JVC KD-S891R Schematic Diagrams
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JVC KD-S891R Schematic Diagrams

JVC KD-S891R Schematic Diagrams

Cd receiver
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SCHEMATIC DIAGRAMS

Contents
Block diagram
Standard schematic diagrams
Printed circuit boards
CD RECEIVER
KD-S891R
CD-ROM No.SML200307
COPYRIGHT
2003 VICTOR COMPANY OF JAPAN, LTD.
Area suffix
E ----------- Continental Europe
EX --------------- Central Europe
2-1
2-2
2-5 to 7
No.49876SCH
2003/7

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Summary of Contents for JVC KD-S891R

  • Page 1: Schematic Diagrams

    SCHEMATIC DIAGRAMS CD RECEIVER KD-S891R CD-ROM No.SML200307 Area suffix E ----------- Continental Europe EX --------------- Central Europe Contents Block diagram Standard schematic diagrams Printed circuit boards 2-5 to 7 No.49876SCH COPYRIGHT 2003 VICTOR COMPANY OF JAPAN, LTD. 2003/7...

  • Page 2: Safety Precaution

    KD-S891R 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: Block Diagram

    KD-S891R Block diagram Front L Front R TU.L FM/AM TU.R J321 TUNER LINE OUT SW1,SW2,PSW Rear L AMVT Rear R SEEK/STOP FMVT SD/ST FM/AM OSC LM0,LM1 MONO TRO,FOO IC301 SPINDLE+ BUS0,BUS1 IC161 DMO,FMO IC31 OUTFL POWER SPINDLE- BUS2,BUS3 E.VOL POSITION SET...

  • Page 4: Standard Schematic Diagrams

    KD-S891R KD-S891R Standard schematic diagrams Main amplifier section R248 RB160M-30-X R244 D243 C243 R243 0.047 180k C241 R245 1/50 R242 R241 IC301 C242 22/16 LA4743K Q241 QAU0292-001 2SD601A/R/-X LEVEL R161 D240 C312 4.7u 220k 1SS355-X R312 0.33 OUTFL OUTRL 1/50 8.2K...
  • Page 5 KD-S891R CD servo control section R504 R502 8.2k R586 6.8K FEED- C589 FEED- R503 4.7k R581 R585 CD.R 47/10 C582 8.2k R584 270p FEED+ 4.7/25 FEED+ R506 C501 C581 8.2k 3300p Q501 AOUTR- C588 R582 AOUTR+ 8.2k R583 8.2k 4.7/25...
  • Page 6 KD-S891R KD-S891R LCD & Key control section JS690 QSW0863-002 IC602 RPM6938-SV4 R672 R673 0.015 0.015 C614 C613 LCD1 DETACH VMC0335-001 QLD0256-001 CJ601 ACC5V REMOCON ENC1 ENC2 R675 DIMMER LCDCL LCDDA LCDCE KEY0 KEY1 KEY2 R663 R605 R604 R603 R601 KEY0 1.8K...
  • Page 7 KD-S891R Printed circuit boards Main board Forward side R904 IC901 J321 R321 Q341 L901 CN901 J801 D851 R331 Q321 R351 D901 C962 C961 C967 R341 C318 C311 C241 C964 C244 C881 C312 R164 R165 C314 R314 R313 C313 D891 R303...
  • Page 8 KD-S891R Main board Reverse side R971 R972 L901 D972 C911 D971 C321 J801 C341 D901 Q331 C318 CN901 Q351 C319 C241 R903 C311 D242 R242 C243 R246 R311 R245 C312 C881 R312 C301 C302 C166 C194 R161 R301 C316 Q782...
  • Page 9 KD-S891R Front board Forward side D622 D618 D619 S616 S613 S617 S601 JS690 LCD1 R601 D731 R646 R631 D609 S618 D610 R647 D732 R610 R608 S612 R602 S602 S610 D605 R604 D604 D603 D608 D607 D606 S607 R605 S604 S605...
  • Page 10 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.49876SCH)

  • Page 11: Table Of Contents

    SERVICE MANUAL CD RECEIVER 49876 2003 KD-S891R Area suffix E ----------- Continental Europe EX --------------- Central Europe TABLE OF CONTENTS PRECAUTION............... . . 1-3 SPECIFIC SERVICE INSTRUCTIONS .
  • Page 12 SPECIFICATION AUDIO Maximum Power Output Front 45 W per channel AMPLIFIER Rear 45 W per channel SECTION 17 W per channel into 4 Ω, 40 Hz to 20 000 Hz at no more Continuous Power Front Output (RMS) than 0.8% total harmonic distortion. 17 W per channel into 4 Ω, 40 Hz to 20 000 Hz at no more Rear than 0.8% total harmonic distortion.

  • Page 13: Precaution

    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 14 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 15: Specific Service Instructions

    SECTION 2 SPECIFIC SERVICE INSTRUCTIONS This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS. (No.49876)1-5...

