Sharp MD-MS702MK, Service Manual

Page 1: ...ON MANUAL 4 QUICK GUIDE 6 DISASSEMBLY 8 REMOVING AND REINSTALLING THE MAIN PARTS 9 EEPROM DATA LIST 10 DIGITAL EQ SETTING 11 BLOCK DIAGRAM 13 NOTES ON SCHEMATIC DIAGRAM 15 SCHEMATIC DIAGRAM 14 VOLTAGE 17 WIRING SIDE OF P W BOARD 18 NOTES ON SCHEMATIC DIAGRAM 23 PARTS GUIDE EXPLODED VIEW PACKING METHOD FOR USA ONLY In the interests of user safety the set should be restored to its original condition...

Page 2: ...emi conductor laser pick up Audio channels Stereo 2 channels monaural long play mode 1 channel Frequency response 20 20 000 Hz 3 dB Rotation speed Approx 400 900 rpm Error correction ACIRC Advanced Cross Interleave Reed Solomon Code Coding ATRAC Adaptive TRansformed Acoustic Coding 24 bit computed type Recording method Magnetic modulation overwrite method Sampling frequency 44 1 kHz 32 kHz and 48 ...

Page 3: ...ator 11 Disc Mode Indicator 12 Disc Name Indicator 13 Track Name Indicator 14 Remaining Recording Time Indicator 15 Total Track Number Display 16 Record Track Mark Button 17 Volume Name Select Buttons 18 Display Lowercase Characters Button 19 Character Button 20 Stop Power Off Charge Button OFF 21 Play Pause Button 22 Fast Reverse Fast Forward Recording Level Control Cursor Buttons 23 Enter Fast P...

Page 4: ...icator dur ing operation How to read the battery indicator When the battery is completely dis charged the whole battery indicator will flash Recharge the battery or replace the alkaline batteries with new ones When the battery has completely run out BATT EMPTY main unit and Lo BATT remote control unit will appear The power will be disconnected auto matically Notes When the AC adaptor included with...

Page 5: ... impossible Is the MiniDisc protected against accidental erasure Is the unit connected properly to the other equipment Is the AC adaptor unplugged or did a power failure occur while recording or editing Is the unit in the safety mode Even if the maximum recording time of a MiniDisc has not been reached DISC FULL or TOC FULL may be displayed When the number of tracks used reaches the limit regardle...

Page 6: ...ding cannot be performed correctly due to vibration or shock in the unit Re record or replace it with another recordable disc Can t WRITE Editing is impossible Check the number of tracks DEFECT The disc is scratched If the sound you hear is not correct try recording again Replace the disc with another recordable disc Din UNLOCK Poor connection of the digital cable Connect the digital cable securel...

Page 7: ...ción sincronizada 1 Connect the external equipment Conecte el equipo externo 2 Insert a recordable MiniDisc Inserte un minidisco grabable 3 Press the REC button Pulse el botón REC 4 While playing sound from the external equipment con nected to this unit press the or button to adjust the recording level Mientras se reproduce el sonido del equipo externo conectado a este aparato pulse el botón o par...

Page 8: ...ed to the MD mecha nism the screw of the part to be fitted to the MD mechanism chassis it may contact the optical pickup resulting in malfunction 4 Whenrepairing paydueattentiontoelectrostaticcharges of IC REMOVAL PROCEDURE STEP FIGURE Bottom Cabinet Top Cabinet Center Cabinet Pull A1 x1 Ø1 4x2mm A1 x1 Ø1 4x2mm A1 x2 Ø1 4x2mm A1 x2 Ø1 4x2mm B1 x1 Ø1 4x2mm B1 x1 Ø1 4x2mm B1 x2 Ø1 4x2mm Figure 8 1 F...

Page 9: ...move the screws D1 x 2 pcs 2 Remove the soldering joint D2 x2 pcs Note Mount carefully so as not to damage the magnetic head D1 x2 Ø1 4x1 8mm Pickup Unit Magnetic Head Solder joint D2 x2 Figure 9 4 How to remove the lift motor See Fig 9 2 1 Remove the solder joint B1 x 2 of lift motor lead wire 2 Remove the stop washer B2 x 1 pc and remove the drive gear B3 x 1 pc 3 Remove the screw B4 x 1pc and r...

