Sony MDS-B6P Service Manual

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SERVICE MANUAL
MICROFILM
MDS-B6P
Model Name Using Similar Mechanism
MD Mechanism Type
Base Unit Type
Optical Pick-up Type
SPECIFICATIONS
— 1 —
US Model
Canadian Model
AEP Model
UK Model
MDS-B5
MDM-2B6P
MBU-2B6P
KMS-210A/J-N
— Continued on next page —
MD PLAYER

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Summary of Contents for Sony MDS-B6P

  • Page 1 MDS-B6P SERVICE MANUAL US Model Canadian Model AEP Model UK Model Model Name Using Similar Mechanism MDS-B5 MD Mechanism Type MDM-2B6P Base Unit Type MBU-2B6P Optical Pick-up Type KMS-210A/J-N SPECIFICATIONS — Continued on next page — MD PLAYER MICROFILM — 1 —...
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  • Page 3 REPLACE THESE COMPONENTS WITH SONY PARTS FONCTIONNEMENT. NE REMPLACER CES COMPOSANTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS QUE PAR DES PIÈCES SONY DONT LES NUMÉROS MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY. SONT DONNÉS DANS CE MANUEL OU DANS LES SUPPLÉMENTS PUBLIÉS PAR SONY.
  • Page 4: Table Of Contents

    TABLE OF CONTENTS 1. GENERAL 4. ELECTRICAL ADJUSTMENTS 2-1. Front Panel ................5 4-1. Precautions for Checking Laser Diode Emission ....34 4-2. Precautions for Use of Optical Pick-up (KMS-210A) ..34 2-2. Rear Panel ................6 4-3. Precautions for Adjustments ..........34 3-2.
  • Page 5: General

    SECTION 1 This section is extracted from instruction manual. GENERAL — 5 —...
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  • Page 29: Front Panel

    SECTION 2 DISASSEMBLY Note: Follow the disassembly procedure in the numerical order given. 2-1. CASE AND FRONT PANEL ASSEMBLY 1 Two screws (+B4x8) 3 Screw (+BVTT3x8) 4 Case 2 Two screws (+B4x8) 6 Wire (Flat type) (16 core) 7 Front panel assembly 5 Two screws (+BVTT3x8) 2-2.
  • Page 30: Mechanism Deck

    2-3. MECHANISM DECK 3 Rotate the pulley (BD) in the direction 4 Two screws of arrow A , and slide the slider (M) 1 Two screws (+B2.6x18) assembly in the direction of arrow B . (+B2.6x18) (As the stopper catches halfway, lightly 5 Two collares push up the stopper in the fig.
  • Page 31: Base Unit (Mbu-2Blp), Loading Motor Assembly

    2-5. BASE UNIT (MBU-2B6P), LOADING MOTOR ASSEMBLY 4 Belt (BD) 5 Two screws (+B2.6x5) 6 Connector (CN192) 1 Screw (+BVTP3x6) 7 Loading motor assembly 2 Two screws 3 MD base unit (MBU-2B6P) (+BVTP3x6) 2-6. SLIDER ASSEMBLY MOUNTING 4 Move the slider assembly in arrow direction B , and lock it to the lever (SLM).
  • Page 32: Setting The Test Mode

    SECTION 3 TEST MODE 3-1. Setting the Test Mode While pressing the AMS knob, turn POWER switch on, and release the AMS knob. 3-2. Exiting the Test Mode Turn POWER switch off. 3-3. Basic Operations of the Test Mode All operations are performed using the AMS knob, ENTER/YES button, and EDIT/NO button. The functions of these buttons are as follows.
  • Page 33: Functions Of Other Buttons

    3-5. Functions of Other Buttons Note : The erasing-protection tab is not detected during the test mode. Recording will start regardless of the position of the erasing-protection tab when the r (REC) button is pressed. 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.
  • Page 34: Electrical Adjustments

