JVC KW-XC858 Service Manual
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JVC KW-XC858 Service Manual

JVC KW-XC858 Service Manual

Cd/cassette receiver
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3 7 63 1515 0
SERVICE MANUAL
5
2004
MA089
TE
L 13942296513
1
Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
2
Specific Service Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
3
Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
4
Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-26
5
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-30
www
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CD/CASSETTE RECEIVER
KW-XC858

TABLE OF CONTENTS

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COPYRIGHT © 2004 VICTOR COMPANY OF JAPAN, LIMITED
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Area suffix
UN --------------------------Asean
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No.MA089
9 9
9 9
2004/5

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Summary of Contents for JVC KW-XC858

  • Page 1 3 7 63 1515 0 SERVICE MANUAL CD/CASSETTE RECEIVER MA089 2004 KW-XC858 Area suffix UN --------------------------Asean L 13942296513 TABLE OF CONTENTS PRECAUTIONS ............... 1-2 SPECIFIC SERVICE INSTRUCTIONS .

  • Page 2: Http://Www.xiaoyu163.Com

    http://www.xiaoyu163.com SECTION 1 3 7 63 1515 0 PRECAUTIONS 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 3 http://www.xiaoyu163.com Preventing static electricity 3 7 63 1515 0 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 4 http://www.xiaoyu163.com Important for laser products 3 7 63 1515 0 5.CAUTION : If safety switches malfunction, the laser is able 1.CLASS 1 LASER PRODUCT to function. 2.DANGER : Invisible laser radiation when open and inter 6.CAUTION : Use of controls, adjustments or performance of lock failed or defeated.

  • Page 5: Specific Service Instructions

    http://www.xiaoyu163.com SECTION 2 3 7 63 1515 0 SPECIFIC SERVICE INSTRUCTIONS This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS. L 13942296513 u163 (No.MA089)1-5 http://www.xiaoyu163.com...

