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JVC KD-S20 Service Manual
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JVC KD-S20 Service Manual

JVC KD-S20 Service Manual

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3 7 63 1515 0
SERVICE MANUAL
1
2004
MA064
TE
L 13942296513
1
PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
2
SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
3
DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
4
ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-24
5
TROUBLE SHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-25
www
.
http://www.xiaoyu163.com
CD RECEIVER
KD-S20
S
COMPACT
DIGITAL AUDIO

TABLE OF CONTENTS

x
ao
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i
COPYRIGHT © 2004 VICTOR COMPANY OF JAPAN, LIMITED
http://www.xiaoyu163.com
8
Q Q
3
6 7
1 3
u163
.
2 9
9 4
2 8
1 5
0 5
Area Suffix
8
2 9
9 4
J ----- Northern America
m
co
9 9
2 8
9 9
No.MA064
2004/1

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Summary of Contents for JVC KD-S20

  • Page 1: Table Of Contents

    3 7 63 1515 0 SERVICE MANUAL CD RECEIVER MA064 2004 KD-S20 L 13942296513 Area Suffix COMPACT J ----- Northern America DIGITAL AUDIO TABLE OF CONTENTS PRECAUTION............... . . 1-3 SPECIFIC SERVICE INSTRUCTIONS .
  • Page 2 http://www.xiaoyu163.com 3 7 63 1515 0 SPECIFICATION AUDIO AMPLIFIER SECTION Maximum Power Output Front 45 W per channel Rear 45 W per channel 17 W per channel into 4 Ω, 40 Hz to 20 000 Hz at no more Continuous Power Output (RMS) Front than 0.8% total harmonic distortion.

  • Page 3: Precaution

    http://www.xiaoyu163.com 3 7 63 1515 0 SECTION 1 PRECAUTION 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. Please use enough caution not to see the beam directly or touch it in case of an adjustment or operation check.
  • Page 4 http://www.xiaoyu163.com 3 7 63 1515 0 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. 1.2.1 Grounding to prevent damage by static electricity Static electricity in the work area can destroy the optical pickup (laser diode) in devices such as CD players.

  • Page 5: Specific Service Instructions

    http://www.xiaoyu163.com 3 7 63 1515 0 SECTION 2 SPECIFIC SERVICE INSTRUCTIONS This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS. L 13942296513 u163 (No.MA064)1-5 http://www.xiaoyu163.com...

  • Page 6: Disassembly

    http://www.xiaoyu163.com 3 7 63 1515 0 SECTION 3 DISASSEMBLY Main body 3.1.1 Removing the front panel assembly (See Fig.1) (1) Push the detach button in the lower right part of the front panel assembly and remove the front panel assembly. Front panel assembly Detach button Fig.1...
  • Page 7 http://www.xiaoyu163.com 3 7 63 1515 0 3.1.4 Removing the side panel (See Fig.4) • Prior to performing the following procedure, remove the front panel assembly as required. (1) Remove the screw B and two screws C attaching the side panel on the left side of the main body, and remove the side panel.
  • Page 8 http://www.xiaoyu163.com 3 7 63 1515 0 3.1.7 Removing the CD mechanism assembly (See Fig. 7) • Prior to performing the following procedure, remove the front panel assembly, front chassis assembly, side panel, bottom cover, rear bracket, main board and CD mechanism board. (1) Remove the three screws H attaching the top chassis.
  • Page 9 http://www.xiaoyu163.com 3 7 63 1515 0 CD Mechanism Assembly 3.2.1 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 10 http://www.xiaoyu163.com 3 7 63 1515 0 3.2.2 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. (1) Remove the screw B fixing the connector board.
  • Page 11 http://www.xiaoyu163.com 3 7 63 1515 0 3.2.3 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. DET switch Connector board Pickup...
  • Page 12 http://www.xiaoyu163.com 3 7 63 1515 0 3.2.4 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 13 http://www.xiaoyu163.com 3 7 63 1515 0 3.2.5 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 14 http://www.xiaoyu163.com 3 7 63 1515 0 3.2.6 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 assembly in the direction of the arrow to remove it from the chassis rivet assembly.
  • Page 15 http://www.xiaoyu163.com 3 7 63 1515 0 3.2.7 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 16 http://www.xiaoyu163.com 3 7 63 1515 0 3.2.9 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 17 http://www.xiaoyu163.com 3 7 63 1515 0 3.2.11 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 18 http://www.xiaoyu163.com 3 7 63 1515 0 3.2.12 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 Joint v the shorter end of the select lock arm spring to the hook w on the top plate.
  • Page 19 http://www.xiaoyu163.com 3 7 63 1515 0 3.2.13 Removing the select arm R / link plate Joint c' Link plate Joint r (See Figs.27 and 28) Joint b' Select arm R • Prior to performing the following procedure, remove the top plate assembly.
  • Page 20 http://www.xiaoyu163.com 3 7 63 1515 0 3.2.15 Removing the loading roller assembly Loading roller assembly (See Figs.31 to 33) • Prior to performing the following procedure, remove the Roller guide clamper assembly and top plate assembly. spring (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 21 http://www.xiaoyu163.com 3 7 63 1515 0 3.2.16 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. (1) Remove the screw K attaching the loading gear bracket.
  • Page 22 http://www.xiaoyu163.com 3 7 63 1515 0 3.2.17 Removing the gears Joint p' (See Figs.37 to 40) • Prior to performing the following procedure, remove the top Change plate cover, chassis unit, top plate assembly and pickup unit. rivet assembly • Pull out the loading gear 3. (See Fig.35.) (1) Pull out the feed gear.
  • Page 23 http://www.xiaoyu163.com 3 7 63 1515 0 3.2.18 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 24: Adjustment

