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JVC KD-SX745 Service Manual
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JVC KD-SX745 Service Manual

JVC KD-SX745 Service Manual

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3 7 63 1515 0
SERVICE MANUAL
03
2003
49811
KD-SX745,KD-SX695
TE
L 13942296513
1
Important Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
2
Disassembly method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
3
Adjustment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-23
4
Description of major ICs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-27
www
.
http://www.xiaoyu163.com
CD RECEIVER
ATT
R
SOURCE
VOL
COMPACT
DIGITAL AUDIO
Model
KD-SX745
KD-SX695
TABLE OF CONTENTS
x
ao
y
i
COPYRIGHT © 2003 VICTOR COMPANY OF JAPAN, LTD.
http://www.xiaoyu163.com
8
KD-SX745
SOUND
U
F
D
VOL
KD-SX695
Q Q
3
6 7
1 3
Panel
Remocon
LCD
Silver
RM-RK50
Blue Nega
Black
Rady
Nega
u163
.
2 9
9 4
2 8
1 5
0 5
8
2 9
9 4
Illumi
Red
Green
Area Suffix
U ------------- Other Areas
m
co
KD-SX745,KD-SX695
9 9
2 8
9 9
No.49811
2003/03

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  • Page 1 KD-SX745,KD-SX695 3 7 63 1515 0 SERVICE MANUAL CD RECEIVER 49811 2003 KD-SX745,KD-SX695 KD-SX745 SOUND SOURCE KD-SX695 L 13942296513 COMPACT DIGITAL AUDIO Model Panel Remocon Illumi KD-SX745 Silver RM-RK50 Blue Nega KD-SX695 Black Rady Nega Green Area Suffix U ------------- Other Areas TABLE OF CONTENTS Important Safety Precautions .
  • Page 2 KD-SX745,KD-SX695 3 7 63 1515 0 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.
  • Page 3 KD-SX745,KD-SX695 3 7 63 1515 0 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-SX745,KD-SX695 3 7 63 1515 0 SECTION 2 Disassembly method 2.1 Main body 2.1.1 Removing the front panel assembly (See Fig.1) Front panel assembly (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-SX745,KD-SX695 3 7 63 1515 0 2.1.3 Removing the heat sink (See Fig.5) (1) Remove the two screws B and two screws C on the left side of the main body. Heat sink Fig.5 2.1.4 Removing the bottom cover (See Figs.6 and 7) •...
  • Page 6 KD-SX745,KD-SX695 3 7 63 1515 0 2.1.5 Removing the rear bracket (See Fig.8) • Prior to performing the following procedure, remove the front panel assembly, front chassis assembly, heat sink and bottom Rear bracket cover. (1) Remove the three screws D, three screws E and three screws F on the back side of the main body.
  • Page 7 KD-SX745,KD-SX695 3 7 63 1515 0 2.1.8 Removing the front board (See Figs.11 to 13) • Prior to performing the following procedure, remove the front panel assembly. (1) Remove the four screws J on the back side of the front pan- el assembly.
  • Page 8 KD-SX745,KD-SX695 3 7 63 1515 0 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: No.49811)1

    KD-SX745,KD-SX695 3 7 63 1515 0 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.

  • Page 10: Http://Www.xiaoyu163.Com

    KD-SX745,KD-SX695 3 7 63 1515 0 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.
  • Page 11 KD-SX745,KD-SX695 3 7 63 1515 0 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-SX745,KD-SX695 3 7 63 1515 0 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-SX745,KD-SX695 3 7 63 1515 0 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 as- sembly in the direction of the arrow to remove it from the chassis rivet assembly.
  • Page 14 KD-SX745,KD-SX695 3 7 63 1515 0 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 Part e the pu.
  • Page 15 KD-SX745,KD-SX695 3 7 63 1515 0 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-SX745,KD-SX695 3 7 63 1515 0 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.
  • Page 17 KD-SX745,KD-SX695 3 7 63 1515 0 2.2.12 Reassembling the mode sw. / select lock arm Select lock arm spring (See Figs.24 to 26) Hook w REFERENCE: Reverse the above removing procedure. Joint v (1) Reattach the select lock arm spring to the top plate and set...
  • Page 18 KD-SX745,KD-SX695 3 7 63 1515 0 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.
  • Page 19 KD-SX745,KD-SX695 3 7 63 1515 0 2.2.15 Removing the loading roller assembly Loading roller assembly (See Figs.31 to 33) • Prior to performing the following procedure, remove the Roller guide spring clamper assembly and top plate assembly. (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-SX745,KD-SX695 3 7 63 1515 0 2.2.16 Removing the loading gear 5, 6 and 7 Loading gear bracket (See Figs.35 and 36) • Prior to performing the following procedure, remove the top Loading gear 6 cover, chassis unit, pickup unit and top plate assembly.
  • Page 21 KD-SX745,KD-SX695 3 7 63 1515 0 2.2.17 Removing the gears Joint p' (See Figs.37 to 40) • Prior to performing the following procedure, remove the top Change plate rivet assembly cover, chassis unit, top plate assembly and pickup unit.
  • Page 22 KD-SX745,KD-SX695 3 7 63 1515 0 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 6. Digital tester FM 87.5MHz ~ 108.0MHz 7. Tracking offset meter AM 531kHz ~ 1602 kHz 8. Test Disc JVC :CTS-1000 9. Extension cable for check Dummy load EXTSH002-22P x1 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.
  • Page 24 KD-SX745,KD-SX695 3 7 63 1515 0 3.2 Flow of functional operation unit TOC read Power ON When the pickup correctly moves Set Function CD When the laser diode correctly to the inner area of the disc emits $82 $81...
  • Page 25 KD-SX745,KD-SX695 3 7 63 1515 0 3.2.1 Feed section Is the voltage output at Is the wiring for IC561 Is 3.3V present at IC561 IC521 pin "40" 5V or 0V? pin 27? pin "20"? Check CD 8V Check the vicinity of and 5V.
  • Page 26 KD-SX745,KD-SX695 3 7 63 1515 0 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 power with a alcohol soaked cotton swab.