  • Page 6: Table Of Contents

    http://www.xiaoyu163.com SECTION 3 3 7 63 1515 0 DISASSEMBLY Main body section 3.1.1 Removing the front panel assembly (See Figs.1 and 2) (1) From the both side of the main body, remove the four Front panel assembly screws A attaching the front panel assembly. (See Figs.1 and 2.) (2) Release the four joints a and remove the front panel as- sembly in the direction of the arrow.
  • Page 7 http://www.xiaoyu163.com 3.1.4 Removing the top chassis assembly and bottom chassis assembly 3 7 63 1515 0 (See Figs.5 to 7) • Prior to performing the following procedures, remove the front CN702 panel assembly, rear bracket and heat sink. (1) From the back side of the main body, disconnect the card wire from the connector CN702 on the main board.
  • Page 8 http://www.xiaoyu163.com 3.1.5 Removing the main board 3 7 63 1515 0 (See Fig.8) • Prior to performing the following procedures, remove the front Main board Top chassis assembly panel assembly, rear bracket, heat sink, top chassis assembly CN601 and bottom chassis assembly. (1) From the bottom side of the top chassis assembly, remove the three screws H attaching the main board.
  • Page 9 http://www.xiaoyu163.com 3.1.7 Removing the changer control board 3 7 63 1515 0 (See Figs.10 and 11) • Prior to performing the following procedures, remove the front Changer control board CN972 panel assembly, rear bracket, heat sink, top chassis assembly and bottom chassis assembly. (1) From the back side of the bottom chassis assembly, dis- connect the card wire from the connector CN972...
  • Page 10 http://www.xiaoyu163.com 3.1.9 Removing the cassette mechanism assembly 3 7 63 1515 0 (See Fig.13) • Prior to performing the following procedure, remove the front panel assembly, rear bracket, heat sink, bottom chassis as- sembly, changer control board and mecha control board. From the bottom side of the bottom chassis assembly, remove the four screws M attaching the cassette mechanism assembly to the bottom chassis assembly.
  • Page 11 http://www.xiaoyu163.com CD mechanism section 3 7 63 1515 0 3.2.1 Removing the CD mechanism control board (See Fig.1 and 2) (1) Unsolder the part a and b on the CD mechanism control Damper bracket CD mechanism assembly board. (2) Remove the stator fixing the CD mechanism control board and the damper bracket (To remove the stator smoothly, pick up the center part).
  • Page 12 http://www.xiaoyu163.com 3.2.2 Removing the loading motor 3 7 63 1515 0 (See Fig.3 to 5) • Rrior to performing the following procedure, remove the CD CD mechanism control board mechanism control board. (1) Remove the two springs f attaching the CD mechanism as- sembly and the front bracket.
  • Page 13 http://www.xiaoyu163.com 3.2.3 Removing the CD mechanism assembly 3 7 63 1515 0 (See Fig.1, 6 to 9) • Prior to performing the following procedure, remove the CD assembly CD mechanism mechanism control board and the front bracket (loading mo- Damper bracket tor).
  • Page 14 http://www.xiaoyu163.com 3.2.4 Removing the feed motor assembly 3 7 63 1515 0 (See Fig.10) • Prior to performing the following procedure, remove the CD FD screw Part i mechanism control board, the front bracket (loading motor) Feed motor assembly and the CD mechanism assembly. (1) Remove the two screws F and the feed motor assembly.
  • Page 15 http://www.xiaoyu163.com Cassette mechanism assembly 3 7 63 1515 0 REFERENCE: Prior to performing the following procedures, turn the mode gear on the bottom of the body until the respective part comes to the EJECT position (Refer to Fig.1). Mode gear Fig.1 3.3.1 Removing the cassette guide (See Fig.2)
  • Page 16 http://www.xiaoyu163.com 3.3.3 Removing the cassette hanger assembly / cassette holder 3 7 63 1515 0 (See Fig.4 to 7) (1) Check the mode is set to EJECT. Push down the front part Cassette holder assembly of the cassette holder and move in the direction of the ar- row to release the joint c.
  • Page 17 http://www.xiaoyu163.com 3.3.4 Removing the side bracket assembly 3 7 63 1515 0 Side bracket assembly (See Fig.8 to 10) Joint i (1) Remove the screw A attaching the side bracket assembly. (2) Detach the front side of the side bracket assembly upward and pull out forward to release the joint i and j in the rear.
  • Page 18 http://www.xiaoyu163.com 3.3.5 Removing the pinch arm (F) assembly 3 7 63 1515 0 (See Fig.11 and 12) (1) Remove the polywasher and pull out the pinch arm (F) as- sembly. (2) Remove the compulsion spring. 3.3.6 Removing the pinch arm (R) assembly (See Fig.11 and 12) (1) Remove the polywasher and pull out the pinch arm (R) as- sembly.
  • Page 19 http://www.xiaoyu163.com 3.3.8 Removing the head / tape guide 3 7 63 1515 0 Flywheel assembly (F) Belt (See Fig.16 and 17) REFERENCE: It is not necessary to remove the slide chassis assembly. (1) Remove the band attaching the wire to the head. (2) Remove the two screws B, the head and the head support spring.
  • Page 20 http://www.xiaoyu163.com 3.3.10 Disassembling the flywheel assembly (F) 3 7 63 1515 0 FFC pad (See Fig.19 and 20) (1) Push and turn counterclockwise the spring holder (F) to re- lease the three joints p on the bottom of the flywheel. (2) The spring holder (F), the TU spring and the friction gear play come off.
  • Page 21 http://www.xiaoyu163.com 3.3.13 Removing the gear base arm / gear base link assembly 3 7 63 1515 0 (See Fig.23 to 25) (1) Move the gear base arm in the direction of the arrow. Gear base arm (2) Insert a slotted screwdriver to the gear base spring under Joint t Joints s the gear base arm, and release the gear base arm upward...
  • Page 22 http://www.xiaoyu163.com 3.3.15 Removing the mode gear 3 7 63 1515 0 Mode gear Mode switch actuator (See Fig.26 and 29) (1) Remove the polywasher on the bottom and pull out the mode gear. 3.3.16 Removing the mode switch actuator (See Fig.26, 27 and 29) (1) Pull out the mode switch actuator at the bottom.
  • Page 23 http://www.xiaoyu163.com 3.3.19 Removing the gear base assembly / take up gear / reflector gear 3 7 63 1515 0 (See Fig.30 to 32) (1) Push in the pin d’ of the gear base assembly on the upper Slot e' side of the body and move the reflector gear toward the bottom, then pull out.
  • Page 24 http://www.xiaoyu163.com 3.3.21 Removing the side bracket assembly 3 7 63 1515 0 Side bracket assembly (See Fig.33 to 37) Boss g' (1) Remove the eject cam plate spring. (2) Push the joint f’ through the slot to remove the load rack downward.
  • Page 25 http://www.xiaoyu163.com 3.3.22 Removing the main motor assembly / sub motor assembly 3 7 63 1515 0 (See Fig.38 to 40) (1) Remove the belt at the bottom. Main motor (2) Remove the polywasher and pull out the mode gear. assembly (3) Pull out the reduction gear (B).

