IMPORTANT SERVICE NOTES (FOR UK ONLY) ................................................................................................................ 3

SPECIFICATIONS ................................................................................................................................................................. 4

NAMES OF PARTS ............................................................................................................................................................... 5

OPERATION MANUAL .......................................................................................................................................................... 7

DISASSEMBLY .................................................................................................................................................................... 10

REMOVING AND REINSTALLING THE MAIN PARTS ....................................................................................................... 13

ADJUSTMENT ..................................................................................................................................................................... 16

EXPLANATION OF ERROR DISPLAY ................................................................................................................................ 30

TEST MODE ........................................................................................................................................................................ 32

BLOCK DIAGRAM ............................................................................................................................................................... 36

SCHEMATIC DIAGRAM/WIRING SIDE OF P.W.BOARD ................................................................................................... 42

NOTES ON SCHEMATIC DIAGRAM .................................................................................................................................. 69

TYPES OF TRANSISTOR AND LED ................................................................................................................................... 69

WAVEFORMS OF CD CIRCUIT ........................................................................................................................................... 70

WAVEFORMS OF MD CIRCUIT .......................................................................................................................................... 71

TROUBLE SHOOTING ........................................................................................................................................................ 73

FUNCTION TABLE OF IC .................................................................................................................................................... 83

PARTS GUIDE/EXPLODED VIEW

PACKING OF THE SET (FOR UK ONLY)

SERVICE MANUAL

• In the interests of user-safety the set should be restored to its

CONTENTS

SHARP CORPORATION

MD-ZV30H

original condition and only parts identical to those specified should

be used.

MD-ZV30H

No. S5734MDZV30H/

Page

Table of Contents

Troubleshooting

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Summary of Contents for Sharp MD-ZV30H