  • Page 27: Description Of Major Ics

    KD-SX745,KD-SX695 3 7 63 1515 0 SECTION 4 Description of major ICs 4.1 HA13164A (IC901) : Regulator • Pin layout 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 • Block diagram 100u 0.1u...
  • Page 28 KD-SX745,KD-SX695 3 7 63 1515 0 4.2 LA4743K (IC302) : 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...
  • Page 29 KD-SX745,KD-SX695 3 7 63 1515 0 • 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...
  • Page 30 KD-SX745,KD-SX695 3 7 63 1515 0 4.5 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...
  • Page 31 KD-SX745,KD-SX695 3 7 63 1515 0 • 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...
  • Page 32 KD-SX745,KD-SX695 3 7 63 1515 0 4.6 HD74HC126FP-X (IC801) : Buffer • Pin layout • Pin function Input Output Note: H:High level L:Low level X:Irrelevant Z:Off(High-impedance) State a 3-state input • Block diagram Output Input L 13942296513 Output Sample as Load Circuit 1...
  • Page 33 KD-SX745,KD-SX695 3 7 63 1515 0 4.7 PT6523LQ (IC601) : LCD driver • Pin layout • Block diagram COMMON SEGMENT DRIVER & LATCH DRIVER CLOCK GENERATOR SHIFT REGISTER ADDRESS DETECTOR L 13942296513 • Piin function Pin No. Pin Name...
  • Page 34 KD-SX745,KD-SX695 3 7 63 1515 0 4.8 TA2157FN-X(IC501) : RF amp • Pin layout • Block diagram PEAK 50 A BOTTOM L 13942296513 PEAK 1.75k 240k 15pF x0.5 240k 15pF x0.5 180k 40pF RFGC (APC SW) (TE BAL) (AGC Gian)
  • Page 35 KD-SX745,KD-SX695 3 7 63 1515 0 • 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...
  • Page 36 KD-SX745,KD-SX695 3 7 63 1515 0 4.9 TC94A14FA (IC521) : DSP & DAC • Pin layout & Block daiagram Clock generator 1-bit Servo control Digital equalizer Address automatic circuit adjustment circuit Data CLV servo slicer 16 k Synchronous guarantee...
  • Page 37 KD-SX745,KD-SX695 3 7 63 1515 0 Pin No Symbol Descroption EFM and PLCK phase difference signal output pin. TMAX TMAX detection result output pin. TMAX Detection Result TMAX Output Longer than fixed period "PV " Within fixed period "HiZ"...
  • Page 38 4.10 UPD178078GF-600 (IC701) : System CPU • Pin Layout • Pin function Pin No. Symbol Function No use JBUS-INT JVC bus communication line JBUS-SI JVC bus communication line JBUS-SO JVC bus communication line JBUS-SCK JVC bus communication line 6,7,8 No use...
  • Page 39 KD-SX745,KD-SX695 3 7 63 1515 0 Pin No. Symbol Function IF count input VDDPLL Power supply for PLL OSC-INPUT FM,AM osc input No use GNDPLL AMEO PLL error output for AM FMEO PLL error output for FM ICVPP Setting to write for flash...
  • Page 40 KD-SX745,KD-SX695 3 7 63 1515 0 4.11 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...
  • Page 41 KD-SX745,KD-SX695 3 7 63 1515 0 L 13942296513 u163 (No.49811)1-41 http://www.xiaoyu163.com...
  • Page 42 KD-SX745,KD-SX695 3 7 63 1515 0 L 13942296513 u163 VICTOR COMPANY OF JAPAN, LIMITED AV & MULTIMEDIA COMPANY 10-1,1chome,Ohwatari-machi,Maebashi-city,371-8543,Japan (No.49811) Printed in Japan 200303WPC http://www.xiaoyu163.com...

