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Denon DRA-265R Service Manual

Denon DRA-265R
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Denon DRA-265R Specifications

Amplifier Section IconAmplifier Section
continuous power output55 W + 55 W (4 ohms, 1 kHz)
total harmonic distortion0.03% (-3 dB at rated output, 8 ohms)
frequency responsePHONO RIAA Standard Curve 20 Hz ~ 20 kHz + 0.5 dB
Tuner Section IconTuner Section
receiving range [FM]87.5 ~ 108 MHz
usable sensitivity [FM]0.9 pV (10.3 dBf)
signal to noise ratio [FM MONO]82 dB
General Specifications IconGeneral Specifications
power supplyAC 230 V 50 Hz
power consumption104 W
dimensions434 mm (W) x 119 mm (H) x 306 mm (D)
Remote Control Unit IconRemote Control Unit
remote control systemInfrared pulse system
power supply3V DC Two size “AA” (R6) dry cell batteries
external dimensions60 mm (W) x 175 mm (H) x 18 mm (D)

Summary

Safety and Installation Precautions

Safety Warnings

Important warnings on electric shock, fire, and moisture.

Installation Guidelines

Instructions for proper unit placement and clearance.

Usage and Compliance

General Usage Notes

Key points for operating the receiver safely and effectively.

Included Accessories

Checklist of items supplied with the main unit.

Declaration of Conformity

Manufacturer Compliance Statement

Statement confirming adherence to technical regulations.

Connections and Wiring

Panel Terminal Connections

Diagrams and descriptions of all rear panel input/output terminals.

Speaker and Antenna Setup

Guidelines for connecting speakers and installing antennas.

Connection Best Practices

Important notes and precautions for making audio connections.

Control Panel and Functions

Front Panel Controls

Detailed explanation of buttons, knobs, and their functions.

Display Indicators

Explanation of the meaning of various display indicators.

Receiver Operation

Station Presetting and Recall

How to store and retrieve radio stations using memory functions.

Station Name Input

Instructions for assigning custom names to radio stations.

Remote Control Operation

Remote Unit Overview

Introduction to the RC-174 remote control and its system capabilities.

Battery Installation

Steps for inserting and replacing batteries in the remote control.

Remote Operation Tips

Guidance and precautions for effective remote control usage.

Troubleshooting and Specifications

Problem Resolution Guide

Table to diagnose and resolve common receiver issues.

Technical Performance Data

Detailed specifications for amplifier, tuner, and general performance.

Component Specifications

Specifications for remote control and power unit.

Disassembly Procedures

Top Cover Removal

Steps to safely remove the top cover of the unit.

Panel Disassembly

Procedures for removing the front and rear panels.

Adjustment Procedures

Idling Current Calibration

Detailed steps for adjusting idling current using a voltmeter.

Measurement Diagrams

FM Section Test Setup

Diagram for connecting instruments for FM section adjustment.

Block and Level Diagrams

System Signal Flow

Overall block diagram showing signal paths and modules.

Signal Level Chart

Chart illustrating signal levels for various input types.

Parts List Information

Ordering and Part Notes

Guidance on part availability, ordering, and symbology.

Component Specifications

Details on resistor and capacitor types, codes, and units.

Printed Wiring Board Parts - Main Unit

Main Unit Semiconductors

List of semiconductor components for the main unit.

Main Unit Resistors

List of resistors on the main unit's printed wiring board.

Printed Wiring Board Parts - Main Unit (Cont.)

Main Unit Capacitors

List of capacitors on the main unit's printed wiring board.

Main Unit Other Parts

List of miscellaneous components on the main unit's PCB.

Printed Wiring Board Parts - Tuner Unit

Tuner Unit Semiconductors

List of semiconductor components for the tuner unit.

Tuner Unit Resistors

List of resistors on the tuner unit's printed wiring board.

Printed Wiring Board Parts - Tuner Unit (Cont.)

Tuner Unit Capacitors

List of capacitors on the tuner unit's printed wiring board.

Tuner Unit Other Parts

List of miscellaneous components on the tuner unit's PCB.

Printed Wiring Board Parts - Display Unit

Display Unit Semiconductors

List of semiconductor components for the display unit.

Display Unit Capacitors

List of capacitors on the display unit's printed wiring board.

Display Unit Resistors

List of resistors on the display unit's printed wiring board.

Display Unit Other Parts

List of miscellaneous components on the display unit's PCB.

Printed Wiring Board Patterns

Main Unit (1U-2817) Layouts

Layout diagrams for the main unit's printed wiring boards.

Printed Wiring Board Patterns (Cont.)

Display Unit (1U-2819) Layouts

Layout diagrams for the display unit's printed wiring boards.

Tuner Unit (1U-2818) Layouts

Layout diagrams for the tuner unit's printed wiring boards.

Exploded Views

Chassis and Cabinet Assembly

Exploded diagram of the unit's physical construction.

Parts List by Exploded View

Component Parts List

List of parts corresponding to the exploded view references.

Accessories and Hardware

List of included accessories, screws, and cables.

Wiring Diagram

Unit Interconnection Diagram

Diagram showing how major units are wired together.

Schematic Diagrams

Tuner Unit Schematic

Detailed electronic schematic for the tuner section.

Main Unit Schematic

Detailed electronic schematic for the main unit.

Display Unit Schematic

Detailed electronic schematic for the display unit.

Semiconductor Component Details

Integrated Circuit (IC) Information

Pinouts and function descriptions for key ICs.

Transistor and Diode Identification

Identification and diagrams for transistors and diodes.

Remote Sensor Circuit

SBX1610-52 Sensor Details

Circuit diagram and component information for the remote sensor.

Semiconductor Component Details (Cont.)

Additional IC Pinouts

Further pinout and function details for integrated circuits.

Additional Transistor/Diode Data

More identification and data for transistors and diodes.

Remote Sensor Circuit (Cont.)

SBX1610-52 Component Breakdown

Specific component breakdown for the remote sensor unit.

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