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M-Audio Keystation 88 MK3 User Manual

M-Audio Keystation 88 MK3
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Confidential M-Audio Service Manual
M-Audio
Keystation 88 MK3
[MK35B]
Service Manual
v1.0
2020-08-25
The information in this document contains privileged and confidential information. It is
intended only for the use of those authorized by M-Audio. If you are not the authorized,
intended recipient, you are hereby notified that any review, dissemination, distribution
or duplication of this document is strictly prohibited. If you are not authorized, please
contact M-Audio and destroy all copies of this document. You may contact M-Audio at
support@m-audio.com.
© Copyright M-Audio
ATTENTION!
This document contains sensitive proprietary information.
All recipients must have a current non-disclosure agreement
on file with M-Audio.
Do not make illegal copies of this document.
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M-Audio Keystation 88 MK3 Specifications

General IconGeneral
BrandM-Audio
ModelKeystation 88 MK3
CategorySpeakers
LanguageEnglish

Summary

Preface and Usage Terms

Read This - Manual Usage Conditions

Terms and conditions for using the service manual and performing repairs.

Warnings and Safety Precautions

General Electrical and Water Safety

Alerts regarding electric shock, water exposure, and unauthorized repairs.

Fuse and Battery Replacement Warnings

Cautions for proper replacement of power supply fuses and internal batteries.

Product Safety Instructions

Comprehensive Safety Guidelines

Guidelines covering power, cords, environment, ventilation, mounting, cleaning, and service.

Keystation 88 MK3 Service Manual Title

Internal Layout and Connection Diagram

Internal Cable Routing

Details on connecting the Wheel 6P Cable, Main board J10 20PIN Cable, and Main Board CN1, CN2 20 PIN Cables.

General Exploded Drawing and Parts List

Exploded View of Components

Visual representation of the M-Audio Keystation 88 MK3 components with part numbers.

Main Board Circuit Schematic

Function Board Circuit Schematic

Comprehensive Parts List (Page 1)

Cabinet and Button Parts

List of spare parts including top cabinet, silicone buttons, and plastic buttons.

Wheel, Slider, and Board Assemblies

Spare parts for wheel assembly, slider caps, function boards, and foot pads.

Detailed Parts List (Page 2)

Keyboard Base and Connector Parts

Spare parts including keyboard bases, connector plugs, and switches.

Housing and PCB Components

Spare parts for PCBs, switches, potentiometers, LEDs, and connectors.

Component Breakdown (Page 3)

Connectors, Capacitors, and Resistors

Spare parts including flat connectors, ceramic capacitors, and resistors.

Diodes, ICs, and Transistors

Spare parts including diodes, voltage regulators, and transistors.

Spare Parts Inventory (Page 4)

Crystals, ICs, and Brackets

Spare parts including crystals, ICs, metal brackets, and strengthen metal sheets.

Felt, Silicone, and Packaging

Spare parts for felt, silicone feet, and EPE packaging materials.

Main Board PCB Layouts

Main Board Top Layer View

Top-side layout of the main circuit board, showing component placement and connections.

Main Board Bottom Layer View

Bottom-side layout of the main circuit board, illustrating solder points and traces.

Function Board PCB Layout

Function Board Component Placement

Layout of the function board, detailing component placement and PCB traces.

Key Combination Diagnostics

Firmware Update Mode Activation

Key combination to enter the Firmware Update Mode for special functions.

System Self-Test Mode Activation

Key combination to enter the System Self-testing mode for comprehensive checks.

MIDI-OX Software Setup

Instructions for configuring MIDI-OX software for testing the instrument.

System Self-Testing Procedures

Navigating Self-Tests

How to switch between self-testing procedures using ADVANCE and OCT buttons.

Function Button Testing

Procedure to test all function buttons for proper operation and LED feedback.

Key and ADC Self-Testing

Keyboard Key Input Test

Testing keyboard key presses for correct note on/off messages and LED feedback.

Analog-to-Digital Converter Test

Testing ADC functions like volume slider and pitch/mod wheels.

Frequently Asked Questions (FAQ)

Power-Up and LED Issues

Solutions for instrument startup problems and non-lighting LEDs.

Button, Keyboard, ADC Problems

Troubleshooting common issues with buttons, keyboard, and ADC functions.

USB MIDI Connectivity Issues

Steps to resolve USB MIDI device recognition in PC software.

Spare Parts List - Section 1

Cabinet and Button Components

List of spare parts including top cabinet, silicone buttons, and plastic buttons.

Assemblies and Pad Parts

Spare parts for wheel assembly, slider caps, function boards, and foot pads.

Spare Parts List - Section 2

Connectors, Cables, and Brackets

Spare parts including flat connectors, cables, metal brackets, and strengthen metal sheets.

Felt, Silicone, and Packaging

Spare parts for felt, silicone feet, and EPE packaging materials.

Spare Parts List - Section 3

USB Cables and Documentation

Spare parts including USB cables, software download cards, labels, and manuals.

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