Page 1: Table Of Contents
MD-ZV30H SERVICE MANUAL No. S5734MDZV30H/ MD-ZV30H SRS technology Licensed from SRS Labs. SRS technol- • In the interests of user-safety the set should be restored to its ogy holds the following patents:U.S. Patent No. original condition and only parts identical to those specified should 4,748,669 and U.S.
Page 2: Safety Precaution For Service Manual (For Uk Only)
MD-ZV30H SAFETY PRECAUTION FOR SERVICE MANUAL (FOR UK ONLY) WARNINGS The AEL (ACCESSIBLE EMMISSION LEVEL) of the laser power output is less than class 1 but the laser component is capable of emitting radiation exceeding the limit for class 1. Therefore it is important that the following precautions are observer during servicing to protect your eyes against exposure to the laser beam.
Page 3: Important Service Notes (For Uk Only)
MD-ZV30H Precaution to be taken when replacing and servicing the laser pickup. The following precautions must be observed during servicing to protect your eyesvagainst exposure to the laser. Warning of possible eye damage when repairing: If the AC power plug is connected when the inner cover of the unit is removed, the laser will light up during focus access (about 1 second) (Fig.
Page 4: Specifications
MD-ZV30H FOR A COMPLETE DESCRIPTION OF THE OPERATION OF THIS UNIT, PLEASE REFER TO THE OPERATION MANUAL. SPECIFICATIONS (MiniDisc recorder section) (Tuner section) Type: MiniDisc recorder Frequency range: FM; 87.5 - 108 MHz Signal readout: Non-contact, 3-beam semi- AM; 522 - 1,620 kHz FM;...
Page 5: Names Of Parts
MD-ZV30H NAMES OF PARTS Display window Disc Name Indicator 1 2 3 4 5 6 Track Name Indicator Date Indicator Level Meter/Character Information Display Programme Indicator DISC TRACK DATE OVER Random Play Indicator STEREO PRGM RANDOM SURROUND MONO LP CLOCK...
Page 6 MD-ZV30H Names of controls Clear Button FM Stereo Mode Button MD/CD/TUNER DIRECT KEY Tuner Call (Band Select) Button Tuner Preset/CD/MD Track Number Input Buttons Programme Button 10/0 Play Mode Button ST-MODE TUNER MD Record Button: BAND PROGRAM CLEAR P-MODE MD Record Mode Button...
Page 7: Operation Manual
MD-ZV30H OPERATION MANUAL SETTING THE CLOCK When recording, the date and time are recorded on the MiniDisc (page 18), but only when the date and time have been previously DISC-1 entered, as described in the instructions below. DISC-2 DISC-3 TUNING...
Page 8 MD-ZV30H – 8 –...
Page 9 MD-ZV30H – 9 –...
Page 10: Disassembly
MD-ZV30H DISASSEMBLY PROCEDURE FIGURE STEP REMOVAL Caution on Disassembly When disassembling the machine or assembling it after MD Mechanism 1. Screw ..... (P1) x4 12-1 repair, observe the following instructions so as to ensure Unit 2. MD Mechanism Holder (P2) x2 safety and keep its performance.
Page 11 MD-ZV30H (H1) x3 ø3 x12mm Tuner PWB Main PWB CD Changer Servo PWB Block (F2) x2 Washerx2 (F1) x4 (G1) x2 (G2) x2 Tray ø3 x12mm ø3 x12mm ø3 x8mm Switch PWB Frame (F2) x1 (K1)x3 Display PWB Figure 11-1...
Page 12 MD-ZV30H Shield Case (Top) (P3) x1 ø2 x4mm (R1) x 4 (R2) x 1 ø1.7 x 8.9mm ø1.7 x 5 mm MD Flat Cable (R3) x 1 (P4) x1 (P3) x1 ø2 x4mm MD Main CNS1901 Release the (R4) x 1...
Page 13: Removing And Reinstalling The Main Parts
MD-ZV30H REMOVING AND REINSTALLING THE MAIN PARTS (A1) x 6 MD MECHANISM SECTION Remove solder joint Remove the MD mechanism according to the disassembling procedure 1, 3, 14 to 16. (See p. 10.) How to remove the motor PWB (See Fig. 13-1.) 1.
Page 14 MD-ZV30H How to remove the optical pickup (E1) x 3 (See Fig. 14-1.) ø1.7 x 9mm 1. Remove the screw (E1) x 3 pcs. (E2) x 1 Caution: MD pickup guide Take utmost care so that the magnetic head is not damaged.
Page 15: Cd Mechanism Section
MD-ZV30H CD MECHANISM SECTION (A1) x2 ø2.6 x5mm For the procedure to remove the CD mechanism from the Stop Washer main unit, refer to Disassembling Procedure, Steps 1, 4, 5, 10, (A3) x1 and 13. (p.10). Pickup How to Remove the optical pickup (See Fig.
