Yamaha dcu5d digital cabling unit service manual

Page 1

DIGITAL CABLING UNIT

DCU5D

SERVICE MANUAL

l CONTENTS (3 :x)

SPECIFICATIONS (fififittfi) .................................................. 3
DIMENSIONS (TI'EI) ...................
PANEL LAYOUT (/Yilb I/f 7") I) ...........
CIRCUIT BOARD LAYOUT (1:7 I I/f7'7 I)
DISASSEMBLY PROCEDURE (Mfimfi)
LSI PIN DESCRIPTION (LSI fi¥I§§52§X
IC BLOCK DIAGRAM (IC 7137 7.) ..
CIRCUIT BOARDS (>- FEW.
PARTS LIST

BLOCK DIAGRAM (71] 'y 7 fif 775Lx)
CIRCUIT DIAGRAM (Efil)

PA- .YAMAHA

- HAMAMATSU JAPAN
- 7 7 7 2 L
200706 7.I' / 7{ Copyright ICIYamaha Corporafion.A|I rights reserved. PDF WI 20), 'D7.09

Page 2

DCU5D

INIPORTAN T NOTICE

This manual has been provided tor 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 theretore not been restated.

WARNING 1 Failure to follow appropriate service and satety procedures when servicing this product may result in personal in'ury,
destruction of expensive components and failure of the product to pertorm as specified. For these reasons, we a vise

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 tirm does not constitute authorization certification,
recognition of any applicable technical capabilities, or establish a principal-agent relationship of any form.

The data provided is belived to be accurate and applicable to the unit(s) indicated on the cover. The research engineering, and service
departments ol 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 Service Division.

WARNING : Static discharges can destroy expensive components. Discharge any static electricity your body may have accumulated
by grounding yoursell to the ground bus in the unit (heavy gauge black wires connect to this bus.)
IMPORTANT 2 Turn the unit OFF during disassembly and parts replacement. Recheck L work before you apply power to the unit.
WARN : 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 Wellare 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 IN YOUR MOUTH FOR ANY REASON WHAT SO EVER!

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

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

IMPORTANT NOTICE FOR THE UNITED KINGDOM
Connecting the Plug and Cord

WARNING: THIS APPARATUS MUST BE EARTHED
IMPORTANT. The wires in this mains lead are coloured in accordance with the following code:

GREEN~AND~YELLOW EARTH
BLUE NEUTRAL
BROWN : LIVE

As the colours of the wires in the mains lead oi this apparatus may not correspond with the coloured markings identifying the terminals in
your plug proceed as follows:

The wire which is coloured GREEN-andeELLOW must be connected to the terminal in the plug which is marked by the letter E or by the
safety earth symbol @ or colored GREEN or GREENrandrYELLOW.

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. (3 wires)

IWARNING

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

$Ffl®fil§i§élx £2é$§f§¢étb¢lii§§fi5fiTTn Qififéigéli. 'écétmfcwlmfifléimfififiai :lfifii < 5 its