JVC KD-LX10 Service Manual

Cd receiver

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Instructions manual (40 pages)

Installation & connection manual (4 pages)

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Page 1 KD-LX10/KD-LX30 KD-LX10/KD-LX30 SERVICE MANUAL CD RECEIVER KD-LX10 KD-LX30 Area Suffix J ---- Nortern America Contents Functions of the mechanism under Safety precaution the servise mode 2-18 Instructions 1-3~ Flow of functional until TOC read 2-20 Disassembly method Description of major ICs...
Page 2: Safety Precaution
Safety precaution ! CAUTION 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. ! CAUTION Please use enough caution not to see the beam directly or touch it in case of an adjustment or operation check.
Page 3 Move the top chassis upward and disconnect the CD mechanism connector from the main board connector by pulling it. Remove the top chassis from the body. Fig.2 Top chassis Heat sink Fig.4-1 (KD-LX30) Fig.3 Top chassis Fig.4-2 (KD-LX10) Fig.5...
Page 4 S561 and S562 on the main board with the part e of the operation assembly (Refer to Fig.6-3). Joint a Rear heat sink Joint a CN702 Front panel assembly Fig.6-2 (KD-LX10) Rear panel Fig.7-1 (KD-LX30) Rear heat sink S652 Main board S651 Rear panel Fig.6-3...
Page 5 Front panel assembly Fig.6-1 (KD-LX30) CN504 CN503 CN701 Joint a Joint a CN702 Front panel assembly Fig.6-2 (KD-LX10) Front panel assembly Front panel assembly CN701 Fig.8 Fig.9 Joints b Removing the Front Board (See Fig.10) Prior to performing the following procedure, remove the top chassis assembly and the front panel assembly.
Page 6 Lifter unit assembly Remove the two screws R attaching the feed motor (R). Fig.11-2 (KD-LX10) Lifter unit assembly Lifter unit assembly Clutch assembly Clutch assembly Feed motor (R) assembly...
Page 7 KD-LX10/KD-LX30 Removing the operation assembly (See Fig.14 to 17) Prior to performing the following procedure, remove the top chassis assembly, the front panel assembly and the lifer unit. Bracket (R) Remove the screws S attaching the right and left Bracket (L) brackets which fix gears on both sides of the operation assembly.
Page 8 KD-LX10/KD-LX30 Removing the operation switch board (See Fig.18 and 19) Prior to performing the following procedure, remove the operation assembly. Remove the six screws T attaching the button panel on the operation assembly. Pull out the operation switch board from inside of the button panel.
Page 9 KD-LX10/KD-LX30 Removing the CD mechanism control Damper bracket board (See Fig.1 and 2) Pickup cover Remove the screw N and the pickup cover attached to the front bracket with the two double-sided tapes. Unsolder the part f and g on the CD mechanism control board.
Page 10 KD-LX10/KD-LX30 Loading motor Belt Fig.5 Removing the CD mechanism ass’y CD mechanism ass’y (See Fig.1, 6 to 9) Damper bracket Prior to performing the following procedure, remove the CD mechanism control board and the front bracket (loading motor). Flame Remove the three screws I and the damper bracket.
Page 11 KD-LX10/KD-LX30 Removing the feed motor ass’y Part n FD screw (See Fig.10) Feed motor ass’y Prior to performing the following procedure, remove the CD mechanism control board, the front bracket Part O (loading motor) and the CD mechanism ass’y. Remove the two screws K and the feed motor ass’y.
Page 12 KD-LX10/KD-LX30 Damper bracket Removing the CD mechanism control CD mechanism ass’y board(See Fig.1 and 2) Unsolder the part a and b on the CD mechanism control board. Remove the stator c fixing the CD mechanism control board and the damper bracket (To remove the stator smoothly, pick up the center part).
Page 13 KD-LX10/KD-LX30 Removing the loading motor Loading motor (See Fig.3 to 5) Prior to performing the following procedure, remove the CD mechanism control board. Belt Remove the two springs f attaching the CD mechanism ass’y and the front bracket. Fig.5 Remove the two screws B and the front bracket while pulling the flame outward.
