Dual CD 40 - User Manual

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CD
40
Service-Anleitung
Service
Manual
lnstructions
de Service
.
7742
St.
Georgen/Schwaawald
Dual
GmbH
q2,
528 0886
Technische Daten
Meßwerte
=
typische Werte
Technicaldata
Measured values
:
typical values
Caract6ristiques techniques
Valeurs mesur6es
=
valeurs typiques
Froquonzborolch
Frequency respons€
Courbe do r6ponso 5-20000 Hz
+
0,5 dB
Geräuschspannungsabstand
Signal
to noise ratio
Rapport signaYbruit 100d8
Dynamlkber€ich Dynamic
range Dynamique
s5 dB
übersprechdämpfung
(1
kHz) Crosstalk
(1
kHz) Oiaphionie
(1
kHz)
94 dB
Kllrrlaktor
(1
kHz)
Harmonic distortion
(1
ktlz)
Distorsion harmonique
(1
kHz)
0,003
70
Glelchlaufschwa4kungen
Wow and
flutter
Toleranz de vites
r
0,001 %
Ausgangsspannung
(Hochpegelausgang)
Output voltago
Tsnsion de sortie 2V
Max.
programmisrbars
Musiktitel
Max. music title
programming
Titres
de
musique
au max.
programm6
16
D/A Wandler D/A Converter
D/A Convertiss€ur
16 Bit
linear
(Single)
Abtasfüoquonz Pick up froquency
Fr6quence d'pick-up 44,1
kHz
Abtastsystem
Fecording system
Systömo d'snrogistr6mont
3-Strahl-Laser
3-beam optical
pick
up
L6istungsaufnahme Pow6r consumption Consommation 25W
Nefspannung Mains Yoltage
Tenaions secteur
220V
Netzfrequenz
Line
frequency F16quenco s€ctour
50/60
Hz
Postfach
1144
Copyright
by Dual

Summary

Technical Data

Safety and Adjustment

Laser Safety Precautions

Important safety instructions regarding laser radiation.

Drawer and Arm Adjustments

Instructions for adjusting the drawer and record holder arm.

Calibration Prerequisites

Preliminary settings required before calibration.

Alignment Procedures

Focus, Mirror, and Pre-Offset

Alignment steps for focus offset, mirror, and pre-offset.

Gain, PLL, and Tracking

Procedures for aligning gain, PLL, and tracking parameters.

D;A Converter Alignment

Steps for aligning the D/A converter.

Power Supply Schematic

Wiring Diagram

Demodulation Circuitry

Main Board Circuitry (Part 1)

Servo and Control Systems

Focus, Tracking, and Mirror Servo

Circuit diagrams for focus, tracking, and mirror servo systems.

Slider Motor Control

Circuit diagram for the slider motor control.

Motor Drive and Power Circuits

Disc Motor and Tracking Amplifiers

Schematics for disc motor servo and tracking motor power amplifier.

Power Supply Diagrams

Circuit diagrams related to the power supply.

Component Layouts

Power, Handphone, and Keyboard Boards

Layout diagrams for power, handphone, and keyboard boards.

Pickup Board Layout

Layout diagram for the pickup board.

Main Board Component Layout

Key Board and Display Circuitry

Pickup Board Schematic

IR Receiver Circuit

Exploded View and Assembly

Replacement Parts List

Dual CD 40 Specifications