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Akai AX60 Service Manual

Akai AX60
44 pages
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ABBREVIATIONS
FOR
THE
SERVICE
MANUAL
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Akai AX60 Specifications

General IconGeneral
TypeAnalog
Polyphony6-Voice
Oscillators per Voice2
Envelope GeneratorADSR
Keyboard61 Keys
Memory64 patches
MIDIYes
Year Released1986
WaveformsSawtooth, Square
LFOSquare, Sawtooth

Summary

Safety Instructions

Safety Check After Servicing

Confirms specified insulation resistance for safe operation after repair work.

Precautions During Servicing

Guidelines for safe and compliant component replacement and handling during maintenance.

Voltage Conversion Procedure

Instructions for setting the correct voltage for the equipment based on region.

Section 1: Service Manual Overview

AX60 Specifications Overview

Details the technical features, parameters, and specifications of the AX60 model.

Unit Dismantling Procedures

Step-by-step instructions for safely disassembling the AX60 unit's panels and components.

Front Panel Controls and Interface

Overview of all front panel controls, buttons, knobs, indicators, and their functions.

Keyboard Frequency and Musical Notation

Information on keyboard reaction, tempered scale frequencies, and musical notation mapping.

Principal Parts Location Diagram

Diagram indicating the physical location of major internal components within the unit.

Adjustment Procedures

Detailed steps for calibrating and adjusting various circuit parameters for optimal performance.

PC Board Titles and IDs

List of PC board titles and their corresponding identification numbers for reference.

MIDI Implementation Chart

Defines MIDI message transmission and recognition capabilities for the AX60.

Section 2: Parts List and Diagrams

Parts List and Usage Guide

Comprehensive guide to parts, including how to use the list and recommended spares.

How to Use the Parts List

Instructions on interpreting part numbers, references, and symbols in the parts list.

Recommended Spare Parts

List of essential parts recommended for stocking to facilitate efficient repairs.

PC Board Block Components

Listing of parts associated with the main PC board block assembly.

Voice PC Board Parts

Detailed listing of components for the Voice PC board.

CPU PC Board Parts

Detailed listing of components for the CPU PC board.

Chorus PC Board Parts

Detailed listing of components for the Chorus PC board.

Operation (A) PC Board Parts

Detailed listing of components for the Operation (A) PC board.

Operation (B) PC Board Parts

Detailed listing of components for the Operation (B) PC board.

Power Supply PC Board Parts

Detailed listing of components for the Power Supply PC board.

Filter PC Board Parts

Detailed listing of components for the Filter PC board.

Panel Bend Block Components

Listing of parts for the Panel Bend block, including wheels and controls.

Assembly Block Components

Listing of parts for general assembly blocks within the unit.

Final Assembly Block Components

Listing of parts for the final assembly stages of the unit.

Section 3: Schematics and Diagrams

Power PC Board Schematic

Schematic diagram for the power supply PC board.

Interconnection Diagram

Diagram illustrating the interconnections between different PCBs and components.

Control Signal Flow Diagram

Block diagram showing the control signal flow within the AX60.

Voice and Chorus Block Diagram

Block diagram detailing the voice and chorus signal processing paths.

CPU Circuit Diagram

Schematic representation of the Central Processing Unit (CPU) circuitry.

CPU PC Board Layout

Diagram showing the layout of components on the CPU PC board.

Voice PC Board Layout

Diagram showing the layout of components on the Voice PC board.

Voice Signal Flow Diagram

Diagram illustrating the signal flow for the voice processing section.

Operation Signal Flow Diagram

Diagram showing the operational control signal flow.

Operation (A) & (B) PC Board Layouts

Diagrams showing the layout of components on the Operation (A) and (B) PC boards.

Chorus Signal Flow Diagram

Diagram illustrating the signal flow for the chorus effect.

Chorus PC Board Layout

Diagram showing the layout of components on the Chorus PC board.

Integrated Circuit (IC) Locations

Diagram showing the physical location of IC components on the PCBs.

Section 4: Service Bulletins

Service Bulletin 001: Performance Improvements

Details ROM IC program changes for improved performance and MIDI functionality.

Service Bulletin 002: Part Standardization

Information on circuit changes for power supply PC board standardization.

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