JVC KD-SX980 Service Manual
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JVC KD-SX980 Service Manual

JVC KD-SX980 Service Manual

Cd receiver
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QQ
3 7 63 1515 0
SERVICE MANUAL
TE
L 13942296513
Contents
www
.
http://www.xiaoyu163.com
CD RECEIVER
SOUND
U
F
R
SOURCE
D
VOL
VOL
1-2
1-3
1-4
1-19
x
ao
u163
y
i
COPYRIGHT
2002 VICTOR COMPANY OF JAPAN, LTD.
http://www.xiaoyu163.com
2 9
8
3
6 7
1 3
1 5
Flow of functional
operation unit TOC read
co
.
KD-SX980
9 4
2 8
0 5
8
2 9
9 4
2 8
Area Suffix
J
Northern America
1-20
1-22
1-22
1-23~43
m
9 9
9 9
No.49709
Mar. 2002

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Summary of Contents for JVC KD-SX980

  • Page 1: Table Of Contents

    KD-SX980 3 7 63 1515 0 SERVICE MANUAL CD RECEIVER KD-SX980 SOUND SOURCE L 13942296513 Area Suffix Northern America Contents Safety precaution Flow of functional Preventing static electricity operation unit TOC read 1-20 Disassembly method Maintenance of laser pickup...

  • Page 2: Safety Precaution

    KD-SX980 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-SX980 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-SX980 3 7 63 1515 0 Disassembly method Removing the front panel unit (See Fig.1) Press the release switch and remove the front panel unit in the direction of the arrow. Front panel unit Fig.1 Removing the front chassis (See Fig.2 to 4)
  • Page 5 KD-SX980 3 7 63 1515 0 Removing the bottom cover (See Fig.6) Joints d Prior to performing the following procedure, remove Bottom cover the front chassis and the heat sink. Turn the body upside down. Insert a screwdriver to the two joints d and two joints...
  • Page 6 KD-SX980 3 7 63 1515 0 Removing the MP3 board (See Fig.9) Prior to performing the following procedure, remove the top cover. Disconnect the wire from connector CN601on the MP3 board. Remove the five screws G and the MP3 board, releasing CN601 the joint g and h.
  • Page 7 KD-SX980 3 7 63 1515 0 Removing the (LCD & key) control switch board (See Fig.11 to 13) Prior to performing the following procedure, remove the front panel assembly. Remove the four screws I attaching the rear cover on the back of the front panel assembly.

  • Page 8: Cd Mechanism Section

    KD-SX980 3 7 63 1515 0 <CD mechanism section> Removing the top cover (See Fig.1 and 2) Top cover Joints a Remove the two screws A on each side of the body. Lift the front side of the top cover and move the cover backward to release the two joints a.
  • Page 9 KD-SX980 3 7 63 1515 0 Removing the DET switch (See Fig.3 and 6) Extend the two tabs c of the feed sw. holder and pull out the switch. DET switch Unsolder the DET switch wire if necessary. Connector board Removing the chassis unit (See Fig.7 and 8)
  • Page 10 KD-SX980 3 7 63 1515 0 Removing the clamper assembly (See Fig.9 and 10) Prior to performing the following procedure, remove Clamper arm the top cover. spring Remove the clamper arm spring. Move the clamper assembly in the direction of the arrow to release the two joints d.
  • Page 11 KD-SX980 3 7 63 1515 0 Feed sw. holder Removing the pickup unit (See Fig.13 to 17) Joint f Prior to performing the following procedure, remove the top cover, the connector board and the chassis unit. Remove the screw D and pull out the pu.
  • Page 12 KD-SX980 3 7 63 1515 0 Removing the trigger arm (See Fig.18 and 19) Joint k Prior to performing the following procedure, remove the top cover, the connector board and the clamper unit. Trigger arm Turn the trigger arm in the direction of the arrow to release the joint k and pull out upward.
  • Page 13 KD-SX980 3 7 63 1515 0 Joint a' Link plate Joint r Removing the select arm (L) / select lock Select arm (L) Joint z Select arm (R) arm (See Fig.21 and 22) Select lock arm Prior to performing the following procedure, remove the top plate assembly.
  • Page 14 KD-SX980 3 7 63 1515 0 Joint a' Link plate Joint r Removing the select arm (R) / link plate Select arm (L) Joint z Select arm (R) (See Fig.21 and 22) Select lock arm Prior to performing the following procedure, remove the top plate assembly.
  • Page 15 KD-SX980 3 7 63 1515 0 Roller guide Removing the loading roller assembly Washer (See Fig.27 to 29) Loading roller assembly Prior to performing the following procedure, remove the clamper assembly and the top plate assembly. Roller guide Push inward the loading roller assembly on the gear side and detach it upward from the slot of the joint d’...
  • Page 16 KD-SX980 3 7 63 1515 0 Removing the loading gear (5), (6) and Loading gear bracket (7) (See Fig.31 and 32) Loading gear (6) Prior to performing the following procedure, remove the top cover, the chassis unit and the top plate assembly.
  • Page 17 KD-SX980 3 7 63 1515 0 Removing the gears (See Fig.33 to 36) Prior to performing the following procedure, remove the top cover, the chassis unit, the top plate assembly and the pickup unit. Slot j' Pull out the feed gear.
  • Page 18 KD-SX980 3 7 63 1515 0 Removing the turn table / spindle motor Turn table (See Fig.37 and 38) Prior to performing the following procedure, remove the top cover, the connector assembly and the chassis / clamper assembly. Remove the two screws K...

