JVC KD-S747 Service Manual
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JVC KD-S747 Service Manual

JVC KD-S747 Service Manual

Cd receiver
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SERVICE MANUAL
03
2003
49822
1
Important Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
2
Disassembly method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
3
Adjustment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-23
4
Description of major ICs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-27
CD RECEIVER
KD-S747
COMPACT
DIGITAL AUDIO
TABLE OF CONTENTS
COPYRIGHT © 2003 VICTOR COMPANY OF JAPAN, LTD.
Area Suffix
EE --------- Russian Fedeation
KD-S747
No.49822
2003/03

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  • Page 1 KD-S747 SERVICE MANUAL CD RECEIVER 49822 2003 KD-S747 COMPACT Area Suffix DIGITAL AUDIO EE --------- Russian Fedeation TABLE OF CONTENTS Important Safety Precautions ............1-2 Disassembly method .

  • Page 2: Important Safety Precautions

    KD-S747 SECTION 1 Important Safety Precautions 1.1 Safety Precautions Burrs formed during molding may be left over on some parts of the chassis. Therefore, pay attention to such burrs in the case of preforming repair of this system. Please use enough caution not to see the beam directly or touch it in case of an adjustment or operation check.
  • Page 3 KD-S747 1.2 Preventing static electricity Electrostatic discharge (ESD), which occurs when static electricity stored in the body, fabric, etc. is discharged, can destroy the laser diode in the traverse unit (optical pickup). Take care to prevent this when performing repairs.

  • Page 4: Disassembly Method

    KD-S747 SECTION 2 Disassembly method 2.1 Main body 2.1.1 Removing the front panel assembly Front panel assembly (See Fig.1) (1) Push the detach button in the lower right part of the front panel assembly and remove the front panel assembly in the direction of the arrow.
  • Page 5 KD-S747 2.1.3 Removing the heat sink (See Fig.4) (1) Remove the two screws B and two screws C on the left side of the main body. Heat sink Fig.4 2.1.4 Removing the bottom cover (See Figs.5 and 6) • Prior to performing the following procedure, remove the front Joint c panel assembly, front chassis assembly and heat sink.
  • Page 6 KD-S747 2.1.5 Removing the rear bracket (See Fig.7) Rear bracket • Prior to performing the following procedure, remove the front panel assembly, front chassis assembly, heat sink and bottom cover. (1) Remove the three screws D, screw E and two screws F on the back of the body.
  • Page 7 KD-S747 2.1.8 Removing the front board (See Figs.10 to 12) • Prior to performing the following procedure, remove the front panel assembly. (1) Remove the four screws J on the back side of the front panel assembly. (2) Release the twelve joints f .
  • Page 8 KD-S747 2.2 CD Mechanism Assembly 2.2.1 Removing the top cover (See Figs.1 and 2) (1) Remove the two screws A on the both side of the body. (2) Lift the front side of the top cover and move the top cover backward to release the two joints a.
  • Page 9 KD-S747 2.2.2 Removing the connector board Wires (See Figs.3 to 5) CAUTION: Before disconnecting the flexible wire from the pickup, solder the short-circuit point on the pickup. No observance of this in- struction may cause damage of the pickup. (1) Remove the screw B fixing the connector board.
  • Page 10 KD-S747 2.2.3 Removing the DET switch (See Figs.6 and 7) (1) Extend the two tabs c of the feed sw. holder and pull out the switch. (2) Unsolder the DET switch wire if necessary. DET switch Connector board Pickup Fig.6...
  • Page 11 KD-S747 2.2.4 Removing the chassis unit (See Figs.8 and 9) • Prior to performing the following procedure, remove the top Chassis unit cover and connector board. Suspension spring (L) Suspension spring (R) (1) Remove the two suspension springs (L) and (R) attaching the chassis unit to the frame.
  • Page 12 KD-S747 2.2.5 Removing the clamper assembly (See Figs.10 and 11) • Prior to performing the following procedure, remove the top cover. (1) Remove the clamper arm spring. Clamper arm spring (2) Move the clamper assembly in the direction of the arrow to release the two joints d.
  • Page 13 KD-S747 2.2.6 Removing the loading / feed motor assembly (See Figs.12 and 13) • Prior to performing the following procedure, remove the top cover, connector board and chassis unit. (1) Remove the screw C and move the loading / feed motor assembly in the direction of the arrow to remove it from the chassis rivet assembly.
  • Page 14 KD-S747 2.2.7 Removing the pickup unit Pickup unit (See Figs.14 to 18) • Prior to performing the following procedure, remove the top cover, connector board and chassis unit. (1) Remove the screw D and pull out the pu. shaft holder from the pu.
  • Page 15 KD-S747 2.2.9 Removing the trigger arm Joint k (See Figs.19 and 20) • Prior to performing the following procedure, remove the top cover, connector board and clamper unit. (1) Turn the trigger arm in the direction of the arrow to release Trigger arm the joint k and pull out upward.
  • Page 16 KD-S747 2.2.11 Removing the mode sw. / select lock arm Link plate Joint t (See Figs.22 and 23) Mode sw. • Prior to performing the following procedure, remove the top plate assembly. Select lock arm (1) Bring up the mode sw. to release from the link plate (joint t) and turn in the direction of the arrow to release the joint u.
  • Page 17 KD-S747 2.2.12 Reassembling the mode sw. / select lock arm Select lock arm spring (See Figs.24 to 26) REFERENCE: Hook w Reverse the above removing procedure. Joint v (1) Reattach the select lock arm spring to the top plate and set...
  • Page 18 KD-S747 2.2.13 Removing the select arm R / link plate Joint c' Link plate Joint r (See Figs.27 and 28) Select arm R Joint b' • Prior to performing the following procedure, remove the top plate assembly. (1) Bring up the select arm R to release from the link plate...
  • Page 19 KD-S747 2.2.15 Removing the loading roller assembly (See Figs.31 to 33) Loading roller assembly • Prior to performing the following procedure, remove the Roller guide clamper assembly and top plate assembly. spring (1) Push inward the loading roller assembly on the gear side and detach it upward from the slot of the joint g' of the lock arm rivet assembly.
  • Page 20 KD-S747 2.2.16 Removing the loading gear 5, 6 and 7 (See Figs.35 and 36) Loading gear bracket • Prior to performing the following procedure, remove the top cover, chassis unit, pickup unit and top plate assembly. Loading gear 6 (1) Remove the screw K attaching the loading gear bracket.

