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Marantz 74CD50 01B User Manual

Marantz 74CD50 01B
28 pages
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Marantz 74CD50 01B Specifications

General IconGeneral
BrandMarantz
Model74CD50 01B
CategoryCD Player
LanguageEnglish

Summary

General Safety Precautions

Safety Compliance

Ensures set restoration to original condition using specified parts.

Parts Ordering Information

Parts Order Requirements

Details required information for ordering parts by mail or telex.

Global Parts Distribution

Lists national subsidiaries and agents for parts procurement.

Documentation Overview

Page Numbering Convention

Explains the system of chapter, sequence, and supplementary/replacement page numbering.

Service Procedures and Precautions

Illustrates general, dismounting, mounting techniques, and soldering precautions.

Player Controls and Operation

Front Panel Controls

Details the buttons and indicators on the front of the CD player.

Remote Control Operations

Explains functions operated exclusively via the remote handset.

Technical Specifications and Connections

Rear Panel Connectivity

Describes analog and digital output connections and remote control interface.

Transit Clamp Removal

Instructions for removing transit clamps before player operation.

Technical Specifications

Lists key technical parameters of the compact disc player.

Service Procedures and Tools

ESD Precautions

Details ESD sensitivity and handling precautions for repairs.

Service Disc Hold-Down

Instructions for creating a disc hold-down for service measurements.

Service Tools and Faultfinding

Lists essential service tools and guides for using the faultfinding tree.

Cabinet and Panel Access

Cabinet Disassembly

Step-by-step guide for disassembling the player's cabinet.

Control and Display Panel Removal

Instructions for removing the control and display panel assembly.

Mechanical Component Breakdown

Mechanical Parts Identification

Lists part numbers and descriptions for mechanical components.

Component Identification Diagram

Component Assembly Layout

Diagram showing the arrangement of various player components and their numbers.

Troubleshooting and Signal Analysis

Microprocessor Signal Diagnostics

Details microprocessor signals and their modes for diagnostics.

Laser Supply Check

Procedures and voltage checks for the laser supply circuit.

Laser and Disc Performance Tuning

Laser Current and Focus Adjustment

Procedures for adjusting laser current and focus offset.

Disc Rotation and Track Following

Tests and adjustments for high-speed disc rotation and track following.

Signal Diagnostics and Error Handling

Track Jump and Audio Output Signals

Signal checks for track jumping and audio output issues.

System Error Codes

Lists system errors, their causes, and checks for troubleshooting.

Circuit Testing and Error Codes

De-emphasis Circuit and Measurement

Details the DEEM circuit and specification measurements.

Digital Output and Operating Errors

Covers DOBM digital output and a list of operating error codes.

Wiring Diagrams and Power Section

Main Wiring Diagram

Illustrates the overall wiring connections of the player.

Power Supply and Voltage Adapters

Details power supply circuits and voltage adapter configurations.

System Block Diagrams and Glossary

Servo and Decoding Block Diagram

Shows the functional blocks of the servo and decoding circuitry.

Technical Abbreviations

Defines common abbreviations used in the manual.

Detailed Schematics: Servo

Servo Circuit Schematic

Detailed circuit diagram for the servo control system.

Detailed Schematics: Servo and Decoder Panel

Servo and Decoder Panel Schematic

Circuit diagram for the servo and decoder panel components.

Detailed Schematics: Servo and Decoder Panel (Part 2)

Servo and Decoder Panel Schematic (Cont.)

Continued circuit diagram for the servo and decoder panel.

Detailed Schematics: Decoding Circuits

Decoding Circuit Schematic (Part 1)

Circuit diagram for the first part of the decoding system.

Detailed Schematics: Decoding Circuits (Part 2)

Decoding Circuit Schematic (Part 2)

Circuit diagram for the second part of the decoding system.

Control and Display Circuitry

Control and Display Schematic

Schematic for the player's control and display interface board.

Variable Audio Output Circuit

Variable Line Out Schematic

Circuit diagram for the variable line output stage.

Interconnection Wiring Diagram

Player Wiring Connections

Diagram illustrating wiring between major player sections.

Electrical Parts List: Servo/Decoder

Servo and Decoder Component List

List of electrical components for the servo and decoder sections.

Electrical Parts List: Passive Components

Resistor and Capacitor Catalog

Catalog of resistors and capacitors with part numbers and values.

Electrical Parts List: Control/Display

Control and Display Component List

List of electrical components for the control and display panel.

Electrical Parts List: Semiconductors/Connectors

Semiconductor and Connector Catalog

Catalog of semiconductor devices and connectors with part numbers.

Circuit Diagram Symbols

Electrical Symbol Guide

Explanation of standard symbols used in circuit diagrams.

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