    Exclusive dummy load should be used for AM,and FM. For FM (7) Tracking offset meter dummy load,there is a loss of 6dB between SSG output and (8) Test Disc JVC :CTS-1000 antenna input.The loss of 6dB need not be considered since (9) Extension cable for check direct reading of figures are applied in this working standard.

  • Page 25: Trouble Shooting

    http://www.xiaoyu163.com 3 7 63 1515 0 SECTION 5 TROUBLE SHOOTING Feed section Is the voltage output at Is the wiring for IC521 Is 5V present at IC561 Check CD 8V. IC521 pin 40 5v or 0V pin 40 correct? pins 3,12 and 21? Check the vicinity of IC521.
  • Page 26 http://www.xiaoyu163.com 3 7 63 1515 0 Signal processing section Is the sound output from No sound from either Compare the L-ch and both channels (L, R)? channel. R-ch to locate the defctive point. Normal Is 9V present at IC161 pin Check the viciniyt of the IC901 audio power supply.
  • Page 27 http://www.xiaoyu163.com 3 7 63 1515 0 Maintenance of laser pickup 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 with a alcohol soaked cotton swab. power cord from the ac outlet.
  • Page 28 http://www.xiaoyu163.com 3 7 63 1515 0 16 PIN CORD DIAGRAM Black Green BL/WH Violet Blue Gray WH/BK White Yellow GN/BK VI/BK GY/BK 16 YL MEMORY 8 BK 7 RD 5 BL/WH REMOTE 4 WH L 13942296513 12 WH/BK 3 GN 11 GN/BK 2 VI 10 VI/BK...
  • Page 29 http://www.xiaoyu163.com 3 7 63 1515 0 L 13942296513 u163 (No.MA064)1-29 http://www.xiaoyu163.com...
  • Page 30 http://www.xiaoyu163.com 3 7 63 1515 0 L 13942296513 u163 VICTOR COMPANY OF JAPAN, LIMITED AV & MULTIMEDIA COMPANY MOBILE ENTERTAINMENT CATEGORY 10-1,1chome,Ohwatari-machi,Maebashi-city,371-8543,Japan (No.MA064) Printed in Japan http://www.xiaoyu163.com...
  • Page 31 3 7 63 1515 0 SCHEMATIC DIAGRAMS CD RECEIVER KD-S20 CD-ROM No.SML200401 Area suffix J -------------- Northern America L 13942296513 COMPACT DIGITAL AUDIO Contents Block diagram Standard schematic diagrams Printed circuit boards 2-9 to 11 u163 No.MA064SCH COPYRIGHT 2004 VICTOR COMPANY OF JAPAN, LTD.
  • Page 32 http://www.xiaoyu163.com 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 33 http://www.xiaoyu163.com 3 7 63 1515 0 < M E M O > L 13942296513 u163 http://www.xiaoyu163.com...
  • Page 34 http://www.xiaoyu163.com 3 7 63 1515 0 Block diagram SW1,SW2,PSW SPINDLE+ SPINDLE- POSITION SET FEED+ SWITCH FEED- TRACKING+ FEED+ TRACKING- LOAD&FEED FEED- FOCUS+ DMO,FOO IC561 MOTOR FOCUS- FMO,TRO IC521 SPINDLE+ BUS0 to BUS3 DRIVER DSP&DAC SPINDLE SPINDLE- BUCK,CCE,RST MOTOR TE,FE RFGC,RF SW1, SW2 SW1, SW2 RFRP,RFDC...
  • Page 35 http://www.xiaoyu163.com 3 7 63 1515 0 J321 LINE OUT OUTLF,OUTLR REAR L L-CH IC301 REAR R IC161 OUTRF,OUTRR R-CH FM/AM POWER E.VOLUME TUNER AMP. SD/ST,MONO SM,FM/AM SEEK/STOP IFC.CONT IFC,FM OSC FMEO,AMEO LEFT FRONT (+) CD.L LEFT FRONT (-) CD.R RIGHT FRONT (+) RIGHT FRONT (-) LEFT REAR (+) IC901...