  • Page 19: Adjustment Method

    KD-SX980 3 7 63 1515 0 Adjustment method Test instruments required adjustment Standard volume position 1.Digital oscilloscope (100MHz) Balance and Bass & Treble volume : Indication "0" 2.AM Standard signal generator Loudness : OFF 3.FM Standard signal generator 4.Stereo modulator 5.Electric voltmeter...

  • Page 20: Kd-Sx980

    KD-SX980 3 7 63 1515 0 Flow of functional operation unit TOC read Power ON When the laser diode correctly Set Function CD When the pickup correctly moves emits to the inner area of the disc Microprocessor $82 $81...
  • Page 21 KD-SX980 3 7 63 1515 0 Feed section Is the voltage output at Is the wiring for IC521 Is 3.3V present at IC561 IC521 pin "40" 5V or 0V? (56)~(64) correct? pin "20"? Check CD 8V Check the vicinity of and 5V.

  • Page 22: Maintenance Of Laser Pickup

    KD-SX980 3 7 63 1515 0 Maintenance of laser pickup (1) Cleaning the pickup lens Before you replace the pickup,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.

  • Page 23: Description Of Major Ics

    KD-SX980 3 7 63 1515 0 Description of major ICs BR24C01AFV-W-X (IC502) : EEPROM 1.Pin layout 2.Block diagram 1kbit EEPROM ARRAY 8bit 7bit SLAVE/WORD ADDRESS DATA 7bit ADDRESS REGISTER DECODER REGISTER L 13942296513 START STOP CONTROL LOGIC HIGH VOLTAGE GEN.
  • Page 24 KD-SX980 3 7 63 1515 0 LA6579H-X (IC681) : 4-Channel bridge driver 1. 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...
  • Page 25 KD-SX980 3 7 63 1515 0 3.Pin function Pin No. Symbol Function CH1 input AMP_inverted input VIN1-A CH1 input AMP_non-inverted input VIN1+A CH1 and CH2 power stage power supply VCCP1 Output pin(+)for channel 1 VO1+ CH1 output pin (-) for channel 1...
  • Page 26 KD-SX980 3 7 63 1515 0 TC94A14FA (IC621) : DSP & DAC 1.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 L 13942296513...
  • Page 27 KD-SX980 3 7 63 1515 0 TC94A14FA Symbol Description 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" Shorter than fixed period "AV...
  • Page 28 KD-SX980 3 7 63 1515 0 UPD784215AGC175 (IC701) : Main micon 1.Pin layout 100 ~ 76 26 ~ 50 2.Pin functions(1/2) Pin No. Symbol Function CD RESET Reset output for CD sub-micon CD MUTING Muting request of CD sub-micon...
  • Page 29 KD-SX980 3 7 63 1515 0 2.Pin functions(2/2) Pin No. Symbol Function SD/ST Station detector or stereo indicator input MONO Monoral selection output H:Monoral 56~60 DETACH Detach detect input H:Detach SEEK/STOP Auto seek and stop selecting output FM/AM FM,AM band selecting output H:FM...
  • Page 30 Chip enable output for LCD driver LCD DA Data output for LCD driver LCD CK Clock outout for LCD driver BUS I/O JVC BUS input/output control terminal (negative) BUS I/O JVC BUS input/output control terminal L 13942296513 BUS SI JVC BUS data input terminal...
