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Yamaha RX-V483/HTR-4071 User Manual

Yamaha RX-V483/HTR-4071
153 pages
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SERVICE MANUAL
AV RECEIVER
RX-V483/HTR-4071
Note:
When the DIGITAL P.C.B. or IC23 on DIGITAL P.C.B. is replaced, this unit will display Internal Error and will
not operate properly. The model name and serial number MUST be written to the backup IC (EEPROM: IC23 on
DIGITAL P.C.B.) to have proper operation. (For detailed procedure, refer to related Service News or Service Bulletin.
Or contact your local Yamaha representative.)
注意:
DIGITAL
P.C.B. または DIGITAL P.C.B. IC23 を交換すると、“
Internal Error が表示されて本機が正常に動作しな
くなります。正常に動作させるために、モデル名とシリアル番号をバックアップ ICEEPROMDIGITAL P.C.B.
IC23)へ書き込む必要があります。(詳しい手順は、関連するサービスニュース、または技術報告を参照してくださ
い。もしくはヤマハのサービスセンターまでご連絡ください)
CONTENTS
TO SERVICE PERSONNEL ........................................... 2
FRONT PANELS ............................................................ 3
REAR PANELS .............................................................. 4
REMOTE CONTROL PANEL ......................................... 9
SPECIFICATIONS / 参考仕様 ...................................... 10
INTERNAL VIEW .....................................
.................... 14
SERVICE PRECA
UTIONS / サービス時の注意事項 .... 14
DISASSEMBLY PROCEDURES / 分解手順 ................ 15
UPDATING FIRMWARE /
ファームウェアのアップデート ................................. 20
SELF-DIAGNOSTIC FUNCTION /
ダイアグ(自己診断機能) .......................................... 24
POWER AMPLIFIER ADJUSTMENT /
パワーアンプ調整 ...................................................... 68
DISPLAY DATA ...........................
................................. 69
IC DAT
A ........................................................................ 72
BLOCK DIAGRAMS ..................................................... 83
WIRING DIAGRAMS .................................................... 86
PRINTED CIRCUIT BOARDS ...................................... 88
PIN CONNECTION DIAGRAMS ................................ 102
CIRCUIT DIAGRAMS ....
............................................. 103
REPLACEMENT PAR
TS LIST ....................................115
REMOTE CONTROL .................................................. 138
FIRMWARE UPDATING PROCEDURE ..................... 141
ファームウェア更新手順 ............................................ 147
101388
'17.04
RX-V483/HTR-4071
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Yamaha RX-V483/HTR-4071 Specifications

General IconGeneral
Channels5.1
Frequency Response10 Hz - 100 kHz
Total Harmonic Distortion (THD)0.09%
HDMI Input4
HDMI Output1
HDMI Pass-throughYes
Audio Return ChannelYes
Digital Audio Input (Optical)1
Digital Audio Input (Coaxial)1
Analog Audio Input4
Subwoofer Output1
Phono InputYes
Speaker Output5
FM/AM TunerYes
Wi-FiYes
BluetoothYes
Front AV Input1
USB Input1
AirPlayYes
Power Output (8 ohms)80 W
Rated Output Power (1kHz, 1ch driven)100 W
Rated Output Power (20Hz-20kHz, 2ch driven)80 W
Supported Audio FormatsDolby Digital, Dolby Digital Plus, Dolby TrueHD, DTS, DTS-HD Master Audio, MP3, WMA, MPEG-4 AAC

Summary

Important Service Notes

Internal Error Handling and Model Name/Serial Number Writing

Critical steps when replacing DIGITAL P.C.B. or IC23 to avoid "Internal Error".

To Service Personnel

Critical Components Information

Information on components marked with ⚠ requiring exact replacement parts for safety.

Leakage Current Measurement

Procedure for verifying insulation and measuring AC leakage current on 120V models.

Lead-Free Solder Information

Recommended types of lead-free solder and caution regarding melting points.

Front Panel Overview

Rear Panel Connectivity

Remote Control Panel Layout

Technical Specifications

Audio Specifications

Detailed parameters for audio output, frequency response, distortion, and tone controls.

Video Specifications

Details on video signal types, levels, and signal-to-noise ratio.

