Yamaha EMX312SC Service Manual

SERVICE MANUAL
HAMAMATSU, JAPAN
■ CONTENTS（目次）
SPECIFICATIONS ( 総合仕様 ) .......................................................3/5
PANEL LAYOUT ( パネルレ イアウ ト )...............................................7
CIRCUIT BOARD LAYOUT ( ユニ ッ ト レイアウ ト ) ........................10
WIRING DIAGRAM( 基板結線図 ) ....................................................11
DIMENSIONS ( 寸法図 )...................................................................13
DISASSEMBLY PROCEDURES ( 分解手順 ) ..................................14
LSI PIN DESCRIPTION (LSI 端子機能表 ) .......................................24
IC BLOCK DIAGRAM (IC ブロック図) ............................................26
CIRCUIT BOARDS ( シー ト基板図 ) ................................................28
INSPECTION( 検査 ) ...................................................................50/58
PS
CIRCUIT BOARD REPAIR GUIDE
(PS シー ト 故障修理ガ イ ド )........................................................66/76
PARTS
LIST
BLOCK & LEVEL DIAGRAM( ブロック & レベルダイアグラム )
CIRCUIT
DIAGRAM( 回路図 )
POWERED MIXER
Copyright (c) Yamaha Corporation. All rights reserved. PDF–K4902 ’05.09
PA
011791
EMX512SC: 200510-99750
EMX312SC: 200510-78750
RK512: 200510-5250
EMX512SC EMX312SC
• OPTION（別売品）
RK512 RACK MOUNT KIT （ラ ッ クマウン トキッ ト）
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.

Yamaha EMX312SC Specifications

General

Type	Powered Mixer
Channels	12
Mono Channels	8
Stereo Channels	2
Microphone Inputs	8
Line Inputs	4
EQ per Channel	3-band
Aux Sends	2
Phantom Power	Yes
Frequency Response	20Hz - 20kHz
Effects	Digital Effects
Amplifier Power	300W + 300W
Power Output	300W + 300W @ 4 Ohms
Output Power	300W + 300W @ 4 ohms
Total Harmonic Distortion	0.1%
Signal-to-Noise Ratio	100dB

Summary

Specifications

General Specifications

Details general specifications including power output, frequency response, and distortion.

Panel Layout

Controls on Each Channel

Describes the controls and indicators for each input channel.

Digital Effect Section

Explains the digital effect section controls like program selector and parameter.

Circuit Board Layout

Rear View

Shows the layout of circuit boards on the rear of the unit.

Top View

Shows the layout of circuit boards on the top of the unit.

Front View

Shows the layout of circuit boards on the front of the unit.

Side View

Shows the layout of circuit boards on the side of the unit.

Wiring Diagram

Dimensions

Disassembly Procedures

Preparing

Notes on required tools and initial preparation steps for disassembly.

Front Panel Unit

Step-by-step instructions for removing the front panel unit.