Sony MDS-S40 Service Manual
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Sony MDS-S40 Service Manual

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SERVICE MANUAL
U.S. and foreign patents licensed form Dolby Laboratories
Licensing Corporation.
MICROFILM
Photo: Silver model
Model Name Using Similar Mechanism
MD Mechanism Type
Optical Pick-up Type
SPECIFICATIONS
MDS-S40
Canadian Model
AEP Model
Australian Model
– Continued on next page –
MINIDISC DECK
US Model
UK Model
E Model
MDS-JE520
MDM-5A
KMS-260A/J1N

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  • Page 1 MDS-S40 SERVICE MANUAL US Model Canadian Model AEP Model UK Model E Model Australian Model Photo: Silver model Model Name Using Similar Mechanism MDS-JE520 U.S. and foreign patents licensed form Dolby Laboratories Licensing Corporation. MD Mechanism Type MDM-5A Optical Pick-up Type...

  • Page 2: Self-Diagnosis Function

    • Audio connecting cords (2) • Optical cable (1) • Remote commander (remote) RM-D29M (1) • R6 (size-AA) batteries (2) SELF-DIAGNOSIS FUNCTION The self-diagnosis function consists of error codes for customers which are displayed automatically when errors occur, and error codes which show the error history in the test mode during servicing.
  • Page 3 Items of Error History Mode Items and Contents Selecting the Test Mode Display Details of History total rec Displays the recording time. Displayed as “rππππππh”. The displayed time is the total time the laser is set to the high power state. This is about 1/4 of the actual recording time.

  • Page 4: Table Of Contents

    SECTION 1 SERVICING NOTES TABLE OF CONTENTS SAFETY CHECK-OUT After correcting the original service problem, perform the follow- ing safety check before releasing the set to the customer: SELF-DIAGNOSIS FUNCTION ........2 Check the antenna terminals, metal trim, “metallized” knobs, screws, and all other exposed metal parts for AC leakage.
  • Page 5 OPERATION. REPLACE THESE COMPONENTS WITH DE FONCTIONNEMENT. NE REMPLACER CES COM- SONY PARTS WHOSE PART NUMBERS APPEAR AS POSANTS QUE PAR DES PIÈCES SONY DONT LES SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUB- NUMÉROS SONT DONNÉS DANS CE MANUEL OU LISHED BY SONY.
  • Page 6 JIG FOR CHECKING BD BOARD WAVEFORM The special jig (J-2501-149-A) is useful for checking the waveform of the BD board. The names of terminals and the checking items to be performed are shown as follows. GND : Ground I+3V : For measuring IOP (Check the deterioration of the optical pick-up laser) IOP : For measuring IOP (Check the deterioration of the optical pick-up laser) TEO : TRK error signal (Traverse adjustment) VC : Reference level for checking the signal...
  • Page 7 IOP DATA RECORDING AND DISPLAY WHEN OPTICAL PICK-UP AND NON-VOLATILE MEMORY (IC171 OF BD BOARD) ARE REPLACED The IOP value labeled on the optical pick-up can be recorded in the non-volatile memory. By recording the value, it will eliminate the need to look at the value on the label of the optical pick-up.
  • Page 8 CHECKS PRIOR TO PARTS REPLACEMENT AND ADJUSTMENTS Before performing repairs, perform the following checks to determine the faulty locations up to a certain extent. Details of the procedures are described in “5 Electrical Adjustments”. Criteria for Determination Measure if unsatisfactory: (Unsatisfactory if specified value is not satisfied) Laser power check •...
  • Page 9 RETRY CAUSE DISPLAY MODE • In this test mode, the causes for retry of the unit during recording can be displayed on the fluorescent indicator tube. During playback, the “track mode” for obtaining track information will be set. This is useful for locating the faulty part of the unit. •...
  • Page 10 Reading the Retry Cause Display Higher Bits Lower Bits Hexa- Details Hexadecimal decimal When 0 When 1 b7 b6 b5 b4 b3 b2 b1 b0 Binary Emphasis OFF Emphasis ON Monaural Stereo This is 2-bit display. Normally 01. 01:Normal audio. Others:Invalid Audio (Normal) Invalid Original...

  • Page 11: General

    SECTION 2 This section is extracted from instruction manual. GENERAL – 11 –...