Page 14 KD-LX10/KD-LX30 Removing the feed motor ass’y Part j FD screw (See Fig.10) Feed motor ass’y Prior to performing the following procedure, remove the CD mechanism control board, the front bracket Part k (loading motor) and the CD mechanism ass’y. Remove the two screws F and the feed motor ass’y.
Page 15 KD-LX10/KD-LX30 2-13...
Page 16 KD-LX10/KD-LX30 Caution : Replacing the pickup To prevent damage to the laser diode Caution : static electricity destroys the laser diode. Solder rejection or cuts a pattern with Always take countermeasure nipper at shortstop point after short performing repairs around the laser circuiting with clip with terminal face of pickup.
Page 17 KD-LX10/KD-LX30 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 18 KD-LX10/KD-LX30 Extension code connecting method Using the extention cords to connect the front panel with the main board Remove the main board follwing the disassembly methode. Then reattachi the heat sink to main board. Using the 2pin extention cord (EXTLX001-2p),...
Page 19 KD-LX10/KD-LX30 Extension cord list for KD-LX10/KD-LX30 EXTLX002-JIG : Kit including the following 8 extension parts. Parts number Quantity Description EXTLX001-2P 2Pin, 30cm extension cord EXTLX001-6PF 6Pin, 30cm flat wire EXTLX001-6PC 6Pin x 2, interlocking connector EXTLX002-16PF 16Pin flat wire EXTLX002-16PC...
Page 20 KD-LX10/KD-LX30 Reassembly 1. Perform reassembly be reversing the removing process of "removal of main parts". CAUTION 1: Prior to reattaching the heat sink, make sure to reattache the top chassis. 2-18...
Page 21 KD-LX10/KD-LX30 Functions of the mechanism under the service mode With the three error modes stored in maximum in the internal memory of the mechanism in the body of this system, it is posible under the service mode to call the contents of error according to the following steps when any error has occurred.
Page 22 KD-LX10/KD-LX30 1. Display of mechanism error Occurrence condition Description Error codes 09 0011 1. SW4 is not turned off. Disc loading error 09 0013 2. SW3 is not turned on. Eject error 1. SW# is not turned off. 01 0021 1.
Page 23 KD-LX10/KD-LX30 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 MN662748RPM 57 MN662748RPM "32"...
Page 24 KD-LX10/KD-LX30 Feed Section Is the voltage output at Is the wiring for IC941 Is 5V present at IC601 Check CD 9V IC631 pin "26" 2.5V or (10) ~ (15) correct? pin "5"? and 5V. Check the vicinity of IC941. Is 4V present at both...
Page 25 KD-LX10/KD-LX30 FAN8037 (IC581) : CD driver 1. Pin layout & Block diagram 48 47 46 45 44 43 42 41 40 39 38 37 STAND BY T.S.D ALL MUTE POWER SAVE 13 14 15 16 17 18 19 20 21 22 23 24 2.
Page 26 KD-LX10/KD-LX30 UPD784215GC-165 (IC701) : CPU 1. Pin layout 2. Pin function (1/2) Symbol Function CD mechanism detect switch CD mechanism detect switch CD mechanism detect switch REST-SW Reset signal input terminal from CD mechanism Loading motor control signal input terminal...
Page 27 KD-LX10/KD-LX30 2. Pin function (2/2) Symbol Function LCD-DA Data output terminal for LCD driver LCD-CL Clock output terminal for LCD driver LCD-CE1 Chip enable 1 output terminal for LCD driver BUZZER BUZZER control signal output terminal E2PR-DA-I Data input terminal from EEPROM...
Page 28 KD-LX10/KD-LX30 BA3220FV-X (IC341) : Driver 1. Pin layout & Block diagram LGND OUTL OUTR RGND CR - CR + REFL REFR FILTER 2. Pin functions Symbol Function Powe supply terminal for amp. power supply terminal. input terminal. Negative feedback terminal.
Page 29 KD-LX10/KD-LX30 BA4905-V3 (IC961) : Regulator 1.Terminal layout 2.Block daigram REGULATOR RESET RESET COMP VDD 5.7V CD 8V AUDIO 9V CTRL ILM 10V 3.Pin function Pin no. Symbol Function RESET If VDD voltage becomes 4V or less.RESET output becomes low level.
