Yamaha ddp 2

Page 1

DIGITAL PROCESSOR

DDP-Z

SERVICE MANUAL

'V' VAMAIIA mrumsouno DIGIYALPROCEsSOfi Don-2 M BET-3
-mm . mm I rm mm mm
2? .. "172 H
/ IMPORTANT NOTICE \

This manual has been provided for 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 understood by the users, and have therefore not been restated

WARNING: Failure to follow appropriate service and safety procedures when servicing this product may result in
personal injury. destruction of expensive components. and failure of the product to perform as
specified For these reasons, we advise all YAMAHA product owners that any service required should
be performed by an authorized YAMAHA Retailer or the appointed service representative,

IMPORTANT: The presentation or sale of this manual to any individual or firm does not constitute authorization,
certification or recognition of any applicable technical capabilities. or eslablishaprinciple-sgent
relationship of any form.

The data provided is believed to be accurate and applicable to the unit(s) indicated on the cover. The research,

engineering, and service departments of YAMAHA are continually striving to improve YAMAHA products.

Modifications are, therefore, inevitable and specifications are subject to change without notice or obligation to retrofit.

Should any discrepancy appear to exist, please contact the distributor's Service Division,

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

IMPORTANT: Turn the unit OFF during disassembly and part replacement, Recheck all work before you apply power

\ to the unit,

I CONTENTS

TO SERVICE PERSONNEL ......... ...........1
REAR PANELS ............... 1~2
SPECIFICATIONS ..

INTERNAL VIEW
DISASSEMBLY PROCEDURES .
DIAGNOSTIC MODE 5~11
DISPLAY DATA ............ . ............ 12

IC DATA .
PIN CONNECTION DIAGRAM
PRINTED CIRCUIT BOARD 22~31
BLOCK DIAGRAM ...32~33
SCHEMATIC DIAGRAM . ...34~36
PARTS LIST 37~46

Copyright 2004 YAMAHA CORPORATION

100594 ' This manual is copyrighted by YAMAHA and may not be copied or N

v redistributed either in print or electronically without permission.

YAMAHA CORPORATION
P.O.Box1,Hamamatsu,Japan

3K-444 lift] st Printed in Japan 97.8

Page 2

DDP-Z

I TO SERVICE PERSONNEL

1. Critical Components lnlormation.
Components having special characteristics are marked A
and must be replaced with parts having specifications equal
to those originally installed.

2. Leakage Current Measurement (For i20V Models Only)
When service has been completed, it is imperative to verily
that all exposed conductive surtaces are properly insulated
from supply circuits.

0 Meter impedance should be equivalentto 1500 ohm shunted
by 0.15mi

o Leakage current must not exceed 0.5mA.

0 Be sure to test for leakage with the AC plug in both
polarities.

AC LEAKAGE
WALL EQUIPMENT TESTER OR
OUTLET UNDER TEST EQUIVALENT
INSULATING
TABLE

CAUTION
F301 : FOR CONTINUED PROTECTION AGAINST RISK OF FIRE, REPLACE ONLY WITH SAME TYPE 1.5A, 250V FUSE."
#A_V

CAUTION

F301 : REPLACE WITH SAME TYPE 1.5A, 250V FUSE.

ATTENTION

F301 : UTILISER UN FUSIBLE DE RECHANGE DE MEME TYPE DE 1.5A, 250V.

WARNING: CHEMICAL CONTENT NOTICE!

The solder used in the production of 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 detects or other reproductive harm.

DO NOT PLACE SOLDER, ELECTRICAL/ELECTRONIC OR PLASTIC COMPONENTS lN YOUR MOUTH FOR

ANY REASON WHATSOEVER!

Avoid prolonged, unprotected contact between solder and your skin! 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.

I REAR PANELS
V U, 0 models

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