  • Page 36 http://www.xiaoyu163.com Standard schematic diagrams 3 7 63 1515 0 Main amplifier section Q976 UN2111-X D976 1SS355-X QAU0281-001 QNB0100-002 MUTE.CONT 4.7u 3.9K 0.056 JBUS.INT R809 0.012 JBUS.SCK R810 2SC3661-X 2SC3661-X 2SB709A/R/-X 2SB624/4/-X 2.2/50 1SS355-X 0.001 JBUS.I/O JBUS.SO R803 JBUS.SI 2SD601A/R/-X 2.2K KRC102S-X 2SD601A/R/-X AMEO...
  • Page 37 http://www.xiaoyu163.com 3 7 63 1515 0 Q976 UN2111-X R331 R332 Q977 MUTE UN2111-X Q331 R335 2.2K C331 2SD1781K/QR/-X 100P Q321 R325 2.2K C321 2SD1781K/QR/-X 100P R321 R322 R351 R352 CJ321 D331 B801 R355 2.2K Q351 C351 QNN0519-001 100P 2SD1781K/QR/-X 1SS355-X R808 R806 D341...
  • Page 38 http://www.xiaoyu163.com 3 7 63 1515 0 CD servo control section R564 R562 8.2K R563 4.7K C561 47/10 R566 FEED- FEED+ 8.2K( 1/10) Q561 FEED- FEED- 2SB1322/RS/-T FEED+ FEED+ SPINDLE- D561 SPINDLE+ 1A3G-T1 R519 SPINDLE- SPINDLE- 150( 1/10W) SPINDLE+ SPINDLE+ FOCUS- FOCUS- VREF VREF...
  • Page 39 http://www.xiaoyu163.com 3 7 63 1515 0 R572 R575 C572 C573 R571 CD.L R574 R573 120P 4.7/25 C571 C574 820P 820P C581 C584 820P 820P R593 R591 C582 C583 R584 R581 R583 R585 120P 4.7/25 R582 CD.R C591 100/10 0.001 C557 C538 0.047 C537...
  • Page 40 http://www.xiaoyu163.com 3 7 63 1515 0 LCD & Key control section LCD1 QLD0254-001 L 13942296513 R605 R604 R603 R601 KEY0 1.8K 1.2K S605 S606 S604 S602 S601 R610 R609 R608 R607 R606 KEY1 2.7K 1.8K 1.2K R662 S612 S611 S610 S609 S608 S607...
  • Page 41 http://www.xiaoyu163.com 3 7 63 1515 0 QSW0793-001 JS690 IC602 RPM6938-SV4 R672 R671 R673 0.015 0.015 C612 C614 C613 4.7/6.3 VMC0335-001 ILL_10V CJ601 REMOCON ENC1 ENC2 R675 To CJ691 DIMMER (SHEET 1) LCD.CL LCD.DA LCD.CE KEY0 KEY1 KEY2 L 13942296513 R663 R651 IC601 PT6523LQ...
  • Page 42 http://www.xiaoyu163.com 3 7 63 1515 0 Printed circuit boards Main board Forward side C901 IC901 CJ321 R351 Q351 Q341 Q331 L901 CJ322 Q321 CN901 B302 C303 C304 C316 D901 B303 R902 C315 C913 R331 R341 D907 R901 C903 C906 R325 R335 C904 R193...
  • Page 43 http://www.xiaoyu163.com 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 R321 C908 R185 Q891...
  • Page 44 http://www.xiaoyu163.com 3 7 63 1515 0 Front board Reverse side Forward side Q641 R648 D620 R612 R613 D615 D616 R637 R641 D617 R657 R640 C602 R659 R660 IC602 D621 R603 L 13942296513 R606 R643 R642 R609 IC602 S615 D611 R671 C612 C613 R674...
  • Page 45 http://www.xiaoyu163.com 3 7 63 1515 0 < M E M O > L 13942296513 u163 http://www.xiaoyu163.com...
  • Page 46 http://www.xiaoyu163.com 3 7 63 1515 0 L 13942296513 u163 VICTOR COMPANY OF JAPAN, LIMITED AV & MULTIMEDIA COMPANY MOBILE ENTERTAINMENT CATEGORY 10-1,1chome,Ohwatari-machi,Maebashi-city,371-8543,Japan Printed in Japan (No.MA064SCH) http://www.xiaoyu163.com...