    SECTION 4 ELECTRICAL ADJUSTMENTS 4-1. Precautions for Checking Laser Diode 4-3. Precautions for Adjustments Emission 1) When replacing the following parts, perform the adjustments and checks with ® in the order shown in the following table. To check the emission of the laser diode during adjustments, never view directly from the top as this may lose your eye-sight.
  • Page 35: Temperature Compensation Offset Adjustment

    4-4. Temperature Compensation Offset Adjustment 4-5. Laser Power Adjustment Save the temperature data at that time in the non-volatile memory as Connection : Laser power 25 ˚C reference data. meter Note : 1. Usually, do not perform this adjustment. 2. Perform this adjustment in an ambient temperature of 22 ˚C to 28 ˚C.
  • Page 36: Traverse Adjustment

    4-6. Traverse Adjustment 11. Rotate the AMS knob until the waveform of the oscilloscope moves closer to the specified value. In this adjustment, waveform varies at intervals of approx. 3%. Connection : Adjust the waveform so that the specified value is satisfied as Oscilloscope much as possible.
  • Page 37: Focus Bias Adjustment

    4-7. Focus Bias Adjustment 4-8. Error Rate Check 4-8-1. CD Error Rate Check Adjusting Method : Checking Method : 1. Load a continuously recorded disc (MDW-74/AU-1). 1. Load a test disc TDYS-1. 2. Rotate the AMS knob and display “CPLAY MODE”. 2.
  • Page 38: Adjusting Points And Connecting Points

    4-10. Adjusting Points and Connecting Points [BD BOARD] (COMPONENT SIDE) D101 IC191 [BD BOARD] (CONDUCTOR SIDE) (IOP) (I + 5V) IC101 RV101 (VC) IC171 RV102 (TEO) IC121 — 38 —...
  • Page 39: Diagrams

    SECTION 5 DIAGRAMS 5-1. CIRCUIT BOARDS LOCATION ADIO board PIO board POWER board HP board 232C board JACK board DIG board D OUT board DETECTION SW board BD board A OUT board MOTOR board KEY board DISP board — 39 —...
  • Page 40: Block Diagrams

    MDS-B6P 5-2. BLOCK DIAGRAMS — POWER SECTION — POWER TRANSFROMER FL601 -32V REG IC11 -32V +10V IC955 (DUP OUT) IC956 (DUP IN) +5V/+6V REG REF. VOL. DISP5V +5V REG IC507 +5V REG +6V REG IC191 IC12 (BD) +5V REG IC14...
  • Page 41: Bd Section

    MDS-B6P — BD SECTION — SQSY DIGITAL SIGNAL PROCESSOR, DOUT DIGITAL SERVO SIGNAL PROCESSOR, EFM/ACIRC ENCODER/DECODER IC121 EEP ROM 51 52 49 53 IC171 SQSY DIDT SUBCODE DIGITAL PROCESSOR, AUDIO READER/ DODT IN/OUT GENERATOR RF AMP IC101 46 45 44 43...
  • Page 42 MDS-B6P —DIGITAL SECTION— (Page 47) ABCK ABCK ALRCK ALRCK REMOTE DODT DOUT SECTION ADIN DUPLICATION (Page 45) SECTION D-RAM SWITCH IC402 DIG IN/OUT IC411 IC871 J803 IEC (958) DQ1 - DQ4 A0 - A11 2 3 22 23 4 5 21 20...
  • Page 43 MDS-B6P — REMOTE SECTION — LOADING MOTOR DRIVE I/O EXPANDER IC309 IC304 LOUT (Page 43) DIGITAL SECTION LEVEL METER SECTION IC305 LDON (Page 42) SYSTEM CONTROL BUFFER IC301 (2/2) IC314 DODT DATA RQEN ABCK KDATA LERES DUPLICATION ALRCK LRCK SECTION...
  • Page 44: Digital Section

    MDS-B6P — DUPLICATION SECTION — HIGH SPEED DUBBING DIGITAL OUT IC901 OUTACK OUTXABS OUTDATA DTO36 DUPLICATION CONTROLLER OUTARQ ACK36 XABS36 XARQ36 DTI36 AIRCPB INDATA INACK SRDT XLAT2 (Page 43) SRDT1 XLAT1 DIGITAL INXABS XLAT2 SRDT1 SECTION XLAT1 SRDT SRDT2 DIGXRES...
  • Page 54: Ic Pin Functions