  • Page 12: Disassembly

    SECTION 3 DISASSEMBLY Note: Follow the disassembly procedure in the numerical order given. COVER 2 cover 1 two screws (CASE 3 TP2) 1 two screws (CASE 3 TP2) FRONT PANEL SECTION 3 three claws 1 wire (flat type) (21 core) (PANEL-MAIN) (CN421) 4 front panel section 2 three screws...
  • Page 13 MAIN/PT BOARD 1 power cord connector (CN901) 1 connector 4 connector (CN912) (CN502) 2 six screws (PTTWH3 × 6) 5 wire (flat type) (21 core) (BD-MAIN) (CN411) 5 wire (flat type) (21 core) (PANEL-MAIN) (CN421) 3 PT board 5 wire (flat type) (23 core) (CN501) 1 connector (CN921)
  • Page 14 SLIDER (CAM) 7 slider (Cam) • Note for Installation of Slider A (Cam) Set the shaft of Cam gear to 3 bracket (Guide L) be at the position in the figure. 1 two screws (P2.6 × 6) 4 harnes Set the shaft of Lever (O/C) to be at the position in the figure.
  • Page 15 SW BOARD, LOADING MOTOR (M103) 1 screw (PTPWH M2.6 × 6) 2 gear (B) 3 two screws (PWH1.7 × 4) 4 loading motor (M103) 6 SW board 5 three screws (BTP2.6 × 6) – 15 –...

  • Page 16: Test Mode

    SECTION 4 TEST MODE 1. PRECAUTIONS FOR USE OF TEST MODE • As loading related operations will be performed regardless of the test mode operations being performed, be sure to check that the disc is stopped before setting and removing it. [     EJECT] Even if the button is pressed while the disc is rotating during continuous playback, continuous recording, etc., the disc will...

  • Page 17: Selecting The Test Mode

    5. SELECTING THE TEST MODE There are 31 types of test modes as shown below. The groups can be switched by turn the = ˜ + knob. After selecting the group [YES] button. After setting a certain group, turn the = ˜ + knob switches between these modes. to be used, press the Refer to “Group”...
  • Page 18 5-1. Operating the Continuous Playback Mode 1. Entering the continuous playback mode (1) Set the disc in the unit. (Whichever recordable discs or discs for playback only are available) (2) Turn the = ˜ + knob and display “CPLAY MODE” (C30). [YES] (3) Press the button to change the display to “CPLAY MID”.
  • Page 19 6. FUNCTIONS OF OTHER BUTTONS Function Contents Sets continuous playback when pressed in the STOP state. When pressed during continuous playback, the tracking servo turns ON/OFF. Stops continuous playback and continuous recording. The sled moves to the outer circumference only when this is pressed. The sled moves to the inner circumference only when this is pressed.
  • Page 20 MEANINGS OF OTHER DISPLAYS Contents Display When Lit When Off During continuous playback (CLV: ON) STOP (CLV: OFF) Tracking servo OFF Tracking servo ON Recording mode ON Recording mode OFF SYNC CLV low speed mode CLV normal mode L.SYNC ABCD adjustment completed OVER Tracking offset cancel ON Tracking offset cancel OFF...

  • Page 21: Electrical Adjustments

    SECTION 5 ELECTRICAL ADJUSTMENTS 1. PARTS REPLACEMENT AND ADJUSTMENT • Check and adjust the mechanism deck as follows. The procedure changes according to the part replaced • Abbreviation : Optical pick-up OWH : Overwrite head • Temperature compensation offset check •...
  • Page 22 2. PRECAUTIONS FOR CHECKING LASER DIODE 4. Use the following tools and measuring devices. • Check Disc (MD) TDYS-1 EMISSION (Parts No. 4-963-646-01) To check the emission of the laser diode during adjustments, never • TEST DISK (MDW-74/AU-1) (Parts No. 8-892-341-41) view directly from the top as this may lose your eye-sight.
  • Page 23 [YES] 6. CHECK PRIOR TO REPAIRS Note 1: After step 4, each time the button is pressed, the display will be switched between “LD 0.7 mW $ ”, “LD 6.2 mW $ These checks are performed before replacing parts according to ”, and “LD Wp ”.
  • Page 24 [YES] 9. Press the button display “EFB = MO-P”. 6-4. Focus Bias Check Then, the optical pick-up moves to the pit area automatically Change the focus bias and check the focus tolerance amount. and servo is imposed. Checking Procedure : 10.
  • Page 25 7. INITIAL SETTING OF ADJUSTMENT VALUE 9. TEMPERATURE COMPENSATION OFFSET ADJUSTMENT Note: Save the temperature data at that time in the non-volatile memory Mode which sets the adjustment results recorded in the non-volatile as 25 ˚C reference data. memory to the initial setting value. However the results of the tempera- Note : ture compensation offset adjustment will not change to the initial setting 1.
  • Page 26 7. Then, turn the = ˜ + knob and display “LDPWR 11. TRAVERSE ADJUSTMENT CHECK” (C02). [YES] Note 1:Data will be erased during MO reading if a recorded disc is 8. Press the button once and display “LD 0.9 mW $ ”.
  • Page 27 [YES] 8. Turn the = ˜ + knob so that the waveform of the 18. Press the button, display “EFB = SAV” for a mo- oscilloscope becomes the specified value. ment and save the adjustment results in the non-volatile (When the = ˜ + knob is turned, the of “EFB- memory.
  • Page 28 13. ERROR RATE CHECK 15. AUTO GAIN CONTROL OUTPUT LEVEL 13-1. CD Error Rate Check ADJUSTMENT Checking Procedure : Be sure to perform this adjustment when the pickup is replaced. 1. Load the check disc (MD) TDYS-1. If the adjustment results becomes “Adjust NG!”, the pickup may 2.
  • Page 29 Adjustment Location: – BD BOARD (Side A) – CN101 D101 CN110 I+3V NOTE IC171 – BD BOARD (Side B) – IC101 IC121 IC192 Note: It is useful to use the jig. for checking the waveform. (Refer to Servicing Notes on page 6) –...