  • Page 47 3 7 63 1515 0 PARTS LIST [ KD-S20 ] * 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- 4 CD mechanism assembly and parts list (Block No.MB)
  • Page 48 http://www.xiaoyu163.com 3 7 63 1515 0 Exploded view of general assmbly and parts list Block No. L 13942296513 u163 http://www.xiaoyu163.com...
  • Page 49 http://www.xiaoyu163.com 3 7 63 1515 0 General assembly Block No. [M][1][M][M]  Symbol No. Part No. Part Name Description Local GE10043-210A TOP CHASSIS GE40135-001A EARTH PLATE GE30938-003A SIDE PANEL GE30393-002A BOTTOM COVER FSMA3004-203 INSULATOR QYSDST2604Z SCREW 2.6mm x 4mm(x3) FSKZ4005-001 SCREW (x2) QYSDST2606Z...
  • Page 50 http://www.xiaoyu163.com 3 7 63 1515 0 CD mechanism assembly and parts list Block No. Grease TN-2001-1011 TNG-87 GP-501MK CFD-005Z GP-501A L 13942296513 u163 http://www.xiaoyu163.com...
  • Page 51 http://www.xiaoyu163.com 3 7 63 1515 0 CD mechanism Block No. [M][B][M][M]  Symbol No. Part No. Part Name Description Local 30320101T FRAME 30320102T TOP COVER 30320115T DANPER F 30320116T DANPER R 303205505T CHASSIS RIVET 303205503T CHANGE P. RVT A 303205301T CLAMPER ASS'Y 303205302T SPINDLE MOTOR A...
  • Page 52 http://www.xiaoyu163.com 3 7 63 1515 0 Electrical parts list Main board  Symbol No. Part No. Part Name Description Local Block No. [0][1][0][0] QEKJ1AM-227Z E CAPACITOR 220uF 10V M  Symbol No. Part No. Part Name Description Local NDC31HJ-470X C CAPACITOR 47pF 50V J NCB31EK-563X C CAPACITOR...
  • Page 53 http://www.xiaoyu163.com 3 7 63 1515 0  Symbol No.  Symbol No. Part No. Part Name Description Local Part No. Part Name Description Local C514 NDC31HJ-5R0X C CAPACITOR 5pF 50V J NRSA63J-470X MG RESISTOR 47Ω 1/16W J C521 NCB31HK-103X C CAPACITOR 0.01uF 50V K NRSA63J-102X MG RESISTOR...
  • Page 54 http://www.xiaoyu163.com 3 7 63 1515 0  Symbol No.  Symbol No. Part No. Part Name Description Local Part No. Part Name Description Local R524 NRSA63J-153X MG RESISTOR 15kΩ 1/16W J R748 NRSA63J-103X MG RESISTOR 10kΩ 1/16W J R525 NRSA63J-103X MG RESISTOR 10kΩ...
  • Page 55 http://www.xiaoyu163.com 3 7 63 1515 0  Symbol No. Part No. Part Name Description Local C611 NCB31HK-123X C CAPACITOR 0.012uF 50V K C612 NBE20JM-475X TA E CAPACITOR 4.7uF 6.3V M C613 NCB31HK-153X C CAPACITOR 0.015uF 50V K C614 NCB31HK-153X C CAPACITOR 0.015uF 50V K R601 NRSA63J-821X...
  • Page 56 http://www.xiaoyu163.com 3 7 63 1515 0 Packing materials and accessories parts list Block No. A1 A2 A3 A4 A5 A6 A18 L 13942296513 KIT: A7 A8 A9 A10 A11 u163 3-10 http://www.xiaoyu163.com...
  • Page 57 http://www.xiaoyu163.com 3 7 63 1515 0 Packing and accessories Block No. [M][3][M][M]  Symbol No. Part No. Part Name Description Local GET0217-001A INST BOOK ENG SPA FRE GET0217-002A INSTALL MANUAL GET0153-001A CAUTION SHEET LVT0717-001B TROUBLE SHEET(C BT-51018-3 WARRANTY CARD For J BT-51034-1 J=REGIST CARD VKZ4027-202...