Page 16: Adjustment
MD-ZV30H ADJUSTMENT TUNER SECTION fL: Low-range frequency System Microcomputer TUNER TEST mode fH: High-renge frequency For reference • FM RF When the TUNER TEST mode has been set, frequency can be set in the memory as an initial setting as shown in the table...
Page 17 MD-ZV30H CD SECTION Extension cable When making adjustment or checking operation, use the following extension cable as necessary. Type Extension cable Parts No. Price Code For CD PWB (TP751, 6-pin) QCNWK0043AFZZ CD SERVO PWB CNP700A TP751 BI851/CNS552 CNP751 CNS903 Extension cable for...
Page 18 MD-ZV30H Button operation in CD test mode 1. [STOP] : Specific operation is stopped, resulting in TEST mode waiting state. The pickup slide is kept in stop state. 2. [ : The pickup slides toward the external periphery. 3. [ : The pickup slides toward the internal periphery.
Page 19 MD-ZV30H Reference Vertically CD level symmetrical 1/2 VCC waveform 0.5~1.5Vp - p Adjust to get uniform and minimized error waveform. Figure 19-1 TRACKING ERROR BALANCE Figure 19-3 FOCUS OFFSET/TRACKING OFFSET Apply a black tape (1.2 to 1.5 wide). 27kΩ Waveform...
Page 20 MD-ZV30H MD SECTION 1. Preparation for ajustment Test disc Type Test disc Parts No. Price Code High reflection disc TGYS1 (SONY) RRCDT0101AFZZ Low reflection disc Recording minidisc UDSKM0001AFZZ Head adjusting transparent disc RRCDT0103AFZZ Extension cable (See Fig. 29-3) Type Parts No.
Page 21: Auto Mode
MD-ZV30H • Test Mode 1. AUTO Mode • Automatic adjustment is performed. (After adjustment the grating adjustment mode is set.) • Set value is output through the display interface. • Continuous playback is performed (error rate display). 2. RESULT Mode •...
Page 22: Result Mode
MD-ZV30H 2. RESULT Mode Step No. Remarks Display Setting Method Step 1 Test mode CD Play state [ tsm Step 2 Press the MD Play button twice. RESULT menu mode R E S U L T Step 3 Press the CD Play button.
Page 23 MD-ZV30H 4. EEPROM setting mode EEPROM (IC1402) writing procedure 1. Procedure to replace EEPROM and to write microcomputer initial value in EEPROM (1) Replace EEPROM. (2) Refer to the latest "EEPROM DATA LIST". (3) Holding down the "NAME/TOC EDIT" button and "MD PLAY" button, plug the AC cord into the AC socket to start the TEST mode.
Page 24 MD-ZV30H EEPROM DATA LIST After spin setting After "EEPROM SET" [CD PLAY] tracking setting [MD PLAY] focus setting Setting Setting Item indication Item indication [MD PLAY] [MD PLAY] [CD PLAY] F F 1 [CD PLAY] T F 1 [CD PLAY]...
Page 25 MD-ZV30H EEPROM SETTING MODE FLOW CHART TEST mode STOP state t m s CD PLAY X4 E E P R O M_S E T EEPROM setting menu MD PLAY ____F o c u s _____ MD PLAY CD PLAY CD PLAY X2...
Page 26 MD-ZV30H 5. INNER Mode Step No. Display Setting Method Remarks Step 1 Test mode STOP state [tsm Step 2 Press the TRACK button. INNER menu I N N E R Step 3 Press the MD Play button. Measurement of INNER switch position Step 4 Press the MD Stop button.
Page 27: Eject Mode
MD-ZV30H 8. EJECT Mode Step No. Display Remarks Setting Method Step 1 Test mode EJECT state E J E C T Step 2-1 Press the CD STOP button. Record power output state [ r p w Step 3 Press the CD STOP button.
Page 28 MD-ZV30H Forced rotation of loading motor While the display indication is in AUTO and EJECT state, the loading motor can be forcibly rotated by turning the Jog dial. Adjustment of magnetic head mounting Clearance position • When the magnetic head and optical pickup have been replaced, be sure to adjust the mounting position.
Page 29: Top Side
MD-ZV30H 2. Jitter adjustment and checking method JITTER METER MD MAIN PWB VR1110 IC1201 23PIN (TP1112) EFMI IC1201 13PIN (TP1274) Figure 29-1 After performing the automatic adjustment in AUTO mode of test mode, using the low reflection MD disc set the jitter to the best...