  • Page 30: Diagrams

    SECTION 6 DIAGRAMS 6-1. IC PIN FUNCTION DESCRIPTION • BD BOARD IC101 CXA2523AR (RF AMP, FOCUS/TRACKING ERROR AMP) Pin No. Pin Name Description I-V converted RF signal I input from the optical pick-up block detector I-V converted RF signal J input from the optical pick-up block detector Middle point voltage (+1.65V) generation output terminal 4 to 9 A to F...
  • Page 31 • BD BOARD IC121 CXD2654R (DIGITAL SIGNAL PROCESSOR, DIGITAL SERVO PROCESSOR, EFM/ACIRC ENCODER/DECODER, SHOCK PROOF MEMORY CONTROLLER, ATRAC ENCODER/DECODER) Pin No. Pin Name Description Focus OK signal output to the system controller (IC501) MNT0 (FOK) “H” is output when focus is on (“L”: NG) MNT1 (SHOCK) Track jump detection signal output to the system controller (IC501) MNT2 (XBUSY)
  • Page 32 Pin No. Pin Name Description Address signal output to the D-RAM (IC124) XRAS Row address strobe signal output to the D-RAM (IC124) “L” active Write enable signal output to the D-RAM (IC124) “L” active Two-way data bus with the D-RAM (IC124) I (S) MVCI Digital in PLL oscillation input from the external VCO Not used (fixed at “L”)
  • Page 33 Pin No. Pin Name Description Clock signal (176.4 kHz) output terminal (X’tal system) Not used (open) SRDR Sled servo drive PWM signal (–) output to the BH6511FS (IC152) SFDR Sled servo drive PWM signal (+) output to the BH6511FS (IC152) SPRD Spindle servo drive PWM signal (–) output to the BH6511FS (IC152) SPFD...
  • Page 34 • MAIN BOARD IC501 M30620MC-400FP (SYSTEM CONTROLLER) Pin No. Pin Name Description 1, 2 Not used (open) Monitor output terminal for the test C1 error rate is output when test mode ADER Monitor output terminal for the test ADER is output when test mode Subcode Q sync (SCOR) input from the CXD2654R (IC121) SQSY “L”...
  • Page 35 Pin No. Pin Name Description Pin No. Pin Name Description Detection input from the disc chucking-in detect switch “L”: chucking Recording data output enable signal output to the CXD2654R (IC121) and overwrite head CHACK IN SCTX Not used (fixed at “H”) driver (IC181) Writing data transmission timing output (Also serves as the magnetic head on/off output) Not used (open)

  • Page 36: Block Diagram - Servo Section

    MDS-S40 6-2. BLOCK DIAGRAM – SERVO Section – DIGITAL SIGNAL PROCESSOR, EFM/ACIRC ENCODER/DECODER, IC121 (1/2) SHOCK PROOF MEMORY CONTROLLER, ATRAC ENCODER/DECODER OVER WRITE IC121 (1/2) EFMO ADDT ADDT HEAD DRIVE (Page 39) IC181, Q181, 182 DATAI HR901 OVER WRITE HEAD...

