Yamaha mx12 4 mixer service manual version

Page 1

MIXING CONSOLE

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Dan! mm 6.3 52.; lm

I CONTENTS (5 m

SPECIFICATIONS (Rama) .................................................. 2/4
PANEL LAYOUT (mum/4 70 I) .......................... e
CIRCUIT BOARD LAYOUT (:L; v I 1/ 4 77 I7 I). ..s
DIMENSIONS (TI-El) ............................................ 9

BLOCK DIAGRAM (7:: y 7 5M 7775 A)....
DISASSEMBLY PROCEDURE (fiflfifi) ..
LSI PIN DESCRIPTION (L$|fi¥1§fi§§)
IC BLOCK DIAGRAM (I07 Cl 7 7|)

CIRCUITBOARDS<~>- Igfi ) ..... 17
INSPECTIONSOFQE)

WIRING(§#E%§%RIZI).. ........ 35
CIRCUIT DIAGRAM (IE1 (21).. . .............................. 38~53
PARTS LIST

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PA YAMAHA CORP.

HAMAMATSU. JAPAN
1996122069800 2.3m Mal Primedm Japan 96.

Page 2

MX12/4

IMPORTANT NOTICE

stood by the users, and have therefore not been restated.

authorized Yamaha Retailer or the appointed service representative,

any form.

exist, please contact the distributors Service Division.

this buss.)

to the unit.

This manual has been provided lor the use of authorized Yamaha Retailers and their service personnel. It has been assumed
that basic service procedures inherent to the industry, and more specifically Yamaha Products, are already known and under-

WARNING: Failure to follow appropriate service and salety procedures when servicing this product may result in per-
sonal injury, destruction 0! expensive components and failure of the product to perform as specified. For
these reasons, we advise all Yamaha product owners that all servrce required should be perlorrned by an

IMPORTANT: This presentation or sale of this manual to any individual or lirm does not constitute authorization, certili~
cation. recognition of any applicable technical capabilities, or establish a principal-agent relationship al

The data provided is belived to be accurate and applicable to the unitla) indicated on the cover. The research engineering. and
service departments of Yamaha are continually striving to improve Yamaha products Modifications are, theralore, inevitable
and changes in specification are subject to change without notice or obligation to retrofit. Should any discrepancy appear to

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

IMPORTANT: Turn the unit Elf during disassembly and parts replacement. Rechack a_ll work before you apply power

WARNING: CHEMICAL CONTENT NOTICE!

other entities) to cause cancer and/or birth defects or other reproductive harm.
SO EVERI
eyes to solder/flux vapor!

food .

The solder used in the production ol this product contains LEAD. In addition, other electrical/electronic and/or plastic [where
applicable) components may also contain traces of chemicals tound by the California Health and Welfare Agency (and possibly

DO NOT PLACE SOLDER. ELECTRICAL/ELECTRONIC OR PLASTIC COMPONENTS IN YOUR MOUTH FOR ANY REASON WHAT

Avoid prolonged, unprotected contact between solder and your skin! When soldering, do not inhale solder fumes or expose

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

I WARNING

Components having special characteristics are marked A and must be replaced with parts having specification equal
to those originally installed.

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