Battery operation time

See “Battery life”

Battery life

Batteries

Recording

Playback

LIP-8 lithium ion

Approx.

Approx.

Rechargeable battery

4 hours

7 hours

 

 

 

Two LR6 (size AA)

 

Approx.

Sony alkaline dry batteries

 

12 hours

 

 

 

LIP-8 + Two LR6 (size AA)

 

Approx.

 

22 hours

 

 

Dimensions

Approx. 109.5 x 19.7 x 77 mm (w/h/d) (4 3/8 x 25/32 x 3 1/8 in.)

Mass

Approx. 190 g (6.8 oz) the recorder only Approx. 240 g (8.5 oz) incl, a recordable MD, and LIP-8 lithium ion rechargeable battery Supplied accessories

AC power adaptor (1)

Headphones with a remote control (1) LIP-8 lithium ion rechargeable battery (1) Dry battery case (1)

Ear pads (2) Carrying case (1)

Design and specifications are subject to change without notice.

For customers in Europe

This MiniDisc Recorder is classified as a CLASS 1 LASER product.

The CLASS 1 LASER PRODUCT label is located on the buttom exterior.

SAFETY-RELATED COMPONENT WARNING!!

COMPONENTS IDENTIFIED BY MARK !OR DOTTED LINE WITH MARK !ON THE SCHEMATIC DIAGRAMS AND IN THE PARTS

LIST ARE CRITICAL TO SAFE OPERATION.

REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY.

 

TABLE OF CONTENTS

 

Specifications

1

1.

SERVICING NOTE

3

2.

GENERAL

 

 

Location and Function of Controls

4

3.

DISASSEMBLY

 

 

3-1. Upper Panel Assy, Bottom Panel Assy Removal

20

 

3-2. Main Board Removal

21

 

3-3. Mechanism Deck (MT-MZR50-143) Removal

21

 

3-4. Optical Pick-up Assy, REC Board Removal

22

 

3-5. CLV Board Removal

22

 

3-6. Battery Case Assy Removal

23

 

3-7. Power Board, Switch Board Removal

23

 

3-8. Switch Unit (with JOG Dial) Removal

24

4.

TEST MODE

25

5.

ADJUSTMENTS

31

6.

DIAGRAMS

 

 

6-1. Explanation of IC Terminals

35

 

6-2. Block Diagrams

39

 

6-3. Circuit Boards Location

43

 

6-4. Printed Wiring Boards – Main Section

45

 

6-5. Schematic Diagram – Main (1/3) Section

49

 

6-6. Schematic Diagram – Main (2/3) Section

53

 

6-7. Schematic Diagram – Main (3/3) Section

57

7.

EXPLODED VIEWS

 

 

7-1. Upper Panel, Bottom Panel Section

65

 

7-2. Chassis Section

66

 

7-3. Mechanism Deck Section

67

8.

ELECTRICAL PARTS LIST

68

Flexible Circuit Board Repairing

Keep the temperature of the soldering iron around 270°C during repairing.

Do not touch the soldering iron on the same conductor of the circuit board (within 3 times).

Be careful not to apply force on the conductor when soldering or unsoldering.

Notes on chip component replacement

Never reuse a disconnected chip component.

Notice that the minus side of a tantalum capacitor may be damaged by heat.

ATTENTION AU COMPOSANT AYANT RAPPORT À LA SÉCURITÉ!

LES COMPOSANTS IDENTIFIÉS PAR UNE MARQUE !SUR LES

DIAGRAMMES SCHÉMATIQUES ET LA LISTE DES PIÈCES SONT CRITIQUES POUR LA SÉCURITÉ DE FONCTIONNEMENT. NE REMPLACER CES COMPOSANTS QUE PAR DES PIÈCES SONY DONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL OU DANS LES SUPPLÉMENTS PUBLIÉS PAR SONY.

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Sony MZ-R50 service manual Table of Contents, General, Disassembly, Diagrams, Exploded Views

MZ-R50 specifications

The Sony MZ-R50, launched in the late 1990s, is a notable model in the MiniDisc player genre, which revolutionized how consumers listened to music. Part of Sony's first generation of MiniDisc recorders, the MZ-R50 quickly gained popularity for its sleek design and innovative features.

One of the standout features of the MZ-R50 is its compact size and lightweight construction. It weighs just 160 grams, making it one of the most portable audio devices of its time. This portability paired with a stylish aesthetic allowed users to carry their music with ease, appealing to young, active lifestyles.

The MZ-R50 utilizes MiniDisc technology, which employs a small, flat disc encased in a protective shell. This format offers superior sound quality compared to cassette tapes, allowing for digital recording and playback. Users can record audio directly onto the disc in real-time or transfer music from CDs with ease. The player supports several recording modes, including LP2 and LP4, which allow users to maximize recording time without sacrificing quality.

Another significant feature of the MZ-R50 is its impressive battery life. It can run for up to 10 hours on a single charge, enabling long listening sessions without frequent recharging. The device also includes a digital pitch control, allowing users to change the tempo of tracks without affecting the pitch, which is especially useful for musicians and DJs.

Moreover, the MZ-R50 incorporates Sony's ATRAC (Adaptive Transform Acoustic Coding) compression technology. This advanced algorithm was designed to reduce the file size of audio while maintaining high sound fidelity, ensuring that music stored on MiniDiscs sounded close to the original recording. The player is compatible with both standard and long-play MiniDiscs, providing flexibility for users who want to store more music on a single disc.

In terms of connectivity, the MZ-R50 features an optical input for high-quality digital recording from other devices, along with a headphone output and a line out option for connecting to external speakers or audio systems. Its user-friendly interface allows for easy navigation through tracks and playlists, making it accessible for users of all ages.

Overall, the Sony MZ-R50 remains a beloved piece of audio technology, reflecting a unique combination of portability, sound quality, and user-friendly features, establishing its place in the history of personal music players. Its legacy continues to inspire later generations of audio enthusiasts.