Sony MDS-S50 specifications Table of Contents, Disassembly, Diagrams, Exploded Views

Page 4

MDS-JE470

Display

 

 

 

 

 

History

 

 

 

 

 

 

spdl change

Mode for erasing the total spdl rp tm time

 

These histories are based on the time of replacement of the spindle motor. If the spindle motor has been replaced,

 

perform this procedure and erase the history.

 

Procedure

 

1.

Press the

lAMSL

knob when displayed as “spdl change”

 

 

 

 

 

 

2.

Press the

YES

button when the display changes to “spdl change?”

 

When “Complete!” is displayed, it means erasure has completed.

 

 

 

 

 

 

 

Table of Error Codes

Error Code

Description

 

 

10

Could not load

 

 

12

Loading switches combined incorrectly

 

 

20

Timed out without reading the top of PTOC

 

 

21

Could read top of PTOC, but detected error

 

 

22

Timed out without accessing UTOC

 

 

23

Timed out without reading UTOC

 

 

24

Error in UTOC

 

 

30

Could not start playback

 

 

31

Error in sector

 

 

40

Retry cause generated during normal recording

 

 

41

Retried in DRAM overflow

 

 

42

Retry occurred during TOC writing

 

 

43

Retry aborted during S.F editing

 

 

50

Other than access processing, and could not read address.

 

 

51

Focus NG occurred and overran.

 

 

MODEL IDENTIFICATION

— BACK PANEL —

Part No.

 

MODEL

PARTS No.

 

 

AEP, UK models

4-233-025-0s

 

 

US model

4-233-025-1s

 

 

CND model

4-233-025-2s

 

 

SP models

4-233-025-3s

 

 

HK model

4-233-025-4s

 

 

AUS model

4-233-025-5s

 

 

• Abbreviation

 

CND

: Canadian model

 

SP

: Singapore model

 

HK

: Hong Kong model

 

AUS

: Australian model

 

 

TABLE OF CONTENTS

 

1. SERVICING NOTES

5

2. GENERAL

12

3. DISASSEMBLY

 

3-1.

Disassembly flow

13

3-2.

Upper Case (408226)

14

3-3.

Front Panel Section

14

3-4.

Main Board

15

3-5. PT Board, VOL-SEL Board (SP model)

15

3-6.

Mechanism Deck Section ( MDM-7A)

16

3-7. Over Light Head (HR901), BD Board

16

3-8.

Holder Assy

17

3-9.

Loading Motor Assy (M103)

17

3-10. Sled Motor Assy (M102), Slider

18

3-11. Optical Pick-up

18

3-12. Spindle Moter Assy (M101)

19

4. TEST MODE

20

5. ELECTRICAL ADJUSTMENTS

25

6. DIAGRAMS

 

6-1. Circuit Boards Location

36

6-2. Block Diagrams

 

• BD Section

38

• Main Section

39

6-3. Printed Wiring Board – BD Board –

40

6-4. Schematic Diagram – BD Section (1/2) –

41

6-5. Schematic Diagram – BD Section (2/2) –

42

6-6. Schematic Diagram – Main Section (1/2) –

43

6-7. Schematic Diagram – Main Section (2/2) –

44

6-8. Printed Wiring Board – Main Section –

45

6-9. Printed Wiring Board – Display Section –

46

6-10. Schematic Diagram – Display Section –

47

6-11.

Printed Wiring Board – Power Section –

48

6-12. Schematic Diagram – Power Section –

49

6-13. IC Block Diagrams

50

6-14. IC Pin Functions

52

7. EXPLODED VIEWS

 

7-1. Chassis Section

59

7-2. Front Panel Section

60

7-3. Mechanism Section-1 (MDM-7A)

61

7-4. Mechanism Section-2 (MDM-7A)

