Sony MDS-EX77 User Manual Download

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MICROFILM

MDS-EX77

MINI DISC DECK

SERVICE MANUAL

AEP Model

UK Model

E Model

Model Name Using Similar Mechanism

MDS-S37

MD Mechanism Type

MDM-3A

Optical Pick-up Name

KMS-260A/J1N

U.S and foreign patents licensed from Dolby Labora-
tories Licensing Corporation.

SPECIFICATIONS

MDS-EX77 is the mini disc deck
section in DHC-MD77/EX77MD.

Summary of Contents for MDS-EX77

Page 1: ...del E Model Model Name Using Similar Mechanism MDS S37 MD Mechanism Type MDM 3A Optical Pick up Name KMS 260A J1N U S and foreign patents licensed from Dolby Labora tories Licensing Corporation SPECIFICATIONS MDS EX77 is the mini disc deck section in DHC MD77 EX77MD ...

Page 2: ...ay result in hazardous radiation exposure TABLE OF CONTENTS 1 SERVICING NOTES 1 1 Power Supply During Servicing 4 1 2 Flourescent Indicator Tube Buttons Jog and LEDs Check Mode 4 1 3 Selection of Input Signal 4 1 4 Retry Cause Display Mode at Record 5 2 GENERAL 7 3 DISASSEMBLY 19 4 TEST MODE 4 1 Precautions for Use of Test Mode 24 4 2 Setting the Test Mode 24 4 3 Releasing the Test Mode 24 4 4 Bas...

Page 3: ...ren ADVARSEL Eksplosjonsfare ved feilaktig skifte av batteri Benytt samme batteritype eller en tilsvarende type anbefalt av apparatfabrikanten Brukte batterier kasseres i henhold til fabrikantens instruksjoner VARNING Explosionsfara vid felaktigt batteribyte Använd samma batterityp eller en likvärdig typ som rekommenderas av apparattillverkaren Kassera använt batteri enligt gällande föreskrifter V...

Page 4: ...C button is finished ANALOG IN LED is turned off when p button is pressed 4 Press the CD SYNC button with fluorescent indicator tube in all off status Key TEST OK is displayed for a moment then JOG LEDCheck is displayed At this time if REPEAT button is pressed STANDBY is displayed and blinking implying that normal operation is ready 5 With JOG LEDCheck displayed turning the SELECTOR konb and all L...

Page 5: ...lendar blink 4 Press the ENTER YES button and Complete is displayed 5 When Complete appears immediately keep pressing the p button for about 10 seconds 6 When TOC on display disappears release the p button 7 Press the r REC button to start recording 8 Press the DISPLAY CHARACTER button and the display will changes as follows SC Rt Data quantity in D RAM is displayed at all times Retry cause is dis...

Page 6: ... Decimal Hexadecimal Decimal 0 0000 8 1000 1 0001 9 1001 2 0010 A 1010 3 0011 B 1011 4 0100 C 1100 5 0101 D 1101 6 0110 E 1110 7 0111 F 1111 8 4 2 1 8 4 2 1 Description Bit b7 b6 b5 b4 b3 b2 b1 b0 0 0 0 0 0 0 0 0 00 spindle slow When spindle speed slow was detected 0 0 0 0 0 0 0 1 01 shock 1 When shock over 3 5 was detected 0 0 0 0 0 0 1 0 02 ader 5 When ADER was counted more than 5 times successi...

Page 7: ... 7 SECTION 2 GENERAL This section is extracted from instruction manual ...

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Page 19: ...ge 21 BRACKET T L R Page 20 MECHANISM DECK Page 20 CASE FRONT PANEL SECTION Page 19 SUB CHASSIS Page 21 Note Follow the disassembly procedure in the numerical order given 9 lead with connector 8 claw 4 two legs F 3 two screws BV3 10 7 flat wire 19 Core CN700 6 flat wire 5 Core CN800 1 two screws case 3 TP2 2 case 1 two screws case 3 TP2 º front panel section CASE FRONT PANEL SECTION 5 three screws...