  • Page 21: Pull Out The Loading Gear

    KD-S747 2.2.17 Removing the gears Joint p' (See Figs.37 to 40) • Prior to performing the following procedure, remove the top Change plate cover, chassis unit, top plate assembly and pickup unit. rivet assembly • Pull out the loading gear 3. (See Fig.35.) (1) Pull out the feed gear.
  • Page 22 KD-S747 2.2.18 Removing the turn table / spindle motor Turn table (See Figs.41 and 42) • Prior to performing the following procedure, remove the top cover, connector board, chassis unit and clamper assembly. (1) Remove the two screws L attaching the spindle motor as- sembly through the slot of the turn table on top of the body.

  • Page 23: Adjustment

    FM1/FM2 87.5MHz ~ 108.0MHz 6. Digital tester 65.0MHz ~ 74.0MHz 7. Tracking offset meter MW 522kHz ~ 1620kHz 8. Test Disc JVC :CTS-1000 LW 144kHz ~ 279kHz 9. Extension cable for check EXTSH002-22P 1 Dummy load Exclusive dummy load should be used for AM,and FM. For FM dummy load,there is a loss of 6dB between SSG output and antenna input.The loss of 6dB need not be considered...
  • Page 24 KD-S747 3.2 Troubleshooting 3.2.1 Feed section Is the voltage output at Is the wiring for IC521 Is 5V present at IC581 Check CD 9V IC521 pin u 5V or 0V? (90) (100) correct? pin 6? and 5V. Check the vicinity of IC521.
  • Page 25 KD-S747 3.2.5 Signal processing section Is the sound output from No sound from either Compare the L-ch and both channels (L, R)? channel. R-ch to locate the defective point. Normal Is 9V present at IC101 pin Check the vicinity of the...
  • Page 26 KD-S747 3.3 Maintenance of laser pickup 3.4 Replacement of laser pickup (1) Cleaning the pick up lens Before you replace the pick up, please try to clean the lens Turn off the power switch and,disconnect the with a alcohol soaked cotton swab.