  • Page 16: Disassembly

    SECTION 3 DISASSEMBLY Main body 3.1.1 Removing the front panel assembly Front panel assembly (See Fig.1) (1) Press the release button and remove the front panel as- sembly. Release button Fig.1 3.1.2 Removing the front chassis assembly (See Figs.2 to 3) •...
  • Page 17 3.1.3 Removing the heat sink (See Fig.4) (1) Remove the two screws B and screws C on the left side of the main body. Heat sink Fig.4 3.1.4 Removing the bottom cover (See Figs.5) • Prior to performing the following procedure, remove the front Bottom cover panel assembly, front chassis assembly and heat sink.
  • Page 18 3.1.6 Removing the main board Main board assembly (See Fig.7) • Prior to performing the following procedure, remove the front panel assembly, front chassis assembly, heat sink, bottom cover and rear bracket. (1) Remove the two screws G attaching the main board. (2) Disconnect the connector CN501 and remove the main...
  • Page 19 3.1.8 Removing the front board (See Figs.9 to 11) • Prior to performing the following procedure, remove the front panel assembly. (1) Remove the four screws J on the back side of the front pan- el assembly. (2) Release the fourteen joints g. (3) Release the joint h and take out the front board.
  • Page 20 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. Top cover Joints a Fig.1...
  • Page 21 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. (2) Solder the short-circuit point on the connector board.
  • Page 22 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 Fig.6 Tab c DET switch DET switch wire Tab c...
  • Page 23 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 24 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 25 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 26 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 27 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 28 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. to release from the link plate (joint t) and turn in the direction of the arrow to release the joint u.
  • Page 29 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 30 3.2.13 Removing the select arm R / link plate Link plate Joint r Joint c' (See Figs.27 and 28) Select arm R Joint b' • Prior to performing the following procedure, remove the top plate assembly. (1) Bring up the select arm R to release from the link plate (joint a') and turn as shown in the figure to release the two Joint b' joints b' and joint c'.
  • Page 31 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 32 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. The loading gear 6 and 7 come off the loading gear brack- (2) Pull out the loading gear 5.
  • Page 33 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 34 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 35: 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 36 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 Disc inserted Microprocessor commands commands 3.3V 3.3V Hi-Z TC94A14FA"38"...

  • Page 37: Trouble Shooting

    SECTION 5 TROUBLE SHOOTING Feed section Is the voltage output at Is the wiring for IC501 Is 3.3V present at IC501 IC541 pin "40" 5V or 0V? pin 27? pin "20"? Check CD 8V Check the vicinity of and 5V. IC541.
  • Page 38 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 power cord from the ac outlet. 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 39 (No.49876)1-29...
  • Page 40 VICTOR COMPANY OF JAPAN, LIMITED AV & MULTIMEDIA COMPANY MOBILE ENTERTAINMENT CATEGORY 10-1,1chome,Ohwatari-machi,Maebashi-city,371-8543,Japan (No.49876) Printed in Japan...

  • Page 41: Parts List

    PARTS LIST [ KD-S891R ] * All printed circuit boards and its assemblies are not available as service parts. Area suffix E------------ Continental Europe EX --------------- Central Europe - 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 42 Exploded view of general assmbly and parts list Block No.
  • Page 43 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 SCREW 2.6mm x 6mm(x2) QYSDST2604Z SCREW 2.6mm x 4mm(x3)
  • Page 44 CD mechanism assembly and parts list Block No. Grease TN-2001-1011 TNG-87 GP-501MK CFD-005Z GP-501A...
  • Page 45 CD mechanism Block No. [M][P][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 30320502T CLAMPER ARM 30320503T...

  • Page 46: Electrical Parts List

    Electrical parts list Main board  Symbol No. Part No. Part Name Description Local Block No. [0][1][0][0] D704 UDZS6.2B-X Z DIODE  Symbol No. Part No. Part Name Description Local D705 UDZS6.2B-X Z DIODE D706 UDZS6.2B-X Z DIODE D707 UDZS6.2B-X Z DIODE IC31 TB2118F-X...
  • Page 47  Symbol No.  Symbol No. Part No. Part Name Description Local Part No. Part Name Description Local C172 QEKJ1HM-105Z E CAPACITOR 1uF 50V M C524 NCB31HK-103X C CAPACITOR 0.01uF 50V K C174 NCB31HK-822X C CAPACITOR 8200pF 50V K C525 QEKJ1AM-107Z E CAPACITOR 100uF 10V M...
  • Page 48  Symbol No.  Symbol No. Part No. Part Name Description Local Part No. Part Name Description Local C902 QEKJ1HM-225Z E CAPACITOR 2.2uF 50V M R175 NRSA63J-473X MG RESISTOR 47kΩ 1/16W J C903 QEKJ1CM-476Z E CAPACITOR 47uF 16V M R181 NRSA63J-271X MG RESISTOR 270Ω...
  • Page 49  Symbol No.  Symbol No. Part No. Part Name Description Local Part No. Part Name Description Local R545 NRSA63J-103X MG RESISTOR 10kΩ 1/16W J R756 NRSA63J-473X MG RESISTOR 47kΩ 1/16W J R546 NRSA63J-0R0X MG RESISTOR 0Ω 1/16W J R757 NRSA63J-222X MG RESISTOR 2.2kΩ...
  • Page 50  Symbol No.  Symbol No. Part No. Part Name Description Local Part No. Part Name Description Local D644 UDZS5.1B-X Z DIODE S616 NSW0066-001X TACT SW D645 UDZS6.2B-X Z DIODE S617 NSW0066-001X TACT SW D731 NSPW310BS/BRS/ S618 NSW0066-001X TACT SW D732 NSPW310BS/BRS/ C601...
  • Page 51 <MEMO> 3-11...
  • Page 52 Packing materials and accessories parts list Block No. A2 A3 A4 A5 A6 A7 A8 KIT:A10 A11 A12 A13 A14 3-12...
  • Page 53 Packing and accessories Block No. [M][3][M][M]  Symbol No. Part No. Part Name Description Local ENG,GER,FRE,DU GET0136-001A INST BOOK S891 GET0136-002A INST BOOK SPA,ITA,POL,RUS SWE,DAN,FIN,GE S891 GET0136-003A INST BOOK ENG,GER,FRE,DU GET0136-004A INSTALL MANUAL S891 GET0136-005A INSTALL MANUAL SPA,ITA,POL,RUS SWE,DAN,FIN,GE S891 GET0136-006A INSTALL MANUAL S891...

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