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JVC KD-S783M Service Manual
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JVC KD-S783M Service Manual

JVC KD-S783M Service Manual

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SERVICE MANUAL
Contents
Safety precaution
Preventing static electricity
Disassembly method
Adjustment method
CD RECEIVER
KD-S783M
1-2
1-3
1-4
1-11
COPYRIGHT
2002 VICTOR COMPANY OF JAPAN, LTD.
UF
Flow of functional
operation unit TOC read
Maintenance of laser pickup
Replacement of laser pickup
Description of major ICs
KD-S783M
KD-S783M
Area Suffix
China
1-12
1-14
1-14
1-15~33
No.49764
1-1
Nov. 2002

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Summary of Contents for JVC KD-S783M

  • Page 1 KD-S783M KD-S783M SERVICE MANUAL CD RECEIVER KD-S783M Area Suffix China Contents Safety precaution Flow of functional Preventing static electricity operation unit TOC read 1-12 Disassembly method Maintenance of laser pickup 1-14 Adjustment method 1-11 Replacement of laser pickup 1-14 Description of major ICs 1-15~33 No.49764...
  • Page 2 KD-S783M 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 3 KD-S783M 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-S783M 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 Tab a Removing the front chassis assembly (See Fig.2, 3)
  • Page 5 KD-S783M Removing the heat sink (See Fig.4) Remove the three screws A on the left side of the body. Heat sink Fig.4 Joint b Removing the bottom cover (See Fig.5, 6) Bottom cover Prior to performing the following procedure, remove the front panel assembly, the front chassis assembly and the heat sink.
  • Page 6 KD-S783M Removing the main board (See Fig.7, 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 three screws D attaching the rear bracket on the back of the body.
  • Page 7 KD-S783M Removing the control switch board (See Fig.10 ~ 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. Rear cover Unjoint the eleven joints e with the front panel and the rear cover.

