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Casio ZD-3 Service Manual

Md cd system.
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ZD-3
SEP. 2000
INDEX
MD CD SYSTEM

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   Summary of Contents for Casio ZD-3

  • Page 1

    (without price) ZD-3 SEP. 2000 INDEX MD CD SYSTEM...

  • Page 2: Table Of Contents

    CONTENTS Specifications ........................... 1 Disassembly Instruction ........................2 Reassembly of Tuning Pointer ......................5 Block Diagrams ..........................6 Tuner ............................6 AMP ............................7 MD ............................. 8 CD .............................. 9 VR, Display, PS ........................10 CD Pickup Replacement ........................ 11 Tuner Adjustments .........................

  • Page 3: Specifications

    SPECIFICATIONS MD SECTION System: MiniDisc digital audio system Laser: Semiconductor laser Error correction: Advanced Cross Interleave read Solomon code (ACIRC) Channel: 2 channels 20 to 20,000 Hz ! 3dB Frequency response: Wow and flutter: Less than measurement limit Recording system: Magnetic field modulation overwrite method Coding: Adaptive Transform Acoustic Coding (ATRAC)

  • Page 4: Disassembly Instruction

    DISASSEMBLY INSTRUCTIONS 1. Remove the battery cover. 2. Remove eight screws A holding the case B unit. Case B ass’y 3. Open the CD door and remove three screws B holding the case ass’y. CD door Top case ass’y Case ass’y...

  • Page 5

    4. Remove four screws C holding the MD holder A and MD mechanism ass’y. 5. Remove five screws D holding the display unit. 6. Remove the three PCB supports holding AMP PCB. (reffer figure) Display unit MD Holder A MD Mechanism ass’y AMP PCB ass’y Case ass’y support...

  • Page 6

    9. Pull out the two volume key ass’y, function key and band key. 10. Remove screw G holding the door SW PCB. 11. Remove six screws H holding the CD unit ass’y. 12. Remove four screws J holding the ESD spacer and tuner unit ass’y. 13.

  • Page 7: Reassembly Of Tuning Pointer

    REASSEMBLY OF TUNING POINTER 1. Turn the varicon unclockwise stop position. 2. Set the tuner gear figuer position and fixed the screw. 3. Fixed the tuner chassis on the tuner PCB. (three screws) 4. Set the pointer to the tuner chassis mark position. 5.

  • Page 8: Block Diagrams

    BLOCK DIAGRAMS TUNER To Amplifier Block GND V R ch L ch BAND SW FM-MONO AM Loop Antenna Stereo Antenna AM RF FM RF RF V LPF2 LPF1 Decode Divice BUFF ST/MO Mute FM/AM Level AM Low MIX Out FM IF AM IF QUAD RF In...

  • Page 10

    CN402 CN601 CN301 BD UNIT DRAM AD/DA IC302 IC501 IC502 D+5V Power Supply System IC601 Control IC301 IC401 D+3V A+3V Head Coil EEPROM Motor Motor Driver RF-AMP Driver Driver IC402 IC102, Q105, IC101 IC202 IC402 Q106 CN401 CN201 CN401 CN102 OW Head MD MECHA UNIT...

  • Page 11

    CN702 CN701 Q701 Laser Power Control IC703 BA6898S IC701 Pick Up Mother Driver CXA2542AQ System Servo Processor TA-O SL-O IC710 BA4510F Q702, Tracking Assist Q703 Circuit IC702 1 53 CXD3009Q DOUT Digital Signal Processor SW701 Door SW DOOR SW TEMP AFMUTE PDOWN LMUTE...

  • Page 12: Vr, Display, Ps

    (VCC9V) (GND) (Power Key) (VCC9V) Control Switch (DC9V) (Key IN3) Circuit From (GND) (PS CONT) SW350~SW352 WC307 (TU9V) (DC9V) Unit (MD9V) (GND) (CD9V) (F TU) (3.3V) Lipple Filter Function Circuit Switch (F MD) Q350, Q351, S353 (F CD) Rotary Volume Q352 With WC304...

