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Yamaha MDX-596 Service Manual

Yamaha MDX-596
59 pages
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MDX-596
MDX-596
100718
SERVICE MANUAL
MDX-596
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 inherant 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 all 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 establish a principle-agent 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 accumu-
lated 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 parts replacement. Recheck all work before you apply power to the unit.
MINIDISC RECORDER
IC DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25—34
BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . 35—37
TEST POINT WAVEFORMS . . . . . . . . . . . . . . . 38—39
PRINTED CIRCUIT BOARD . . . . . . . . . . . . . . . 40—46
MD VOLTAGES . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47
SCHEMATIC DIAGRAM . . . . . . . . . . . . . . . . . . 48—50
REMOTE CONTROL TRANSMITTER . . . . . . . . . . .51
PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52—61
GREASE APPLICATION DIAGRAM . . . . . . . . . . . . 62
CONTENTS
TO SERVICE PERSONNEL . . . . . . . . . . . . . . . . . 1—2
REAR PANELS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
INTERNAL VIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
DISASSEMBLY PROCEDURES . . . . . . . . . . . . . . 4—6
ADJUSTMENT & TEST MODE . . . . . . . . . . . . . . 7—16
SPECIAL TEST MODE . . . . . . . . . . . . . . . . . . . . . . .17
ERROR DISPLAY . . . . . . . . . . . . . . . . . . . . . . . 18—19
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . 20—24
+10
6
1
7
2
8
3
9
4
0
5
RNDM
S/F
PROG
A - B
REPEAT
DISPLAY?! SCROLL
( ) &
ABC DEF GHI JKL MNO
PQR
SPACE
STU VWX YZ /
TITLE
SEARCH
SKIP
PLAY PAUSE STOP REC
REC
M-MARK MONO/ST
INPUT
CHAR.
NUMBER
DELETE
SET
ER
TY
WDA SCD-P
SYNCTIME

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Questions and Answers:

Yamaha MDX-596 Specifications

General IconGeneral
TypeMiniDisc Recorder
Recording FormatMiniDisc
Sampling Frequency44.1 kHz
Frequency Response20 Hz - 20 kHz
Harmonic Distortion< 0.05%
Total Harmonic Distortion< 0.05%
Wow and FlutterUnmeasurable
Digital OutputsOptical
Remote ControlYes
Power Consumption15W
Weight3.5 kg
Recording SystemATRAC
Signal to Noise Ratio90 dB
Dynamic Range90 dB
Digital InputsOptical, Coaxial
Analog InputsRCA
Analog OutputsRCA

Summary

Important Service and Safety Notices

Service Personnel Guidelines

Laser Safety Precautions

Guidelines to prevent eye and skin damage from laser radiation.

Rear Panel Identification

Model-Specific Rear Panels

Identifies rear panel configurations for R, G, B, and A models.

Technical Specifications

Digital Audio System Details

Specifications for sampling frequency, coding, and response.

General Unit Specifications

Power supply, dimensions, weight, and accessories.

Internal Component Identification

Unit Disassembly Guide

Top Cover Removal

Instructions for removing the unit's top cover.

Front Panel Removal

Instructions for removing the front panel assembly.

MD Recorder Unit Removal

Instructions for removing the main MD recorder mechanism.

Adjustment and Test Mode Operations

Servicing Procedure Guide

Guide to specific adjustments based on the type of servicing.

Test Mode Entry and Navigation

Instructions on how to enter and navigate the unit's test modes.

Test Mode Functional Descriptions

EJECT Mode

Mode for TEMP setting of EEPROM.

AUTO Preliminary Adjustment Mode

Performs automatic preliminary alignment of the optical system.

AUTO Adjustment Mode

Conducts automatic alignment for optimal playback and recording.

AUTO AFB Adjustment Mode

Performs Automatic Focus Balance adjustment.

Lead-in Switch Adjustment Procedure

MD Mechanism Adjustment Procedures

Optical Pickup Rating Inspection

Method for inspecting and adjusting the optical pickup's performance.

EEPROM Setting Mode Guide

EEPROM Contents List

EEPROM Parameter Categories

Lists parameters for Focus, Slide, Spin, Control, and Adjust settings.

Special Test Mode Operation

Special Test Mode Entry and Procedures

Instructions on how to enter, operate, and cancel the special test mode.

Error Message Reference

Mechanism Error Codes

Specific error codes related to the MD mechanism movement.

Troubleshooting Guide

General Operational Failures

Steps for when the MD unit does not function correctly.

Power, Disc, and Audio Issues

Diagnosing power, disc loading, playback, and audio problems.

Recording and Motor Issues

Troubleshooting recording function and motor operations.

Integrated Circuit (IC) Data

RF Signal Processor (IC1101)

Pin details for the IR3R58M RF signal processing IC.

ATRAC Encoder/Decoder (IC1201)

Pin details for the LR37814 ATRAC encoder/decoder IC.

D-RAM (IC1202) and EEPROM (IC1402)

Pin details for the IX2474AF D-RAM and 58X2402T EEPROM ICs.

Microprocessors (IC1401, IC6)

Pin details for the iX0324AW and M30622M8-xxxFP microprocessors.

Audio Converter (IC1701)

Pin details for the UDA1347T AD/DA converter IC.

MD Unit Block Diagram

Test Point Waveform Diagrams

Printed Circuit Board Layouts

Main P.C.B. Layouts

Top, bottom, and foil side views of the main MD P.C.B.

Other P.C.B. Layouts

Foil side layouts for additional printed circuit boards.

MD Unit Voltage Measurements

IC Pin Voltage Readings

Specific voltage readings for key integrated circuits during operation.

Remote Control Transmitter Details

Remote Control Schematic and Functions

Circuit diagram, key assignments, and custom codes for the remote.

Parts List and Diagrams

Electrical Parts List

Listing of electronic components including capacitors, resistors, and ICs.

Main P.C.B. Component List

Detailed list of components for the main printed circuit boards.

Chip Resistor List

Specific part numbers and values for chip resistors.

Exploded Views of Unit Assembly

Mechanical Parts List

List of mechanical components and their part numbers.

MD Recorder Unit Exploded View

Detailed exploded view of the MD recorder unit's mechanical assembly.

Lubrication Points Diagram

Carbon Resistor Part Number List

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