Page 30 KD-LX10/KD-LX30 BD3860K (IC911) : E. volume 1. Pin layout 2. Block diagram GND FIL VCC SEL1 VIN1 LOUD1 HF1 LF1 DET1 VCA1 MIX1 BBOUT1 TIN1 TNF1 BNF1 BOUT1 POWER FADER SUPPLY MAIN INPUT CH1 FRONT OUTF1 TREBLE BASS VOLUME GAIN...
Page 31 KD-LX10/KD-LX30 BR24C16F-X (IC703) : EEPROM 1. Pin layout 2. Pin function Symbol I/O Function Power supply. A0,A1,A2 No use connect to GND. Serial clock input. Serial data I/O of slave and ward address. Write protect terminal. 3. Block diagram 16kbit EEPROM allay...
Page 32 KD-LX10/KD-LX30 HD74HC126FP-X (IC771) : Buffer 1. Pin layout 2. Function Inputs Outputs 3. Block diagram Output Input Output Sample as Load Circuit 1 Output Sample as Load Circuit 1 Output Sample as Load Circuit 1 NJM4565M-W (IC151,IC171,IC323,IC361,IC461) : Ope amp.
Page 33 KD-LX10/KD-LX30 LC75811W (IC602) : LCD driver 1. Pin layout 2. Block diagram COMMON SEGMENT DRIVER DRIVER LATCH CGRAM CGROM ADRAM VLCD INSTRUCTION 5x9x16 5x9x240 DECODER bits bits bits VLCD1 VLCD2 ADDRESS DCRAM INSTRUCTION VLCD3 COUNTER 48x8 REGISTER bits ADDRESS REGISTER...
Page 34 KD-LX10/KD-LX30 LC75823W (IC601,IC602) : 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 35 KD-LX10/KD-LX30 NJM2100M-W (IC821) : Dual operation amplifier 1. Pin layout A OUTPUT A - INPUT B OUTPUT A + INPUT B - INPUT B + INPUT 2. Block diagram - INPUT OUTPUT + INPUT IC-PST600M/G/-W (IC702) : System reset Vout...
Page 36 KD-LX10/KD-LX30 NJM2904M-W (IC951) : Dual operation amplifier 1. Pin layout A OUT A - IN B OUT A + IN B - IN B + IN 2. Block diagram INPUTS OUTPUT 2-34...
Page 37 KD-LX10/KD-LX30 RPM6938-SV4 (IC603) : Remote control receiver Comp Rout Detector conversion trimming circuit magnetic shield TDA7560 (IC941) : 4ch bridge amplifier 1. Pin layout 2. Block diagram VCC1 VCC2 ST-BY MUTE OUT1+ OUT1- P-GND1 OUT2+ OUT2- P-GND2 OUT3+ OUT3- P-GND3...
Page 38 KD-LX10/KD-LX30 TA2109F-X (IC501) : RF amp. 1. Pin layout 2. Block diagram 15k ohm 30k ohm 7.67k ohm 15k ohm 10k ohm SBAD 10k ohm 20uA 50k ohm 30k ohm 20pF 36pF 10k ohm 10k ohm 21k ohm 29k ohm 2VRO 7.96k ohm...
Page 39 KD-LX10/KD-LX30 TB2118F-X (IC21) : 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 Programmable counter REG. 20-bit BINARY COUNTER Resistor 1...
Page 40 KD-LX10/KD-LX30 TC9462F (IC521) : DSP & DAC 1.Pin Layout 2.Pin Function (1/2) Symbol Pin No. Function Test mode terminal. Normally, keep at open TEST0 Playback speed mode flag output terminal Playback speed mode flag output terminal UHSO Sub code Q data emphasis flag output terminal. "H"=ON "L"=OFF EMPH Channel clock output terminal.(44.1kHz) "H"=Rch "L"=Lch...
Page 41 KD-LX10/KD-LX30 2.Pin Function (2/2) Symbol Function Pin No. RFRP signal center level input terminal RFCT RFRP zero cross input terminal RFZI RF ripple signal input terminal RFRP Focus error signal input terminal Sub-beam adder signal input terminal SBAD Test input terminal Normally, keep at "vref" level TSIN Tracking error signal input terminal.