  • Page 26: Adjustment

    0dB (1µV,50Ω/open terminal) (7) Laser power meter(Reader:LP800102) (8) Prove for MD (Reader:LP8010-02) (9) Pre masterd disc (TGYS-1) (10)Test disc (JVC:CTS1000) Measuring conditions (Amplifier section) • Power supply voltage....DC14.4V (11V to 16V allowance) • Load impedance.... 4Ω (4Ω to 8Ω allowance) •...
  • Page 27 http://www.xiaoyu163.com Information for using a car audio service jig 3 7 63 1515 0 (1) We're advancing efforts to make our extension cords common for all car audio products. Please use this type of extension cord as follows. (2) As a U-shape type top cover is employed, this type of extension cord is needed to check operation of the mechanism assembly after disassembly.
  • Page 28 http://www.xiaoyu163.com Arrangement of adjusting & test points 3 7 63 1515 0 Cassette mechanism (Surface) Motor assembly Tape speed adjust Azimuth screw A (Forward) Playback head Azimuth screw B (Reverse) L 13942296513 Head section view Playback head Azimuth screw B Azimuth screw A (Reverse) (Forward)
  • Page 29 http://www.xiaoyu163.com 3 7 63 1515 0 Item Conditions Adjustment and Confirmation methods S.Values Adjust 1. Head azi- Test tape: Head height adjustment muth adjust- SCC-1659 Adjust the azimuth directly. When you adjust the height A line ment VT703 (10kHz) using a mirror tape, remove the cassette housing from the mechanism chassis.

  • Page 30: Troubleshooting

    http://www.xiaoyu163.com SECTION 5 3 7 63 1515 0 TROUBLESHOOTING Flow of functional operation untill TOC read (CD) Power ON When the laser diode correctly When the pickup correctly moves Set Function CD emits to the inner area of the disc Microprocessor $82 $81 Microprocessor...
  • Page 31 http://www.xiaoyu163.com Feed section 3 7 63 1515 0 Is the voltage output at Is the wiring for IC621 Is 3.3V present at IC621 pins IC621 pin "40"? pin "40"? "6","15","25","39" and "43"? Check the vicinity of Check Q661 or IC621 or IC621. CD 8V.
  • Page 32 http://www.xiaoyu163.com Maintenance of laser pickup 3 7 63 1515 0 Replacement of laser pickup (1) Cleaning the pick up lens Turn of the power switch and, disconnect the Before you replace the pick up, please try to clean the lens with a alcohol soaked cotton swab.
  • Page 33 http://www.xiaoyu163.com 16 PIN CORD DIAGRAM 3 7 63 1515 0 Black Green OR/WH Violet BL/WH Gray Blue WH White Yellow WH/BK Orange GN/BK VI/BK GY/BK MEMORY 16 YL 8 BK 7 RD 15 OR/WH 3 GN 11 GN/BK L 13942296513 2 VI 10 VI/BK 4 WH...
  • Page 34 http://www.xiaoyu163.com 3 7 63 1515 0 L 13942296513 u163 VICTOR COMPANY OF JAPAN, LIMITED AV & MULTIMEDIA COMPANY CAR ELECTRONICS CATEGORY 10-1,1chome,Ohwatari-machi,Maebashi-city,371-8543,Japan (No.MA089) Printed in Japan http://www.xiaoyu163.com...

  • Page 35: Schematic Diagrams

    3 7 63 1515 0 SCHEMATIC DIAGRAMS CD/CASSETTE RECEIVER KW-XC858 CD-ROM No.SML200405 Area suffix UN --------------------------Asean L 13942296513 Contents Block diagram u163 Standard schematic diagrams 2-2 to 4 Printed circuit boards 2-5 to 6 No.MA089SCH COPYRIGHT 2004 VICTOR COMPANY OF JAPAN, LTD.