Page 30: Explanation Of Error Display
MD-ZV30H EXPLANATION OF ERROR DISPLAY Error display Errors Corrective action Can't REC • Defect occurred 10 times successively during REC-PLAY. • Check that disc is free from flaws, dust, • Due to occurrence of defect during REC-PLAY the fingerprint, black spots, etc. Check for recordenable cluster became zero.
Page 31: Explanation Of Mechanism Error
MD-ZV30H Error display Errors Corrective action UTOC W ERROR • An error occurred during UTOC rewriting, so that UTOC • The disc has flaw. Replace the disc. could not be rewritten corrctly. FOCUS ERROR • When the disc was loading, the focus could not be set.
Page 32: Test Mode
MD-ZV30H TEST MODE Test functions The TEST mode is entered if the following button is pressed twice when initialization is performed or power supply is restored after power failure Test name Button name Button name CD test N-EDIT C-PLY MD test...
Page 33 MD-ZV30H Buttons and commands to be used in MD TEST mode Button name Command Functions POWER+MD PLAY Setting the MD TEST mode C-PLAY Setting the servo adjustment mode E-START Setting the record mode T-EDIT Setting other mode M-REC Menu change in specific mode...
Page 34 MD-ZV30H 7. AUX TEST mode The AUX TEST mode is entered by pressing the POWER+M-STOP buttons. Whole display lights during TEST mode button input (min. 2 sec). After completion of whole lighting the microcomputer version must be displayed for 1.5 seconds.
Page 35 MD-ZV30H CD DISC display CD TEST ƒ DISC TRACK DATE OVER Time indication STEREO PRGM RANDOM SURROUND MONO LP CLOCK TOTAL REMAIN 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20...
Page 36: Block Diagram
MD-ZV30H RIPPLE FILTER QA101 A+9V FM ROD ANTENNA FM BAND PASS FILTER FILTER L=AM 10.7MHz DETECTOR TA7358AP MONO/S (OUAD) AMIF FRONT END CF22 SWITC L=MONO L-CH OUT AM RF IN FM IF/FM MPX./AM IF AMP. R-CH OUT AM OSC TA2057N...
Page 37 MD-ZV30H ICA104 ICA102 ICA101 BU4052CF BU4066BCF SRS5250S SRS MODE INPUT RIPPLE SELECTOR SELECTOR FILTER QA101 POWER AMP. A+9V (B. T. L) ICA103 IC501 BU2092F LA4705SH SRS SELECTOR HEADPHONES J531 A/D +5V 13 16 11 18 L=AM MONO/STEREO SWITCHING CF22 AUDIO...
Page 38 MD-ZV30H CH1-OUTA PICKUP UNIT CH1-OUTB CH1-INA FOCUS COIL CH1-INB TRACKING COIL TR-B CD+5V VREG OUT VOLTAGE REGULATOR MUTE Q701 IC700 BA5920FP FOCUS/TRACKING/SPIN/ SLIDE DRIVER Q751 LASER DRIVER CH2-INB CH2-INA CD+5V CH2-OUTB CH2-OUTA IC750 M62472FP OP OUT SERVO CONTROL HF– –...
Page 39 MD-ZV30H CH1-OUTA D. BUF – – CH1-OUTB CH4-OUTA M702 SLIDE D. BUF MOTOR D. BUF CH1-INA CH4-OUTB M701 D. BUF SPIN CH4-INA MOTOR CH1-INB TR-B CH4-INB SW702 + – PICKUP IN – + BIAS IN VREG OUT ATOR MUTE IC700...
Page 40 MD-ZV30H SWITCHING QB102 TRAY MOTOR MOB2 MOB1 MAIN CAM MOTOR – – VREF VREF OUT1 OUT1 M GND M GND OUT2 OUT2 M +9V M +9V MICOM 44 43 42 41 SW-B SW-1 SW-C IKISUGI SW-D CLOCK ICB101 M-CONT1 MODE DATA...
Page 41: Head Driver
MD-ZV30H TO MAIN PWB TO MAIN PWB CNS1901 1, 2 VOLTAGE D +10V TRANSFORMATION D +10V D +3.15V IC1913 74VHC08F Q1801 DC-DC A +3.15V CONVERTER CONTROL A +3.15V D +3.15V Q1701 L1801 D +6V/7.5V L1203 SYSTEM DC-DC CONTROL CONVERTER Q1807...
Page 42: Schematic Diagram/Wiring Side Of P.w.board
MD-ZV30H R351 CD/MD R353 C351 2.2/50 R357 R355 C353 2.2/50 R361 R367 R359 C361 C355 4.7K 2.2/50 C367 C363 C359 0.012 4.7/25 220P LINE OUT L R401 R365 LINE OUT R 3.9K LINE GND C357 10/16 R369 LOGIC 5V TUNER 5V...
Page 43: Power Amp
MD-ZV30H MAIN PWB-A1 TO SRS PWB CNPA4 P57 8-H C403 R401 R501 R503 1/50 3.9K 3.3K POWER AMP. C518 C501 R403 R409 10/16 0.1/50 IC501 470K 3.9V 6.8K R520 MUTING 0.6V C517 R411 LA4705SH Q503 100K 10/16 Q401 2SC2827 B...
Page 44 MD-ZV30H SPEAKER SPEAKER SP501 L-CH SP502 R-CH COLOR TABLE BROWN RD(R) ORANGE YELLOW GREEN BLUE VIOLET GRAY WH(W) WHITE BLACK PINK CNS502 CNSA2 TO SRS PWB CNPA2 P55 8-F CNS601 FROM CD SERVO PWB P54 2-E C601 CNS552 D601 C615...