Page 10: ... I N 1 _ D 4 H I N 2 _ 6 7 H C T R _ 6 D H C T 2 _ 9 4 H C T 3 _ 3 3 H C T 4 _ 6 4 H C T 5 _ 7 4 H C T 6 _ 0 8 H C T 7 _ 4 2 H S P M _ 0 0 H M S L _ 0 0 H R S L _ 0 0 H BASS setting Item display Set values B S 1 _ 0 2 H B S 2 _ A 4 H B S 3 _ C 4 H Item display Set values F G _ _ 6 3 H F F 1 _ 7 0 H F F 2 _ F 0 H F Z H _ E D H F L n _ 0 9 H D J G _ 1 4 H F R V _ A A H F P f _ 8 8 H F L V _ 1 9 H W ...

Page 11: ...cific setting display state the setting change digit changes when the P MODE key is pressed 1st digit initial value 2nd digit P MODE P MODE In the specific state the setting changes in the range of 0h to Fh when the VOL UP DOWN key is pressed Control setting menu Play start SD number EEPROM version setting REC superposition EL existence nonexistence move start minimum number high speed jump over r...

Page 12: ...ton is pressed in specific menu the TEST MODE STOP state is set In specific state pressing the DISP key causes change to focus setting menu In the specific setting display state the setting change digit changes when the P MODE key is pressed 1st digit initial value 2nd digit P MODE P MODE In the specific state the setting changes in the range of 0h to Fh when the VOL UP DOWN key is pressed To moni...

Page 13: ...AD PHONES 4 5V REGULATOR ON OFF REMOTE CONTROL CONSTANT CURRENT DRIVE 3V DC DC CONVERTER S8327B30 BATTERY VOLTAGE REGULATOR CONSTANT CURRENT DRIVE RECHARGEABLE BATTERY OPIC POWER SELECT CHARGE DRIVE VCC IC202 7 8 VCC VEE VCC VEE 2 8 F IC901 2 5 IC651 LB1638M 2 5 7 9 2 2 2 5 2 5 2 5 2 5 2 5 74ACT02F IC351 IC101 IC601 MPC17A39 IC201 IC401 2 5 IC402 2 8 IC501 AK4514VF 2 5P IC771 TK71225M 2 8 IC841 IC...

Page 14: ...N TEMON SBCK SBO SBSY SFSY FOK SENSE COUT MCCK DINTX RSTX SYSD0 SYSD1 SYSD2 SYSD3 SYSD4 SYSD5 SYSD6 SYRDX SYWRX VBAT WBI TEST1 TEST0 FODRR FODRF TEST2 X176KO X176KO TRDRF TRDRR SLDRF SLDRR SPDRF SPDRR TCG AGND AIN FIN EIN BIN DGND VDD1 VDD1 DGND EFMI AVCC DGND VDD1 RAD0 RAD1 RAWEX RARASX RAA9 DGND VDD2 RAD3 RAD2 RACASX RAOEX RAA8 RAA7 RAA6 RAA5 RAA4 RAA0 RAA1 RAA2 RAA3 TCRS EFMO RMDAT OPICGA RFLAT...

Page 15: ...O1 I O2 WE RAS A9 A0 A1 A2 A3 VCC A4 A5 A6 A7 A8 OE CAS I O3 I O4 GND EAIN DB EAIN VREF GND EAOUT RMDAT OPICGA RFLAT RACLK RADAT PBLAT RCLAT PBOPON PLVDRY PLVDCI PLVINN HPLAY HREC RCPCNT PCNT1 RCPCNT DSPDAT DSPSCK DSPSTB PHOLD PCNT1 PCNT2 HPLAY HREC RPLAY PCNT2 PHOLD PSLDCI PSLINN PSLDRY PLVDCI PLVINN PLVDRY PDCNT DISCPR INNSW DISCIN ADDATA DFCK BCLK LRCK DIN ADPON DAPON EMPH1 OPTCNT XRT PSLDRY PS...

Page 16: ...1 0 1 R481 36K C875 0 22 R877 100K R876 100K C880 0 01 C879 1 IC874 TC7S00FU CHARGE DRIVER R882 100K R881 100K R879 100K R880 100K R809 100K D877 1SS360 C886 10 10 L886 0 47µH IC804 RN4904 IC842 NDS335N IC822 NDS335N C881 1 D875 1SS378 IC875 TK71325M R872 100K Q872 DTC144 EE Q873 2SJ305 IC873 S80827LN Q401 2SA17457 R400 3 9K R458 56K R457 18K R456 8 2K R455 5 6K R454 56K R453 18K R452 8 2K R451 5 ...