  • Page 13: Cd Pickup Replacement

    CD PICKUP REPLACEMENT PRECAUTIONS To prevent damage caused by static electricity, the following procedures for grounding is required when opening or repairing the unit. 1. Grounding for the human body Ω) whose other end is grounded. Be sure to put on a wrist-strap for grounding (with impedance lower than 10 The strap works to drain away the static electricity build-up on the human body.

  • Page 14: Tuner Adjustments

    TUNER ADJUSTMENTS Remarks: * When aligning the range and adjusting tracking, proceed with alignment in a sequence of AM t FM. * Use a screwdriver with a plastic grip for all alignments. Equipment Required * AM signal generator (AM SG) * Loop antenna * Output meter * Oscilloscope...

  • Page 15

    AM IF Alignment (Figures 1 and 3) Frequency Tuning Alignment Step Adjustment Remarks of signal dial generator setting IF calibratoion 1000 KHz 1000 end Obtain sine-wave and maximum amplitude. Max. AM Alignment (Figures 1 and 3) Frequency Tuning of signal dial Remarks Step...

  • Page 16

    FM Alignment (Figures 2 and 3) Frequency Tuning of FM signal dial Remarks Step Alignment Adjustment generator setting Obtain sine-wave and 88 MHz Low End Tuning range maximum amplitude. calibration High End 108 MHz FM-OSC Adjustment of 90 MHz 90 MHz Max.

  • Page 17

    TUNER ADJUSTMENT POINTS (TUNER PCB) Top View FM ANT AM ANT RF GND FM RF R9 R10 FM OSC AM OSC AM ANT TUNER PCB 4754-520-2-91 Figure 3...

  • Page 18: Troubleshootings

    TROUBLESHOOTINGS Power switch on and set function switch for CD position. Is ” NO DISC” displayed after “READ” displayed ? Load a disc close CD door. Are total track numbers and playing time displayed ? Press CD “ / “ button. Is the audio signal present at output terminals ?

  • Page 19

    Repair Item 1: ” NO DISC” is not displayed after “ READ” displayed. * IC708 or IC709 is defective. Is system +3.3 V lines * Check circuit around IC708 and IC709. normal ? * IC707 is defective. Is pin 40 (RESET) * Check circuit around IC707.

  • Page 20

    Repair Item 2-A Note: Open the CD door and check the radiation power with an optical power meter or by watching the radiaation through the lens of the pickup unit at a minimum distance of 30cm from the pickup. Does the LASER emit ? Dose the lens move up and down ? Load a disc and close CD door.

  • Page 21

    Repair Item 2-A1: The laser does not emit. Is emitta of Q701 * Check soldering Q701. 3.3V ? * Check circuit around pin 34 of Is pin 34 of IC701 IC701. more than 2.0V at * Check digital signal pins 18, 19 playing ? and 20 of IC701.

  • Page 22

    Repair Item 2-B Watch the waveforn at pin 31 (RFO) of IC801 an oscilloscope. Waveform Waveform Is waveform at * Check circuit around C and pin 35 of pin 35 (RF) of IC702 like that IC702 (RF). shown in figure 10 ? * IC702 is defective.

  • Page 23

    Repair Item: 2-C * Check FFC connector (CN701). Is waveform * IC701 is defective. at pin 41 (TEO) of IC701 like that * Check circuit around TEO line. shown in figure 11 ? * Check circuit around and soldering pins 22, 23, 24 and 42 of IC701.

  • Page 24

    Repair Item 3: No audio signal (analog) present at output terminals. * Check circuit around and Is pin 62 (SYSM) of IC702 soldering IC702. low ? * IC702 is defective. Does audio signal appear at pins 67 and 74 of IC702 ? * Check amplifier unit.

  • Page 25

    Repair Item 4: FR and FF be operated cannot normally. Selected track number cannot be searched. Press FR or FF button. * Check circuit around and soldering Is the waveform at pin 15 of IC701 like that pins 12, 13, 14 and 15 of IC701. shown in figure 14 ? * Check drive unit.

  • Page 26

    Repair Item 5: No audio signal (digital) present at output terminals. Does digital signal * Check circuit around and soldering IC702. appear at pin 53 (DOUT) of IC702 * IC702 is defective. like that shown figuer 16 ? * Check control/MD unit. 1 2 3 4 5 1 2 3 4 1 1 1 2...