Page 45 MD-ZV30H FROM DISPLAY PWB FROM DISPLAY PWB P49 8-G P49 10-G BM953 BM954 MAIN PWB-A1 BW553 BW554 C569 TO MD PWB P66 5-A CNS1901 C352 C362 C364 C372 C573 C370 C351 C376 C368 C374 1 2 3 4 C387 C390...
Page 46 MD-ZV30H JOG2 JOG2 KEY2 JOG1 JOG1 KEY2 JOG1 KEY2 KEY1 JOG2 KEY1 FW2002 FW2001 SW2013 SW2021 SW2001 R2019 R2001 MD PLAY/ CD TRAY1 POWER PAUSE SW2014 SW2020 SW2011 SW2008 SW2022 SW2002 MD STOP JOG DIAL R2020 R2002 TRACK NAME/TOC CD TRAY2 CD PLAY/ 1.5K...
Page 47 MD-ZV30H 94 93 92 89 88 87 86 85 84 83 82 81 80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53...
Page 48 MD-ZV30H TUNING TUNING R2017 R2016 DOWN SW2018 SW2017 SW2020 JOG DIAL R2015 R2013 R2014 R2018 SW2015 MD EJECT SW2019 SW2016 MD RECORD SW2013 ENTER SW2014 MD STOP MD PLAY/PAUSE SWITCH PWB-B2 FW2002 SWITCH PWB-B3 SW2012 SW2011 EDIT SW2010 SW2008 TRACK...
Page 49 MD-ZV30H R2022 SW2021 CD TRAY 1 SW2024 DISC-1 CD TRAY 2 SW2022 SW2025 DISC-2 SW2026 SW2023 DISC-3 CD TRAY 3 SWITCH PWB-B4 R2024 R2003 R2004 R2005 R2001 R2002 R2025 SW2005 SW2006 VOLUME VOLUME DOWN TUNER SURROUND SW2002 SW2003 SW2001 (BAND)
Page 50 MD-ZV30H P52 6-H FROM CD SERVO PWB CNS3 CNP3 VOLTAGE 220P 100P 0.8V 1.5V 0.5V 4.7V 1.5V 5.2V FM FRONT END FM ROD BRACKET GND 4.7V 5.2V ANTENNA TA7358AP 220P 4.7V TO MD UNIT GND 4.7V FM BAND PASS OSC.
Page 51 MD-ZV30H J303 LINE OUT MIC IN J301 J302 MONITOR AUX INPUT IC302 LTAGE VOLTAGE VOLTAGE VOLTAGE 2.4V L301 0.5V 2.4V 1µH 4.8V 5.2V 4.8V 8.6V 5.2V 5.1V(0V) R308 C318 R307 0V(5.1V) 100P C317 100P 2.5V 4.8V 2.5V(0V) 1.6V 2.5V(0V) R310 R309 1.6V...
Page 52: Pickup Unit
MD-ZV30H LASER DRIVER R753 Q751 SERVO 2SA1015GR C750 C751 CONTROL (4V) (1.8V) 4.7/25 – IC750 R790~R793: 120K 120K 120K 120K (1.8V) – 1/2VCC M62472FP R793 R792 – R790 – – – AMP. R791 AMP. – R794 R755 – HFOK R795...
Page 53 MD-ZV30H CD SERVO PWB-C SERVO ONTROL IC750 DIGITAL OUT 62472FP R760 4.7K D810 R758 MTZJ3.0B HF– – R759 AMP. C773 0.001 HFOK R781 1.2K C772 – C811 0.033 100/10 330K CD +5V C771 AMP. 0.068 CD GND R780 C769 C817...
Page 54 MD-ZV30H CNS903 TO DISPLAY PWB CNP903 P49 12-F CD MOTOR PWB-D CD SERVO PWB-C FOCUS TRACKING R812 OFFSET R757 GAIN TRACKING VR752 R761 OFFSET PICKUP IN VR753 TP751 SPIN MOTOR C756 TRAKING VR754 M701 ERROR R764 BALANCE R762 R809 VR751...
Page 55 MD-ZV30H CD CHANGER PWB-H RB146 CNS555 LB105 TO MAIN PWB RB103 LB102 CNP555 CB125 RB140 P44 6-E CB121 CB126 CB151 RB142 RB145 RB141 RB144 ICB101 CB120 RB143 RB161 ICB102 33 34 CB107 CB123 CB106 LB107 CB108 RB105 MOB2 CB109 RB106...
Page 56 MD-ZV30H CD CHANGER PWB-H RB145 6.8K RB146 RB153 RB144 SWITCHING QB102 CB126 KRC107 M 100P 4.92V RB152 4.95V Vref 4.92V OUT1 RB143 0.6V CB132 8.2K Vref 4.97V 100P 5.7V LB107 OUT1 RB151 0.6V 10µH 8.2K RB141 8.7V CB133 LB109 (1/2W) 22µH...
Page 57 MD-ZV30H SRS MODE SELECTOR SRS PWB-G ICA102 BU4052BC FM SIGNAL RA135 6.8K RA134 (5.1V) 1.5K 4.06V RA131 RA133 ICA104 4.06V RA132 4.7K 100K RA130 4.06V VOLTAGE 100K 4.06V RA128 4.1V 4.7K 4.06V RA129 8.1V 4.1V 4.1V RA127 CA124 1.5K 4.1V 0.022...
Page 58: Optical Pickup Unit
MD-ZV30H SITUATION : MD MAIN PWB-E TP1142 C1144 (CH) R1164 C1138 C1139 C1148 (CH) (CH) 1.27V 1.77V 1.27V 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 1.27V EFMI/ 1.27V EFMI...
Page 59 MD-ZV30H VREF R121 C1208 0.047 TP1210 TP1112 C1148 R1161 (CH) (CH) C1137 99 98 97 96 95 94 93 92 91 90 89 88 0.0068 1.77V 9 58 57 56 55 C1209 VDD1 EFMI/ 0.47 C1136 R1157 0.0068 DGND 1.53V...
Page 60 MD-ZV30H SITUATION : R1211 1208 0.047 TP1272 1.58V R1210 R1221 2 91 90 89 88 87 86 85 84 83 82 81 TP1208 EXPORT6 EXPORT5 EXPORT4 EXPORT3 EXPORT2 EXPORT1 R1254 EXPORTO 1.56V DOUT 1.5V(DIG IN) 0V R1202 IC1201 1.3V LR37643 1.3V...
Page 61 MD-ZV30H R1662 C1657 MD SIGNAL C1656 0.0056 0.0056 R1664 SPNO CD SIGNAL 1.75V 4 3 2 1 PLAYBACK – VREF SIGNAL – RECORD SIGNAL R1660 C1655 SLDO IC1602,IC1603: 0.0047 C1654 OPE AMP. 0.0047 C1653 R1656 820P 6.8K 4 3 2 1 –...