  • Page 36: Safety Precaution

    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 37: Block Diagram

    ILL,MEMORY BUS_I/O FOCUS+ BUS_SCK FOCUS- BUS INT IC761 SI/SO TRACKING+ IC701 IC791 JVC BUS TRACKING- FL display and switch section SPINDLE+ RESET AUXL SPINDLE- AUXR AUX IN MUTE-OUT LOADING+ 1 3 9 4 2 2 9 6 5 1 3...
  • Page 38 http://www.xiaoyu163.com Standard schematic diagrams 3 7 6 3 1 5 1 5 0 Main section QAU0223-001 R291 4.7k C291 CH-Rch 1/50 C201 IC951 R203 R201 R271 TAPE-Rch C272 1/50 R221 M61508FP-X 1/50 IC901 R241 CD-Rch C242 LA4743K 1/50 TUNER-Rch C202 R204 R202 1/50...
  • Page 39 http://www.xiaoyu163.com FL display and CD servo control section 3 7 6 3 1 5 1 5 0 R252 CD-Rch R251 C253 C252 4.7/25 R253 R-CH 120p C663 C612 R613 220/10 D691 Q691 C662 R694 2SD601A/RS/-X 0.01 IC661 R614 R612 FAN8037 MA152WK-X R611 CDRW...
  • Page 40 http://www.xiaoyu163.com 3 7 6 3 1 5 1 5 0 Head amplifier section IC402 LB1641 CN403 QGF1219F1-10 C425 0.01 Q403 2SB1322/RS/-T C424 R424 R425 2.2k R426 Q402 R401 DTC114EKA-X R448 100k IC432 R417 IC-PST9333U-X R420 Q401 R443 X431 C411 2.2K 0.015 R450 R449...
  • Page 41 http://www.xiaoyu163.com 3 7 6 3 1 5 1 5 0 Printed circuit boards Main board Forward side Reverse side (Main board) (Main board) L911 IC911 IC911 CN911 Q914 R161 R261 R162 R262 CN951 CN951 CN702 R926 R922 CN702 C917 C783 C927 B231 R927...
  • Page 42 http://www.xiaoyu163.com 3 7 6 3 1 5 1 5 0 Front board Mecha control board Forward side Forward side C406 VR402 D522 VR401 C410 C409 (LCD board) IC401 C411 C438 S533 R421 R482 C461 L421 R411 R484 R410 D561 D562 D521 C413 D529...
  • Page 43 http://www.xiaoyu163.com 3 7 63 1515 0 < M E M O > L 13942296513 u163 http://www.xiaoyu163.com...
  • Page 44 http://www.xiaoyu163.com 3 7 63 1515 0 L 13942296513 u163 VICTOR COMPANY OF JAPAN, LIMITED AV & MULTIMEDIA COMPANY CAR ELECTRONICS CATEGORY 10-1,1chome,Ohwatari-machi,Maebashi-city,371-8543,Japan Printed in Japan (No.MA089SCH) http://www.xiaoyu163.com...