Page 42 KD-LX10/KD-LX30 2-40...
Page 43: Block Diagrams
Block diagrams KD-LX10 Front speaker IC361 L-CH LOUTF INFL IC941 OUTFL ,OUTFR TUNER PACK R-CH LOUTR INRL POWER AMP. OUTRL ,OUTRR LINE AMP. FM/AM IC911 CD-L,CD-R S.METER MEMORY E.VOLUME IC461 SEEK/STOP LOUTF INFR Rear speaker AMIN SD/ST LOUTR INRR IC961 LINE AMP.
Page 44 Line out LEVEL IC21 FRONTL,FRONTR FRONT VOL-DA Line out VOL-CLK PLLCE REARL,REARR REAR PLLDA IC771 IC821 IC703 PLLCL CH-L EPROM JVC BUS CRUISE PLLDI CH-R IC701 SI/SO,SO,I/OBUSINT,BUSSCK CRUISE CDON AU.L,AU.R CASW1 RESET LCDDA CASW2 IC151 AU.LI,AU.RI IC171 Line IN W.VOL...
Page 45 Standard schematic diagrams KD-LX10J Main amp section TUNER SIGNAL CD SIGNAL CD CHANGER SIGNAL FRONT SIGNAL REAR SIGNAL...
Page 46 KD-LX10J CD servo & LCD control section CD SIGNAL...
Page 47 KD-LX30J Main amp section TUNER SIGNAL CD SIGNAL CD CHANGER SIGNAL AUX SIGNAL FRONT SIGNAL REAR SIGNAL...
Page 48 KD-LX30J CD servo & LCD control section CD SIGNAL...
Page 49: Printed Circuit Boards
Printed circuit boards KD-LX10J Main board (Forward side) Main board (Reverse side) LCD board (Forward side) LCD board (Reverse side) Switch board (Forward side) Switch board (Reverse side)
Page 50 KD-LX30J Main board (Forward side) Main board (Reverse side) LCD board (Forward side) LCD board (Reverse side) Switch board (Forward side) Switch board (Reverse side)
Page 51: Table Of Contents
PARTS LIST [ KD-LX10 ] [ KD-LX30 ] * All printed circuit boards and its assemblies are not available as service parts. Areas suffix J -------------- Northern America - Contents - Exploded view of general assembly and parts list CD mechanism assembly and parts list...
Page 52 [CAUTION] Two kinds of POWER IC (IC941) are used for these models. When you change the POWER IC (IC941), you should confirm the printed parts number of IC. Please change other parts listed below at the same time. The set will break down when the undermentioned parts are mixed. Electrical parts LA4743B TDA7560...
Page 53: Exploded View Of General Assembly And Parts List
Exploded view of general assembly and parts list Block No. Switch board 55 45 39 55 Main board LCD board...
Page 54 Parts list ( General assembly ) Block No. M1MM Item Parts number Parts name Q'ty Description Area ------------ CD MECHA LV41606-001A FFC P.MECHA LV10189-001A CHASSIS TOP LV10188-002A FRONT COVER LV40828-002A BLIND LV31602-001A SIDE HEAT SINK LV31603-001A INSULATOR QYSPST2004M SCREW QYSDST2604Z SCREW 3 T.
Page 55 6 FOR GEAR 1-6 WDM214540 WASHER 2 FOR CLUTCH ASS' QYSPSPU1725M SCREW 4 LO.UNIT A+DIS.P LV30981-004A CLUTCH ASS'Y LV10317-001A BUTTON PANEL 1 KD-LX10 LV10317-002A BUTTON PANEL 1 KD-LX30 LV10318-001A BUTTON BASE LV20615-001A PRESET BUTTON 1 LV20616-001A PRESET BUTTON 2 LV31613-001A...
Page 56: Cd Mechanism Assembly And Parts List
CD mechanism assembly and parts list Block No. Grease G-31SA TN-CCD1001Z-138 G-31SA(Bottom side) RX-405 106 29...
Page 57 Parts list ( CD mechanism ) Block No. M2MM 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) 30310112T TRIG LEVER 30310155T...