  • Page 27: Description Of Major Ics

    KD-S747 SECTION 4 Description of major ICs 4.1 HA13164A (IC901) : Regulator • Terminal layout 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 • Block diagram 100u 0.1u BATT.DET OUT ANT OUT Surge Protector 0.1u...
  • Page 28 KD-S747 4.2 LA4743K (IC301) : Power amp. • Block diagram 2200 F 0.022 F Vcc 1/2 Vcc 3/4 IN 1 OUT 1+ 0.22 F OUT 1- PWR GND1 Protective circuit OUT 2+ IN 2 OUT 2- 0.22 F PWR GND2...
  • Page 29 KD-S747 • Pin layout • Pin function Pin No. Symbol Function Pin No. Symbol Function Header of IC FLIN Front Lch input Power GND RLIN Rear Lch input Outpur(-) for front Rch ONTIME Power on time control STDBY Stand by input...
  • Page 30 KD-S747 4.3 LA6579H-X (IC561) : 4-Channel bridge driver • Pin layout & Block diagram VIN1-A VIN1 VIN1_SW [H]: OP-AMP_A [L]: OP-AMP_B VIN1+A VIN1-B VCCP1 VIN1+B Signal system S-GND power supply VIN1-SW All outputs ON/OFF H : ON VO2+ MUTE MUTE...
  • Page 31 KD-S747 • Pin function Pin No. Symbol Function VIN1-A CH1 input AMP_inverted input VIN1+A CH1 input AMP_non-inverted input VCCP1 CH1 and CH2 power stage power supply VO1+ Output pin(+)for channel 1 VO1- CH1 output pin (-) for channel 1 VO2+...
  • Page 32 KD-S747 4.4 LC75823W (IC601) : LCD driver • Pin Layout 64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 •...
  • Page 33 KD-S747 4.5 NJM4565M-WE (IC571) : CD L.P.F. A OUTPUT B OUTPUT A INPUT A INPUT B INPUT B INPUT 4.6 IC-PST600M/G/-W (IC702) : System reset Vout (No.49822)1-33...
  • Page 34 KD-S747 4.7 TA2157FN-X (IC501) : RF amp • Terminal layout • Block diagram PEAK 50 A BOTTOM PEAK 1.75k 240k 15pF x0.5 240k 15pF x0.5 180k 40pF RFGC (APC SW) (TE BAL) (AGC Gian) (TE BAL) VCTRLPIN Normal mode APC ON...
  • Page 35 KD-S747 • Pin function Pin No. Symbol Function 3.3V power supply pin Main-beam amp input pin Main-beam amp input pin Sub-beam amp input pin Sub-beam amp input pin Monitor photo diode amp input pin Laser diode amp output pin APC circuit ON/OFF control signal, laser diode (LDO) control signal input or bottom/peak detection frequency change pin.
  • Page 36 KD-S747 4.8 TC94A14FA (IC521) : DSP & DAC • Terminal layout & block daiagram Clock generator 1-bit Servo control Digital equalizer Address automatic circuit adjustment circuit Data CLV servo slicer 16 k Synchronous guarantee decoder Audio out Digital circuit output...
  • Page 37 KD-S747 Symbol I/O Descroption TMAX O TMAX detection result output pin. TMAX Detection Result TMAX Output Longer than fixed period "PV " Within fixed period "HiZ" Shorter than fixed period "AV " LPFN I Inverted input pin for PLL LPF amp.
  • Page 38 KD-S747 4.9 TB2118F-X (IC31) : PLL • Terminal Layout • Block diagram Constant power supply voltage Buff. ON/OFF AM CP. Phase OSC circuit Reference Counter Comparator switch FM VCO 4-bit Prescaler Swallow counter 12-bit AMVCO Programmable counter 20-bit BINARY COUNTER...
  • Page 39 KD-S747 4.10 TEA6320T-X (IC161) : E.volume • Pin layout OUTRR OUTLR OUTRF OUTLF Vref MUTE CD-CH TAPE TUNER • Block diagram VOLUME 2 MUTE 0 to 55 dB FUNCTION BALANCE ZERO CROSS FENDER REAR POWER DETECTOR SUPPLY VOLUME 1 BASS...
  • Page 40 KD-S747 4.11 UPD784215AGC224 (IC701) : CPU • Pin Layout • Pin function Pin No. Symbol function no use output L CD mecha SW2 CD mecha Position Setting SW loading motor control output MOTOR SEL Loading/feed motor selecting output no use...
  • Page 41 KD-S747 Pin No. Symbol function E2PROM-CLK I2C clock output 48~50 no use output L no use output L SD/ST station detector or streo indicator input ; H means a station is there. L means the program is stereo. no use...
  • Page 42 KD-S747 VICTOR COMPANY OF JAPAN, LIMITED AV & MULTIMEDIA COMPANY MOBILE ENTERTAINMENT CATEGORY 10-1,1chome,Ohwatari-machi,Maebashi-city,371-8543,Japan (No.49822) Printed in Japan 200303WPC...