  • Page 8: Cd Mechanism Section

    KD-S783M 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-S783M assembly Damper bracket Removing the CD mechanism assembly CD mechanism (See Fig.1, 6 to 9) Prior to performing the following procedure, remove the CD mechanism control board and the front bracket (loading motor). Remove the three screws D and the damper bracket.
  • Page 10 KD-S783M 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. Remove the two screws F and the feed motor 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 KD-S783M 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 Microprocessor Microprocessor Disc inserted commands commands TC9462 "53"...
  • Page 13 KD-S783M 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 KD-S783M 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-S783M Description of major ICs TB2118F-X (IC31) : PLL 1. Terminal layout 2. 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 REG. Programmable counter...
  • Page 16 KD-S783M TA2147F-X (IC521) : RF amp. 1.Terminal layout 2.Block diagram PEAK GVSW 12 RFDC 20 A TEBC 50 A RFRP BOTTOM RFRPIN PEAK RFGO 1.75k 240k 15pF x0.5 RFGC 240k 15pF x0.5 AGCIN 180k 40pF 1-16...
  • Page 17 KD-S783M 3.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 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 18 KD-S783M LA4743K (IC301) : 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 ST BY...
  • Page 19 KD-S783M 2.Terminal layout 3.Pin function LA4743B Pin No. Symbol Function Header of IC Power GND OUTRR- Outpur(-) for front Rch Stand by input STBY OUTRR+ Output (+) for front Rch VCC1/2 Power input Output (-) for rear Rch OUTRF- Power GND...
  • Page 20 KD-S783M UPD784215AGC184 (IC701) : Main micon 1.Pin layout 100 ~ 76 26 ~ 50 2.Pin functions (1/2) Pin No. Symbol Function CD mecha sw2 CD mecha sw3 CD mecha sw4 REST Rest sw Loading/Eject motor control (Loading side) Loading/Eject motor control (Eject side)
  • Page 21 KD-S783M 2.Pin functions (2/2) Pin No. Symbol Function SD/ST Station detector or stereo signal input LOCAL Loal or distance selecting output MONO Monoral selection output MP3 CLK CLK output for MP3 decoder MP3 DATA IN Data input for MP3 decoder / inverting input due to converter...
  • Page 22 KD-S783M TC9490FA (IC541) : DSP & DAC 1.Pin layout & Block daiagram TEZI Clock generator SBAD 1-bit Servo control RFRP RFZI ZDET RFCT Digital equalizer Address automatic circuit adjustment circuit BUS0 Data CLV servo slicer BUS1 SLCO BUS2 Sync signal...
  • Page 23 KD-S783M 2.Pin function (1/2) TC9490FA(2/3) Pin No. Symbol Function Bit clock outputpin 32fs, 48fs, or 64fs selectable by command. LRCK L/R channel clock output pin."L" for L channe and "H" for R channel. Output polarity can be inverted by command.
  • Page 24 KD-S783M 2.Pin function (2/2) TC9490FA(3/3) Pin No. Symbol Function RFGC RF amplitude adjustment control signal output pin. TEBC Tracking balance control signal output pin. APC circuit ON/OFF signal output pin. At laser on,high impedance with UHS="L" ,H output with UHS="H".
  • Page 25 KD-S783M TC94A02F-005 (IC401) : DSP AD10 VDDT LRCKiA BCKiA SDi0 AD13 VDDT AD14 /MiCK AD16 MiDio AD15 MiMD /RESET Timing Generator General Input Port 1-25...
  • Page 26 KD-S783M 3.Pin function(1/2) TC94A02F-005 Pin No. Symbol Function Hard reset input terminal(H:Normal operation L: Reset) /RESET Micon I/F mode select input terminal MiMD External SRAM address output 0 terminal External SRAM address output 1 terminal Micon I/F data input/output terminal...
  • Page 27 KD-S783M 3.Pin function(2/2) TC94A02F-005 Pin No. Symbol Function External SRAM data input/output 4 terminal Digital power supply (2.5V) terminal External SRAM data input/output 5 terminal External SRAM data input/output 6 terminal External SRAM data input/output 7 terminal VSSP VCO GND...
  • Page 28 KD-S783M AN80T07 (IC901) : 1.Pin layout 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 2.Block diagram MODEI *ASO,Peak Cument Protection. *Thermal Protection (Except VDD,Comp output). Reference Voltage Outputs Drive Drive Drive Drive MODE2 SW5V Out VDD BATT.DET COMP...
  • Page 29 KD-S783M KSR1008VDT110-X (IC451) : CMOS SRAM 1. Pin layout 2. Pin function Pin No. Symbol Function Address inputs A0~A3 Chip select Data inputs / outputs I/O1, I/O2 Power (+3.3V) Ground I/O1 I/O8 10,11 Data inputs / outputs I/O3, I/O4 I/O2...
  • Page 30 KD-S783M LA6574H-X (IC501) :CD driver 1.Terminal layout & brock daiagram Thermal Shutdown VCC2 1 28 REV POWER supplise 27 FWD V05- 2 26 S-GND V05+ 3 25 VCONT V04+ 4 V04- 5 24 VIN4 23 VIN4G V03+ 6 V03- 7...
  • Page 31 KD-S783M 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 32 KD-S783M TEA6320T-X (IC161) : E. volume 1. Pin layout 2. Block diagram VOLUME 2 MUTE 0 to 55 dB FUNCTION BALANCE OUTRR OUTLR ZERO CROSS FENDER REAR POWER DETECTOR OUTRF OUTLF SUPPLY VOLUME 1 BASS TREBLE +20 to -31 dB...
  • Page 33 KD-S783M NJM4565M-WE (IC581) : Ope. amp A OUTPUT A INPUT B OUTPUT B INPUT A INPUT B INPUT NJU7241F25-X (IC461) : Regulator 1.Pin layout 2.Block diagram Short protect GND 1 5 STB VIN 2 3 VOUT VIN 2 VOUT 3...
  • Page 34 KD-S783M KD-S783M VICTOR COMPANY OF JAPAN, LIMITED MOBILE ELECTRONICS DIVISION PERSONAL & MOBILE NETWORK BUSINESS UNIT. 10-1,1Chome,Ohwatari-machi,Maebashi-city,371-8543,Japan Printed in Japan 1-34 (No.49764) 200211...

