Denon AVC-3890 User Manual

SERVICE MANUAL
MODEL AVR-3805
AVC-3890
AV SURROUND RECEIVER / AMPLIFIER
16-11, YUSHIMA 3-CHOME, BUNKYO-KU, TOKYO 113-0034 JAPAN
X0197V.02 DE/CDM 0403
For Europe & Asia model
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。
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。
Please use this service manual with referring to the
operating instructions without fail.
Some illustrations using in this service manual are
slightly different from the actual set.
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。
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。
補修用性能部品の保有期間は、製造打切後8年です。
注 意
For purposes of improvement, specifications and
design are subject to change without notice.

Denon AVC-3890 Specifications

General

Brand	Denon
Model	AVC-3890
Category	Stereo Receiver
Language	English

Summary

General Information and Safety

General Precautions

Notes on reading the manual, specification changes, and illustration differences.

Safety Precautions

Critical safety checks for leakage current and line-to-chassis resistance.

Servicing Cautions

Procedures for receiver initialization and important servicing warnings.

Adjustments and System Diagrams

Audio Section Adjustment Procedures

Detailed steps for adjusting audio idling current and channel voltages.

Video Section Adjustment Procedures

Steps for adjusting component video Y, Cb, and Cr signal levels.

Signal Level Diagrams

Visual representation of signal levels across various audio channels.

Test Mode Operations

Guide to using test mode for checking system status and errors.

Component and PWB Information

Semiconductor and IC Terminal Functions

Pin assignments and functions for key semiconductors and ICs.

Printed Wiring Board (PWB) Layouts

Component and foil side layouts for major circuit boards.

Parts List Interpretation Guide

Explanations for resistor and capacitor coding conventions.

Parts Lists

Power Unit Parts List

Detailed part numbers for the power unit assembly.

Exploded View and Packing Lists

Illustrated parts breakdown and packing materials information.

Schematic Diagrams

Wiring Diagram Overview

Visual representation of interconnections between unit modules.

Schematic Diagram Notes

Important information on symbols, values, and schematic conventions.

Major Schematic Diagram Sections

Detailed circuit schematics for audio, digital, video, and control units.