast winding time
for
C 60
cassettes
Temps de rebobinage
pour
cassette C 60
95 sec.
Netzspannung
Line voltage
Tension
secteur
Europa Ausf. 230 V
USA/Kanada Ausf. 1 15
Netzfrequenz
Line frequency
Fr6quence secteur 50/60 Hz
Leistuflgsaufnahme
Power requirement Consommation
25 Watl
Dual
920
895
7 742
St. Georgen /Schwarzwdd
Copyright by Dual01 85
Postfacn 144

Dual C 818 Specifications

General

Brand	Dual
Model	C 818
Category	Cassette Player
Language	English

Summary

Technical Data and Specifications

Service Adjustment Procedures

Tape Transport and Speed Calibration

Procedures for aligning tape path, speed, and tension.

Playback and Recording Level Calibration

Adjusting playback levels, recording levels, and bias settings.

Oscillator and RF Circuit Calibration

Details on calibrating the oscillator and RF trap circuits.

Tape Sensor and Position Adjustments

Calibration for tape sensor and R/P head position.

Circuit Diagrams and Board Layouts

Alignment Position Diagrams

Visual guide to component locations for calibration.

Wiring Diagrams

Detailed electrical schematics for component interconnections.

Circuit Board Layouts

Layouts for main, LED, control, and key boards.

Component Information and Replacement Parts

Integrated Circuit (IC) Pinouts

Pin assignments and functional diagrams for integrated circuits.

Exploded Views

Visual assembly guides for internal components.

Replacement Parts List

Comprehensive list of all replaceable parts with article numbers.