Tuner Specifications

Tuning range and sensitivity for FM and AM tuner sections.

General Specifications

Power supply voltage, power consumption, dimensions, and weight.

Internal Component Overview and Safety

Internal View Diagram

Illustration showing the top and front views of internal PCBs and major components.

Service Safety Precautions

Critical safety measures, including high voltage warnings and capacitor discharging procedures.

Disassembly Procedures

Top Cover Removal

Step-by-step instructions for safely removing the unit's top cover.

Front Panel Unit Removal

Instructions for removing the front panel unit, including screw and connector disconnection.

Network Module Removal

Procedure for removing the network module, including the use of a special tool.

DIGITAL P.C.B. Removal

Steps to remove the DIGITAL P.C.B., including connector and board disconnection.

AMP Unit Removal

Procedure for removing the amplifier unit, detailing screw and connector removal.

Firmware Update Procedures

Confirmation of Firmware Version and Checksum

How to check firmware version and checksum using the self-diagnostic function.

Initializing the Backup IC

Procedure for initializing the backup IC (EEPROM) after firmware update.

Firmware Update via Internet

Step-by-step guide for updating the receiver's firmware using an internet connection.

Check Updated Firmware Version

How to confirm the firmware has been successfully updated to the latest version.

Firmware Update via USB

Step-by-step guide for updating the receiver's firmware using a USB thumb drive.

List of Error Messages

Self-Diagnostic Function Guide

Self-Diagnostic Function Menu Overview

Explanation of the self-diagnostic function's main and sub-menus for inspection.

Starting and Canceling Self-Diagnosis

Instructions on how to start, start in protection cancel mode, and cancel the self-diagnostic function.

Protection Function Handling in Self-Diagnosis

Explains how protection functions work during self-diagnosis and how to handle them.

Detailed Self-Diagnostic Menu Items

Explanations of specific self-diagnostic tests for audio, video, network, and system functions.

Power Amplifier Adjustment

Component and Pin Information

Display Data and Grid Assignment

Information on display data, grid assignments, and anode connections for the unit.

IC Data and Pin Connections

Detailed pin configurations and functions for key ICs like MN864788A.

Detailed Pin Descriptions

Comprehensive list of pin functions for various interfaces like Video, Audio, TMDS, DDC, SPI.

System Block Diagrams

P.C.B. Wiring Connection Block Diagram

Illustrates wiring connections and signal flow between major circuit boards.

Video/Audio Section Block Diagram

Block diagram detailing the signal paths for video and audio processing.

Power Supply Section Block Diagram

Block diagram showing the power supply distribution to various system components.

Printed Circuit Board Layouts

DIGITAL (Side A)

Visual diagram showing component layout on the DIGITAL P.C.B. (Side A).

DIGITAL (Side B)

Visual diagram showing component layout on the DIGITAL P.C.B. (Side B).

OPERATION Board Layouts

Visual diagrams showing component layouts for various OPERATION boards (Side A).

Circuit Diagrams

Digital Section Circuit Diagrams

Detailed schematics for the digital processing and interface circuits.

Power Supply Section Circuit Diagram

Schematic illustrating the power supply circuitry, including transformers and regulators.

Main and Audio Section Circuit Diagrams

Schematics for main amplifier stages, audio inputs, and selector circuits.

Replacement Parts List

Electrical Component Parts

List of electrical components, including abbreviations and part numbers.

Digital Section Parts

Detailed list of digital section components with part numbers, descriptions, and ratings.

Operation Section Parts

List of replacement components for the operation sections.

Main Section Parts

List of replacement components for the main amplifier sections.

Resistor Values and Part Numbers

Comprehensive table of carbon resistor values and corresponding part numbers.

Overall Assembly Diagrams

Accessories and Service Tools

List of included accessories and specialized tools for service.

Remote Control Details

Schematic and Panel Layout

Schematic diagram and physical layout of the remote control unit.

Key Code Layout

Table mapping key numbers and names to their respective codes and functions.

Troubleshooting Guide

Error Messages During Update

Solutions for errors encountered during firmware update, including network and USB issues.

Firmware Update Issues

Steps to recover from issues like no power after update or error confirmation.

Remote Control Malfunction

Troubleshooting steps for when the remote control stops working, focusing on Advanced Setup settings.

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