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JVC KD-S680 Service Manual
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JVC KD-S680 Service Manual

Cd receiver
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Download this manual See also: Instruction Manual
QQ
3 7 63 1515 0
SERVICE MANUAL
TE
L 13942296513
Contents
Safety precaution
Preventing static electricity
Disassembly method
Adjustment method
www
.
http://www.xiaoyu163.com
CD RECEIVER
KD-S680
x
ao
u163
y
i
COPYRIGHT
2001 VICTOR COMPANY OF JAPAN, LTD.
http://www.xiaoyu163.com
2 9
8
Q Q
3
6 7
1 3
1 5
1-2
Flow of functional
1-3
operation unit TOC read
1-4
Maintenance of laser pickup
1-11
Description of major ICs
co
.
9 4
2 8
0 5
8
2 9
9 4
2 8
Area Suffix
J ------ Northern America
1-12
1-14
1-15
m
KD-S680
9 9
9 9
No.49665
Dec. 2001

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Summary of Contents for JVC KD-S680

  • Page 1 KD-S680 3 7 63 1515 0 SERVICE MANUAL CD RECEIVER KD-S680 L 13942296513 Area Suffix J ------ Northern America Contents Safety precaution Flow of functional Preventing static electricity operation unit TOC read 1-12 Disassembly method Maintenance of laser pickup...

  • Page 2: Safety Precaution

    KD-S680 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 3: Preventing Static Electricity

    KD-S680 3 7 63 1515 0 Preventing static electricity 1.Grounding to prevent damage by 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-S680 3 7 63 1515 0 Disassembly method <Main body> Removing the front panel assembly (See Fig.1) Press the eject button in the lower right part of the front panel. Remove the front panel assembly from the body. Front panel assembly Eject button Fig.1...

  • Page 5: Removing The Bottom Cover

    KD-S680 3 7 63 1515 0 Removing the heat sink (See Fig.4) Remove the three screws A on the left side of the body. Heat sink Fig.4 Joints b Removing the bottom cover (See Fig.5 and 6) Bottom cover...

  • Page 6: Removing The Mainboard

    KD-S680 3 7 63 1515 0 Removing the main board (See Fig.7 and 8) Prior to performing the following procedure, remove the front panel assembly, the front chassis assembly, the heat sink and the bottom cover. Remove the screw B, the four screws C and the...
  • Page 7 KD-S680 3 7 63 1515 0 Removing the control switch board (See Fig.10 to 12) Prior to performing the following procedure, remove the front panel assembly. Remove the four screws G attaching the rear cover on the back of the front panel assembly.

  • Page 8: Cd Mechanism Section

    KD-S680 3 7 63 1515 0 Damper bracket <CD mechanism section> CD mechanism assembly Removing the CD mechanism control board (See Fig.1 and 2) Unsolder the part a and b on the CD mechanism control board. Remove the stator fixing the CD mechanism control board and the damper bracket (To remove the stator smoothly, pick up the center part).
  • Page 9 KD-S680 3 7 63 1515 0 Damper bracket assembly CD mechanism Removing the CD mechanism assembly (See Fig.1, 6 to 9) Prior to performing the following procedure, remove the CD mechanism control board and the front bracket (loading motor).

  • Page 10: Removing The Pickup Unit

    KD-S680 3 7 63 1515 0 Removing the feed motor assembly FD screw Part i Feed motor assembly (See Fig.10) Prior to performing the following procedure, remove the CD mechanism control board, the front bracket Part j (loading motor) and the CD mechanism assembly.

  • Page 11: Adjustment Method

    6. Digital tester FM 87.5MHz ~ 107.9MHz 7. Tracking offset meter MW 530kHz ~ 1710 kHz 8. Test Disc JVC :CTS-1000 9. Extension cable for check EXTGS004-26P 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 12: Flow Of Functional Operation Until Toc Read

    KD-S680 3 7 63 1515 0 Flow of functional operation until TOC read Power ON • When the laser diode correctly Set Function to CD • When the pickup correctly moves emits to the inner area of the disc...

  • Page 13: Feed Section

    KD-S680 3 7 63 1515 0 Feed Section Check CD 9V Is the voltage output at Is the wiring for IC521 Is 5V present at IC581 and 5V. IC521 pin "53" 5V or 0V? (90) ~ (100) correct? pin "11"? Check the vicinity of IC521.

  • Page 14: Maintenance Of Laser Pickup

    KD-S680 3 7 63 1515 0 Maintenance of laser pickup (1) Cleaning the pick up lens Before you replace the pick up, please try to clean the lens with a alcohol soaked cotton swab. (2) Life of the laser diode When the life of the laser diode has expired, the following symptoms will appear.