  • Page 43: Cd Receiver

    KD-SX745,KD-SX695 3 7 63 1515 0 SCHEMATIC DIAGRAMS CD RECEIVER KD-SX745,KD-SX695 CD-ROM No.SML200303 KD-SX745 SO UND SO URC E VO L VO L L 13942296513 KD-SX695 C OMP AC T DIGIT A L AUD IO Area Suffix Model Panel...

  • Page 44: Safety Precaution

    KD-SX745,KD-SX695 3 7 63 1515 0 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 adjustment or operation check.
  • Page 45 KD-SX745,KD-SX695 3 7 6 3 1 5 1 5 0 Block diagram TU.LCH FM/AM TU.RCH TUNER CJ321 SW1,SW2,PSW LINE OUT AMEO MONO LM,MSW FM/AM FMEO TRO,FOO IC302 SEEK/STP SPINDLE+ BUS0,BUS1 IC161 DMO,FMO IC521 FM.OSC OUTFL POWER SPINDLE- BUS2,BUS3 E.VOL...
  • Page 46 KD-SX745,/KD-SX695 KD-SX745,KD-SX695 3 7 6 3 1 5 1 5 0 Standard schematic diagrams Main amplifier section Q976 UN2111-X D976 NOT USED 1SS355-X R331 R332 Q977 MUTE UN2111-X R335 2.2K Q331 C331 QAU0281-001 2SD1781K/QR/-X 100P QNB0100-002 Q321 R325 2.2K...
  • Page 47 KD-SX745,KD-SX695 3 7 6 3 1 5 1 5 0 CD servo control section R564 8.2K R562 R572 R575 C572 4.7K R571 C573 CD.L R563 R574 R573 C561 120P 4.7/25 47/10 R566 FEED- FEED+ 8.2K( 1/10) Q561 FEED- FEED-...
  • Page 48 KD-SX745,/KD-SX695 KD-SX745,KD-SX695 3 7 6 3 1 5 1 5 0 LCD & Key control section QSW0793-001 JS690 IC602 RPM6938-SV4 R672 R671 R673 VMC0335-001 0.015 0.015 C612 CJ601 C614 C613 4.7/6.3 LCD1 ILL_10V ILL_10V ILL_10V ILL_10V ILL_10V ILL_10V ILL_10V...
  • Page 49 KD-SX745,KD-SX695 3 7 63 1515 0 Printed circuit boards Main board Forward side C901 IC901 CJ321 R351 Q351 Q341 Q331 L901 CJ322 CN901 Q321 B302 C303 D901 C316 C304 B303 R902 C315 C913 R331 R341 C903 R901 C906 R325...
  • Page 50 KD-SX745,KD-SX695 3 7 63 1515 0 Main board Reverse side C901 IC901 C333 L901 C903 CJ322 CN901 C913 C904 C902 C300 D901 C891 R901 D903 C906 R332 C341 C351 IC302 R342 R352 R891 C910 R892 D331 C915 C909 C905...
  • Page 51 KD-SX745,KD-SX695 3 7 63 1515 0 Front board Forward side D622 D618 D619 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...
  • Page 52 KD-SX745,KD-SX695 3 7 63 1515 0 L 13942296513 u163 VICTOR COMPANY OF JAPAN, LIMITED AV & MULTIMEDIA COMPANY 10-1,1Chome,Ohwatari-machi,Maebashi-city,371-8543,Japan Printed in Japan (No.49811SCH) 2003/03 http://www.xiaoyu163.com...