  • Page 27

    1. MD mechanism does not operate. (Does not disc loading) MD mechanism does not operate. * PS unit (set) or connector is defective. Is system 5 V lines normal ? * Check circuit around IC601. Is system 3.3 V lines normal ? * IC601 is defective.

  • Page 28

    2. TOC can not be read. TOC can not be read. * Check output level control of pickup or laser. Does the LASER emit ? * Pickup or laser is defective. * Sled motor, drive circuit or limit switch is Does pickup move in the direction of sled motor ? defective.

  • Page 29

    3. Does not play. (No audio output) Does not play. * Check circuit around IC101or pickup. Is RF waveform normal ? * IC101 or pickup is defective. Is communication of * Check circuit around IC201or IC202. DSP and DRAM normal ? * IC201 or IC202 is defective.

  • Page 30

    4. Does not communicate. (Mecha mi-con does not start.) Does not communicate. * PS unit (set) or connector is defective. Is system 5 V lines normal ? * Check circuit around IC601. Is system 3.3 V lines normal ? * IC601 is defective. * Check RESET circuit (set) or connector.

  • Page 31

    5. Can not record. Can not record. * Check pickup or LAZER output control circuit. Is rated output of LASER * Pickup or LAZER output control circuit is normal? defective. * Check magnetism head or drive circuit. Is magnetism head normal? * Magnetism head or drive circuit is defective.

  • Page 32: Pcb Views

    PCB VIEWS TUNER PCB TOP R9 R10 TUNER PCB 4754-520-2-91 SWITCH PCB TOP 4754-520-2-92 SW PCB...

  • Page 33: Amp/jack Pcb Top View

    AMP PCB TOP CN301 CN302 CN303 C201 C200 C318 C104 C327 C100 C204 C101 C317 D200 D304 C312 D303 R325 C106 FB305 C206 R322 C304 C305 FB306 R321 C336 R117 R303 R305 C211 C314 C313 Q302 R217 R116 R118 C111 C303 IC303 R324...

  • Page 34: Vr Pcb Top View

    VR PCB TOP CN400 C354 C355 C356 L351 L350 Q351 Q352 Q350 R352 R353 R355 S353 VR350 C358 C357 R357 C360 C359 R358 D350 WC304 R351 MC-4754 VR PCB SW350 4754-510-0-91 POWER R350 C350 SW351 C352 SOUND SW352 C351 SLEEP...

  • Page 35: Ps/sw A/sw B Pcb Top View

    PS PCB TOP F402 SW401 FUSE:1.0A/125V J401 MC4754 PS PCB 4754-511-0-91 LF401 C404 D405 C403 D404 F401 C402 FUSE:2.5A/125V C406 D403 C401 WC400 D402 SW B PCB TOP SW A PCB TOP CN211 CN411 S103 S104 SW PCB B SW PCB A 4799-510-0-92 4799-510-0-91 S101...

  • Page 36: Cd/door Pcb Top/bottom Views

    CD PCB TOP D709 D710 R815 C840 R818 C736 R741 CN708 D702 Q708 C724 C725 CN702 1 C773 C842 D703 C713 IC709 C771 C838 IC708 C701 D701 C830 IC703 C710 C828 C839 D708 C719 L706 CN701 R802 C711 C767 D706 C744 D705 L706...

  • Page 37

    CD PCB BOTTOM TP726 S704 C841 TP727 TP709 Q710 Q709 R742 TP723 TP935 S705 R736 TP741 TP934 C732 TP742 TP702 R738 R945 C852 R743 TP730 R744 R730 C733 TP724 TP731 C703 C837 C722 R731 C730 R702 C723 R732 JP906 C704 C843 C772 TP717...

  • Page 38: Display Pcb Top/bottom Views

    DISPLAY PCB TOP MC-4754 DISPLAY PCB CN950 SW971 4754-515-0-91 SW991 SW990 R955 LCD950 R954 F/SKIP R953 STOP PLAY/PAUSE R952 SW992 SW972 SW993 SW970 SW974 MEMORY ENTER SW994 PLAY MODE LD950 SW973 SW980 SW981 SW982 SW983 SW984 B/SKIP MBSR DISPLAY DELETE MD EJECT EDIT DISPLAY PCB BOTTOM...