62

8. ELECTRICAL PARTS LIST

63

4

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Contents Specifications 873-891-11SELF-DIAGNOSIS Function MDS-JE470Three- or five Digit code Cause/Remedy Message Items of Error History Mode Items and Contents Table of Contents DisassemblyDiagrams Exploded ViewsMDS-JE470 Section Service Notes Safety CHECK-OUTFlexible Circuit Board Repairing LeakageJIG for Checking BD Board Waveform IOPRecord Precedure KSN-260E Optical PICK-UP Block Type DiscriminationForced Reset Checks Prior to Parts Replacement and AdjustmentsMain Board Component Side Retry Cause Display Mode Bit BinaryHigher Bits Lower Bits Hexa Details Bit When BinaryHexadecimal Binary MDS-JE470 Section General Button DescriptionsMDS-JE470 Section Disassembly Disassembly FlowFront Panel Section Main Board PT BOARD, VOL-SEL Board SP modelMechanism Deck Section MDM-7A Over Light Head HR901, BD BoardHolder Assy Loading Motor Assy M103Sled Motor Assy M102, Slider Optical PICK-UPSpindle Moter Assy M101 MDS-JE470 Section Test Mode Precautions for USE of Test ModeSetting the Test Mode Exiting the Test ModeSelecting the Test Mode DisplayOperating the Continuous Playback Mode MENU/NOTest Mode Displays Mode displayError rate display Functions of Other ButtonsWhen Memory NG is Displayed Meanings of Other DisplaysAutomatic SELF-DIAGNOSIS Function InformationParts Replacement and Adjustment MDS-JE470 Section Electrical AdjustmentsCheck before replacement Adjustment flow Precautions for USE of Optical PICK- UP KMS-260B/260E Precautions for Checking Laser Diode EmissionPrecautions for Adjustments Using the Continuously Recorded Disc Checks Prior to RepairsAuto Check Other ChecksTraverse Check Traverse WaveformPlay Check MO Error Rate Check CD Error Rate CheckFocus Bias Check Self-Recording/playback CheckTemperature Compensation Offset Adjutment Initial Setting of Adjustment ValueLaser Power Adjustment Traverse Adjustment Iop NV SaveFocus Bias Adjustment Error Rate Check Auto Gain Control Output Level AdjustmentCD Auto Gain Control Output Level Adjustment MO Auto Gain Control Output Level AdjustmentAdjusting Points and Connecting Points MDS-JE470 Section Diagrams Circuit Boards LocationFor schematic diagrams For printed wiring boardsBD Board Main BoardIC171 Block Diagrams BD SectionIC190 IC360 2/2 Main SectionIC1 2/2 SemiconductorOVER SemiconductorBoard Board Main Display Board Schematic Diagram Main /2 See page 51 for IC Block DiagramsIC1 KEY-SW Board Schematic Diagram Display Section Indicator TubePT Board 230VSchematic Diagram Power Section IC Block Diagrams IC101 CXA2523AR BD BoardIC500 AK4524 Main Board IC101 CXA2523AR RF Amplifier BD Board IC PIN Function DescriptionPin No Pin Name Description Pin No Pin Name Desription SqsyMvci Abbreviation EFM Eight to Fourteen Modulation IC1 M30803MG-107FP System Control Main Board ADA. Latch STB Section Exploded Views Chassis SectionFL750 Mechanism MDM-7A M101 Electrical Parts List CoilsMetal Chip Display MDS-JE470 KEY-SW MainMDS-JE470 Main CN2TC7WHU04FUTE12R MDS-JE470 Main VOL-SEL Screw +KTP 2X6 TYPE2 NON-SLITMDS-JE470 MDS-JE470 Revision History

MDS-S50 specifications

The Sony MDS-S50 is a pinnacle of MiniDisc technology, offering audiophiles a compact and reliable way to enjoy high-quality audio. Launched in the early 2000s, it epitomizes the innovation that Sony was known for during this period, combining functionality with sleek design.

One of the primary features of the MDS-S50 is its ability to record in SP (Standard Play) mode, which delivers high-resolution audio at 64 kbps, and LP (Long Play) mode for extended recording times. This flexibility makes it suitable for various listening preferences, whether for critical listening or casual playback during everyday activities. The device harnesses the precision of digital audio encoding, ensuring minimal loss of sound quality.

The MDS-S50 stands out with its direct digital recording capabilities. By connecting to external audio sources via optical or coaxial digital inputs, users can preserve the integrity of the original sound. This feature is particularly appealing for those who want to capture live recordings or transfer vinyl records and CDs to the MiniDisc format without degradation.

The inclusion of a user-friendly interface, with an intuitive remote control and well-organized menu systems, enhances the experience for users. The display panel gives clear information on track titles, remaining recording time, and other essential details, allowing for seamless navigation through complex playlists or recording options.

Another notable technology in the MDS-S50 is the ATRAC (Adaptive Transform Acoustic Coding) compression algorithm, developed by Sony. This proprietary encoding format optimizes sound quality while significantly reducing file sizes. The result is a perfect balance between audio fidelity and efficient storage, which was a major advantage during the era of burgeoning digital music.

Furthermore, the MDS-S50 boasts a durable build quality, designed to withstand transport and everyday use. Its compact size, combined with lightweight materials, allows users to take it on the go while not compromising on audio quality.

Ultimately, the Sony MDS-S50 remains a beloved device among music enthusiasts. With its combination of high-quality recording capabilities, advanced digital encoding technology, and user-friendly features, it represents a unique chapter in the evolution of portable audio. Whether used as a standalone player or part of a larger audio setup, it delivers a level of performance that still resonates with those who appreciate the art of music.
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