    5-13. IC PIN FUNCTIONS • IC101 RF Amplifier (CXA1981AR) Pin No. Pin Name Function Middle point voltage (2.5V) generation output Input of signal from optical block detector 2 to 7 A to F F operation amplifier input F operation amplifier output Front monitor.
  • Page 55 • IC121 Digital signal procesor, digital servo processor, EFM/ACIRC encoder/decoder (CXD2535CR) Pin No. Pin Name Function FS256 11.2896 MHz clock output (MCLK) (Not used) Output of FOK signal to system controller (IC301) Outputs “H” when focus is set DFCT Outputs defect ON/OFF switching signal (Not used) SHCK Outputs track jump detection signal to system controller (IC301) SHCKEN...
  • Page 56 Pin No. Pin Name Function WFCK clock (7.35 kHz) signal output WFCK (Playback: EFM decoder PLL Recording: EFM encoder PLL) (Not used) GTOP “H”: Opens playback EFM frame sync protection window (Not used) “H”: Playback EFM sync and interpolation protection timing match (Not used) EFM decoder PLL clock output (98 fs=4.3218 MHz) XPLCK Falling edge and EFM signal edge match (Not used)
  • Page 57 Pin No. Pin Name Function TEST1 Test pin (Fixed at “L”) Input of ADIP dual FM signal from CXA1981AR (IC101) (22.05 kHz ±1 kHz) ADFG (TTL Schmidt input) TS25 Test pin (Fixed at “L”) LDDR Laser APC signal output TRDR Tracking servo drive signal output (–) TFDR Tracking servo drive signal output (+)
  • Page 58 • IC301 System Control (M30600E8FP) Pin No. Pin Name Function Function SHCK Jog detection input from the CXD2535CR Focus OK input from the CXD2535CR C1 error test output ADER, C2 ADER, C2 error test output SQSY SUBQ/ATIP sync input from the CXD2535CR SIRCS Wired remote control input PDOWN...
  • Page 59 Function Pin No. Pin Name External data bus hold input (Fixed to “H”) XHOLD External data bus hold output XHLDA Internal clock output (4.3 MHz) BCLK External data bus read request output External data bus odd address write request output XWRH External data bus even address write request output XWRL...
  • Page 60 • IC401 Shock-Proof Memory Controller, ATRAC Encoder/Decoder (CXD2536CR) Pin No. Pin Name Function Power supply (+5V) — SWDT Input of write data signal from system controller (IC301) Input of serial clock signal from system controller (IC301) XLAT Input of serial latch signal from system controller (IC301) SRDT Output of read data signal to system controller (IC301) SENSE...
  • Page 61 Pin No. Pin Name Function 48, 49 A11, A10 ªOutput of address signal to RAM (IC402) — Ground — Power supply (+5V) 52 to 55 A03 to A00 Output of address signal to RAM (IC402) 56 to 60 A04 to A08 Output of address signal to RAM (IC402) Output of output enable control signal to RAM (IC402) XCAS...
  • Page 62: Ic Block Diagrams

