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Yamaha EMX88S - User Manual

Yamaha EMX88S
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SERVICE MANUAL
HAMAMATSU, JAPAN
1,387K-7041 Printed in Japan 2002.03
PA 011625
CONTENTS
SPECIFICATIONS .............................................................................. 3
PANEL LAYOUT.................................................................................. 7
CIRCUIT BOARD LAYOUT & WIRING
.......................................................................................................... 10
DIMENSIONS ....................................................................................11
BLOCK & LEVEL DIAGRAM............................................................. 12
DISASSEMBLY PROCEDURE ......................................................... 14
LSI PIN DESCRIPTION .................................................................... 20
IC BLOCK DIAGRAM........................................................................ 22
CIRCUIT BOARDS ........................................................................... 23
INSPECTION .................................................................................... 37
OVERALL CIRCUIT DIAGRAM
PARTS LIST
EMX68S EMX88S
This document is printed on chlorine free (ECF) paper with soy ink.
OPTION
RK-88 RACK MOUNT KIT
EMX68S 20020325-92000
EMX88S 20020325-105000
RK88 20020325-2500

Table of Contents

Questions and Answers

  • E
    elizabeth59Jul 29, 2025
    Why is no sound coming from the speakers of my Yamaha Music Mixer?
    • J
      jonesamyJul 29, 2025
      There are several reasons why sound might not be outputting from the speakers. One potential cause is that the amplifier's protection circuit has been activated due to excessive load. This could be due to: * Excessive level settings in the channel control or main section. * Insufficient ventilation around the device. * Insufficient load impedance of the connected speakers. Allow the device to cool down, and it should resume normal operation automatically. To prevent this from recurring: * Lower the level settings to the nominal level, using the peak level indicators of the main section as a reference. * Ensure adequate ventilation. * Verify the load impedance and correct the connections if necessary.

Yamaha EMX88S Specifications

General IconGeneral
TypePowered Mixer
Channels8
Frequency Response20 Hz - 20 kHz
EQ3-band EQ per channel
Line Inputs4 (Stereo)

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