Sony MZ-R50 service manual Structure of Servo Mode, Volume

Page 26

[Servo Mode]

Set the test mode, press the + key, and set the servo mode

 

using the VOLUME + and – keys.

When the servo mode is set, the optical pickup will move to the

 

outer circumference or inner circumference if the + key or

2￿

3￿ 4￿

5

= key is pressed.

• To set other modes, refer to “ Structure of Test Mode ”.

• Structure of Servo Mode

Mode : 000

VOLUME +key or – key

 

 

1

Servo mode

 

Ó key

(To page 27)

 

p key

Mode : 010

 

OffsetMcompensation

 

 

Ó key

 

value displyed

*1:+ key

:= key

*2:REC key

p key

Mode : 032

 

 

MO playback EFMbalance adjustment

 

 

p key

*2

Ó key

*1

Mode : 033

 

 

 

 

MO playback ABCDMlevel adjustment

 

*2

Ó key

 

p key

Mode : 034

 

 

 

 

MO recording EFMbalance adjustment

 

*2

Ó key

*1

p key

 

 

 

 

 

 

VOLUME +key or – key

pkey

pkey

pkey

pkey

pkey

pkey

Mode : 011

VC offset compensationM

Ó key

Mode : 012

FE offset compensationM

Ó key

Mode : 013

APC offset Mcompensation

Ó key

Mode : 014

ABCD offsetMcompensation

Ó key

Mode : 015

All servoM ON

Ó key

Mode : 016

TemperatureM display

VOLUME +key or – key

 

 

 

 

Mode : 035

 

 

 

MO recording ABCDM level adjustment

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Ó key

 

p key

*2

 

 

 

 

 

 

 

 

 

 

 

 

 

Mode : 036

 

 

 

 

 

 

 

 

 

Laser MO readM adjustment

 

 

 

 

 

 

 

 

 

 

p key

 

 

 

Ó key

 

 

 

 

 

 

 

 

Mode : 037

 

 

 

 

 

 

 

 

 

MO focus gainM adjustment

 

 

 

 

 

 

 

 

 

 

p key

 

 

 

Ó key

 

 

 

 

 

 

 

 

Mode : 038

 

 

 

 

 

 

 

 

 

MO tracking Mgain adjustment

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Ó key

 

 

 

 

 

 

 

p key

 

Mode : 039

 

 

 

 

MO focusMbias variable

 

 

 

 

 

 

 

 

 

(Cluster Display)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Ó key

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Ó key

p key

MMode : 040

 

 

 

Low reflection CD playback

 

Ó key

 

adjustment

 

 

p key

 

 

Mode : 020

 

 

 

 

 

 

M

 

 

 

 

 

Laser power adjustment

 

Ó key

key

 

 

 

p key

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Mode : 021

 

 

 

 

 

 

 

 

 

 

 

Laser MO readM adjustment

or

 

 

 

 

 

 

 

 

 

 

 

 

 

+key

 

 

 

 

 

 

 

Ó key

 

 

 

p key

 

 

 

 

 

 

 

 

 

Mode : 022

VOLUME

 

 

 

 

 

 

 

 

 

 

 

Laser MO writeM adjustment

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Ó key

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

p key

 

 

 

Mode : 030

 

 

 

 

 

M

 

 

 

 

 

MO playback recording

 

Ó key

 

 

 

 

 

 

 

adjustment

 

 

 

 

 

 

 

 

 

 

 

 

VOLUME +key or – key

 

 

 

 

 

 

 

 

 

p key

 

 

 

 

 

 

 

Mode : 031

 

 

 

 

 

 

 

 

 

MO focusMsearch ON

 

 

 

 

 

 

 

 

 

 

 

 

 

Ó key

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

VOLUME +key or – key

pkey

pkey

pkey

pkey

pkey

Mode : 041

Low reflection CDMfocus serch ON

Ó key

Mode : 042

Low reflection CD EF balance adjustment

Ó key

*1

Mode : 043

Low reflection CD ABCD level adjustment

Ó key

Mode : 044

Laser Low reflection CD read adjustment

Ó key

Mode : 045

Low reflection CD focus gain adjustment

Ó key

2￿

3￿ 4￿

5

6￿

7￿ 8￿

9

(To page 27)

(To page 27)

(To page 27)

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Image 26
Contents Specifications NEWDiagrams Table of ContentsDisassembly GeneralSection Servicing Note General Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Section Disassembly Upper Panel ASSY, Bottom Panel Assy RemovalMain Board Removal Mechanism Deck MT-MZR50-143 RemovalOptical PICK-UP ASSY, REC Board Removal CLV Board RemovalBattery Case Assy Removal Power BOARD, Switch Board RemovalSwitch Unit with JOG Dial Removal Test Mode Volume Servo ModeStructure of Servo Mode Adjusting Method Cluster DisplayAudio Mode Structuer of Audio ModePower supply Mode Mecha ModeStructure of Mecha Mode Structure of Power Supply ModeGeneral Adjustment Mode Structure of General Adjustment ModeSide B Section AdjustmentsSide a Laser Power Check Low Reflection CD Traverse Adjustment Adjustment Location Section Diagrams Pin No Pin name DescriptionAvss IC801 System Control CXP81960M-652R KEY3 MIC Block DiagramCircuit Boards Location Waveforms Schematic Diagram Main 1/3 SectionRefer to page 61 for IC Block Diagram Schematic Diagram Main 2/3 Section Refer to page 62 for IC Block DiagramsSchematic Diagram Main 3/3 Section Refer to page 64 for IC Block DiagramsIC Block Diagrams Main 1/3 Section IC501 CXA2523AR-T4 IC806 MB3800PNF IC Block Diagrams Main 2/3 Section IC804 DS1302ZIC506 MPC18A20VM IC802 RS5RJ29261 IC807 AK93C45AV-LIC Block Diagram Main 3/3 Section IC303 AK4515-VQ Section Exploded Views Upper PANEL, Bottom Panel SectionChassis Section 53 A-3293-759-A Switch BOARD, Complete55 A-3293-758-A Power BOARD, Complete 75 4-997-493-01 Spring LOCK,COMPRESSIONMotor Spindle Mechanism Deck Section124 4-972-546-01 Spring Worm GEAR,COMPRESSION Section Electrical Parts List CLV MainMain TantalumFerrite Bead ELEMENT, StorageDiode Inductor 0UHRES,CHIP Except FRMain Power Power REC Switch Sony Corporation
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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.