  • Page 53: Parts List

    KD-SX745,KD-SX695 3 7 63 1515 0 PARTS LIST [ KD-SX745 ] [ KD-SX695 ] * All printed circuit boards and its assemblies are not available as service parts. Area suffix U --------------------- Other Areas L 13942296513 - Contents - 3- 2 Exploded view of general assembly and parts list (Block No.M1)
  • Page 54 KD-SX745,KD-SX695 3 7 63 1515 0 Exploded view of general assembly and parts list Block No. L 13942296513 u163 http://www.xiaoyu163.com...
  • Page 55 2 CHASIS+HEAT SIN QYSDST2606Z SCREW 2 CHASSIS+MAIN PW QYSDST2604Z SCREW 3 CHASSIS+REAR BK QYSDST2612Z SCREW 1 HEAT SINK+IC BK GE10056-002A FRONT CHASSIS 1 KD-SX745 FRONT CHASSIS 1 KD-SX695 GE10056-001A QYSDST2004M SCREW GE30583-001A LOCK LEVER FSKW4005-003 TORSION SPRING 1 FOR LOCK LEVER FSKW3002-015 COMP.SPRING...
  • Page 56 Parts list (General assembly) Block No. M1MM Item Description Parts number Parts name Q'ty Area LV41843-001A LASER CAUTION QLD0254-002 LCD MODULE 1 KD-SX745 QLD0252-001 LCD MODULE 1 KD-SX695 LCD CONNECTOR QNZ0442-001 QMFZ047-150-T FUSE GE30382-017A REAR BRACKET QYSDST2606Z SCREW 1 REAR BKT+REG BK...
  • Page 57 KD-SX745,KD-SX695 3 7 63 1515 0 CD mechanism assembly and parts list Block No. Grease TNG-87 TN-2001-1011 GP-501MK CFD-005Z GP-501A L 13942296513 u163 http://www.xiaoyu163.com...
  • Page 58 KD-SX745,KD-SX695 3 7 63 1515 0 Parts list (CD mechanism) Block No. MBMM Item Parts number Parts name Q'ty Description Area 30320101T FRAME 30320102T TOP COVER 30320115T DANPER F 30320116T DANPER R 303205505T CHASSIS RIVET 303205503T CHANGE P. RVT A...
  • Page 59 KD-SX745,KD-SX695 3 7 63 1515 0 Parts list (CD mechanism) Block No. MBMM Item Description Parts number Parts name Q'ty Area 30321103T LOADING GEAR 3 30321104T LOADING GEAR 4 30321105T LOADING GEAR 5 30321106T LOADING GEAR 6 LOADING GEAR 7...
  • Page 60 KD-SX745,KD-SX695 3 7 63 1515 0 Electrical parts list (Main board) Block No. 01 Item Parts number Parts name Remarks Area Item Parts number Parts name Remarks Area QEKJ1CM-106Z E CAPACITOR 10MF 20% 16V C 315 NDC31HJ-101X C.CAPACITOR QEKJ1HM-224Z E CAPACITOR .22MF 20% 50V...
  • Page 61 KD-SX745,KD-SX695 3 7 63 1515 0 Electrical parts list (Main board) Block No. 01 Item Parts number Parts name Remarks Area Item Parts number Parts name Remarks Area C 567 NCB31EK-473X C CAPACITOR D 901 1N5401-F64 DIODE C 571...
  • Page 62 KD-SX745,KD-SX695 3 7 63 1515 0 Electrical parts list (Main board) Block No. 01 Item Parts number Parts name Remarks Area Item Parts number Parts name Remarks Area R 82 NRSA63J-102X MG RESISTOR R 533 NRSA63J-105X MG RESISTOR R 83...
  • Page 63 KD-SX745,KD-SX695 3 7 63 1515 0 Electrical parts list (Main board) Block No. 01 Item Parts number Parts name Remarks Area R 735 NRSA63J-103X MG RESISTOR R 746 NRSA63J-103X MG RESISTOR R 747 NRSA63J-103X MG RESISTOR R 748 NRSA63J-103X...
  • Page 64 KD-SX745,KD-SX695 3 7 63 1515 0 Electrical parts list (Front board) Block No. 02 Item Parts number Parts name Remarks Area Item Parts number Parts name Remarks Area C 601 NCB31HK-223X C CAPACITOR R 606 NRSA63J-821X MG RESISTOR C 602...
  • Page 65 KD-SX745,KD-SX695 Electrical parts list (Front board) 3 7 63 1515 0 Block No. 02 Item Remarks Parts number Parts name Area S 613 NSW0124-001X TACT SW S 614 NSW0124-001X TACT SW S 615 NSW0124-001X TACT SW S 616 NSW0124-001X...
  • Page 66 KD-SX745,KD-SX695 3 7 63 1515 0 Packing materials and accessories parts list Block No. Block No. A1~A4 L 13942296513 KIT:A5~A9 u163 3-14 http://www.xiaoyu163.com...
  • Page 67 1 FOR INST. BOOK POLY BAG QPA00801205 FSYH4036-068 SHEET 1 MIRAMA SHEET QPA01003003 POLY BAG QPC03004315P POLY BAG GE30727-001A CARTON 1 KD-SX745 GE30730-001A CARTON 1 KD-SX695 GE10047-001A EPS CUSHION Parts list (Accessories) Block No. M5MM Item Parts number Parts name Q'ty...

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Kd-sx695