Page 20: ...four screws BVTT3 6 4 mechanism deck 1 flat wire 29 core CN402 2 flat wire 19 core CN401 4 bracket joint 5 two screws BVTT2 3 6 bracket L 8 bracket R 7 two screws BVTT2 3 3 screw BVTT2 3 3 screw BVTT2 3 1 four screws BVTT2 3 2 bracket T ...

Page 21: ...p screws 2 two insulators part A NG OK Take care so that the part A may be right position when installing part A BD BOARD 3 sub chassis part A 1 flexible board over write head 3 screws BVTT2 4 5 BD board 4 OP relay flexible board CN101 2 flat cable 15 core CN106 ...

Page 22: ...UTTER ASS Y 1 stopper washer 2 shaft shutter A 3 shutter ass y shutter ass y shaft shutter B hole B hole A When installing install the shaft shutter A into the hole as show in the figune before installing the shaft shutter B into the hole B shaft shutter A ...

Page 23: ...plete ass y part A OK NG Take care not to damage the detective switch slider ass y SLIDER COMPLETE ASS Y claw claw 45 3 Set the shaft of gear LB to be at the position in the figure 2 retainer gear 4 Remove the slider complete ass y in the direction of arrow with putting out of two claws 1 special screw M1 7 1 4 ...

Page 24: ...mplifier system or power feed jig PFJ 1 into the power outlet then release the button 4 3 RELEASING THE TEST MODE Press the REPEAT button and the power is turned OFF standby status and the set becomes ready for normal operation 4 4 BASIC OPERATIONS OF THE TEST MODE All operations are performed using the SELECTOR knob EDIT NO button and ENTER YES button The functions of these buttons and knob are a...

Page 25: ...tinuous Recording Mode 1 Set the MO disc in the unit Refer to note 3 2 Turning the SELECTOR knob and display CREC MODE 3 Press the ENTER YES button to change the display to CREC MID 4 When access completes the display changes to CREC and REC lights up Note The numbers displayed shows you the recording posi tion address 4 7 2 Changing the Parts to be Recorded 1 When the ENTER YES button is pressed ...

Page 26: ...ressed the dis play changes in the following order Table 4 3 4 9 FUNCTIONS OF OTHER BUTTONS 1 MODE display Displays TEMP ADJUST CPLAY MODE etc 2 Error rate display Error rates are displayed as follows C1 AD C1 Indicates C1 error AD Indicates ADER 3 Address display Address are displayed as follows h a MO groove With this display if SCROLL button is pressed the follow ing will be displayed h s MO pi...

Page 27: ...forming adjustments After completing the adjustments exit the test mode 3 Perform the adjustments in the order shown 4 Use the following tools and measuring devices Check Disc MD TDYS 1 Parts No 4 963 646 01 Laser power meter LPM 8001 Parts No J 2501 046 A Oscilloscope Measure after preforming CAL of prove Digital voltmeter Thermometer 5 When observing several signals on the oscilloscope etc make ...

Page 28: ...n or button and move the optical pick up Connect the digital voltmeter to CN110 pin 5 I 3 V and CN110 pin 4 IOP of the BD board 2 Turning the SELECTOR knob and display LDPWR AD JUST Laser power for adjustment 3 Press the ENTER YES button and display LD 0 9 mW 4 Turning the SELECTOR knob so that the reading of the la ser power meter becomes 0 82 to 0 91 mW Set the range control on the laser power m...

Page 29: ...e the optical pick up outside the pit 4 Turning the SELECTOR knob and display EFBAL AD JUST 5 Press the ENTER YES button and display EFB MO R Laser power READ power focus servo ON tracking servo OFF spindle S servo ON 6 Turning the SELECTOR knob so that the waveforms of the oscilloscope becomes the specified value When the SELECTOR knob is turned the of EFB MO R changes and the waveform changes In...

Page 30: ... 1 2 Turning the SELECTOR knob and display CPLAY MODE 3 Press the ENTER YES button and display CPLAY MID 4 C1 AD is displayed 5 Check that the C1 error is below 20 6 Press the EDIT NO button stop playback press the EJECT button and remove the test disc 5 9 2 MO Error Rate Check Checking Method 1 Load a continuously recorded disc Refer to 5 4 Creating MO Continuously Recorded Disc 2 Turning the SEL...