  • Page 43: Schematic Diagrams

    KD-S747 SCHEMATIC DIAGRAMS CD RECEIVER KD-S747 CD-ROM No.SML200303 Area suffix EE ------Russian Federation COMPACT DIGITAL AUDIO Contents Block diagram Standard schematic diagrams Printed circuit boards 2-5~7 No.49822SCH COPYRIGHT 2003 VICTOR COMPANY OF JAPAN, LTD. 2003/03...

  • Page 44: Safety Precaution

    KD-S747 Safety precaution Burrs formed during molding may be left over on some parts of the chassis. Therefore, pay attention to such burrs in the case of preforming repair of this system. Please use enough caution not to see the beam directly or touch it in case of an...

  • Page 45: Block Diagram

    KD-S747 Block diagram J301 L-CH FM/AM LINE OUT R-CH REAR L TUNER REAR R SW1,SW2,PSW FM/AM LM,MSW IC71 MONO DMO,FMO IC301 SPINDLE+ IC161 CDON IC521 TRO,FOO FEED+ SPINDLE- SD/ST OUTLF POWER DETECTER CD-RW E.VOL LOAD&FEED IC561 FEED- OUTRF FEED+ SEEK/STOP...
  • Page 46 KD-S747 KD-S747 Standard schematic diagrams Main amplifier section J301 QNN0519-001 Q321 Q331 IC301 Q341 2SD1781K/QR/-X 2SD1781K/QR/-X 2SD1781K/QR/-X LA4743K Q351 2SD1781K/QR/-X QNB0100-002 R163 C186 1/50 2.2K 1/50 1/50 R162 2SD601A/R/-X C185 2SD601A/R/-X 1/50 C163 0.18 C166 1/50 0.0056 C165 C167 0.033 4.7/50...
  • Page 47 KD-S747 CD servo control section R563 4.7K R564 R562 8.2K R566 R592 R595 FEED- 8.2K C592 FEED- R565 R594 C593 R591 CD.L 2SB1322/RS/-T C561 R593 Q561 47/6.3 120P FEED+ 4.7/25 FEED+ R567 6.8K C594 R756 R755 C584 R519 D561 SPINDLE-...
  • Page 48 KD-S747 KD-S747 LCD & Key control section QSW0863-002 JS690 IC602 RPM6938-SV4 R672 R671 R673 C612 4.7/6.3 C613 C614 0.015 0.015 LCD1 DETACH VMC0335-001 QLD0254-001 ILL10V CJ601 ACC5V REMOCON R675 DIMMER LCDCL LCDDA LCDCE KEY0 KEY1 KEY2 R605 R603 R604 R601 KEY0 1.8K...
  • Page 49 KD-S747 Printed circuit boards Main board Forward side C903 IC901 Q331 Q321 Q351 Q341 C913 L901 C906 J801 C915 C181 C184 C904 D901 CN901 C907 C784 C244 B801 C192 R901 B802 C332 D171 C911 B902 C304 C305 B901 R171 C910...
  • Page 50 KD-S747 Main board Reverse side D902 D903 R902 CN901 C313 J801 R903 IC901 C902 C903 C333 J301 Q902 C913 C904 R906 C891 C801 R173 C906 R172 C914 D901 C915 C184 R905 C907 C311 C308 D904 C317 C244 C302 C908 C181...
  • Page 51 KD-S747 Front board Forward side D622 D619 D618 S616 S613 S617 S601 JS690 LCD1 R601 D731 R646 R631 D609 S618 D610 R647 D732 R610 R608 S612 R602 S602 S610 D605 R604 D604 D603 D608 S607 D607 D606 R605 S605 S608...
  • Page 52 KD-S747 VICTOR COMPANY OF JAPAN, LIMITED AV & MULTIMEDIA COMPANY 10-1,1Chome,Ohwatari-machi,Maebashi-city,371-8543,Japan Printed in Japan (No.49822SCH) 2003/03...

