Sony MDS-JE520 Service Manual

– 1 –
MICROFILM
MDS-JE520
SPECIFICATIONS
SERVICE MANUAL
MINIDISC DECK
— Continued on next page —
Model Name Using Similar Mechanism NEW
MD Mechanism Type MDM-5A
Optical Pick-up Type KMS-260A/J1N
US Model
Canadian Model
AEP Model
UK Model
E Model
Australian Model

Sony MDS-JE520 Specifications

General

Dynamic Range	96 dB
Sampling Frequency	44.1 kHz
Recording Format	ATRAC
Playback Format	ATRAC
Headphone Output	Yes
Type	MiniDisc Player
Frequency Response	5 Hz to 20 kHz
Inputs	Optical, Coaxial, Analog (RCA)
Outputs	Optical, Analog (RCA)
Playback System	ATRAC
Wow and Flutter	Below measurable limit
Power Supply	AC 230V, 50/60Hz

Summary

SELF-DIAGNOSIS FUNCTION

Self-Diagnosis Function

Procedure for using the Self-Diagnosis Function (Error History Display Mode)

Details steps to use the error history display mode for servicing.

ITEMS OF ERROR HISTORY MODE ITEMS AND CONTENTS

Table of Error Codes

Lists and describes various error codes for the unit.

SAFETY-RELATED COMPONENT WARNING!!

SAFETY CHECK-OUT

LEAKAGE

Details checks for AC leakage from exposed metal parts to earth.

SECTION 1 SERVICING NOTE

JIG FOR CHECKING BD BOARD WAVEFORM

LASER POWER METER

IOP DATA RECORDING AND DISPLAY WHEN PICKUP AND NON-VOLATILE MEMORY (IC171 OF BD BOARD) ARE REPLACED

Procedure for recording and displaying IOP data on the BD board.

CHECKS PRIOR TO PARTS REPLACEMENT AND ADJUSTMENTS

FORCED RESET

Procedure to reset the system microprocessor.

RETRY CAUSE DISPLAY MODE

Reading the Track Mode Display

Basic Operations

Notes on Recording

Adjusting the Recording Level

Locating a Specific Track

Locating a Particular Point in a Track

Adjusting the analog signal level

Editing Recorded MDs

Erasing Recordings (Erase Function)

Erasing a single track

Erasing all tracks on an MD

Erasing a Part of a Track (A-B Erase Function)

Dividing Recorded Tracks (Divide Function)

Combining Recorded Tracks (Combine Function)

Moving Recorded Tracks (Move Function)

Copying a track or disc title

Changing an existing title

Erasing a title on a disc (Name Erase)

Erasing all titles on a disc (Name All Erase)

Undoing the Last Edit (Undo Function)

SECTION 3 DISASSEMBLY

3-1. CASE AND FRONT PANEL

Procedure for disassembling the case and front panel.

3-2. SLIDER (CAM)

3-3. BASE UNIT (MBU-5A) AND BD BOARD

3-4. SW BOARD AND LOADING MOTOR (M103)

SECTION 4 TEST MODE

4-1. PRECAUTIONS FOR USE OF TEST MODE

Important safety precautions before using the test mode.

4-2. SETTING THE TEST MODE

4-3. EXITING THE TEST MODE

4-4. BASIC OPERATIONS OF THE TEST MODE

4-5. SELECTING THE TEST MODE

4-5.1. Operating the Continuous Playback Mode

4-5.2. Operating the Continuous Recording Mode

4-5.3. Non-Volatile Memory Mode (EEP MODE)

4-6. FUNCTIONS OF OTHER BUTTONS

4-7. TEST MODE DISPLAYS

SECTION 5 ELECTRICAL ADJUSTMENTS

5-1. PARTS REPLACEMENT AND ADJUSTMENT

Flowchart for parts replacement and subsequent adjustments.

5-2. PRECAUTIONS FOR CHECKING LASER DIODE EMISSION

5-3. PRECAUTIONS FOR USE OF OPTICAL PICK-UP

5-4. PRECAUTIONS FOR ADJUSTMENTS

5-5. CREATING CONTINUOUSLY RECORDED DISC

5-6. CHECKS PRIOR TO REPAIRS

5-6-1. Temperature Compensation Offset Check

Procedure for temperature compensation offset check.

5-6-3. Traverse Check

Procedure for traverse check.

5-6-2. Laser Power Check

Procedure for laser power check.

5-6-4. Focus Bias Check

Procedure for focus bias check.

5-6-5. C PLAY Checking

Procedure for C PLAY check.

5-6-6. Self-Recording/playback Check

Procedure for self-recording/playback check.

5-7. INITIAL SETTING OF ADJUSTMENT VALUE

5-8. RECORDING AND DISPLAYING THE IOP INFORMATION

5-9. TEMPERATURE COMPENSATION OFFSET ADJUTMENT

5-10. LASER POWER ADJUSTMENT

5-11. TRAVERSE ADJUSTMENT

5-12. FOCUS BIAS ADJUSTMENT

5-13. ERROR RATE CHECK

5-13-1. CD Error Rate Check

Procedure for CD error rate check.

5-13-2. MO Error Rate Check

Procedure for MO error rate check.

5-14. FOCUS BIAS CHECK

5-15. AUTO GAIN CONTROL OUTPUT LEVEL ADJUSTMENT

5-15-1. CD Auto Gain Control Output Level Adjustment

Procedure for CD auto gain control adjustment.

5-15-2. MO Auto Gain Control Output Level Adjustment

Procedure for MO auto gain control adjustment.

5-15. ADJUSTING POINTS AND CONNECTING POINTS

SECTION 6 DIAGRAMS

6-2. BLOCK DIAGRAMS

- BD SECTION -

- MAIN SECTION -

WAVEFORMS

- BD BOARD (1/2)

- BD BOARD (2/2)

- MAIN BOARD

6-3. PRINTED WIRING BOARD - BD SECTION

6-4. SCHEMATIC DIAGRAM - BD SECTION - (1/2)

6-5. SCHEMATIC DIAGRAM - MAIN SECTION - (1/2)

6-6. PRINTED WIRING BOARD - MAIN SECTION

6-7. PRINTED WIRING BOARD - PANEL SECTION

6-8. SCHEMATIC DIAGRAM - PANEL SECTION

6-9. SCHEMATIC DIAGRAM – BD SWITCH SECTION

6-10. PRINTED WIRING BOARD – BD SWITCH SECTION

6-11. IC BLOCK DIAGRAMS

- BD section

- MAIN section

6-12. IC PIN FUNCTIONS

• IC101 RF Amplifier (CXA2523R)

• IC121 Digital Signal Processor, Digital Servo Signal Processor, EFM/ACIRC Encoder/Decoder, Shock-proof Memory Controller, ATRAC Encoder/Decoder, 2M Bit DRAM (CXD2654R)

• IC307 A/D, D/A converter (CXD8607N)

• IC501 System Control (M30610MCA-251FP)

SECTION 7 EXPLODED VIEWS

7-3. MECHANISM SECTION (MDM-5A)

7-4. BASE UNIT SECTION (MBU-5A)

SECTION 8 ELECTRICAL PARTS LIST

BD BD MOUNTED BOARD, COMPLETE