Yamaha emx 3000

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This document IS pnmea on chloIIne Iree (ECF) paper with soy Ink.

POWERED MIXER

SERVICE MANUAL

I CONTENTS

SPECIFICATIONS ................................................ 3/5
PANEL LAYOUT ................ 7
CIRCUIT BOARD LAYOUT .. 10
WIRING ................................................. .. 11
DIMENSIONS .. 11
BLOCK & LEVEL DIAGRAM ....................................................... 12
DISASSEMBLY PROCEDURE ............................ 14
LSI PIN DESCRIPTION .............................. 17
IC BLOCK DIAGRAM .. ..
CIRCUIT BOARDS

INSPECTIONS

CIRCUIT DIAGRAMS

PARTS LIST

PA-

20010501-135000

.YAMAHA

HAMAMATSU, J APAN
1.389K-0221 FI' 09H PrInted in] apan 2001.4

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EMX300'.)

IMPORTANT NOTICE

This manual has been provided lor the use of authorized Yamaha Fletailers and their servrce personnel. It has been assumed
that basic service procedures inherent to the industry, and more specifically Yamaha Products, are already known and under
stood by the users, and have therefore not been restated.

WARNING : Failure to lollow appropriate service and salety procedures when servicing this product may result in per-
sonal injury, destruction of expensive components and failure of the product to perform as specilied. For
these reasons, we advise all Yamaha product owners that all service required should be performed by an
authorized Yamaha Retailer or the appointed service representative.

IMPORTANT: This presentation or sale of this manual to any individual or firm does not constitute authorization certifi-
cation, recognition of any applicable technical capabilities, or establish a principalragenl relationship of
any form.

The data provrded is belived to be accurate and applicable to the unit(s) indicated on the cover. The research engineering, and
servtce departments of Yamaha are continually striving to improve Yamaha products. Modifications are, therefore, inevitable
and changes in specification are subject to change without notice or obligation to retrofit. Should any discrepancy appear to
exist, please contact the distributors Servrce Division.

WARNING : Static discharges can destroy expensive components. Discharge any static electricity your body may have
accumulated by grounding yourself to the ground bus in the unit (heavy gauge black wires connect to
this bus.)

IMPORTANT: Turn the unit OFF during disassembly and parts replacement. Recheck ail work before you apply power
to the unit.

WARNING: CHEMICAL CONTENT NOTICE!

The solder used in the production at this product contains LEAD. In addition, other electrical/electronic and/or plastic (Where
applicable) components may also contain traces of chemicals found by the California Health and Welfare Agency (and possibly
other entities) to cause cancer and/or birth defects or other reproductive harm.

DO NOT PLACE SOLDER, ELECTRICAL/ELECTRONIC OR PLASTIC COMPONENTS IN YOUR MOUTH FOR ANY REASON WHAT
SO EVER!

Avoid prolonged. unprotected contact between solder and your skint When soldering, do not inhale solder fumes or expose
eyes to solder/flux vapor!

If you come in contact with solder or components located inside the enclosure of this product, wash your hands before handling
food.

WARNlNG: THIS APPARATUS MUST BE EARTHED
IMPORTANT I WARNING

THE WIRES IN THIS MAINS LEAD ARE COLOURED IN Components having special characteristics are marked & and must be
ACCORDANCE WITH THE FOLLOWING CODE; replaced with parts having specification equal to those originally installed.
GREEN-AND~YELLOW: EARTH
BLUE: NEUTRAL
BROWN : LIVE
As the colours of the wires in the mains lead of this apparatus may

not correspond with the coloured markings identifying the terminals in
your plug, proceed as follows:

The Wire which is coloured GREEN and YELLOW must be
connected to the terminal in the plug which is marked by the letter E
or by the safety earth symbol J,- or coloured GREEN and YELLOW.
The wire which is coloured BLUE must be connected to the terminal
which is marked with the letter N or coloured BLACK.

The wire which is coloured BROWN must be connected to the
terminal which is marked with the letter L or coloured RED.

This applies only to products distributed by YAMAHA KEMBLE
MUSIC (U.K.) LTD.