Page 31: ...C TEO IOP I 3V CN110 1 5 CN101 D101 IC192 5 11 ADJUSTING POINTS AND CONNECTING POINTS BD BOARD COMPONENT SIDE BD BOARD CONDUCTOR SIDE Circuit Boards Location SECTION 6 DIAGRAMS SW board BD board MAIN board REC VOL board PANEL board ...

Page 32: ... 1 SPFD 93 2 SPRD SPINDLE SERVO AUTO SEQUENCER 92 3 SFDR 91 4 SRDR 88 5 FFDR 89 6 FRDR 86 7 TFDR 85 8 TRDR PWM GENERATOR A D CONVERTER SAMPLING RATE CONVERTER CPU INTERFACE MONITOR CONTROL MNT3 MNT2 MNT1 4 3 2 1 MNT0 SCLK SWDT SRDT 6 5 8 9 SENS XLAT 7 DQSY 12 11 SQSY 14 XINT 24 DADT 22 DOUT 21 DIN LRCK 25 26 XBCK OSCO 17 OSCI SUBCODE PROCESSOR EFM ACIRC ENCODER DECODER ADIP DEMODULATOR DECODER SHO...

Page 33: ...Hz XIN T XOUT T 71 72 73 FLDATA FLCLK FLCS 62 63 61 DAT CLK CS 58 59 OSCO OSCI OSC 2 1 P1 P2 LED DRIVE Q701 702 D731 732 D731 SELECTOR D732 ENTER YES IC701 FLUORESCENT INDICATOR TUBE DRIVER SYSTEM CONTROLLER IC401 2 2 5 39 4 S1 S36 FLUORESCENT INDICATOR TUBE FL701 40 54 D1 D15 ACF1 ACF2 13 PDOWN 9 TIMER 51 50 JOG0 JOG1 ROTARY ENCODER S741 SELECTOR 3 5 20 SYS RST 60 RST S701 S706 S711 S714 S722 S72...

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Page 48: ... 51 52 6 6 PRINTED WIRING BOARDS MAIN DISPLAY Section See page 32 for Circuit Boards Location ...

Page 49: ...11 2896 MHz Approx 500 mVp p 3 Vp p 11 2896 MHz 3 4 Vp p 5 7 µsec IC123 1 7 IC121 º FS4 2 IC101 4 A Play Mode 3 1 Vp p 22 5792 MHz 8 IC121 OSCI Approx 200 mVp p 3 4 Vp p 44 1 kHz 1 2 0 2 Vp p 9 IC121 LRCK 4 IC101 RF Play Mode 3 5 Vp p 2 8224 MHz 0 IC121 XBCK 5 IC152 CAPA Play Mode 4 6 Vp p 1 5 µsec 3 IC101 8 9 E F Play Mode Approx 150 mVp p 4 6 Vp p 1 5 µsec 53 54 1 6 Vp p Approx 1 92 MHz 3 4 Vp p...

Page 50: ... ADFM 28 SE 27 CSLED 26 TE 25 WBLADJ 24 VCC 23 3TADJ 22 EQADJ 21 VREF 20 F0CNT 19 XSTBY 18 XLAT 17 SCLK 16 SWDT 15 TEMPR 14 TEMPI 13 GND 12 APCREF 11 APC 10 PD 9 F 8 E 7 D 6 C 5 B 4 A 3 VC VI CONV BGR VREF SCRI PARA DECODE AUXSW COMMAND IVR GSW IV FF FBAL FF TG SEA 1 2 TG TEA WBL 3T EQ DET ADIP AGC WBL BPF22 BPFC ABCDA FEA WBL ATA CVB RFA1 1 2 1 2 GRVA CFST RFA2 GRV HLPT PTGR 2 1 1 2 BOTTOM PEAK R...

Page 51: ... 17 OSCO 16 OSCI 15 TX 14 XINT 13 RECP 12 DQSY 11 SQSY 10 XRST 9 SENS 8 SRDT 7 XLAT 6 SCLK 5 SWDT 4 MNT3 3 MNT2 2 MNT1 1 MNT0 PWM GENERATOR AUTO SEQUENCER SERVO DSP CPU I F MONITOR CONTROL SPINDLE SERVO EACH BLOCK EACH BLOCK DIGITAL AUDIO I F SAMPLING RATE CONVERTER CLOCK GENERATOR SUBCODE PROCESSOR EACH BLOCK A D CONVERTER ANALOG MUX EFM ACIRC ENCODER DECODER APC PLL SHOCK RESISTANT MEMORY CONTRO...