    5-14. IC BLOCK DIAGRAMS IC11 M5293L REFERENCE VOLTAGE REFERENCE ON/OFF – VOLTAGE OVERHEAT OVERCURRENT PROTECTION LIMITTER IC15 BA3960 REF. VOLTAGE – – IC16 SN74HCU04ANS — 87 —...
  • Page 63 IC121 CXD2535CR 74 73 72 71 69 68 67 66 65 63 62 61 60 58 57 56 55 54 53 52 51 50 DVSS DIN PLL DIPO 34 MHz (22 MHz) SE 76 ANALOG MUX COMP TEST2 TE 77 MVC1 OP AMP TENV 78...
  • Page 64 IC171 X24C08SC7000 TEST INPUT START CYCLE H.V. GENERATION TIMING START & CONTROL STOP LOGIC CONTROL LOGIC E PROM XDEC 32 x 32 LOAD WORD ADDRESS COUNTER YDEC DATA REGISTER IC191, 507 L88MS05T-FA-TL OVERVOLTAGE PROTECTOR REFERENCE START VOLTAGE VOLTAGE ERROR ON / OFF CURRENT CONTROL LIMITTER...
  • Page 65 IC201 CXA8027N-ELL2000 OVER ROTOR HEAT POSITION PROTECT DETECT SOFT OUTPUT START TIMING DRIVER SWITCHING DRIVE CONTROL CONTROL DRIVE BUFFER EXOR IC304, 306 M66500FP PORT F PORT G PORT C (4 BIT) (8 BIT) (HIGHT 4 BIT) PORT C (LOW 4 BIT) PORT E (8 BIT) DATA BUS...
  • Page 66 IC309 BA6287F-T1 IC302 AT29C1024-70 OUT1 Y DECODER OUT2 X DECODER DRIVER DRIVER VREF CONTROL LOGIC POWER SAVE IC310 M62005FP OE ,CE AND WE LOGIC INTERRUPT SIGNAL – GENERATOR RESET SIGNAL – GENERATOR IC311, 314 TC7W08FU IC305 MSM6338MS-K 0 DB DATA 0 DB 16 BIT 0 DB...
  • Page 67 IC313 M66230FP RECEIVER BUFFER BAUD RECEIVER 4byte FIFO GENERATOR SAMPLING RECEIVER CONTROL, ERROR STATUS CLOCK DETECT CIRCUIT (CRC etc.) REGISTER DIVIDER TRANSMITTER CIRCUIT BUFFER TRANSMITTER 4byte FIFO TRANSFER TRANSMITTER CONTROL, ERROR CLOCK DETECT CODE GENERATE CIRCUIT COMMAND (CRC etc.) REGISTER READ/WRITE DATA BUS BUFFER CONTROL CIRCUIT...
  • Page 68 IC401 CXD2536CR SWDT SCLK ATRAC Encoder/Decoder XLAT SRDT SENS SMD0 SMD1 Memory Data Controller I/F Memory XINT RCPB XRAS WRMN ATRAC Encoder/Decoder I/F TST0 XCAS TST1 DI Block TST2 RAM R/W Controller XRST CD-ROM Encoder/Decoder TST3 TST4 Clock Generator TST5 IC404 TC74VHC74FS —...
  • Page 69 IC413, 506 TCW74FU IC405, 703 TC7WU04F IC412 CS8402A-CS XPRO C BITS LINE DRIVER SERIAL AUDIO PORT BIPHASE DATA LOGIC MARK ENCODER U BITS REGISTERS XRES VALIDITY TIMING PREAMBLE PARITY — 94 —...
  • Page 70 IC502 CXA8054M-T6 – – – – IC503 CXD8567AM-T6 INIT D Vdd 2 SYSM L1 (+) A Vdd L SHIFT L2 (+) LATCH A Vss L 256FSO X Vss TEST1 512IN D Vss X OUT MCKSEL X Vdd XBCK A Vss R DATA R2 (+) LRCK...
  • Page 71 IC601 M66004M8FP 64 - 61 59 - 33 (35BIT x 16) DECODER CODE SELECT INDICATION SEGMENT INDICATION CODE/COMMAND INDICATION CODE DIGIT OUTPUT OUTPUT CONTROL CONTROL CONTROLLER RESISTOR CIRCUIT CODE CIRCUIT CIRCUIT RESISTOR (8BIT x 16) WRITE DECODER (35BIT x 16) WRITE SERIAL OUTPUT...
  • Page 72 IC901 CXD8633Q OUTARQ XARQ36 DTO36 OUTDATA SERIAL BUS SELECTOR DTI36 OUTXABS XABS36 OUTACK ACK36 DUPLICATON CONTROLLER XRES INARQ RELES AUDIO DATA INDATA RQEN CONTROLLER INXABS DOUT AXBCK INACK — 97 —...
  • Page 73: Exploded Views