  • Page 39: Bd Pcb Top/bottom Views

    BD PCB TOP CN402 L102 CN601 CN302 C401 C612 RJ611 C341 L103 C653 CN401 R412 C551 C552 L611 L612 R404 C655 R403 C405 C252 R503 R407 L651 C553 C501 CN402 C333 R501 C654 C560 FB501 C334 R502 C507 C601 C162 L401 C517 Q104...

  • Page 40

    BD PCB BOTTOM Q502 D501 R425 C515 R517 R515 R516 R514 C510 IC502 D502 C207 Q504 Q503 C506 C514 IC202 R511 R513 R512 R510 C562 C342 C336 C512 C513 C554 R211 R212 R519 R521 R520 R518 C555 RJ103 C331 C321 R324 R529 R327 C322...

  • Page 41: Wiring Diagram

    WIRING DIAGRAM SW PCB Telescopic DISPLAY PCB Antenna PS PCB CN950 WC400 Blue Blue TUNER PCB CD PCB T401 CN703 Power Transformer DOOR SW PCB CN709 2 CN701 CN704 CN708 MD Pickup CD MECHANISM MD Record Head CN705 MOTOR PCB CN702 CN707 CD Pickup...

  • Page 42: Ic Lead Identification And Internal Diagrams

    IC LEAD IDENTIFICATION AND INTERNAL DIAGRAMS IC1: TA2111N AM RF FM RF RF V FM OSC AM OSC AFC DET Out MPX In LPF2 LPF1 L-Out R-Out Decode Divide BUFF ST/MO Mute FM/AM Level AM IF FM IF FM RF In RF GND AM Low MIX Out AM IF In...

  • Page 43

    IC101: AN8771NFH-V Mode Control 3TENV 20Pin 21Pin RF AMP OFTAMP NRFDET ASOFSET 18Pin RFBDO OFTR ASBDO FBAL/ FOFSET TBAL/ TOFSET Mirror Circuit TRCRS...

  • Page 44

    IC102: TC74VHCT541AFT IC201: AN8814SB-E1 VO 1+ VO 1- VO 2+ VO 2- VO 3+ VO 3- VO 4+ VO 4- Direction Direction Direction Direction Detect Detect Detect Detect Detect Thermal Protect FIN GND Circuit 3.3V PGND 1 IN 1 PC 1 IN 2 PC 2 IN 3...

  • Page 45

    IC202: BA6289F Driver OUT1 Control Logic Driver OUT2 IC300, IC301: BA15218N Out 1 -In 1 +In 1 +In 2 -In 2 Out 2...

  • Page 46

    IC301: MN66614RC1 96,97 35 33 59 58 60 64 39 37 99 Serial DINPLL Interface RXDA RSWSA R384 CV384 ATRAC CVDA Digital Digital Signal Data Audio SDAR Processor Interface Interface Converter SDAP SWSA NCAS FS384 External DRAM MDISY NRAS Control RAD4~ SCTSY 74~68...

  • Page 47

    IC302: TA8227P B.S. 1 Out 1 Power GND OUt 2 B.S. 2 30 kΩ Bias Circuit 30 kΩ Thermal Vcc1 Shut Down Protection Ch 1 Ch 2 Circuit Vcc2 Pre GND (F In) 45Ω 45Ω In 1 NF 1 In 2 NF 2 Ripple IC302: KM44V1000DT-6...

  • Page 48

    IC303, IC708, IC709: PQ15RW11 1 2 3 4 Vadj...

  • Page 49

    IC401: MN101C15F GA1 TXD, SBO0, P00 Port 5 RXD, SBI0, P01 SBT0, P02 P60, A0 System SBO1, P03 P61, A1 Clock Clock MN101C00 SBI1, P04 Generator Generator P62, A2 SBT1, P05 P63, A3 DK,BUZZER,P06 P64, A4 RMOUT,TM0IO,P10 P65, A5 96K Byte 4K Byte TM1IO, P11 P66, A6...