  • Page 31 B.DET Backup power supply detection input terminal (H:Stop mode) P.DET Main power off detection input terminal (H:HALT mode) BUS INT JVC BUS comunication start squeeze input terminal MP3 REQ CD MP3 request signal input terminal VSS0 Connect to GND VDD1 Connect to 3.3V...
  • Page 32 KD-SX980 3 7 63 1515 0 TC94A02F-005 (IC651) : DSP AD10 VDDT LRCKiA BCKiA SDi0 L 13942296513 AD13 VDDT AD14 /MiCK AD16 MiDio AD15 MiMD /RESET General Input Port Timing Generator u163 1-32 http://www.xiaoyu163.com...
  • Page 33 KD-SX980 3 7 63 1515 0 3.Pin function (1/2) TC94A02F-005 Pin No. Symbol Function /RESET Hard reset input terminal(H:Normal operation L: Reset) MiMD Micon I/F mode select input terminal External SRAM address output 0 terminal External SRAM address output 1 terminal...
  • Page 34 KD-SX980 3 7 63 1515 0 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...
  • Page 35 KD-SX980 3 7 63 1515 0 HA13164A (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 EXT OUT...
  • Page 36 KD-SX980 3 7 63 1515 0 HD74HC126FP-X (IC801) : Buffer 1.Terminal layout 3.Pin function Input Output Note) H:High level L:Low level X:Irrelevant Z:Off(High-impedance) State a 3-state input 2.Block diagram Output Input Output Sample as Load Circuit 1 L 13942296513...
  • Page 37 KD-SX980 3 7 63 1515 0 HD74HCT126T-X : (IC503) Buffer 1.Terminal layout 3.Pin function INPUT OUTPUT H : High level L : Low level X : Irrelevant Off (Hhigh-impedance)state of a 3-stage output 2.Block diagram L 13942296513 u163 1-37...
  • Page 38 KD-SX980 3 7 63 1515 0 LC75873NW (IC601) : LCD driver 1.Pin layout 2.Block diagram VDD1 COMON SEGMENT DRIVER DRIVER VDD2 CLOCK SHIFT REGISTOR GENERATOR ADDRESS DETECTOR 3.Pin function Pin name Description Pin No. Segment outouts for displaying the display data...
  • Page 39 KD-SX980 3 7 63 1515 0 NJU7241F25-X (IC651) : Regulator 1.Pin layout 2.Block diagram Short protect GND 1 5 STB VIN 2 3 VOUT VIN 2 VOUT 3 4 NC STB 5 Vref GND 1 1 GND NJU7241F33-X (IC504) : Voltage regulator PIN FUNCTION 1.
  • Page 40 KD-SX980 3 7 63 1515 0 PCM1716E-X (IC571) : D/A converter 1. Pin layout 2. Block diagram Serial VoutL Low-pass Filter Input LBCK Mult-level EXTL 8X Oversampling DATA Delta-Sigma Digital Filter Low-pass VoutR Modulator Filter with ML/llS Function Controller...
  • Page 41 KD-SX980 3 7 63 1515 0 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 Programmable counter REG.
  • Page 42 KD-SX980 3 7 63 1515 0 SAA6579T-X (IC71) : RDS 1.Pin layout QUAL RDCL RDDA Vref OSCO OSCI TEST SCOUT MODE 2.Block diagram ANTI- 57 kHz OSCILATOR QUALITY BIT RECONSTRUCTION ALIASING BANDPASS GENERATOR FILTER FILTER (8th ORDER) DIVIDER BIPHASE...
  • Page 43 KD-SX980 3 7 63 1515 0 TDA7404D-X (IC161) : Carradio signal processor 1.Termnal layout 2..Block diagram OUTLF Mono Fader DiffinL OUTRF Mono Fader Diffgnd DiffinR OUTLR Mono Fader OUTRR Mono Fader SE1L SE1R L 13942296513 Mono Fader SE2L SE2R...
  • Page 44 KD-SX980 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 200203 (No.49709) http://www.xiaoyu163.com...

