Yamaha AVR-S80 Service Manual

The AVX-S80 is composed of the AVR-S80 and the NX-SW80.
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100811
P.O.Box 1, Hamamatsu, Japan
■ CONTENTS
TO SERVICE PERSONNEL .......................................... 2
SYSTEM COMPOSITION / システム構成 ..................... 3
FRONT PANELS ........................................................ 3~4
REMOTE CONTROL PANELS ...................................... 5
REAR PANELS .......................................................... 5~7
SPECIFICATIONS...................................................... 8~9
INTERNAL VIEW ......................................................... 10
AVR-S80 DISASSEMBLY PROCEDURE /
AVR-S80 分解手順 ................................................. 11~13
SW-S80 DISASSEMBLY PROCEDURE /
SW-S80 分解手順 ................................................... 14~15
DSP SELF DIAGNOSIS FUNCTION (DIAG)/
DSP自己診断機能（ダイアグ） ............................. 16~33
DISPLAY DATA ..................................................... 34~35
IC DATA ................................................................. 36~41
BLOCK DIAGRAM ................................................. 42~45
PRINTED CIRCUIT BOARD .................................. 46~53
PIN CONNECTION DIAGRAM .................................... 54
SCHEMATIC DIAGRAM ........................................ 55~60
PARTS LIST ........................................................... 61~82
REMOTE CONTROL.............................................. 83~84
Parts List for Carbon Resistors ................................ 85
SERVICE MANUAL
HOME THEATER SYSTEM
AVR-S80/NX-SW80
AVR-S80/NX-SW80
IMPORTANT NOTICE
This manual has been provided for the use of authorized YAMAHA Retailers and their service personnel.
It has been assumed that basic service procedures inherent to the industry, and more specifically YAMAHA Products, are already
known and understood by the users, and have therefore not been restated.
WARNING: Failure to follow appropriate service and safety procedures when servicing this product may result in personal
injury, destruction of expensive components, and failure of the product to perform as specified. For these reasons,
we advise all YAMAHA product owners that any service required should be performed by an authorized
YAMAHA Retailer or the appointed service representative.
IMPORTANT: The presentation or sale of this manual to any individual or firm does not constitute authorization, certification or
recognition of any applicable technical capabilities, or establish a principle-agent relationship of any form.
The data provided is believed to be accurate and applicable to the unit(s) indicated on the cover. The research, engineering, and
service departments of YAMAHA are continually striving to improve YAMAHA products. Modifications are, therefore, inevitable
and specifications are subject to change without notice or obligation to retrofit. Should any discrepancy appear to exist, please
contact the distributor's Service Division.
WARNING: Static discharges can destroy expensive components. Discharge any static electricity your body may have
accumulated by grounding yourself to the ground buss in the unit (heavy gauge black wires connect to this buss).
IMPORTANT: Turn the unit OFF during disassembly and part replacement. Recheck all work before you apply power to the unit.

Yamaha AVR-S80 Specifications

General

Type	AV Receiver
HDMI Outputs	1
4K Ultra HD Pass-through with HDCP 2.2	Yes
Bluetooth	Yes
Amplifier Type	Discrete
Input Sensitivity	200mV/47kΩ

Summary

Important Notice

To Service Personnel

Safety and Critical Component Information

Critical components, leakage current, safety warnings, and chemical notices for service personnel.

Remote and Rear Panel Views

Remote Control Panel Layouts

Shows the layout and buttons for the remote controls for different models.

Technical Specifications

AVR-S80 Specifications

Lists detailed technical specifications for the AVR-S80 audio, video, and tuner sections.

NX-SW80 Specifications

Details specifications for the NX-SW80 amplifier, speaker, and general sections.

Product Dimensions

AVR-S80 Dimensions

Provides physical dimensions for the AVR-S80 unit.

AVR-S80 Disassembly Procedure

AVR-S80 Disassembly Procedure (Continued)

Component P.C.B. Removal Steps

Steps for removing various P.C.B.s, tuner, and DSP from the AVR-S80.

SW-S80 Disassembly Procedure

Step-by-Step Disassembly Guide

Comprehensive guide for disassembling the SW-S80, including grille and amplifier unit removal.

DSP Self-Diagnosis Function (DIAG)

DSP Self-Diagnosis Function (DIAG) (Continued)

Overview of DIAG Menu Items

Lists all 15 diagnostic menu items, covering DSP, RAM, Logic, Speaker settings, and more.

Canceling DIAG Procedure

Procedure to cancel DIAG mode and reset settings.

DIAG Menu and Sub-Menu Operation

Explains how to navigate and operate the DIAG menus and sub-menus.

Starting and Operating DIAG Mode

Instructions on how to start DIAG, enter protection cancel mode, and operate the menus.

DIAG Start Display Information

Details the display information shown when the DIAG mode starts.

Functions and Settings in DIAG Mode

Lists functions available and initial settings used when starting the DIAG mode.

DIAG Menu Details

DIAG Menu Details (Continued)

IC Data

IC1: M30624FGAFP (MAIN P.C.B.) Details

Provides detailed data and port assignments for the main CPU IC.

IC Data (Continued)

IC600: YSS938 (DSP P.C.B.) Details

Lists detailed data and pin functions for the YSS938 DSP IC.

Block Diagrams

Block Diagrams (Continued)

Printed Circuit Board Layouts

Printed Circuit Board Layouts (Continued)

SW-S80 Printed Circuit Board Layouts

SW-S80 Printed Circuit Board Layouts (Continued)

AVR-S80 Schematic Diagram (MAIN)

AVR-S80 Schematic Diagram (DSP)

AVR-S80 Schematic Diagram (SUB)

SW-S80 Schematic Diagram 1/3 (5ch AMP Block)

SW-S80 Schematic Diagram 2/3 (Woofer Amp Block)

SW-S80 Schematic Diagram 3/3 (Power Supply Block)

Parts List

Electrical Parts List

Lists electrical components with part numbers, descriptions, and remarks.

Parts List (Continued)

AVR-S80 Chip Resistors List

Lists carbon chip resistors with values and part numbers.

SW-S80 POWER AMP P.C.B. Parts List

Lists components for the SW-S80 POWER AMP P.C.B.

Parts List for Carbon Resistors

Lists carbon resistors with their 1/4W and 1/6W part numbers.