Page 17: ...PIN NO VOLTAGE 51 64 63 62 61 60 59 58 57 56 55 54 53 52 68 67 66 65 69 80 79 78 77 76 75 74 73 72 71 70 90 89 88 87 86 85 84 83 82 81 100 99 98 97 96 95 94 93 92 91 9 8 7 6 5 4 3 2 1 20 19 18 17 16 15 14 13 12 11 10 PIN NO VOLTAGE IC202 5 4 3 2 1 PIN NO VOLTAGE IC404 2 5V 2 5V 0V 0V 4 3 2 1 PIN NO VOLTAGE IC431 1 0V 1 2V 1 1V 0V 1 1V 1 2V 1 3V 2 5V 5 4 3 8 7 6 2 1 PIN NO VOLTAGE IC441 2 5V 0V 1 2...

Page 18: ... R203 D431 1 1 1 1 3 4 5 2 3 4 4 4 5 5 6 8 C843 IC431 C844 R844 L651 C651 R805 D822 R831 C829 C823 R824 C824 R806 C807 R811 C822 R823 R829 R821 R826 C830 C825 R832 R827 R810 R814 R818 D801 R815 IC800 R801 R802 C803 D802 C808 R808 R807 Q803 Q802 IC804 R809 1 1 1 6 1 6 7 12 7 12 1 3 4 6 4 4 5 1 3 4 6 5 8 8 R804 R803 C874 C804 C821 C805 L801 C806 Q352 D351 C351 Q351 Q353 Q354 C354 D352 C353 C609 C610...

Page 19: ...81 R873 IC876 C878 R875 R879 IC874 C881 C879 D875 R880 R882 R819 IC805 1 7 R874 Q801 1 1 3 3 1 1 3 3 6 4 6 5 4 4 4 L888 L887 C802 TP114 TP116 TP101 TP110 TP103 TP115 TP102 TP105 TP111 TP120 TP201 TP206 TP122 TP108 TP109 TP121 TP106 TP117 TP119 TP409 TP411 TP410 TP403 TP211 TP761 TP763 TP762 TP767 TP770 TP772 TP775 TP764 TP769 TP774 TP779 TP408 TP780 TP777 TP785 TP765 TP773 TP776 TP778 TP781 TP793 ...

Page 20: ...3 C734 L710 R729 C773 C774 L771 C771 C772 R711 1 12 13 15 20 24 5 10 R712 R719 R720 C505 C506 C701 L500 C759 C760 C758 R756 C507 C509 R501 R717 C702 R702 R715 R716 R713 R754 R500 C713 R502 C491 L491 C714 C711 C767 R753 D494 R751 C755 R492 D492 C768 L457 D491 L458 D493 C751 R766 R762 C761 C762 1 1 5 10 5 10 12 12 13 13 15 15 20 20 24 24 C756 C757 R752 J703 HEADPHONES J701 LINE J702 MIC IN IC701 IC7...

Page 21: ...3 TP570 TP574 TP567 TP564 TP561 TP563 TP566 TP569 TP572 TP577 TP565 TP568 TP579 TP582 TP585 TP588 TP584 TP590 TP586 TP714 TP704 TP593 TP712 TP713 TP711 TP703 TP705 TP709 TP708 TP707 TP702 TP701 TP726 TP592 TP591 TP500 TP576 TP580 TP581 TP578 TP575 TP571 TP728 TP727 TP723 TP724 TP722 TP729 TP725 TP721 JACK PWB A2 BOTTOM 1 1 33 AUDIO FLEXIBLE PWB 254 TO MAIN PWB P19 10 F ...

Page 22: ...PICKUP UNIT 15 M902 SLED MOTOR M901 SPINDLE MOTOR M903 LIFT MOTOR SW902 DISC PROTECT MECHA FLEXIBLE PWB UNIT 8 MAGNETIC HEAD FLEXIBLE PWB 23 MAGNETIC HEAD 32 KEY FLEXIBLE PWB UNIT 231 CN101 BK RD SW901 DISC IN TO MAIN PWB P19 10 D CN601 TO MAIN PWB P19 7 D CN451 TO MAIN PWB P19 12 D LCD 232 CN482 ...

Page 23: ...acitor without such a symbol is microfarad As to electro lytic capacitor the expression capacitance withstand volt age is used CH TH RH UJ Temperature compensation ML Mylar type The indicated voltage in each section is the one measured by Digital Multimeter between such a section and the chas sis with no signal given Parts marked with are important for maintaining the safety of the set Be sure to ...

Page 24: ...tor type VC MF Cylindrical type without lead wire VC MN Cylindrical type without lead wire VC TV Square type without lead wire VC TQ Square type without lead wire VC CY Square type without lead wire VC CZ Square type without lead wire VC J The 13th character represents capacity difference J 5 K 10 M 20 N 30 C 0 25 pF D 0 5 pF Z 80 20 If there are no indications for the electrolytic capacitors erro...