  • Page 15: Description Of Major Ics

    KD-S680 3 7 63 1515 0 Description of major ICs HA13164 (IC901) : Regulator 1.Terminal layout 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 2.Block diagram 100u 0.1u BATT.DET OUT ANT OUT Surge Protector 0.1u...
  • Page 16 KD-S680 3 7 63 1515 0 BD3860K (IC161):E.Volume 1.Terminal layout 2.Blockdiagram GND FIL VCC SEL1 VIN1 LOUD1 HF1 LF1 DET1 VCA1 MIX1 BBOUT1 TIN1 TNF1 BNF1 BOUT1 POWER FADER SUPPLY MAIN INPUT OUTF1 CH1 FRONT TREBLE BASS VOLUME GAIN...
  • Page 17 KD-S680 3 7 63 1515 0 LA6574H-X (IC561) : Power AMP 1.Pin layout / Block diagram Thermal Shuydown VCC2 1 28 REV POWER 27 FWD V05- 2 26 S-GND V05+ 3 25 VCONT V04+ 4 V04- 5 24 VIN4...
  • Page 18 3 7 63 1515 0 UPD178078GF-559 (IC701) : System CPU 1.Pin layout 2.Pin function (1/2) Symbol FUNCTION No use BUSINT JVC bus communication line BUSSI JVC bus communication line BUSSO JVC bus communication line JBUS-SCK JVC bus communication line 6,7,8...
  • Page 19 KD-S680 3 7 63 1515 0 2.Pin function (2/2) UPD178078GF-559 Symbol FUNCTION GNDPLL AMEO PLL error output for AM FMEO PLL error output for FM IC(VPP) Setting to write for flash RESET System reset CD mech switch REMOCON Remocon input...
  • Page 20 KD-S680 3 7 63 1515 0 LA4743K(IC302):Power AMP 1.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 21 KD-S680 3 7 63 1515 0 2.Terminal layout 3.Pin function LA4743K Pin No. Symbol Function Header of IC Power GND OUTRR- Outpur(-) for front Rch STBY Stand by input Output (+) for front Rch OUTRR+ Power input VCC1/2 OUTRF-...
  • Page 22 KD-S680 3 7 63 1515 0 LC75823W (IC601) : LCD driver 1. Pin Layout & Symbol 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 2.
  • Page 23 KD-S680 3 7 63 1515 0 TA2147F-X (IC501) : RF amp 1. Pin layout & Block diagram 10 pF 30 k 40 k 1.3 V 180 k 40 pF 40 k 60 A 10 pF L 13942296513 2. Pin function...
  • Page 24 KD-S680 3 7 63 1515 0 TC9490FA (IC521) : DSP 1. Pin layout & Block diagram 32 TEZI Clock generator SBAD 1-bit Servo control RFRP RFZI ZDET RFCT Digital equalizer Address automatic circuit adjustment circuit BUS0 Data CLV servo...
  • Page 25 KD-S680 3 7 63 1515 0 2. Pin function (2/2) TC9490FA Symbol Function RFCT RFRP signal center level input pin. RFZI RFRP signal zero-cross input pin. RFRP RF ripple signal input pin. Focus error signal input pin. SBADTEI Sub-beam adder signal input pin.
  • Page 26 KD-S680 3 7 63 1515 0 NJM4565M-WE (IC571) : Ope. amp A OUTPUT A INPUT B OUTPUT A INPUT B INPUT B INPUT RPM6938-SV4(IC602) : Remote sensor 1.Block diagram L 13942296513 Comp Rout Detector conversion trimming circuit magnetic shield...
  • Page 27 KD-S680 3 7 63 1515 0 L 13942296513 u163 VICTOR COMPANY OF JAPAN, LIMITED MOBILE ELECTRONICS DIVISION PERSONAL & MOBILE NETWORK BUSINESS UNIT. 10-1,1Chome,Ohwatari-machi,Maebashi-city,371-8543,Japan 200112 (No.49665) http://www.xiaoyu163.com...
  • Page 28 KD-S680 3 7 6 3 1 5 1 5 0 Block diagram TU.LCH FM/AM TU.RCH TUNER SW1 SW4 REST FEED REST REST FM/AM AMEO LOADING FMOSC FMEO SPINDLE CJ302 IC161 IC561 IC571 FEED LINE OUT E.VOL LOADING SERVO LOADING...
  • Page 29 KD-S680 KD-S680 Standard schematic diagrams 3 7 6 3 1 5 1 5 0 Main amp section Q976 UN2111 D976 1SS133 R331 R332 Q977 UN2111 MUTE 2.2k Q331 C331 QAU0257-001 R335 2SD1048/6-7/-X 100P QNB0100-002 Q321 R325 2.2k C321 2SD1048/6-7/-X...
  • Page 30 KD-S680 3 7 6 3 1 5 1 5 0 CD servo control section R564 6.8k R563 5.6k R572 R575 C572 R574 R571 C573 CD.L R562 6.8k R573 C561 120p 4.7/25 R566 47/6.3 8.2k( 1/10W) Q561 CN501 2SB1322 C574...
  • Page 31 KD-S680 KD-S680 3 7 6 3 1 5 1 5 0 LCD & key control section JS690 IC602 RPM6938-SV4 QSW0793-001 R661 C681 0.022 R662 VCM0335-001 CJ601 LCD1 ILL_10V REMOCON ENC1 ENC2 BUS2 LCD.CL LCD.DA LCD.CE BUS1 KEY0 KEY1 KEY2...
  • Page 32 KD-S680 Printed circuit boards 3 7 63 1515 0 Main board(Forward side) IC901 C901 L901 Q331 Q341 Q351 CJ322 CN901 CJ321 C305 C914 C316 C308 Q321 C315 C304 C306 C913 C313 C906 C904 R902 R341 D901 C903 C320 R355...
  • Page 33 KD-S680 Main board(Reverse side) 3 7 63 1515 0 CN901 C901 C331 C321 C341 CJ322 IC901 L901 C902 D901 R812 C308 C913 C904 C906 R901 R972 C903 C320 C907 R891 D331 C915 C910 C909 C905 C191 R967 C192 C196...
  • Page 34 KD-S680 3 7 63 1515 0 < M E M O > L 13942296513 u163 http://www.xiaoyu163.com...