    4-983-735-01 LID (CHASSIS) 4-983-730-01 BUTTON (FF.REW) 1-777-238-11 WIRE (FLAT TYPE)(16 CORE) 4-983-729-01 BUTTON (SHORT) * 15 A-4699-172-A DISP BOARD, COMPLETE 4-942-568-01 EMBLEM (NO.5), SONY 4-989-820-01 CAP (MINI-DIN) 3-668-009-02 PIN, PUSH BUTTON * 17 4-956-134-01 HOLDER (FL TUBE) 3-567-099-01 SPRING, COMPRESSION...
  • Page 74: Chassis Section

    6-2. CHASSIS SECTION not supplied #1 #1 not supplied MDM-2B6P not supplied not supplied not supplied Supplied with RV805 The components identified by mark ! or dotted line with mark ! are critical for safety. Replace only with part number specified.
  • Page 75: Back Panel Section

    6-3. BACK PANEL SECTION not supplied Supplied with J701 The components identified by mark ! or dotted line with mark ! are critical for safety. Replace only with part number specified. Les composants identifiés par une marque ! sont critiques pour la sécurité. Ne les remplacer que par une piéce portant le numéro spécifié.
  • Page 76: Md Mechanism Section (Mdm-2B6P)

    6-4. MD MECHANISM SECTION (MDM-2B6P) not supplied not supplied M191 154 153 MBU-2B6P not supplied 190 188 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 4-967-673-01 SPRING, COMPRESSION 4-983-110-01 CUSHION (LVO) 4-967-671-01 INSULATOR (MD) 4-977-777-01 BASE (BD) 4-970-710-01 SPRING, COMPRESSION 4-967-670-01 SPRING (UDR), TORSION 4-979-400-01 LEVER (DOOR)
  • Page 77: Md Base Unit Section (Mbu-2B6P)

    6-5. MD BASE UNIT SECTION (MBU-2B6P) S102 not supplied M102 M101 components identified not supplied mark ! or dotted line with mark ! are critical for safety. Replace only with part number specified. Les composants identifiés par une marque ! sont critiques pour la sécurité. Ne les remplacer que par une piéce portant le numéro spécifié.
  • Page 78: Electrical Parts List