  • Page 37: Block Diagram - Main Section

    MDS-S40 6-3. BLOCK DIAGRAM – MAIN Section – A/D, D/A CONVERTER IC301 • SIGNAL PATH J101 : PLAY (ANALOG OUT) : REC (ANALOG IN) VINL1 DIGITAL MIXER, ADDT DATAO 0dB/6dB LINE DECIMATION CONVERTER VINR1 SWITCH ANALOG IN FILTER BLOCK (Page 38)

  • Page 38: Note For Printed Wiring Boards And Schematic Diagrams

    • Circuit Boards Location 6-4. NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS PT board Note on Printed Wiring Board: Note on Schematic Diagram: SW board • X : parts extracted from the component side. • All capacitors are in µF unless otherwise noted. pF: µµF •...

  • Page 39: Printed Wiring Board - Bd Board

    MDS-S40 6-5. PRINTED WIRING BOARD – BD Board – • See page 41 for Circuit Boards Location. S102 REFLECT DET, PROTECT DET LOW REFLECT RATE/ UNPROTECT (SLIDE) HIGH REFLECT RATE/ WRITE PROTECT (SPINDLE) (Page 55) (Page 56) • Semiconductor • Semiconductor...

  • Page 40: Schematic Diagram - Bd Board (1/2)

    MDS-S40 6-6. SCHEMATIC DIAGRAM – BD Board (1/2) – • See page 65 for Waveforms. • See page 50 for IC Block Diagrams. (Page 47) (Page 47) (Page 47) (Page 48) (Page 48) (Page 48) (Page 48) – 45 –...

  • Page 41: Schematic Diagram – Bd Board (2/2)

    MDS-S40 6-7. SCHEMATIC DIAGRAM – BD Board (2/2) – • See page 65 for Waveforms. • See page 51 for IC Block Diagram. (Page 45) (Page 46) (Page 45) (Page 45) (Page 46) (Page 46) (Page 46) (Page 58) (Page 57) •...

  • Page 42: Schematic Diagram - Sw Board

    MDS-S40 6-8. SCHEMATIC DIAGRAM – SW Board – • IC Block Diagrams – BD Board – IC101 CXA2523AR 43 42 USROP – RF AGC – USRC RFA1 BPF3T RFA2 RFA3 PEAK3T – HLPT –1 – – –2 – (Page 57)
  • Page 43 IC121 CXD2654R – MAIN Board – IC301 µDA1341TS 100 99 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81 80 79 78 77 76 VSS(AD) 1 VREF 0dB/6dB VINL1 2 ADC1L VSS(DAC) SWITCH VDD(AD) 3...

  • Page 44: Printed Wiring Boards - Pt/Vol Sel Boards

    MDS-S40 6-10. PRINTED WIRING BOARDS – PT/VOL SEL Boards – • See page 41 for Circuit Boards Location. (Page 54) (Page (Page 55) (Page 55) – 53 – – 54 –...

  • Page 45: Printed Wiring Board - Main Board

    MDS-S40 6-11. PRINTED WIRING BOARD – MAIN Board – • See page 41 for Circuit Boards Location. (Page 54) (Page 44) (Page 44) (Page 49) (Page 54) (Page 61) • Semiconductor Location Ref. No. Location Ref. No. Location D390 IC301...

  • Page 46: Schematic Diagram - Main Board (1/2)

    MDS-S40 6-12. SCHEMATIC DIAGRAM – MAIN Board (1/2) – • See page 65 for Waveform. (Page 47) (Page 59) (Page 47) (Page 49) (Page 59) (Page 64) • Voltages and waveforms are dc with respect to ground under no-signal conditions.

  • Page 47: Schematic Diagram - Main Board (2/2), Pt/Vol Sel Boards

    MDS-S40 6-13. SCHEMATIC DIAGRAM – MAIN Board (2/2), PT/VOL SEL Boards – • See page 65 for Waveforms. • See page 52 for IC Block Diagrams. (Page 58) (Page 58) The components identified by mark ! or dotted Les composants identifiés par une marque ! sont •...

  • Page 48: Printed Wiring Board – Panel Board

    MDS-S40 6-14. PRINTED WIRING BOARD – PANEL Board – • See page 41 for Circuit Boards Location. (Page 55) • Semiconductor Location Ref. No. Location D741 D742 D751 A-10 IC761 IC781 B-10 Q741 Q742 Q751 Q767 Q791 – 61 –...

  • Page 49: Schematic Diagram - Panel Board

    MDS-S40 6-15. SCHEMATIC DIAGRAM – PANEL Board – • See page 65 for Waveform. (Page 57) • Voltages and waveforms are dc with respect to ground under no-signal conditions. no mark : STOP – 63 – – 64 –...