  • Page 35: Parts List

    KD-S680 3 7 63 1515 0 PARTS LIST [ KD-S680 ] * All printed circuit boards and its assemblies are not available as service parts. Area suffix J -------------- Northern America L 13942296513 - Contents - 3- 2 Exploded view of general assembly and parts list (Block No.M1) 3- 5 CD mechanism assembly and parts list (Block No.MB)

  • Page 36: Exploded View Of General Assembly And Parts List

    KD-S680 3 7 63 1515 0 Exploded view of general assembly and parts list Block No. L 13942296513 u163 http://www.xiaoyu163.com...
  • Page 37 KD-S680 3 7 63 1515 0 Parts list (General assembly) Block No. M1MM Item Description Parts number Parts name Q'ty Area ------------ CD MECHA (1325) FSJC1029-401 TOP CHASSIS FSMH3001-202 HEAT SINK FSKM3011-002 BOTTOM COVER FSMA3004-203 INSULATOR SCREW 3 CHASSIS+MECHA BKT...
  • Page 38 KD-S680 3 7 63 1515 0 Parts list (General assembly) Block No. M1MM Item Description Parts number Parts name Q'ty Area QYSDST2606Z SCREW 1 FOR ANT QYSDSF3006Z SCREW 1 FOR LINE OUT QYSDST2606Z SCREW 3 16P & REG BKT...

  • Page 39: Cd Mechanism Assembly And Parts List

    KD-S680 3 7 63 1515 0 CD mechanism assembly and parts list Block No. Grease G-31SA TN-CCD1001Z-138S G-31SA(Bottom side) RX-405 L 13942296513 u163 106 29 http://www.xiaoyu163.com...
  • Page 40 KD-S680 3 7 63 1515 0 Parts list (CD mechanism) Block No. MBMM Item Description Parts number Parts name Q'ty Area 30310101T FRAME 30310103T DANPER PIN 30310107T UPPER PLATE 30310108T SEL STOP PLATE 30310142T SEL ARM (L)L SEL ARM (R)L...
  • Page 41 KD-S680 3 7 63 1515 0 Parts list (CD mechanism) Block No. MBMM Item Description Parts number Parts name Q'ty Area 68150242T CONNECTOR 1 TKC-W26X-A1 30311105T SOPPORT PLATE 30311138T GR MT BLK(N) 30311109T LDG GEAR (2) 30311110T LDG GEAR (3)
  • Page 42 KD-S680 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 QERF1CM-106Z E CAPACITOR 10MF 20% 16V C 300 NCB31HK-223X C CAPACITOR...
  • Page 43 KD-S680 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 553 NDC31HJ-100X C CAPACITOR D 702 UDZS6.2B-X SI DIODE C 554...
  • Page 44 KD-S680 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 24 NRSA02J-222X MG RESISTOR R 513 NRSA63J-102X MG RESISTOR R 25...
  • Page 45 KD-S680 3 7 63 1515 0 Electrical parts list (Main board) Block No. 01 Item Parts number Parts name Remarks Area R 723 NRSA63J-473X MG RESISTOR R 724 NRSA63J-473X MG RESISTOR R 725 NRSA63J-473X MG RESISTOR R 726 NRSA63J-0R0X...
  • Page 46 KD-S680 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 637 NRSA63J-182X MG RESISTOR C 602...
  • Page 47 KD-S680 3 7 63 1515 0 < M E M O > L 13942296513 u163 3-13 http://www.xiaoyu163.com...

  • Page 48: Packing Materials And Accessories Parts List

    KD-S680 3 7 63 1515 0 Packing materials and accessories parts list Block No. Block No. A1~A8 L 13942296513 A18, A19 KIT : A9~A13 u163 3-14 http://www.xiaoyu163.com...
  • Page 49 1 ENG, SPA, FRE GET0058-002A GET0092-001A CAUTION SHEET LVT0717-001A TROUBLE SHEET(C BT-51018-3 WARRANTY CARD BT-52004-2 WARRANTY CARD BT-51028-1 J=REGIST CAR BT-20071B-S JVC CENTER LIST VKZ4027-202 PLUG NUT A 10 VKH4871-001SS MOUNT BOLT L 13942296513 LOCK NUT A 11 VKZ4328-001 WASHER A 12 WNS5000Z...

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