Sony MZ-R50 service manual IC Block Diagram Main 3/3 Section IC303 AK4515-VQ

Page 46

rIC BLOCK DIAGRAM – MAIN (3/3) SECTION –

 

IC303 AK4515-VQ

 

 

 

 

 

 

 

 

 

 

PGAL

PGAR

 

VCML

ADCL

ADCR

VCMR

 

 

 

 

36

31

 

34

35

32

33

 

 

 

 

 

 

 

 

 

 

 

18

VD

LIN1

44

 

 

 

 

 

 

 

17

DGND

 

 

 

 

 

 

 

 

 

46

XRST

LIN2

41

 

 

 

 

 

 

 

47

±±±

 

 

 

 

 

ADC

 

PD

LIN3

38

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RIN1

43

 

 

 

 

 

 

 

 

 

RIN2

40

 

 

 

 

 

 

 

 

 

RIN3

37

 

 

 

 

 

 

 

2

LRCK

 

 

 

 

 

 

 

3

BCLK

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Audio I/F

4

SDTO

 

 

 

 

 

 

 

 

5

SDTI

VCOM

22

 

 

 

 

 

 

Controller

 

 

 

 

 

 

 

 

 

6

DIF0

 

 

 

 

 

 

 

 

 

7

DIF1

 

 

 

 

 

 

 

 

 

24

DZF

LOUT

26

 

 

 

 

 

 

 

 

 

ROUT

25

DAC

 

 

DBB

 

DPGA

 

 

 

 

 

 

 

 

 

 

 

 

VRDA

27

 

 

 

 

 

 

 

42

TST1

 

 

 

 

 

 

 

39

TST2

VA

20

 

 

 

 

 

 

 

 

 

 

 

 

 

 

8

TST3

VB

19

CONTROL REGISTER

 

CLOCK

 

9

TST4

AGND

21

 

I/F

 

 

 

DRIVER

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

10

13

14

16

15

45

1

48

 

 

 

AGND

±±

CCLK

 

CDTO

 

MCLK

CMODE

 

 

 

CS

CDTI

SSB

 

 

– 64 –

Image 46
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 Structure of Servo Mode Servo ModeVolume 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 a Section AdjustmentsSide B Laser Power Check Low Reflection CD Traverse Adjustment Adjustment Location Section Diagrams Pin No Pin name DescriptionAvss IC801 System Control CXP81960M-652R KEY3 Circuit Boards Location Block DiagramMIC Refer to page 61 for IC Block Diagram Schematic Diagram Main 1/3 SectionWaveforms 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 IC506 MPC18A20VM IC Block Diagrams Main 2/3 Section IC804 DS1302ZIC806 MB3800PNF 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,COMPRESSION124 4-972-546-01 Spring Worm GEAR,COMPRESSION Mechanism Deck SectionMotor Spindle 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.