  • Page 50: Exploded Views

    4-216-768-11 BUTTON (EDIT) (for BLACK) 2 IC301 !™ (SYSCLK) 4-996-690-21 LID (CARTRIDGE) (for BLACK) 4-951-620-01 SCREW (2.6X8), +BVTP 4-962-708-71 EMBLEM (4-A), SONY 1-790-511-11 WIRE (FLAT TYPE) (21 CORE) (PANEL-MAIN) 4-216-754-01 KNOB (INPUT) (for SILVER) * 13 A-4724-597-A PANEL BOARD, COMPLETE (US, CND) 3.2 Vp-p...
  • Page 51 (2) CHASSIS SECTION UK, HK AEP, AED, SP, AR TR911 US, CND not supplied not supplied not supplied not supplied MDM-5A not supplied The components identified by Les composants identifiés par une mark ! or dotted line with marque ! sont critiques pour la mark ! are critical for safety.
  • Page 52 (3) MECHANISM SECTION (MDM-5A) M103 MBU-5A Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark * 201 1-668-111-11 SW BOARD 4-996-221-01 GEAR (B) * 202 4-996-217-01 CHASSIS 4-933-134-01 SCREW (+PTPWH M2.6X6) 4-996-224-01 SCREW (1.7X3), +PWH 4-996-223-11 INSULATOR (F) (BLACK) * 204 4-996-218-01 BRACKET (GUIDE R) 4-996-227-01 LEVER (HEAD)
  • Page 53 (4) BASE UNIT SECTION (MBU-5A) HR901 not supplied not supplied M101 S102 not supplied M102 The components identified by Les composants identifiés par une mark ! or dotted line with marque ! sont critiques pour la mark ! are critical for safety. sécurité.

  • Page 54: Electrical Parts List

    SECTION 8 ELECTRICAL PARTS LIST NOTE: • Due to standardization, replacements in the • Items marked “*” are not stocked since they The components identified by mark ! or dotted line with mark are seldom required for routine service. parts list may be different from the parts speci- ! are critical for safety.
  • Page 55 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark IC152 8-759-430-25 IC BH6511FS-E2 R140 1-216-029-00 METAL CHIP 1/10W IC171 8-759-487-04 IC BR24C02F-E2 R142 1-216-073-00 METAL CHIP 1/10W IC181 8-759-481-17 IC MC74ACT08DTR2 R143 1-216-073-00 METAL CHIP 1/10W IC192 8-759-460-72 IC BA033FP-E2 R144...
  • Page 56 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark < CAPACITOR > C512 1-164-159-11 CERAMIC 0.1uF C516 1-164-159-11 CERAMIC 0.1uF C101 1-162-290-31 CERAMIC 470PF C519 1-162-294-31 CERAMIC 0.001uF C102 1-126-964-11 ELECT 10uF C531 1-162-282-31 CERAMIC 100PF C181 1-128-551-11 ELECT 22uF...
  • Page 57 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark < INDUCTOR > R284 1-247-864-11 CARBON 1/4W R285 1-249-417-11 CARBON 1/4W FB356 1-412-473-21 INDUCTOR (SMALL TYPE) R286 1-249-417-11 CARBON 1/4W FB357 1-412-473-21 INDUCTOR (SMALL TYPE) R287 1-249-437-11 CARBON 1/4W <...
  • Page 58 MAIN PANEL Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R614 1-249-437-11 CARBON 1/4W R623 1-247-895-00 CARBON 470K 1/4W < TRANSISTOR > R624 1-249-437-11 CARBON 1/4W Q741 8-729-422-57 TRANSISTOR UN4111 R801 1-249-426-11 CARBON 5.6K 1/4W Q742 8-729-422-57 TRANSISTOR UN4111 R803...
  • Page 59 VOL SEL Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 1-672-979-11 PT BOARD ! 63 1-783-531-31 CORD, POWER (US, CND) ! 63 1-783-940-31 CORD, POWER (AR) ******** ! 64 1-569-008-21 ADAPTOR, CONVERSION 2P (SP) < CAPACITOR > 1-569-972-21 SOCKET, SHORT 2P (EXCEPT AR) ! C901 1-113-920-11 CERAMIC...
  • Page 60 MDS-S40 Sony Corporation 99C0588-1 Printed in Japan © 1999. 3 9-928-838-11 Home A&V Products Company Published by Quality Assurance Dept. – 76 – (Shinagawa)

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