Page 62 MD-ZV30H SITUATION : TP1102 TP1101 CNS1101 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 FLEXIBLE 9 8 7 6 5 4 3 2 1 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 T.COIL...
Page 63 MD-ZV30H TP1423 TP1404 R1422 R1430 VREF3.15V VREF3.15V R1401 D1401 R1404 R1423 R1421 DA204K 3.3K TP1405 TP1458 C1402 R1429 0.047 TP1457 R1472 TP1456 99 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81 3.13V...
Page 64 MD-ZV30H SITUATION : R1723 R1747 100K AD.GND R1722 VREF3.15V 44 43 42 41 40 39 38 37 36 35 ADBCK 1.57V 1.57V ADWS 1.57V MODE0 1.57V C1742 3.15V(A.REC) ADENB 47/4 OVLOAD 3.15V C1701 3.15V(A.REC) ADPON 3.15V VDDD-AD VSSD-AD VSSA-AD 3.15V...
Page 65 MD-ZV30H R1747 100K .GND R1722 38 37 36 35 R1746 100K VSSD DAWS 1.57V DABCK 1.57V DADEN C1717 DAPON 3.15V 0.22 3.15V VDDD-AD/DA R1721 VSSD-AD/DA C1741 VSSA-DA VDDA-DA 3.15V C1716 1.56V VOUTR 0.22 DACR C1714 0.0022 R1720 IC1701 TDA1309H A/D,D/A...
Page 66 MD-ZV30H CNP556 TO MAIN PWB P45 12-B MD FLAT CABLE(404) MD MAIN PWB-E(TOP VIEW) FROM MD MECHANISM SWITCH PWB CNS1601A 24 25 P68 3-D C1711 C1708 R1706 R1703 C1700 R1705 R1704 R1720 C1704 C1705 R1713 C1714 C1702 R1733 R1427 R1731...
Page 67 MD-ZV30H :Through-hole where the top, bottom and +B patterns are connected. :Through-hole where the top, bottom and ground patterns are connected. :Through-hole where the top and bottom patterns are connected. COLOR R D ( R ) W H ( W )
Page 68 MD-ZV30H MD MECHANISM SWITCH PWB-F1 COLOR TABLE SW1953 BROWN LEAD IN RD(R) ORANGE YELLOW GREEN SW1954 BLUE MD PLAY VIOLET GRAY SW1955 WH(W) WHITE MD RECORD SW1956 BLACK LOADING PINK R1904 R1903 R1901 CNP1901 1 2 3 4 5 SW1951A/B...
Page 69: Notes On Schematic Diagram
MD-ZV30H NOTES ON SCHEMATIC DIAGRAM • Resistor: To differentiate the units of resistors, such symbol as K and (CH), (TH), (RH), (UJ): Temperature compensation M are used: the symbol K means 1000 ohm and the symbol (ML): Mylar type M means 1000 kohm and the resistor without any symbol is •...
Page 70: Waveforms Of Cd Circuit
MD-ZV30H WAVEFORMS OF CD CIRCUIT 0.2V/1mS (DC range) IC700 2V/1mS (DC range) [Disc playback mode] [Disc playback mode] Potential difference 0V 1/2VCC Disc free from flaw TRIG Disc having flaw IC750 (the same as above) In test mode 2 (disc is not loaded.
Page 71: Waveforms Of Md Circuit
MD-ZV30H WAVEFORMS OF MD CIRCUIT EFM (MO DISC) PLAY MODISC (NORMAL PLAY) Stopped NORM 100M S/s Stopped CH1 500mV CH1 =500mV CH2 =500mV CH4 =2V 500ns/div 500µs/div DC 10:1 TP1112 (EFM) TP1104 (T+) TP1106 (T-) V1(1) 2.210V V2(1) 450.0mV V(1) 1.760V PLAYBACK MD –...
Page 72 MD-ZV30H PLAY (MO DISC) PLAY Stopped Stopped CH1 = 2V CH2 = 2V CH1 = 2V CH2 = 2V 5µs/div 5µs/div LRCK SYSCLK DADATA DABCK PLAY (PLAYBACK MD) Stopped Stopped CH1 = 2V CH2 = 2V CH1 = 2V CH2 = 2V 5µs/div...
Page 73: Trouble Shooting
MD-ZV30H TROUBLE SHOOTING (CD SECTION) CD fails to operate If the objective lens of optical pickup is contaminated, CD may fail to operate. At first clean the objective lens, and check playback operation. If CD does not operate persistently, check as follows.
Page 74 MD-ZV30H • Laser does not light Is 5V applied to the pin 13 CD LD ON terminal of IC901? IC901 is defective. Is +5V applied to the C751 side of Is +4.0V applied to the emitter of Q751? R753 is defective..
Page 75 MD-ZV30H • HF trouble Does output (tracking error signal) appear on the pin 4 of Check CNP751. If it is normal, the optical pickup is defective. TP751 in the CD TEST mode 3? Abnormal Normal Is the tracking gain adjusting VR752 set to minimum? Adjust again tracking gain.
Page 76 MD-ZV30H • Triangular wave for focus servo is not output. Check the pins 34 and 35 of IC750, Is +5V applied to the pin 36 of IC750? +5V line of IC750 is defective. R780 and C769. If OK, IC750 is defective.