  • Page 50

    IC402: BR93LC46F-E2 Detect Supply Voltage Instruction Decode Control High Clock Generation Write Disable Voltage Generator 6Bit Instruction Buffers Decorder 6Bit Register 1024Bit EEPROM Array Data 16Bit Register AMPS 16Bit Dummy Bit...

  • Page 51

    IC501: PCM3003E-T2 Analog Decimation Delta-sigma LRCIN Front-end & VINL Modulator Circuit Low Cut Filter BCKIN Serial Interface VREF1 Reference VCOM DOUT VREF2 Decimation Analog Delta-sigma & Front-end VINR Modulator Low Cut Filter Circuit Analog Multi-level Interpolation Filter X8 Low-pass Delta-sigma VOUTL Filter Oversampling...

  • Page 52

    IC502: BA4510F-E2 Out 2 -In2 +In 2 Out 1 -In 1 +In 1 IC601: UPC29M33T-E1 Input 1 2 3 Safe Operating Area Protection Reference Start-up Voltage Circuit Drive Error AMP. Circuit Thermal Output Saturation Shut Down Protection Over Current Protection...

  • Page 53

    IC701: CXA2542AQ RFTC RF M RF O RF I CP CB PD1 IV AMP Summing AMP. PD2 IV AMP Laser Power Control FE AMP F IV AMP E IV AMP FO. Bias Window COMP. TGFL Track Gain Level S MIRR Balance Window Window...

  • Page 54

    IC702: CXD3009Q 27 28 49 54 56 55 40 Clock Error Generator Corrector Serial-In Interface Interface Demodurator Timing Asymmetry Logic Corrector Over Sampling Digital Filter 3rd-Order Noise Shaper Sub Code Digital Processor Digital Digital Servo Auto Interface Sequencer...

  • Page 55

    IC703: BA6898S IN4' IN4 OUT4-A OUT4-B NC OPIN-B OPOUT GND OUT3-B OUT3-A IN3 IN3' Level Shift Level Shift T. S. D. OP-AMP 13.3K 13.3K Regulator Driver Mute 13.3K 13.3K Level Shift Level Shift IN1' IN1 OUT1-A OUT1-B GND OUT2-B OUT2-A IN2' RESET REG-B REGOUT MUTE SUB T.

  • Page 56

    IC704: CXP740056-105Q PF5/AN9 PI5/SCK1 PF6/AN10 PI4/INT1/CS1 PF7/AN11 PI3/TO0/ADJ PK3/SCK0 PI2/NMI PK4/SO0 PI1/RMC PK2/TEX PK5/SI0 PK1/TX PK6/CS0 EXTAL XTAL PK7/TO1 PA0~PA7 Clock AN0~AN11 A/D Converter SPC700 α α α α α II Generator/ System CPU Core UART Receiver Control PB0~PB7 URAT Transmitter UART Baud Rate Generator PC0~PC7...

  • Page 57

    IC707: S-80727AL-AQ-T1...

  • Page 58

    IC950: EOC62A3BF1N System Reset RESET 1,536 words x 12 bits Control Core CPU E0C6200B OSC1 Interrupt Generator OSC2 COM0 47 K03 COM1 Input Port 96 words x 4 bits COM2 TEST COM3 37 P00 SEG0 LCD Driver 26 SEG x 4 COM I/O Port SEG25 Power...

  • Page 59: Schematic Diagrams

    SCHEMATIC DIAGRAMS TUNER To AMP D6 RB721Q D7 RB721Q 100K BAND SW C24 1200P C25 1200P 470/10V C22 0.012 100/16V C23 0.012 C28 0.022 100P R7 3.3K R13 100K 1/50V 0.1/50V 10.7MHz R3 10 0.1/50V 0.047 1000P C14 10/50V 8P (4-12P) 455KHz C12 4.7/50V AM-IFT...

  • Page 60: Amp

    H/P JACK UNIT C220 J301 R231 1000/10V H. P AMP UNIT IC301 BA155218N CN304 to Volume C218 47/16V C222 0.15 C217 R230 C213 1000P 120P C212 C215 2.2K C109 C209 10P 0.1/50V 4.7/50V R226 R232 WC305 2.2(1/4W) CN305 CON4R R119 R219 R104 R117 10K...

