Denon DN-C680 Service Manual

SERVICE MANUAL
CD PLAYER
For U.S.A., Canada &
Europe model
16-11, YUSHIMA 3-CHOME, BUNKYOU-KU, TOKYO 113-0034 JAPAN
X0179V.01 DE/CDM 0308
Some illustrations using in this service manual are
slightly different from the actual set.
●
Please use this service manual with referring to the
operating instructions without fail.
●
●
本文中に使用しているイラストは、説明の都合上現物
と多少異なる場合があります。
●
修理の際は、必ず取扱説明書を参照の上、作業を行っ
てください。
サービスをおこなう前に、このサービスマニュアルを
必ずお読みください。本機は、火災、感電、けがなど
に対する安全性を確保するために、さまざまな配慮を
おこなっており、また法的には「電気用品安全法」に
もとづき、所定の許可を得て製造されております。
従ってサービスをおこなう際は、これらの安全性が維
持されるよう、このサービスマニュアルに記載されて
いる注意事項を必ずお守りください。
注 意
SUPPLEMENT
MODEL DN-C680
Ver. 1
We have two version of DN-C680. The new version of
DN-C680 is replaced discontinued parts of the old ver-
sion. (CD mechanism, microprocessor and D/A conver-
ter etc.)
Serial number of new version are renumbered from
*****50001.
This service manual is supplement for new version of
DN-C680 and only mentioned difference between old
and new version. So, please refer to previously issued
service manual of DN-C680 when servicing.
DN‑C680には新旧の2つのバージョンがあります。
旧 バージョン( 製造番号*****50000以前)で生産中止に
なった部品(CDメカ、マイコン等)を置き換えたものが
新バージョン (製造番号*****50001以降)です。
本書は、
新バージョンで 変更された内容のみを記載し
ていますので、
サービスの際は本書と共に 既発行のサ
ービスマニュアル
DN‑C680を ご用意願います。
●
本機の仕様は性能改良のため、予告なく変更すること
があります。
●
新バージョン用の補修用性能部品の保有期間は、製造
打切後8年です。
For purposes of improvement, specifications and
design are subject to change without notice.
●

Denon DN-C680 Specifications

General

Playback	CD, CD-R, CD-RW
Type	CD Player
Dynamic Range	100dB
Total Harmonic Distortion	0.002%
Digital Output	Coaxial
Analog Output	RCA, XLR
Remote Control	Yes

Summary

Service Manual Introduction and Safety Precautions

General Safety and Usage Guidelines

Important precautions for safe operation and repair.

Safety Precautions and Repair Guidelines

Leakage Current and Laser Safety Checks

Procedures for leakage current and laser radiation safety.

General Service Precautions

Key safety guidelines for servicing and maintenance.

Importance of Specified Parts

Guidelines on using designated parts for safety and performance.

System Block Diagram

Main Unit and Peripheral Connections

Servo System Confirmation and Adjustment

Electrostatic Discharge Precautions

Precautions against electrostatic damage during servo confirmation.

Servo Confirmation Procedure

Step-by-step guide to confirm the servo system.

Service Program Operations

Service Program Functions and Contents

Detailed descriptions of service program functions and their actions.

Service Program Error Codes

Error Code Table for Heat Run/Chucking Test

Table of error codes encountered during specific service functions.

Error Indication and Data

Audio Circuit Adjustment

Output Level Adjustment Procedure

Steps to adjust the audio output level.

Display Grid Assignment

Anode Connection Mapping

Parts List Information

Parts List Guidelines and Component Identification

Wiring Diagram

Inter-Unit Connection Overview

Schematic Diagram Notes and Warnings

Critical Component and Safety Warnings

Warnings about critical parts and safety precautions for diagrams.

Circuit Schematics

Main Unit and Digital I/F Unit Schematics

Schematic for the main unit and digital interface unit.

Digital I/F Unit and Interface Schematics

Detailed schematics for the digital interface unit and its connections.

Audio Unit Schematics

Detailed schematic for the audio unit and its components.

Control and Interface Unit Schematics

Schematics for jog, key LED, FLT, select, and trans units.