Hitachi MX-W50 Service Manual

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LUBRICATION
MAINTENANCE
EXPLANATION OF NEW CIRCUITS
EXPLANATION OF NEW PARTS OF CD UNIT
DIFFERENCE FOR DESTINATION
IC INTERNAL BLOCK DIAGRAN ....
VOLTAGE CHART. .........cseees
PRINTED WIRING BOARD . 29-34
CIRCUIT DIAGRAM ............ 35-43
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EXPLODED VIEW
(Cabinet)
(Cabinet, Unit mechanism)
(Cassette Chassis)
REPLACEMENT PARTS LIST .
CD Slimline System
TABLE DES MATIERES
CARACTERISTIQUES TECHNIQUES
DEMONTAGE
INSTRUCTION GENERALES DE REGLAGE
LUBRIFICATION
ENTRETIEN
EXPLICATION DES NOUVEAUX CIRCUITS
EXPLICATION DES NOUVELLES PIECES DU LECTEUR CD ........ 22
DIFFERENCE EN FONCTION DU PAYS DE DESTINATION
SCHEMA FONCTIONNEL INTERIEUR IC
TABLEAU DES TENSION
PLAN DE BASE
PLAN DE CIRCUIT .
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(Coffret, Méchanisme de barre) .........cceeeesseeceetesennenie sesenes 49
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ETIQUETTE D’AVERTISSEMENT. ou... ceecceescseessseteeereeevernnnnin eanenee 61
WARNING LABEL ou... seseseereeeeceeeeeeteneraeneees :
CAUTION
DANGER
Invisible laser radiation when open and interlocks failed or defeated. AVOID DIRECT EXPOSURE TO BEAM.
GEFAHR
Unsichtbare Laser-Strahlung wenn Interlock (Blockierung) funktionsuntichtig oder abgeschaltet.
UNMITTELBAREN KONTAKT MIT DEM STRAHL UNBEDIGT VERMEIDEN.
DANGER
Faire trés attention aux radiations émises par le faisceau laser invisible au défaillance du verrouillage. NE JAMAIS
S’EXPOSER DIRECTEMENT AU FAISCEAU.
VARNING
Nar apparaten Opponats och skyddsanordningen eller satts ur funktion forekommer osynlig laser straining. UNDVIK
DIREKT BESTRALNING.
ADVARSEL
Nar apparatet Abnes og beskyttelsesanordningen ikke virker eller seettes un af funktion, forekommer der usynlig
laserstaling. UNDGA DIREKTE BESTRALING.
ADVERSEL
Nar denne delen er apen som fglge av at !4sen er utkoplet eller ikke fungerer, eksisterer det usynlig laserstraling.
UNNGA A BLI UTSATT FOR DIREKTE BESTRALING!
VAROITUS
Laite lahettaa nakymatonta lasersateilya, kun se avataan ja kun sisdiset turvalukot eivat toimi. VARO JOUTUMASTA
ALTTIIKSI SATEILYLLE.
SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT
STEREO CASSETTE RECEIVER/COMPACT DISC PLAYER
August 1987 TOYOKAWA WORKS

Hitachi MX-W50 Specifications

General

Brand	Hitachi
Model	MX-W50
Category	CD Player
Language	English

Summary

SAFETY PRECAUTIONS

SPECIFICATIONS

GENERAL

Provides overall specifications for power supply, dimensions, and weight.

AMPLIFIER SECTION

Details output power, distortion, input sensitivity, and load impedance.

TUNER SECTION

Lists FM and AM frequency ranges, sensitivity, and signal-to-noise ratios.

TAPE DECK SECTION

Covers track system, recording system, tape types, and frequency response.

CD PLAYER SECTION

Specifies playing time, diameter, sampling frequency, and quantization number.

DISASSEMBLY

Cabinet and Doors Removal

Instructions to remove upper case, CD door, and cassette door.

Internal Component Removal

Steps for removing internal P.W.Bs, receiver unit, cassette chassis, and CD mechanism.

Servicing Precautions

Laser and Mechanism Handling

Precautions for handling the semiconductor laser and unit mechanism assembly.

Part Replacement Precautions

Specific precautions to observe when replacing internal parts of the unit.

LUBRICATION

MAINTENANCE

Cleaning Procedures

Instructions for cleaning the unit's cabinet and panels using appropriate methods.

GENERAL ADJUSTMENT INSTRUCTIONS

RADIO SECTION ADJUSTMENTS

Procedures for adjusting the radio section, including FM and AM tuners.

FM TUNER ADJUSTMENT

Detailed steps for tuning and adjusting the FM reception circuitry.

AM TUNER ADJUSTMENT

TAPE DECK SECTION ADJUSTMENTS

Tape Speed and Azimuth Adjustment

Procedures for calibrating tape speed and aligning playback heads.

Gain and Level Adjustments

Steps for adjusting playback gain, bias current, and output levels.

Cassette Chassis Checking

Inspection and adjustment of the cassette deck's mechanical components.

CD PLAYER SECTION ADJUSTMENT

Circuit Adjustment Procedures

Steps for adjusting CD player circuitry, laser output, and tracking servo.

Performance Checks

Methods for checking CD player error rate and actuator performance.

CIRCUIT DIAGRAMS

Main P.W.B. & CD Section Diagrams

Layouts for main P.W.B. and detailed circuit diagrams for CD player components.

BLOCK DIAGRAM

WIRING DIAGRAM

EXPLODED VIEWS

Cabinet and Unit Mechanism Assembly

Illustrates the assembly of the unit's outer casing and internal tape mechanism.

Cassette Chassis Assembly

Detailed breakdown of the parts that make up the cassette deck chassis.

REPLACEMENT PARTS LIST

Capacitors

A list of all capacitor part numbers, descriptions, and specifications.

Resistors

A comprehensive list of resistor part numbers and their values.

Diodes

Part numbers and descriptions for all diodes used in the unit.

Transistors

List of transistors, including their part numbers and types.

Variable Resistors

Part numbers and functions for all variable resistors (potentiometers).

Coils & Transformers

Part numbers and descriptions for various coils and transformers.

WARNING LABELS

Laser Safety and General Warnings

Labels indicating hazardous laser radiation, safety precautions, and general user warnings.