  • Page 61

    CD 1/2 L701 Q701 10uH 2SA1037K R744 R742 C701 100/ D701 6.3V C713 1SS133 C736 100/6.3V TP724 C734 TP717 1/50V 0.01 TP710 C731 0.033 TP709 R745 C733 R743 R702 CN701 TP712 2.2K C730 0.01 TP701 D703 1SS133 TP702 C729 C732 D702 TP703 1SS133...

  • Page 62

    CD 2/2 TP929 TP930 TP815 TP816 R863 R862 R861 R832 R838 R837 R836 R835 R834 R833 470K R831 R855 R854 R853 FBA04VA600 CN706 C GND L715 R830 L714 TP767 TP843 10uH R845 TP768 TP837 SOUND R829 TP769 LCD/DB3 AMUTE R846 TP770 LCD/DB2 LMUTE...

  • Page 63

    MD 1/2 LDON IC102 74VHCT541A R161 C165 4 7 K R119 22/6.3V V E E R120 1 0 K 2 2 K FB161 R162 D103 R J 1 0 3 CN102 MA2QD01 Q103 HM601 2 S J 2 7 8 R128 C139 C340 0.1...

  • Page 64

    MD 2/2 A-3V AGND PROTECT REFRECT L401 G(0:4) 0 (ohm) R410 0 HF CN1 RFSWHL NRFSTEY LDON NRST R212 82K R211 22K Q501 DTC114YU C406 0.1 Motor WREF- R407 47K IC202 C405 0.1 TEMP LIMIT IN CN402 BA6289F R406 47K C404 REFRECT DGND...

  • Page 65: Vr, Lcd

    CD MD RADIO M A R K S L E E P B A S S R E C . M O N O S U R R O U N D VR, LCD R A N D A M WC350 VR UNIT LCD UNIT...

  • Page 66: Exploded Views

    EXPLODED VIEWS UNIT ASSEMBLY 1/3 F401 T401 LC950 (1/2) (2/2)

  • Page 67

    UNIT ASSEMBLY 2/3 (2/2) (1/2)

  • Page 68

    UNIT ASSEMBLY 3/3...

  • Page 69: Case Unit

    CASE UNIT...

  • Page 70: Top Case Unit

    TOP CASE UNIT...

  • Page 71: Md Mechanism Unit

    MD MECHANISM UNIT...

  • Page 72: Cd Mechanism

    CD MECHANISM...

  • Page 73: Parts List

    PARTS LIST ZD-3 Notes: 1. Prices and specifications are subject to change without pointer notice. 2. As for spare parts order and supply, refer to the “GUIDEBOOK for Spare parts Supply”, published separately. 3. The numbers in item column correspond to the...

  • Page 74

    PARTS PRICE LIST ZD-3 Item Parts Code Parts Name Specification Q Price Code R Remarks ELECTRICAL PARTS FUSE F- 401 94820455 FUSE/2A,250V 0045-024-0-41 IC 001 94820456 IC TA2111N IC 101 94820474 IC AN8771NFH-V IC 102 94820471 IC TC74VHCT541AFT 1 IC 201...

  • Page 75

    Item Parts Code Parts Name Specification Q Price Code R Remarks TOP CASE UNIT 94820200 CD OPEN KEY 4754-869-0-01 94820201 KEY A/TOP 4754-874-0-01 94820202 KEY B/TOP 4754-875-0-01 94820203 KEY C/TOP 4754-876-0-01 CASE B UNIT 94820118 ANTENNA/TELESCOPIC 0046-137-0-0013 OUTER PARTS 94820139 FLAT CABLE 9P/FLEXIBLE 4754-551-0-00 94820140 CONNECTOR 11P/WIRE 4754-555-0-00...

  • Page 76

    CASIO TECHNO CO.,LTD. Overseas Service Division Nishi-Shinjuku Kimuraya Bldg. 1F 5-25, Nishi-Shinjuku 7-Chome Shinjuku-ku, Tokyo 160-0023, Japan AF1100101A...

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