Page 52: ...13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 INRP INRM REFI AVDD AVSS APD NU NU TEST1 LRCK1 BCK1 ADDT V35A VSS1 LF MCKI DPD VSS2 LF INIT MODE SHIFT LATCH 256CK V35D VSS2 512CK BCK2 DADT LRCK2 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 INLP INLM REFO LVSS LVDD AVSS LF NU NU VSS1 LF TEST3 TEST2 VSS1 VDD1 VDD1 VDD2 L1 AVDDL L2 AVSSL XVSS XIN XOUT XVDD AVSSR...

Page 53: ...ILTER CLAMP FWD IN REV IN VCC 1 VCC 2 NOISE FILTER MOTOR DRIVE MOTOR DRIVE MOTOR DRIVE T S D O C P FWD REV STOP CONTROL LOGIC 1 12 DELAY CIRCUIT VREF DELAY CIRCUIT 3 3V PH5 STBY VCC ANA5 SYS3 3 BACK AC CD1 P DOWN GND CD2 S RESET 2 3 4 5 6 7 8 9 10 11 IC501 LA5620 ...

Page 54: ...25 WBLADJ I Center frequency setting terminal for the internal circuit BPF22 26 TE O Tracking error signal output to the CXD2650R IC121 27 CSLED I Connected to the external capacitor for low pass filter of the sled error signal 28 SE O Sled error signal output to the CXD2650R IC121 29 ADFM O FM signal output of the ADIP 30 ADIN I Receives a ADIP FM signal in AC coupling 31 ADAGC I Connected to the...

Page 55: ...output enable signal input from the system controller IC401 Writing data transmission timing input Also serves as the magnetic head on off output 16 OSCI I System clock signal 512Fs 22 5792 MHz input from the A D D A converter IC201 17 OSCO O System clock signal 512Fs 22 5792 MHz output terminal Not used open 18 XTSL I Input terminal for the system clock frequency setting L 45 1584 MHz H 22 5792 M...

Page 56: ... BOTM I A Light amount signal RF ABCD bottom hold input from the CXA2523R IC101 64 ABCD I A Light amount signal ABCD input from the CXA2523R IC101 65 FE I A Focus error signal input from the CXA2523R IC101 66 AUX1 I A Auxiliary signal I3 signal temperature signal input from the CXA2523R IC101 67 VC I A Middle point voltage 1 65V input from the CXA2523R IC101 68 ADIO O A Monitor output of the A D c...

Page 57: ... kHz output terminal X tal system Not used open 91 SRDR O Sled servo drive PWM signal output to the BH6511FS IC152 92 SFDR O Sled servo drive PWM signal output to the BH6511FS IC152 93 SPRD O Spindle servo drive PWM signal output to the BH6511FS IC152 94 SPFD O Spindle servo drive PWM signal output to the BH6511FS IC152 95 TEST0 I 96 TEST1 I 97 TEST2 I 98 TEST3 I 99 DVSS Ground terminal digital sy...

Page 58: ...verter section L reset initialize 19 MODE I Writing data input from the system controller IC401 20 SHIFT I Serial clock signal input from the system controller IC401 21 XLATCH I Serial latch signal input from the system controller IC401 22 256CK O 256Fs 11 2896 MHz clock signal output terminal 23 V35D Power supply terminal 3 3V for digital system 24 VSS2 Ground terminal for D A converter section d...

Page 59: ...erminal for the test fixed at L 47 TEST3 I Input terminal for the test fixed at L 48 VSS1 Ground terminal for A D converter section digital system 49 NU Not used open 50 NU Not used open 51 AVSS Ground terminal for A D converter section analog system 52 LVDD Power supply terminal 5V for A D converter section buffer system 53 LVSS Ground terminal for A D converter section buffer system 54 REFO O Re...