  • Page 45: Block Diagram

    KD-SX980 3 7 6 3 1 5 1 5 0 Block diagram OUTLF IC361 IC301 OUTRF INLF IC161 TU.L,TU.R FM/AM INLR POWER E.VOL IC601 IC571 VOUTL IC572 TUNER LINE AMP VA,VB RWSEL VOUTR VE,VF CD RF 24bit DAC CD LPF...
  • Page 46 KD-SX980 KD-SX980 3 7 6 3 1 5 1 5 0 Standard schematic diagrams D243 1SS133 Main amp section R244 C243 R243 0.047 IC301 LA47503 180k R245 C241 1/50 R242 R241 C242 22/16 Q241 2SD601A( R) QAU0258-001 QNB0100-002 R177...
  • Page 47 KD-SX980 3 7 6 3 1 5 1 5 0 RWSEL CD servo control section R585 C589 C587 4.7/35 C585 120P R613 R581 C611 R583 R611 R610 CD.L-CH 4.7/35 R614 R612 C610 C586 R582 C588 R584 CD.R-CH 120P C590 4.7/35...
  • Page 48 KD-SX980 KD-SX980 3 7 6 3 1 5 1 5 0 LCD & Key control section LCD1 1 3 9 4 2 2 9 6 5 1 3 IC602 RPM6938-SV4 ACC5V CN601 R660 QNZ0006-001 LCD1 REMOCON QLD0217-001 EN601 R661...
  • Page 49 KD-SX980 3 7 6 3 1 5 1 5 0 Printed circuit boards Main board (Forward side) Main board (Reverse side) Q976 C891 J801 Q977 C910 C910 D971 J321 D972 R902 R903 IC901 J321 R976 C321 IC901 R977 C851...
  • Page 50 KD-SX980 KD-SX980 3 7 6 3 1 5 1 5 0 Front board (Forward side) Front board (Reverse side) LCD1 S614 IC602 D651 R646 D620 R653 R651 D653 R623 D602 R652 D656 D641 R654 R624 D603 D605 D654 R633...
  • Page 51 KD-SX980 3 7 63 1515 0 PARTS LIST [ KD-SX980 ] * 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 52 KD-SX980 3 7 63 1515 0 Exploded view of general assembly and parts list Block No. L 13942296513 u163 http://www.xiaoyu163.com...
  • Page 53 KD-SX980 3 7 63 1515 0 Parts list (General assembly) Block No. M1MM Item Description Parts number Parts name Q'ty Area ------------ CD MECHA GE10043-001A TOP CHASSIS GE40135-001A EARTH PLATE GE30568-003A HEAT SINK GE30393-001A BOTTOM COVER INSULATOR FSMA3005-001 SCREW...
  • Page 54 KD-SX980 3 7 63 1515 0 Parts list (General assembly) Block No. M1MM Item Description Parts number Parts name Q'ty Area VKW3001-330 COMP.SPRING 1 FOR DETACH BUTTON GE10042-001A REAR COVER FSYH4036-078 SHEET 1 REAR COVER VKZ4777-001 MINI SCREW 3 FRONT+REAR...
  • Page 55 KD-SX980 3 7 63 1515 0 CD mechanism assembly and parts list Block No. TN-2001-1003 Grease TNG-87 L 13942296513 u163 http://www.xiaoyu163.com...
  • Page 56 KD-SX980 3 7 63 1515 0 Parts list (CD mechanism) Block No. MBMM Item Description Parts number Parts name Q'ty Area 30320101T FRAME 30320102T TOP COVER 30320109T DAMPER F 30320110T DAMPER R 303205501T CHASSIS RIVET A CHANGE P.RVT A...
  • Page 57 KD-SX980 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 30321107T LOADING GEAR 7...
  • Page 58 KD-SX980 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 BZ841 QAN0009-001Z BUZZER C 315 QERF1EM-475Z E CAPACITOR 4.7MF 20% 25V...
  • Page 59 KD-SX980 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 966 NCS31HJ-101X C CAPACITOR Q 241 2SD601A/R/-X TRANSISTOR C 967...
  • Page 60 KD-SX980 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 247 NRSA63J-184X MG RESISTOR R 766 NRSA63J-473X MG RESISTOR R 301...
  • Page 61 KD-SX980 3 7 63 1515 0 Electrical parts list (Mecha coutrol board) Block No. 02 Item Parts number Parts name Remarks Area Item Parts number Parts name Remarks Area C 501 NCB31AK-474X C CAPACITOR C 627 NCB31HK-103X C CAPACITOR...
  • Page 62 KD-SX980 3 7 63 1515 0 Electrical parts list (Mecha coutrol board) Block No. 02 Item Parts number Parts name Remarks Area Item Parts number Parts name Remarks Area IC504 NJU7241F33-X R 542 NRSA63J-101X MG RESISTOR IC571 PCM1716E-X R 543...
  • Page 63 KD-SX980 3 7 63 1515 0 Electrical parts list (Mecha coutrol board) Block No. 02 Item Parts number Parts name Remarks Area R 626 NRSA63J-474X MG RESISTOR R 627 NRSA63J-103X MG RESISTOR R 628 NRSA63J-225X MG RESISTOR R 629...
  • Page 64 KD-SX980 3 7 63 1515 0 Electrical parts list (Front board) Block No. 03 Item Parts number Parts name Remarks Area Item Parts number Parts name Remarks Area C 601 NBE20JM-475X TS E CAPACITOR R 621 NRSA02J-122X MG RESISTOR...
  • Page 65 KD-SX980 3 7 63 1515 0 < M E M O > L 13942296513 u163 3-15 http://www.xiaoyu163.com...
  • Page 66 KD-SX980 3 7 63 1515 0 Packing materials and accessories parts list Block No. Block No. A1~A9 L 13942296513 KIT:A10~A14 u163 3-16 http://www.xiaoyu163.com...
  • Page 67 TROUBLE SHEET(C LVT0770-003B MP3 MANUAL BT-52004-2 WARRANTY CARD 1 FOR C BT-51028-1 J=REGIST CAR 1 FOR J BT-20071B-S JVC CENTER LIST 1 FOR C A 10 VKZ4027-202 PLUG NUT L 13942296513 MOUNT BOLT A 11 VKH4871-001SS LOCK NUT A 12...

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