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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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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.
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.
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.
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.
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).
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.
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.
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.
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.
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.
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 —...
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.
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• 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...
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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)
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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 (+)
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• 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...
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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...
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• 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...
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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...
5-14. IC BLOCK DIAGRAMS IC11 M5293L REFERENCE VOLTAGE REFERENCE ON/OFF – VOLTAGE OVERHEAT OVERCURRENT PROTECTION LIMITTER IC15 BA3960 REF. VOLTAGE – – IC16 SN74HCU04ANS — 87 —...
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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...
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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...
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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...
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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...
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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...
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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 —...
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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...
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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...
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.
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.
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.
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.
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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 <...
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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...
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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...