  • Page 35: Schematic Diagrams

    KD-S783M SCHEMATIC DIAGRAMS CD RECEIVER KD-S783M CD-ROM No.SML200211 Area Suffix China Contents Block diagram Standard schematic diagrams Printed circuit boards 2-5~6 No.49764SCH COPYRIGHT 2002 VICTOR COMPANY OF JAPAN, LTD. Nov. 2002...
  • Page 36 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 37: Block Diagram

    KD-S783M Block diagram GEB10017A LOADING MOTOR CD DRIVER FEED MOTOR SRAM LOADING+ LOADING+ IC501 SPINDLE MOTOR LOADING- LOADING- IC451 FEED+ FEED+ REST SW FEED- FEED- SPINDLE+ SPINDLE+ A0~A16 SPINDLE- SPINDLE- D0~D7 REST SW SW1~SW4 SW1~SW4 CD LSI OUTFL IC541 E.VOLUME POWER AMP.

  • Page 38: Standard Schematic Diagrams

    KD-S783M KD-S783M Standard schematic diagrams Main amp. section D243 1SS133 R244 C243 R243 0.047 180k R245 C241 R247 1/50 R242 R241 IC301 C242 22/16 LA4743K Q241 QAU0258-002 2SD601A( R) LEVEL R161 D240 2.2/50 4.7u 220k 1SS355-X C312 R312 OUTLF OUTLR...
  • Page 39 KD-S783M Mecha control section R502 6.8k R503 5.6k R586 R584 R587 C582 R581 CD.R R501 6.8k R-CH R585 C584 1.5k 4.7/25 C503 R506 47/6.3 8.2k Q501 C581 CN601 2SB1322 560p D501 QGB2027M1-26S 1A3G-T1 IC581 NJM4565M C591 560p IC501 LA6574H C592...
  • Page 40 KD-S783M KD-S783M LCD & Key switch section QSW0793-001 JS690 RPM6938-SV4 IC602 R661 R662 VCM0335-001 CJ601 LCD1 ACC5V QLD0225-001 REMOCON ENC1 ENC2 BUS2 LCDCL LCDDA LCDCE KEY0 BUS1 KEY1 KEY2 R605 R604 R603 R602 R601 Key0 2.2k 3.9k 2.7k 1.8k 1.2k 1.8k...
  • Page 41 KD-S783M Printed circuit boards Main board (Forward side) R904 IC901 C914 C901 C904 L901 D341 C802 J801 C911 J321 Q321 CN901 C913 C905 Q341 D902 D901 C902 C163 Q891 R901 R341 C173 C910 C907 R321 R351 R331 C316 C903 C244...
  • Page 42 KD-S783M Main board (Reverse side) C916 C917 C891 IC901 R971 J321 C912 R972 D972 L901 C325 D971 J801 C906 C324 C323 D901 C904 CN901 C914 C322 R902 C852 C971 C163 C173 Q351 Q331 C905 C913 R901 C241 C244 C907 C910...
  • Page 43 < M E M O >...
  • Page 44 KD-S783M VICTOR COMPANY OF JAPAN, LIMITED MOBILE ERECTRONICS DIVISION PERSONAL & MOBILE NETWORK BUSINESS UNIT. 10-1,1Chome,Ohwatari-machi,Maebashi-city,371-8543,Japan Printed in Japan No.49764SCH 200211...

