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Yamaha MW12CX - Service Manual

Yamaha MW12CX
106 pages
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SERVICE MANUAL
SPECIFICATIONS (総合仕様).................................................................. 3/5
DIMENSIONS (寸法図).............................................................................. 7
PANEL LAYOUT (パネルレイアウト)......................................................... 8
CIRCUIT BOARD LAYOUT (ユニットレイアウト.................................. 12
WIRING DIAGRAM (基板結線図)............................................................. 13
MW12CX OVERALL ASSEMBLY WIRING (MW12CX総組立配線図)....... 14
MW12C OVERALL ASSEMBLY WIRING (MW12C総組立配線図)......... 19
MW12CX DISASSEMBLY PROCEDURES (MW12CX分解手順)............ 24
MW12C DISASSEMBLY PROCEDURES (MW12C分解手順)................. 27
LSI PIN DESCRIPTION (LSI端子機能表).................................................. 30
IC BLOCK DIAGRAM (ICブロック図)...................................................... 32
CIRCUIT BOARDS (シート基板図)........................................................... 35
INSPECTIONS (検査).......................................................................... 45/53
PARTS LIST
IC & DIODE FIGURES (外形図
BLOCK & LEVEL DIAGRAM (ブロック&レベルダイアグラム)
CIRCUIT DIAGRAM (回路図)
CONTENTS (目次)
PA 011859
Copyright (c) Yamaha Corporation. All rights reserved. 07.06
HAMAMATSU, JAPAN
このサービスマニュアルはエコパルプ
(ECF:無塩素系漂白パルプ)を使用しています。
This document is printed on chlorine free (ECF) paper.
MW12CX: 20070625 オープンプライス
MW12C: 20070625 オープンプライス
MW12CX MW12C

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Questions and Answers

  • J
    Jordan CamposAug 4, 2025
    What to do if there is no sound coming from my Yamaha Music Mixer?
    • J
      Jasmine MaldonadoAug 5, 2025
      If you're not getting any sound from your Yamaha Music Mixer, there are several things to check: * Make sure your speaker cables are connected properly and not shorted. * Verify that the ON, ST, and REC switches for the channels you're using are turned on. * Ensure the volume controls of your sources, audio devices, applications software, and computer operating system are set at appropriate levels. * Check if the output of your computer operating system is muted. * Close any applications you're not using. * Confirm that the sound output of your computer operating system and the Cubase AI application are assigned properly.
  • M
    Marilyn HansenAug 15, 2025
    How to turn on Yamaha MW Music Mixer?
    • M
      Mrs. Melissa TorresAug 15, 2025
      Ensure that the included adapter is properly plugged into both the Yamaha MW mixer and a suitable AC wall outlet.
  • W
    williamswalterOct 25, 2025
    Why is the sound intermittent or distorted on my Yamaha Music Mixer?
    • M
      Michelle MeyerOct 25, 2025
      If you're experiencing intermittent or distorted sound with your Yamaha Music Mixer, several factors could be at play. First, check if the PEAK indicator is flashing red, indicating potential distortion; lower the GAIN control or channel fader levels. Also, ensure that the effects and compressor levels are appropriate by adjusting the EFFECT RTN fader, EFFECT control, and COMP control levels. Quit any unnecessary applications, device drivers, or USB devices that may be running simultaneously. If you are playing back a large number of audio tracks, the number of tracks you can play at the same time will depend on the performance of the computer you are using. Also, consider that recording or playing long continuous sections of audio can strain your computer's resources. For large audio file...

Summary

SPECIFICATIONS

Electrical Specifications

Details the electrical performance characteristics of the mixing console.

PANEL LAYOUT

Channel Control Section

Details the layout and function of controls for each input channel.

Master Control Section

Explains the layout and function of the main output and control sections.

CIRCUIT BOARD LAYOUT

WIRING DIAGRAM

ASSEMBLY WIRING PROCEDURES

MW12 CX Overall Assembly Wiring

Provides step-by-step instructions for wiring the MW12CX model during assembly.

DISASSEMBLY PROCEDURES

MW12 CX Disassembly Procedures

Details the steps for safely disassembling the MW12CX model.

MW12 C Disassembly Procedures

Details the steps for safely disassembling the MW12C model.

CIRCUIT BOARDS

INSPECTIONS

Mixer Check

Details the preparation and specific control settings for various operational checks.

Distortion

Details the procedure for measuring signal distortion at various output terminals.

COMP

Covers the Gain, Ratio, Frequency Characteristic, Distortion, and Attack/Release Time of the compressor.

USB Testing

Covers testing procedures for USB recording and gain playback.

PARTS LIST

MW12 CX Overall Assembly Parts

Lists all parts for the MW12CX overall assembly, with reference numbers and quantities.

MW12 C Overall Assembly Parts

Lists all parts for the MW12C overall assembly, with reference numbers and quantities.

CIRCUIT DIAGRAM

Yamaha MW12CX Specifications

General IconGeneral
TypeAnalog Mixer
Channels12
Microphone Preamps4
Aux Sends2
Phantom PowerYes
EQ Bands3
USB InterfaceYes

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