Page 25: ...21S30 D871 VHDRB491D 1 J AD Silicon RB491D D873 VHD1SS372 1 J AD Silicon 1SS372 D875 VHD1SS378 1 J AC Silicon 1SS378 D877 VHD1SS360 1 J AB Silicon 1SS360 PH901 8 4 VHPGP1S93K 1 J AF Photo Interrupter GP1S93K COILS L100 VPBNN100M0000 J AC 10 µH L171 RCILC0333AFZZ J AC 10 µH Choke L201 VPBNNR47M0000 J AC 0 47 µH L202 VPBNN100M0000 J AC 10 µH L204 RCILC0353AFZZ J AB Tip Solid Induction 100mA L452 454...

Page 26: ...3K J AA 0 01 µF 25V C903 RC KZ1216AFZZ J AD 3 3 µF 10V C905 907 VCKYCY1HB222K J AA 0 0022 µF 50V C908 RC KZ1191AFZZ J AC 0 47 µF 10V C909 910 VCKYCY1CB473K J AA 0 047 µF 16V C911 VCKYCY1CB104K J AB 0 1 µF 16V C951 952 VCSAFE0GJ476M J AE 47 µF 4 0V Electrolytic Tantalume RESISTORS VRS CY1JB000J J AA 0 ohm Jumper 0 8 1 55mm Green VRS TV2AB000J J AA 0 ohm Jumper 1 25 2mm Green R101 104 VRS CY1JB223J ...

Page 27: ...ate 13 NGERH0596AFZZ J AD Gear Drive 15 RCTRH8175AF10 J BM Optical Pickup Unit Ass y 16 MSPRP0880AFFJ J AC Spring Drive Grip 18 NSFTM0292AFFW J AC Shaft Guide 20 MSPRT1604AFFJ J AB Spring Eject Lever 23 QPWBH0307AFZZ J AF Magnetic Head Flexible PWB 25 MLEVF2599AFM1 J AE Lift Lever Ass y 26 NGERH0595AFZZ J AC Gear Lift Drive 28 MLEVF2600AFFW J AD Lever Lift 29 MSPRD1353AFFJ J AB Spring Lift Lever 3...

Page 28: ...king Add Unit SPAKC6622AFZZ J Packing Case SPAKZ0479AFZZ J AC Sheet SPAKZ0489AFZZ J Pad AC Adaptor SSAKH0314AFZZ J AD Polyethylene Bag Unit ACCESSORIES QCNWG0382AFZZ J AK Connecting Cord RCA Type QCNWG0422AFZZ J Optical Cable RADPA3489AFZZ J AV AC Adapter RPHOH0185AFZZ J Headphones RRMCW0024AFZZ J BB Remote Control TCAUH0341AFZZ J AD Service Card TINSZ1372AFZZ J AF Operation Manual TINSZ1373AFZZ J...

Page 29: ... 1 2 3 4 5 6 Figure 5 MD MECHANISM EXPLODED VIEW 5 1 2 7 515 3 6 5 20 4 23 30 509 8 8 1 8 3 SW902 506 501 506 11 13 504 25 26 29 514 15 18 16 505 507 510 512 513 513 M903 M902 M901 28 503x2 502x3 8 2 SW901 8 4 PH901 32 511x2 508 ...

Page 30: ...01 602 208 211 205 246 213 604 603 215 210 222 251 601 601 605x2 201 217 217 214 249 250 248 605x2 244 PWB A2 PWB A1 207 206 245 254 202 202 4 202 2 202 1 202 3 227 238 602 601 237 226 232 228x2 239 237 236 233 234 235 240 221 1 241x3 221 3 221 5 242 221 4 221 2 221 231 229 606x2 606 606 606x2 606x2 606 606 253 256 ...

Page 31: ...Card Operation Manual Quick Guide Spanish Pad AC Adaptor SPAKZ0489AFZZ AC Adaptor Polyethylene Bag Unit SSAKH0314AFZZ Carring Case Optical Cable Stereo Headphones Unit Connecting Cord RCA Type MD MS702MK Not Replacement Item PACKING METHOD FOR USA ONLY UNIT HOLD OFF Remote HOLD CANCEL Control SETTING POSITION OF SWITCHES AND KNOBS 7 ...

Page 32: ...trieval system or transmitted in any from or by any means electronic mechanical photocopying recording or otherwise without prior written permission of the publisher A9807 725NS HA J SC SL SHARP CORPORATION Communication Systems Group Quality Reliability Control Center Higashihiroshima Hiroshima 739 0192 Japan Printed in Japan ...