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Denon DCD-735 Service Manual

Denon DCD-735
36 pages
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Denon DCD-735 Specifications

General IconGeneral
TypeCD Player
Disc formatCD, CD-R, CD-RW
Frequency response2 Hz - 20 kHz
Dynamic range100 dB
Total harmonic distortion0.002%
Digital converter24-bit/192kHz
Digital outputsOptical, Coaxial
Output2.0V

Summary

DENON DCD-735/635 Service Manual

OPERATING INSTRUCTIONS

Control Panel Layouts

Diagrams and labels for front, rear, and remote control units.

Safety and Usage Precautions

Critical safety warnings and important usage guidelines.

PRODUCT FEATURES AND FRONT PANEL CONTROLS

Key Audio and Playback Features

Highlights advanced audio tech, digital filter, servo system, and convenience.

Front Panel Controls and Display

Explains power, disc handling, listening controls, display, and sensor.

REMOTE CONTROL FUNCTIONS

Playback and Track Selection

Covers play, pause, stop, search, programming, and track selection.

Additional Remote Operations

Details Auto Space, Time Mode, and Dimmer functions.

ADVANCED PLAYBACK MODES

Specific Track and Programmed Play

How to play specific tracks or programmed sequences.

Repeat and Search Operations

Details repeat playback and manual search operations.

TIMER PLAYBACK AND REMOTE OPERATION

Timer-Controlled Playback Setup

How to set up playback using an external timer.

Remote Control Usage Details

Inserting batteries, directions for use, and operational notes.

INSTALLATION, TROUBLESHOOTING, AND SPECIFICATIONS

Installation and Safety Precautions

Advice on placement and cable management to avoid interference.

Troubleshooting and Specifications

Lists common problems, solutions, and technical details.

DISASSEMBLY PROCEDURES

Loader and Top Cover Removal

Step-by-step guide to remove loader panel and top cover.

CHASSIS DISASSEMBLY

Front and Rear Panel Removal

Instructions for detaching the front and rear panels.

SERVO CONFIRMATION METHOD

Service Program Activation

Procedure to enter the service mode for servo checks.

Servo Operation Functions

Details button functions within the service program.

SERVO CONFIRMATION DETAILS

Equipment and Tracking Offset Check

Lists required equipment and procedure for tracking offset check.

SERVO GAIN AND SIGNAL LEVEL CHECKS

Focus and Tracking Gain Confirmation

Steps to confirm focus and tracking gain automatic adjustment values.

Focus BIAS, EF BALANCE, and HF Level

Procedures for checking Focus BIAS, EF BALANCE, and HF level.

HEAT RUN TEST AND PICK-UP HANDLING

Heat Run Mode Testing Procedures

Steps to perform the heat run test and understand error messages.

Laser Pick-Up Replacement Criteria

Criteria for deciding if a pick-up needs replacement.

FOCUS SEARCH FUNCTION DIAGNOSIS

Focus Search Procedure and Troubleshooting

Steps to diagnose focus search issues and potential causes.

FOCUS ERROR SIGNAL (VFE) ANALYSIS

VFE Measurement and PU Lens Care

Procedure to measure VFE, clean lens, and identify PU issues.

TRACKING ERROR SIGNAL (VTE) ANALYSIS

VTE Measurement and PU Lens Care

Steps to measure VTE, clean lens, and identify PU issues.

HF LEVEL (VHF) ANALYSIS

VHF Measurement and PU Lens Care

Procedure to measure VHF, clean lens, and identify PU issues.

SEMICONDUCTOR INFORMATION

BA6392FP IC Pinout and Function

Detailed pin configuration and function for BA6392FP IC.

CXD2545Q IC Pinout and Function

HD6433724-E64F IC Pinout and Function

ADDITIONAL IC AND COMPONENT DETAILS

Microcomputer and Audio ICs

Pinouts for µPC4570C, PCM61P-L, SM5845AF.

Logic IC and Remote Receiver

Pinouts for TC74HCU04AP and SBX1910.

TRANSISTOR AND DIODE IDENTIFICATION

Common Transistor Types

Visual identification of common transistors used in the unit.

Common Diode Types

Visual identification of common diodes used in the unit.

PARTS LISTING NOTES AND GUIDELINES

Resistor and Capacitor Coding Interpretation

Explains how to interpret resistor and capacitor part number codes.

PARTS LIST: CD P.W.B. UNIT ASS'Y

ADDITIONAL PARTS LISTINGS

PRINTED WIRING BOARD LAYOUTS

CD Mechanism Unit PWB Layouts

Diagrams showing component placement on mechanism boards.

MAIN AND SUB-BOARD PWB LAYOUTS

CHASSIS AND CABINET EXPLODED VIEW

Main Chassis Component Assembly

Diagram showing major chassis parts and their assembly.

PARTS LIST FOR EXPLODED VIEWS

Mechanism Unit and Accessories List

List of parts for the CD mechanism unit and included accessories.

MECHANISM AND PICK-UP EXPLODED VIEWS

CD Mechanism Unit Components

Exploded view of the CD mechanism unit components.

Optical Pick-Up Unit Components

Exploded view of the optical pick-up unit components.

WIRING DIAGRAMS

Key Unit Interconnections

Diagram showing connections between mechanism, main board, and other units.

SCHEMATIC DIAGRAM (1/3)

Digital Servo and Signal Processor Circuits

Schematic of the digital servo and signal processing section.

SCHEMATIC DIAGRAM (2/3)

Main P.W.B. and Display Unit Circuits

Schematic of main board and display unit circuits.

SCHEMATIC DIAGRAM (3/3)

H/P Jack and Power Unit Circuits

Schematic of headphone jack and power supply circuits.

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