    SECTION 7 ADIO A OUT 232C ELECTRICAL PARTS LIST Note: • SEMICONDUCTORS • Due to standardization, replacements in the parts list The components identified by mark ! In each case, u: µ , for example: may be different from the parts specified in the or dotted line with mark ! are critical diagrams or the components used on the set.
  • Page 79 ADIO Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark < RESISTOR > C112 1-164-232-11 CERAMIC CHIP 0.01uF C113 1-107-682-11 CERAMIC CHIP R843 1-216-651-11 METAL CHIP 0.5% 1/10W C114 1-163-038-91 CERAMIC CHIP 0.1uF R844 1-216-651-11 METAL CHIP 0.5% 1/10W C115...
  • Page 80 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark C193 1-164-346-11 CERAMIC CHIP Q164 8-729-924-19 TRANSISTOR DTA123JU C194 1-126-206-11 ELECT CHIP 100uF 6.3V Q181 8-729-018-75 TRANSISTOR 2SJ278MY < CONNECTOR > Q182 8-729-017-65 TRANSISTOR 2SK1764KY CN101 1-766-508-11 CONNECTOR, FFC/FPC (ZIF) 22P <...
  • Page 81 D OUT DETECTION SW Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R164 1-216-045-00 METAL CHIP 1/10W A-4699-185-A DIG BOARD, COMPLETE R165 1-216-097-91 METAL GLAZE 100K 1/10W ******************** R166 1-220-250-11 METAL GLAZE 1/2W R167 1-216-065-00 METAL CHIP 4.7K 1/10W <...
  • Page 82 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark C521 1-104-540-11 FILM CHIP 0.0012uF C409 1-163-038-91 CERAMIC CHIP 0.1uF C522 1-104-540-11 FILM CHIP 0.0012uF C410 1-163-038-91 CERAMIC CHIP 0.1uF C523 1-104-531-11 FILM CHIP 220PF C524 1-104-531-11 FILM CHIP 220PF C411 1-163-038-91 CERAMIC CHIP...
  • Page 83 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark < IC > L417 1-414-235-11 INDUCTOR, FERRITE BEAD L418 1-414-235-11 INDUCTOR, FERRITE BEAD IC301 8-759-426-94 IC M30600E8FP L419 1-414-235-11 INDUCTOR, FERRITE BEAD IC302 8-759-425-28 IC AT29C1024-70TC L501 1-410-375-11 INDUCTOR CHIP 3.3uH IC303 8-759-421-57 IC LC3564SM-70-TEL...
  • Page 84 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R340 1-216-065-00 METAL CHIP 4.7K 1/10W R392 1-216-073-00 METAL CHIP 1/10W R341 1-216-065-00 METAL CHIP 4.7K 1/10W R393 1-216-089-91 METAL GLAZE 1/10W R342 1-216-065-00 METAL CHIP 4.7K 1/10W R394 1-216-089-91 METAL GLAZE 1/10W...
  • Page 85 DISP Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R510 1-216-077-00 METAL CHIP 1/10W < FLUORESCENT INDICATOR > R511 1-216-077-00 METAL CHIP 1/10W FL601 1-517-542-11 INDICATOR TUBE, FLUORESCENT R512 1-216-081-00 METAL CHIP 1/10W R513 1-216-081-00 METAL CHIP 1/10W <...
  • Page 86 JACK Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 1-662-428-11 HP BOARD C822 1-126-941-11 ELECT 470uF ******** C831 1-164-004-11 CERAMIC CHIP 0.1uF C832 1-164-004-11 CERAMIC CHIP 0.1uF < CAPACITOR > C837 1-164-004-11 CERAMIC CHIP 0.1uF C841 1-164-159-11 CERAMIC 0.1uF C838...
  • Page 87 JACK MOTOR Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R815 1-216-065-00 METAL CHIP 4.7K 1/10W 1-653-412-11 MOTOR BOARD R816 1-216-065-00 METAL CHIP 4.7K 1/10W *********** R818 1-216-081-00 METAL CHIP 1/10W R819 1-216-001-00 METAL CHIP 1/10W <...
  • Page 88 POWER Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark < DIODE > R732 1-216-026-00 METAL GLAZE 1/10W D701 8-719-800-76 DIODE 1SS226 ************************************************************** D702 8-719-800-76 DIODE 1SS226 A-4699-171-A POWER BOARD, COMPLETE < FERRITE BEAD > ********************** FB708 1-236-163-11 ENCAPSULATED COMPONENT 1-533-293-11 FUSE HOLDER FB709...
  • Page 89 POWER Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 8-719-200-02 DIODE 10E2 1-215-437-00 METAL 4.7K 1/4W 8-719-200-02 DIODE 10E2 1-215-445-00 METAL 1/4W 8-719-312-47 DIODE RBA-406B 1-215-445-00 METAL 1/4W 8-719-987-63 DIODE 1N4148M 1-215-431-00 METAL 2.7K 1/4W 1-215-433-00 METAL 3.3K 1/4W 8-719-200-82 DIODE 11ES2...
  • Page 90 Ref. No. Part No. Description Remark ************** HARDWARE LIST ************** 7-685-872-09 SCREW +BVTT 3X8 (S) 7-685-534-19 SCREW +BTP 2.6X8 TYPE2 N-S 7-682-561-09 SCREW +B 4X8 7-685-871-01 SCREW +BVTT 3X6 (S) 7-682-660-09 SCREW +PS 4X6 7-682-560-04 SCREW +P 4X6 7-682-546-09 SCREW +B 3X5 7-685-647-79 SCREW +BVTP 3X10 TYPE2 N-S 7-685-660-29 SCREW +BVTP 4X10 TYPE2 SLIT 7-682-948-01 SCREW +PSW 3X8...
  • Page 91 MDS-B6P Sony Corporation 97C090410-1 Printed in Japan © 1997. 3 9-960-873-11 Home A&V Products Company Published by Service and Safety Engineering Dept. (Shibaura) — 116 —...

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