Page 58 Parts list ( CD mechanism ) Block No. M2MM Item Parts number Parts name Q'ty Description Area 19501403T WIRE CLAMPER 30311037T PICK UP FPC(Z) 30311036T CONNECT.PCB(Z-J 30311038T WIRE (5P-Z) 30311039T WIRE (LD-Z) 30311040T WIRE (FD-Z) 30311041T WIRE (RS-Z) 64180402T DET SWITCH 2 ESE22MH1 64180403T DET SWITCH...
Page 59: Electrical Parts List
C CAPACITOR C 303 QEK41CM-476 E CAPACITOR KD-LX30 QER41AM-227 E CAPACITOR 220MF 20% 10V C 304 QEKJ1AM-107Z E CAPACITOR KD-LX10 NCB21HK-103X C CAPACITOR C 305 QEK41EM-475 E CAPACITOR 4.7MF 20% 25V QEKJ1CM-226Z E CAPACITOR 22MF 20% 16V C 306 QEK41EM-475 E CAPACITOR 4.7MF 20% 25V...
Page 60 NCB21HK-103X C CAPACITOR CN301 QGA2501C1-07 7P CONNECTOR KD-LX30 C 581 QER41AM-107 E CAPACITOR 100MF 20% 10V CN301 QGA2501C1-03 3P CONNECTOR KD-LX10 C 582 NCB21HK-103X C CAPACITOR CN302 QGA2501C1-06 6P CONNECTOR KD-LX30 C 583 QEKJ1CM-226Z E CAPACITOR 22MF 20% 16V CN501...
Page 61 IC322 BU4066BCFV-X KD-LX30 R 27 NRSA02J-393X MG RESISTOR IC323 NJM4565M-W KD-LX30 R 28 NRSA02J-103X MG RESISTOR IC361 NJM4565M-W I.C(MONO-ANA) KD-LX10 R 29 NRSA02J-101X MG RESISTOR IC401 BA3220FV-X KD-LX30 R 31 NRSA02J-222X MG RESISTOR IC461 NJM4565M-W I.C(MONO-ANA) KD-LX10 R 32 NRSA02J-473X...
Page 62 Item Parts number Parts name Remarks Area Item Parts number Parts name Remarks Area R 218 NCB21HK-222X MG RESISTOR KD-LX10 R 403 NRSA02J-333X MG RESISTOR KD-LX30 R 219 NRSA02J-101X MG RESISTOR R 404 NRSA02J-333X MG RESISTOR KD-LX30 R 231 NRSA02J-222X...
Page 63 X 701 QAX0617-001Z CRYSTAL R 740 NRSA02J-473X MG RESISTOR KD-LX30 X 702 QAX0445-001 CRYSTAL R 741 NRSA02J-473X MG RESISTOR KD-LX10 R 742 NRSA02J-103X MG RESISTOR R 743 NRSA02J-473X MG RESISTOR R 746 NRSA02J-473X MG RESISTOR R 747 NRSA02J-473X MG RESISTOR...
Page 64 R 641 NRSA02J-392X MG RESISTOR C 608 NCB21HK-104X C CAPACITOR KD-LX30 R 642 NRSA02J-821X MG RESISTOR C 608 NCB21HK-102X C CAPACITOR KD-LX10 R 643 NRSA02J-821X MG RESISTOR C 609 NDC21HJ-101X C CAPACITOR KD-LX30 R 644 NRSA02J-122X MG RESISTOR C 610 NBE20JM-475X...
Page 65: Packing Materials And Accessories Parts List
Packing materials and accessories parts list Block No. Block No. A1,A2,A5 KIT1:A9~A13 A3,A4,A6~A8 A19~A21 Front view...
Page 66: Kd-Lx10
QPA01703505P POLY BAG QPA00801205 POLY BAG QPC03004315P POLY BAG 1 SET LV31661-001A PACKING CASE 1 KD-LX30 LV31619-001A PACKING CASE 1 KD-LX10 LV10193-201A PAPER CUSHION Accessories parts list Block No. M4MM Parts number Parts name Q'ty Description Item Area LVT0408-001A I.BOOK(KD-LX30)

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JVC KD-LX10 Service Manual

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