  • Page 45: Parts List

    KD-S783M PARTS LIST [ KD-S783M ] * All printed circuit boards and its assemblies are not available as service parts. Area suffix UF ---------------------------- China - 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 46 KD-S783M Exploded view of general assembly and parts list Block No.
  • Page 47 KD-S783M 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 SIDE PANEL FSKM3011-002SSF BOTTOM COVER FSMA3004-203 INSULATOR QYSDST2604Z SCREW 3 CHASSIS+MECHA FSKZ4005-001 SCREW 2 CHASSIS+SIDE PANEL...
  • Page 48 KD-S783M Parts list (General assembly) Block No. M1MM Item Description Parts number Parts name Q'ty Area QYSDST2606Z SCREW 1 ANT SCREW 1 LINE OUT QYSDSF3006Z QYSDST2606Z SCREW 3 16P & REG BKT QYSDST2004Z SCREW LV40847-002A SPACER FSYH4036-069 SHEET FSYH4071-001 LIGHTING SHEET...
  • Page 49 KD-S783M CD mechanism assembly and parts list Block No. Grease G-31SA TN-CCD1001Z-138S G-31SA(Bottom side) RX-405 106 29...
  • Page 50 KD-S783M Parts list (CD mechanism) Block No. MBMM Item Parts number Parts name Q'ty Description Area 30310101T FRAME 30310103T DANPER PIN 30310107T UPPER PLATE 30310108T SEL STOP PLATE 30310142T SEL ARM (L)L 30310143T SEL ARM (R)L 30310145T S ARM SPRING(L)
  • Page 51 KD-S783M 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) 30311112T LDG GEAR (5) 30311136T...
  • Page 52 KD-S783M Electrical parts list (Main board) Block No. 01 Item Parts number Parts name Remarks Area Item Parts number Parts name Remarks Area QEKJ1CM-226Z E CAPACITOR 22MF 20% 16V C 312 QERF1HM-225Z E CAPACITOR 2.2MF 20% 50V NCB31EK-473X C CAPACITOR...
  • Page 53 KD-S783M Electrical parts list (Main board) Block No. 01 Item Parts number Parts name Remarks Area Item Parts number Parts name Remarks Area C 544 QERF1AM-107Z E CAPACITOR 100MF 20% 10V C 910 QERF1CM-476Z E CAPACITOR 47MF 20% 16V C 545...
  • Page 54 KD-S783M Block No. 01 Electrical parts list (Main board) Item Remarks Item Remarks Parts number Parts name Area Parts number Parts name Area IC702 IC-PST600M/G/-W R 163 NRSA63J-222X MG RESISTOR IC901 AN80T07 R 164 NRSA63J-473X MG RESISTOR QNB0100-002 ANT TERMINAL...
  • Page 55 KD-S783M Electrical parts list (Main board) Block No. 01 Item Parts number Parts name Remarks Area Item Parts number Parts name Remarks Area R 536 NRSA63J-473X MG RESISTOR R 734 NRSA63J-222X MG RESISTOR R 537 NRSA63J-273X MG RESISTOR R 735...
  • Page 56 KD-S783M Block No. 02 Electrical parts list (Front board) Item Parts number Parts name Remarks Area Item Parts number Parts name Remarks Area C 601 NCB31HK-223X C CAPACITOR R 642 NRSA63J-471X MG RESISTOR C 602 NCS31HJ-681X C CAPACITOR R 643...
  • Page 57 KD-S783M < M E M O > 3-13...
  • Page 58 KD-S783M Packing materials and accessories parts list Block No. Block No. KIT : A4~A8 3-14...
  • Page 59 KD-S783M Parts list (Packing) Block No. M3MM Item Parts number Parts name Q'ty Description Area FSPG4002-001 POLY BAG 1 INST.BOOK QPA00801205 POLY BAG 1 SCREW KIT --------------- POLY BAG 1 HARD CASE --------------- SHEET QPC03004315P POLY BAG 1 SET PACKING CASE...