  • Page 45: Parts List

    3 7 63 1515 0 PARTS LIST [ KW-XC858 ] * All printed circuit boards and its assemblies are not available as service parts. Area suffix UN ----------------------------Asean 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 46 http://www.xiaoyu163.com 3 7 63 1515 0 Exploded view of general assembly and parts list Block No. CD Mechanism L 13942296513 board Cassette Me Switch board u163 http://www.xiaoyu163.com...
  • Page 47 http://www.xiaoyu163.com 3 7 63 1515 0 Mecha control board Main board L 13942296513 Cassette Mechanism changer control board Switch board u163 http://www.xiaoyu163.com...
  • Page 48 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  QYSDST2004Z SCREW 2mm x 4mm LV40847-002A SPACER LV21157-001A MECHA BKT(CA) QYSDST2604Z SCREW 2.6mm x 4mm QYSDST2604Z SCREW 2.6mm x 4mm(x4) FSYH4036-050 SPACER LV10611-004A...
  • Page 49 http://www.xiaoyu163.com 3 7 63 1515 0 CD mechanism assembly and parts list Block No. Grease TN-CCD1001Z-138S G-31SA G-31SA(Bottom side) RX-405 L 13942296513 u163 106 29 http://www.xiaoyu163.com...
  • Page 50 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  30310101T FRAME 30310103T DANPER PIN (x2) 30310107T UPPER PL 30310108T SEL STOP PL 30310142T SEL ARM (L)L 30310143T SEL ARM (R)L 30310145T S ARM SPRING(L) (x2)
  • Page 51 http://www.xiaoyu163.com 3 7 63 1515 0 Symbol No. Part No. Part Name Description Local  303105310T FEED MO ASSY 303105311T SPINDLE MO ASSY 303105312T FEED SCREW ASSY 303111301T LDG MOTOR ASSY 303111302T RDG RLR SFT ASY 303105502T T.T.BASE ASSY L 13942296513 u163 http://www.xiaoyu163.com...
  • Page 52 http://www.xiaoyu163.com 3 7 63 1515 0 Cassette mechanism assembly and parts list Block No. CDS-802JE3 L 13942296513 u163 http://www.xiaoyu163.com...
  • Page 53 http://www.xiaoyu163.com 3 7 63 1515 0 Cassette mechanism Block No. [M][P][M][M] Symbol No. Part No. Part Name Description Local  X-0802-1009S MAIN CHASSIS AS X-0802-1002S SLIDE CHASSIS A X-0802-1003S SIDE BKT ASSY X-0802-1004S CASSETTE HANGER X-0802-1005S PINCH ARM F ASS X-0802-1006S PINCH ARM R ASS X-0802-1007S...
  • Page 54 http://www.xiaoyu163.com 3 7 63 1515 0 Symbol No. Part No. Part Name Description Local  2-1031-7030-C2S SCREW (x2) L 13942296513 u163 3-10 http://www.xiaoyu163.com...
  • Page 55 http://www.xiaoyu163.com 3 7 63 1515 0 Grease point 1/2 FG-84M MEA-512R MEN-223 SW-902 CFD-409 CFD-250H EP-56 SW-474B L 13942296513 u163 3-11 http://www.xiaoyu163.com...
  • Page 56 http://www.xiaoyu163.com 3 7 63 1515 0 Grease point 2/2 L 13942296513 u163 3-12 http://www.xiaoyu163.com...
  • Page 57 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] NCB31HK-102X C CAPACITOR 1000pF 50V K  Symbol No. Part No. Part Name Description Local NCB31HK-103X C CAPACITOR 0.01uF 50V K NCB31HK-103X C CAPACITOR...
  • Page 58 http://www.xiaoyu163.com 3 7 63 1515 0  Symbol No. Part No. Part Name Description Local  Symbol No. Part No. Part Name Description Local C613 NCB31HK-103X C CAPACITOR 0.01uF 50V K C943 NCB31HK-103X C CAPACITOR 0.01uF 50V K C614 NDC31HJ-5R0X C CAPACITOR 5pF 50V J C944...
  • Page 59 http://www.xiaoyu163.com 3 7 63 1515 0  Symbol No. Part No. Part Name Description Local  Symbol No. Part No. Part Name Description Local R182 NRSA63J-102X MG RESISTOR 1kΩ 1/16W J R676 NRSA63J-333X MG RESISTOR 33kΩ 1/16W J R191 NRSA63J-472X MG RESISTOR 4.7kΩ...

  • Page 60: Front Board

    http://www.xiaoyu163.com 3 7 63 1515 0  Symbol No. Part No. Part Name Description Local  Symbol No. Part No. Part Name Description Local R907 NRSA63J-473X MG RESISTOR 47kΩ 1/16W J D529 SML-310PT/KL/-X R908 NRSA63J-0R0X MG RESISTOR 0Ω 1/16W J D530 SML-310PT/KL/-X R911...
  • Page 61 http://www.xiaoyu163.com 3 7 63 1515 0  Symbol No. Part No. Part Name Description Local  Symbol No. Part No. Part Name Description Local R551 NRSA63J-621X MG RESISTOR 620Ω 1/16W J IC461 HD74HC126FP-X R552 NRSA63J-621X MG RESISTOR 620Ω 1/16W J R553 NRSA63J-821X MG RESISTOR...
  • Page 62 http://www.xiaoyu163.com 3 7 63 1515 0  Symbol No. Part No. Part Name Description Local R446 NRSA63J-473X MG RESISTOR 47kΩ 1/16W J R447 NRSA63J-473X MG RESISTOR 47kΩ 1/16W J R449 NRSA63J-103X MG RESISTOR 10kΩ 1/16W J R450 NRSA63J-473X MG RESISTOR 47kΩ...
  • Page 63 http://www.xiaoyu163.com 3 7 63 1515 0 Packing materials and accessories parts list Block No. L 13942296513 Packing and Accessories Block No. [M][3][M][M]  Symbol No. Part No. Part Name Description Local QYSDSP5008Z SCREW M5 x 8mm(x6)  QAM0397-003 CAR CABLE RM-RK31 REMOCON UNIT ------------...

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