Yamaha S80 User Manual

SERVICE MANUAL
SY
011477
19991101-198000
1.58K-9431 Printed in Japan ’99.11
HAMAMATSU, JAPAN
CONTROL SYNTHESIZER
CONTENTS
SPECIFICATIONS ................................................... 3
PANEL LAYOUT .................................... 4
CIRCUIT BOARD LAYOUT ................. 5
BLOCK DIAGRAM ............................ 6
WIRING .................................................................... 7
DISASSEMBLY PROCEDURE .............................. 8
LSI PIN DESCRIPTION .............................. 13
IC BLOCK DIAGRAM ................................. 18
CIRCUIT BOARDS ...................................... 20
TEST PROGRAM ............................ 24/34
MIDI DATA FORMAT ............... 44
MIDI INPLEMENTATION CHART.......................................... 48
PARTS LIST
OVERALL CIRCUIT DIAGRAM

Yamaha S80 Specifications

General

Type	Synthesizer
Sound Engine	AWM2
MIDI	In/Out/Thru
Inputs	Foot controller, Foot switch, Breath controller
Multitimbral	16 parts
Year Released	1999
Keyboard	88 keys, weighted action
Polyphony	64 notes
Effects	Reverb, Chorus
Outputs	L/Mono, R
User Patches	128 User Voices
Display	240 x 64 dot graphic LCD

Summary

General Information and Safety Warnings

Service Disclaimers and Notices

Disclaimer regarding service procedures and authorization requirements.

Lithium Battery Handling Precautions

Guidelines for safe handling and replacement of the internal lithium battery.

Component Chemical Content Warnings

Notice about lead and other chemical content in product components.

Specifications

Panel Layout

Circuit Board Layout

Block Diagram

Wiring Diagram

Disassembly and Assembly Procedures

Main Unit and Initial Board Removal

Steps to remove the control panel, PN, RV boards, and power supply.

Circuit Board and Component Removal

Procedures for removing SM, SV, JK, DM, Wheel, and PC boards.

Keyboard Mechanism Procedures

Detailed steps for disassembling and reassembling the keyboard keys and hammers.

LSI Pin Descriptions

CPU and DAC Pin Assignments

Detailed pin assignments for CPU (PKS) and DAC ICs.

DDE1 and Interface IC Pin Details

Pin assignments for DDE1 (JG710069) and other ICs.

IC Block Diagrams

Logic Gate and Interface IC Block Diagrams

Block diagrams for logic gates, demultiplexers, buffers, and transceivers.

Amplifier and Control IC Block Diagrams

Block diagrams for amplifier, receiver, inverter, and flip-flop ICs.

Test Program and Procedures

Test Program Entry and Basic Component Tests

Instructions for entering tests and testing RAM, WAVE ROM, LCD, and Panel controls.

Input Device and Controller Tests

Tests for Keyboard, Knobs, Sliders, Controllers, Foot Controls, and Breath Controller.

System, Interface, and Operation Tests

Tests for Card, MIDI, HOST, mLAN, Factory Settings, and system operations/shortcuts.