Page 60: ... 3 msec Almost all H is input 16 DQSY I Digital In U bit CD format subcode Q sync SCOR input from the CXD2650R IC121 L is input every 13 3 msec Almost all H is input 17 NC 18 NC Not used open 19 NC 20 SYS RST I System reset signal input from the regulated power supply IC IC501 L reset For several hundreds msec after the power supply rises L is input then it changes to H 21 TEST I Input terminal fo...

Page 61: ...ignal output terminal of the ANALOG IN indication LED D733 L LED on 62 NC Not used open 63 CLKSET0 I Clock destination selected terminal fixed at H in this set 64 CLKSET1 I Clock destination selected terminal fixed at L in this set 65 GND Ground terminal 66 3 3V Power supply terminal 3 3V 67 SCLK O Serial clock signal output to the CXD2650R IC121 and A D D A converter IC201 68 SWDT O Writing data ...

Page 62: ... converter IC201 91 NC Not used open 92 NC Not used open 93 MUTE O Line mute control signal output to the CXA8065S IC101 94 LDOUT O Motor control signal output to the loading motor driver IC311 1 95 LDIN O Motor control signal output to the loading motor driver IC311 1 96 LIMIT IN I Detection input from the sled limit in detect switch S681 The optical pick up is inner position when L 97 PROTECT I ...

Page 63: ...AT TYPE 5 CORE 21 4 951 620 01 SCREW 2 6X8 BVTP 22 1 663 192 11 REC VOL BOARD 23 4 985 896 01 KNOB REC 24 4 985 925 01 KNOB JOG 25 4 988 161 01 SPRING RING 3 1 2 7 6 5 8 25 not supplied not supplied 23 20 22 21 21 21 1 1 6 6 1 16 15 14 13 not supplied 14 18 not supplied 19 11 12 10 9 4 17 24 MDM 3A NOTE XX and X mean standardized parts so they may have some difference from the original one Color I...

Page 64: ...supplied 51 52 2 not supplied 2 2 2 not supplied not supplied 5 51 4 628 167 01 SCREW STEP 52 4 987 327 01 INSULATOR 53 4 986 959 01 WASHER STOPPER 54 4 987 736 01 SHAFT SHUTTER 55 X 4947 825 1 SHUTTER ASSY 56 1 660 966 11 OP RELAY FLEXIBLE BOARD 57 A 4699 092 A BD BOARD COMPLETE 58 1 777 517 11 WIRE FLAT TYPE 15 CORE 59 4 987 910 01 SPRING O C TENSION ...

Page 65: ...EVER HEAD UP 111 4 979 906 11 SPRING LEAD SCREW 112 4 984 556 01 SHAFT MAIN SHAFT Ref No Part No Description Remark Ref No Part No Description Remark 113 1 661 774 11 SW BOARD 114 A 3304 200 A SCREW ASSY LEAD 115 4 963 914 02 RACK INSERTER 116 3 366 890 11 SCREW M1 4 117 8 583 028 02 OPTICAL PICK UP KMS 260A J1N 118 4 987 061 01 SPACER RACK 119 4 988 560 01 SCREW P 1 7X6 120 4 955 841 11 SCREW HR9...

Page 66: ...1 163 251 11 CERAMIC CHIP 100PF 5 50V C131 1 163 023 00 CERAMIC CHIP 0 015uF 5 50V C132 1 107 823 11 CERAMIC CHIP 0 47uF 10 16V C133 1 163 017 00 CERAMIC CHIP 0 0047uF 5 50V C134 1 163 038 00 CERAMIC CHIP 0 1uF 25V C135 1 163 038 00 CERAMIC CHIP 0 1uF 25V C136 1 126 206 11 ELECT CHIP 100uF 20 6 3V C141 1 163 038 00 CERAMIC CHIP 0 1uF 25V C142 1 163 251 11 CERAMIC CHIP 100PF 5 50V C143 1 163 251 11...