Page 77 MD-ZV30H • Sound is not output. IIs digital signal output from the pin 1 (digital OUT) of BI800/ Check the pin 28 of IC800. CNS553? Is digital signal sent to the MD PWB and CNS1901 pin 8? Check CD and MD connection.
Page 78: Trouble Shooting (Md Section)
MD-ZV30H TROUBLE SHOOTING (MD SECTION) When MD fails to operate If the objective lens of optical pickup is contaminated, MD may fail to operate. At first, clean the objective lens to check playback operation. If MD fails persistently to operate, perform checks as follows.
Page 79 MD-ZV30H • Disc loading is not normal. Is disc loaded when it is inserted? Check CNP1601 and SW1956. Is the pin 4 of CNP1601 set to L state? Check IC1401. Is change observed on the pin 6 or 7 of IC1601? Check CNP1601 and IC1601.
Page 80 MD-ZV30H • Normal playback When it has been confirmed that EEPROM value is normal in the TEST mode Is initialization performed normally when high reflection disc Does the playback time display advance? is played back? Check IC1201 Does disc rotate normally?
Page 81 MD-ZV30H • Record and playback operation Insert the low reflection disc, and after verifying the audio output in the normal mode playback set the record/playback TEST mode Recording from start address cannot be performed. Check whether the disc is record-prohibited.
Page 82 MD-ZV30H • Disc motor fails to run Check soldering joint and parts of pins 58 and 59 of IC1201, Does waveform appear on the pins 58 and 59 of IC1201 IC1603, and peripheral circuit. and the pin 1 of IC1603 in the TEST mode focus gain...
Page 83: Function Table Of Ic
MD-ZV30H FUNCTION TABLE OF IC IC901 RH-iX0188AWZZ(IX0188AW):System Microcomputer (1/3) Pin No. Port Name Terminal Name Input/Output Function P77/AN7 KEY1 Input A/D input P76/AN6 KEY2 Input A/D input P75/AN5 KEY3 Input A/D input P74/AN4 JOG1 Input JOG1 input P73/AN3 JOG2 Input...
Page 84 MD-ZV30H IC901 RH-iX0188AWZZ(IX0188AW):System Microcomputer (2/3) Port Name Pin No. Terminal Name Input/Output Function P23/DIG19 DIG07 Output Digit output for FL P22/DIG18 DIG06 Output Digit output for FL P21/DIG17 DIG05 Output Digit output for FL P20/DIG16 DIG04 Output Digit output for FL...
Page 85 MD-ZV30H IC901 RH-iX0188AWZZ(IX0188AW):System Microcomputer (3/3) Port Name Pin No. Terminal Name Input/Output Function PA1/SEG01 SEG24 Output Segment output for FL PA0/SEG00 SEG25 Output Segment output for FL Input Pull-down voltage input for FL drive AVSS AVSS Input A/D reference voltage input (GND)
Page 86 MD-ZV30H IC1401 RH-iX2565AFZZ (IX2565AF):MD System Control Microcomputer (1/2) Pin No. Terminal Name Input/Output Function P96/ANEX1 Output NC (Not Connect) P95/ANEX0 Output NC (Not Connect) P94/DA1 Output LDVAR (laser power adjusting output) P93/DA0 Output ADJS (automatic adjusting step check) P92/TB2IN Output...
Page 87 MD-ZV30H IC1401 RH-iX2565AFZZ (IX2565AF):MD System Control Microcomputer (2/2) Pin No. Terminal Name Input/Output Function Input/Output SYSD2 (ENDEC/ATRAC data bus 2) Input/Output SYSD1 (ENDEC/ATRAC data bus 1) Input/Output SYSD0 (ENDEC/ATRAC data bus 0) Output NC (Not Connect) Output NC (Not Connect)
Page 88 MD-ZV30H - MEMO - – 88 –...
Page 89: Parts Guide
“HOW TO ORDER REPLACEMENT PARTS” To have your order filled promptly and correctly, please furnish the For U.S.A. only following information. Contact your nearest SHARP Parts Distributor to order. 1. MODEL NUMBER 2. REF. No. 3. PART NO. 4. DESCRIPTION For location of SHARP Parts Distributor, Please call Toll-Free;...
Page 90 MD-ZV30H PRICE PRICE DESCRIPTION PART CODE PARTS CODE DESCRIPTION RANK RANK INTEGRATED CIRCUITS D11~13 VHD1SS133//-1 AA Silicon,1SS133 D351 VHEMTZJ5R1B-1 AC Zener,5.1V,MTZJ5.1B D555 VHERD5R1JS2-1 AB Zener,5.1V,RD5.1JS2 VHITA7358AP-1 AG FM Front End,TA7358AP VHITA2057N/-1 AQ FM IF/FM MPX./AM IF,TA2057N D556 VHD1SS133//-1 AA Silicon,1SS133...