  • Page 53: Parts List

    KD-S747 PARTS LIST [ KD-S747 ] * All printed circuit boards and its assemblies are not available as service parts. Area suffix EE --------- Russian Federation - Contents - Exploded view of general assembly and parts list (Block No.M1) --------------------- 3-2 CD mechanism assembly and parts list (Block No.MP) --------------------------------- 3-4...
  • Page 54 KD-S747 Exploded view of general assembly and parts list Block No.

  • Page 55: Exploded View Of General Assembly And Parts List

    KD-S747 Exploded view of general assembly and parts list Block No. [M][1][M][M]  Symbol No. Part No. Part Name Description Local GE10043-210A TOP CHASSIS GE40135-001A EARTH PLATE GE30938-003A HEAT SINK GE30393-002A BOTTOM COVER FSMA3004-203 INSULATOR QYSDST2604Z SCREW 2.6mm x 4mm(x3)
  • Page 56 KD-S747 CD mechanism assembly and parts list Block No. Grease TNG-87 GP-501MK TN-2001-1011 CFD-005Z GP-501A...
  • Page 57 KD-S747 CD mechanism Block No. [M][B][M][M]  Symbol No. Part No. Part Name Description Local 30320101T FRAME 30320102T TOP COVER 30320115T DANPER F 30320116T DANPER R 303205505T CHASSIS RIVET 303205503T CHANGE P. RVT A 303205301T CLAMPER ASS'Y 303205304T SPINDLE MOTOR A...

  • Page 58: Electrical Parts List

    KD-S747 Electrical parts list Main board Block No. [0][1][0][0]  Symbol No. Part No. Part Name Description Local  Symbol No. Part No. Part Name Description Local QEKJ1AM-227Z E CAPACITOR 220uF 10V M QEKJ1HM-105Z E CAPACITOR 1uF 50V M IC31...
  • Page 59 KD-S747  Symbol No. Part No. Part Name Description Local  Symbol No. Part No. Part Name Description Local C321 NCS31HJ-391X C CAPACITOR 390pF 50V J C706 NDC31HJ-220X C CAPACITOR 22pF 50V J C322 QFV61HJ-334Z MF CAPACITOR 0.33uF 50V J...
  • Page 60 KD-S747  Symbol No. Part No. Part Name Description Local  Symbol No. Part No. Part Name Description Local R178 NRSA63J-273X MG RESISTOR 27kΩ 1/16W J R598 NRSA63J-0R0X MG RESISTOR 0Ω 1/16W J R191 NRSA02J-100X MG RESISTOR 10Ω 1/10W J...

  • Page 61: Front Board

    KD-S747  Symbol No. Part No. Part Name Description Local  Symbol No. Part No. Part Name Description Local X521 QAX0413-001Z CRYSTAL R651 NRSA63J-102X MG RESISTOR 1kΩ 1/16W J X701 QAX0617-001Z CRYSTAL R653 NRSA63J-103X MG RESISTOR 10kΩ 1/16W J X702...

  • Page 62: Packing Materials And Accessories Parts List

    KD-S747 Packing materials and accessories parts list Block No. Block No. A1~A3 KIT:A5~A9 3-10...
  • Page 63 KD-S747 Packing Accessories Block No. [M][3][M][M] Block No. [M][5][M][M]  Symbol No. Part No. Part Name Description Local  Symbol No. Part No. Part Name Description Local FSPG4002-001 POLY BAG GET0138-001A INST BOOK ENG,RUS QPA00801205 POLY BAG 8cm x 12cm...

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