Page 67: ...1 216 049 00 METAL CHIP 1K 5 1 10W R137 1 216 025 00 METAL CHIP 100 5 1 10W R140 1 216 029 00 METAL CHIP 150 5 1 10W R141 1 216 295 00 CONDUCTOR CHIP 2012 R142 1 216 073 00 METAL CHIP 10K 5 1 10W R143 1 216 073 00 METAL CHIP 10K 5 1 10W R144 1 216 025 00 METAL CHIP 100 5 1 10W R146 1 216 037 00 METAL CHIP 330 5 1 10W R147 1 216 025 00 METAL CHIP 100 5 1 10W R148 1 216 045 00 METAL CHIP 680 5 1 10W...

Page 68: ...282 31 CERAMIC 100PF 10 50V C309 1 164 159 11 CERAMIC 0 1uF 50V C310 1 164 159 11 CERAMIC 0 1uF 50V C311 1 162 306 11 CERAMIC 0 01uF 20 16V C312 1 162 306 11 CERAMIC 0 01uF 20 16V C314 1 164 159 11 CERAMIC 0 1uF 50V C315 1 164 159 11 CERAMIC 0 1uF 50V C372 1 164 159 11 CERAMIC 0 1uF 50V C391 1 164 159 11 CERAMIC 0 1uF 50V C392 1 164 159 11 CERAMIC 0 1uF 50V C393 1 164 159 11 CERAMIC 0 1uF 50V C396...

Page 69: ...N4111 Q501 8 729 900 80 TRANSISTOR DTC114ES Q502 8 729 422 57 TRANSISTOR UN4111 Q521 8 729 119 76 TRANSISTOR 2SA1175 HFE Q522 8 729 118 01 TRANSISTOR 2SB1116 RESISTOR R107 1 249 439 11 CARBON 68K 5 1 4W R108 1 249 439 11 CARBON 68K 5 1 4W R109 1 249 429 11 CARBON 10K 5 1 4W R110 1 249 421 11 CARBON 2 2K 5 1 4W R111 1 249 417 11 CARBON 1K 5 1 4W R113 1 249 417 11 CARBON 1K 5 1 4W R114 1 249 421 11 ...

Page 70: ...W R523 1 249 429 11 CARBON 10K 5 1 4W R531 1 249 413 11 CARBON 470 5 1 4W R532 1 249 413 11 CARBON 470 5 1 4W R533 1 249 441 11 CARBON 100K 5 1 4W R540 1 247 702 11 CARBON 150 5 1 4W F R541 1 247 702 11 CARBON 150 5 1 4W F R542 1 247 702 11 CARBON 150 5 1 4W F R543 1 247 702 11 CARBON 150 5 1 4W F R544 1 247 702 11 CARBON 150 5 1 4W F R545 1 247 702 11 CARBON 150 5 1 4W F R546 1 247 702 11 CARBON ...

Page 71: ...RBON 47 5 1 4W R735 1 249 401 11 CARBON 47 5 1 4W R758 1 247 842 11 CARBON 3K 5 1 4W R760 1 247 807 31 CARBON 100 5 1 4W R761 1 247 807 31 CARBON 100 5 1 4W R762 1 247 807 31 CARBON 100 5 1 4W R763 1 247 807 31 CARBON 100 5 1 4W SWITCH S701 1 554 303 21 SWITCH TACTILE fl S702 1 554 303 21 SWITCH TACTILE S703 1 554 303 21 SWITCH TACTILE 0 S704 1 554 303 21 SWITCH TACTILE p S705 1 554 303 21 SWITCH ...

Page 72: ...TOR ASSY SPINDLE M902 A 4672 133 A MOTOR ASSY SLED M903 A 4672 134 A MOTOR ASSY LOADING HARDWARE LIST 1 7 685 647 79 SCREW BVTP 3X10 TYPE2 N S 2 7 685 850 04 SCREW BVTT 2X3 S 3 7 627 553 17 PRECISION SCREW P 2X2 TYPE 3 4 7 627 552 27 SCREW PRECISION P 1 7X2 5 7 685 851 04 SCREW BVTT 2X4 S 6 7 685 871 01 SCREW BVTT 3X6 S 7 7 627 852 28 P 1 7X3 Ref No Part No Description Remark The components identi...

Page 73: ... 78 MDS EX77 97D0573 1 Printed in Japan 1997 4 Published by General Engineering Dept Shibaura Sony Corporation Home A V Products Company 9 960 938 11 ...

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