Page 91 MD-ZV30H PRICE PRICE DESCRIPTION PARTS CODE DESCRIPTION PART CODE RANK RANK VR754 92LVR-S473NB-M AC 47 kohms (B),Semi-VR C317,318 VCKYMN1HB101K J AA 100 pF,50V AB 10 µF,16V,Electrolytic [Tracking Offset] C319~322 RC-GZA106AF1C AA 0.022 µF,25V VR1110 RVR-M1105AFZZ AB 68 kohms (B),Semi-VR C323 VCTYMN1EF223Z AB 2.2 µF,50V,Electrolytic...
Page 92 MD-ZV30H PRICE PRICE DESCRIPTION PART CODE PARTS CODE DESCRIPTION RANK RANK AB 0.068 µF,16V C771 VCKYTV1CB683K C1412 VCKYCY1HB681K AA 680 pF,50V AA 0.033 µF,50V AA 0.022 µF,16V C772 VCKYTV1HB333K C1421 VCKYCY1CB223K AA 0.001 µF,50V AA 0.022 µF,16V C773 VCKYTV1HB102K C1422,1423 VCKYCY1CB223K AA 0.022 µF,16V...
Page 93 MD-ZV30H PRICE PRICE DESCRIPTION PARTS CODE DESCRIPTION PART CODE RANK RANK AA 0.022 µF,50V CA132 VCKZPA1HF223Z R322 VRD-MN2BD561J AA 560 ohms,1/8W AB 4.7 µF,50V,Electrolytic CA133,134 RC-GZA475AF1H R323 VRD-MN2BD181J AA 180 ohms,1/8W AB 0.039 µF,16V CA135,136 VCTYPA1CX393K R324,325 VRD-MN2BD473J AA 47 kohms,1/8W...
Page 94 MD-ZV30H PRICE PRICE DESCRIPTION PART CODE PARTS CODE DESCRIPTION RANK RANK R776 VRS-TV2AB223J AA 22 kohms,1/10W R1131 VRN-CY1JD224D AA 220 kohms,1/16W,±1%,Metal R777 VRS-TV2AB333J AA 33 kohms,1/10W Film R778 VRS-TV2AB224J AA 220 kohms,1/10W R1133 VRS-CY1JB123J AA 12 kohms,1/16W R779 VRS-TV2AB123J AA 12 kohms,1/10W...
Page 95 MD-ZV30H PRICE PRICE DESCRIPTION PARTS CODE DESCRIPTION PART CODE RANK RANK R1658 VRS-CY1JB183J AA 18 kohms,1/16W R2017 VRD-ST2CD822J AA 8.2 kohms,1/6W R1659 VRS-CY1JB473J AA 47 kohms,1/16W R2018 VRD-ST2CD153J AA 15 kohms,1/6W R1660 VRS-CY1JB183J AA 18 kohms,1/16W R2019 VRD-ST2CD102J AA 1 kohm,1/6W...
Page 96 MD-ZV30H PRICE PRICE PART CODE DESCRIPTION PARTS CODE DESCRIPTION RANK RANK CNP555 92LCONE4P53253 J AB Plug,4Pin SW2022 QSW-K0003AWZZ J AD Switch,Key Type [CD Tray 2] CNP556 QCNCWZJ24AWZZ J AK Socket,24Pin SW2023 QSW-K0003AWZZ J AD Switch,Key Type [CD Tray 3] CNP601...
Page 97: Cd Mechanism Parts
MD-ZV30H PRICE PRICE DESCRIPTION PARTS CODE DESCRIPTION PART CODE RANK RANK SW1951A/B QSW-P1005AFZZ AF Switch,Push Type SWB108 QSW-P0920AFZZ AC Switch,Push Type [CD Set] [Disc Protect/Disc Media] CABINET PARTS SW1953 QSW-M0157AFZZ AD Switch,Slide Type [Lead In] SW1954 QSW-M0159AFZZ AC Switch,Push Type [MD Play]...
Page 98: Other Service Parts
MD-ZV30H PRICE PRICE PART CODE DESCRIPTION PARTS CODE DESCRIPTION RANK RANK TINSZ0217AWZZ AU Operation Manual QANTL0001AWZZ AL AM Loop Antenna QACCB0004AW00 J BB AC Power Supply Cord [For UK] QACCE0007AW00 J AR AC Power Supply Cord [For Europe] 92LBAG1658B AA Polyethylene Bag,AC Power...
Page 99 MD-ZV30H 503x4 MD Mechanism 25x2 15x2 SW1951A/B PWB-E 21x2 SW1956 27x2 502x4 SW1955 SW1953 504x2 SW1954 PWB-F1 M1953 M1952 26x2 M1951 PWB-F2 504x2 Figure 10 MD MECHANISM EXPLODED VIEW – 10 –...
Page 100 MD-ZV30H 306-2 306-1 306-3 703x2 M701 M702 305x2 SW702 PWB-C Figure 11 CD MECHANISM EXPLODED VIEW – 11 –...
Page 101 MD-ZV30H CD Mechanism 805x4 803x2 804x3 104 105 801x2 111x2 110x2 108x3 108x3 SWB101 PWB-J ~104 108x3 MOB1 123x4 PWB-H MOB2 80mm 806x2 Figure 12 CD CHANGER MECHANISM EXPLODED VIEW – 12 –...
Page 102 MD-ZV30H 215-2 [UK Only] 616x2 215-1 PWB-G 601x2 616x2 601x2 601x2 CD Changer Block 231x2 227x2 614x4 Silicon Grease IC551 613x2 251x2 601x2 611x2 601x3 PWB-C IC501 601x3 611x2 619x2 MD Mechanism Unit T601 PWB-A1 609x2 611x2 601x2 610x2 PWB-A2...
Page 103 MD-ZV30H - MEMO - – 14 –...
Page 104: Packing Of The Set (For Uk Only)
13. Pad, Packing Add., Left/Right SPAKZ0232AWZZ 14. Packing Spacer SPAKZ0263AWZZ 15. Caution Bill TCAUH0034AWZZ 16. Recording Mini Disc UDSKM0001AFZZ Batteries (Left) (Right) A9705-4758NS•HA•M Printed in Germany Writer and Editor: Quality & Reliability Control Center of Audio-Visual Systems Group, Sharp Corp. SG. SK...

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