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JVC KD-SV3000 Service Manual
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JVC KD-SV3000 Service Manual

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SERVICE MANUAL
6
2003
49837
1
Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
2
Disassembly Method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
3
Adjustment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-24
4
Description Of Major Ics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-27
COPYRIGHT © 2003 VICTOR COMPANY OF JAPAN, LIMITED
VCD/CD RECEIVER
KD-SV3000
ATT
CD
FM/AM
EQ
UP
VOL
DOWN
VIDEO CD
ENTER
PB C
RETURN
1
2
3
4
5
6
OSD
7
8
9
AUDIO
0

TABLE OF CONTENTS

Area Suffix
U --------------------- Other Areas
No.49837
2003/6

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  • Page 1 SERVICE MANUAL VCD/CD RECEIVER 49837 2003 KD-SV3000 Area Suffix U --------------------- Other Areas FM/AM DOWN VIDEO CD ENTER PB C RETURN AUDIO TABLE OF CONTENTS Precautions ................1-3 Disassembly method .
  • Page 2 SPECIFICATION AUDIO AMPLIFIER Maximum Power Front 50 W per channel SECTION Output Rear 50 W per channel 19 W per channel into 4 Ω 40 Hz to 20 000 Hz Continuous Power Front Output (RMS): at no more than 0.8% total harmonic distortion. 19 W per channel into 4 Ω...

  • Page 3: Precautions

    SECTION 1 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 4 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: Disassembly Method

    SECTION 2 Disassembly method Main body 2.1.1 Removing the front panel assembly Front panel assembly (See Fig.1) (1) Push the release button in the lower right part of the front panel assembly and remove the front panel assembly. Release button Fig.1 2.1.2 Removing the bottom cover (See Fig.2)
  • Page 6 2.1.4 Removing the heat sink (See Fig.4) • Prior to performing the following procedure, remove the front panel assembly as required. (1) Remove the two screws B and two screws C attaching the heat sink on the left side of the main body, and remove the heat sink.
  • Page 7 2.1.7 Removing the VCD/CD mechanism board (See Fig. 7) • Prior to performing the following procedure, remove the front panel assembly, front chassis assembly, heat sink, bottom cover, rear bracket and main board. Joint f (1) Remove the five screws H attaching the VCD/CD mecha- nism board.

  • Page 8: Release The Thirteen Joints G. (See Fig

    2.1.9 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 K on the back side of the front panel assembly. (See Fig.9.) (2) Release the thirteen joints g. (See Fig.10.) (3) Release the joint h and take out the front board.
  • Page 9 CD Mechanism section 2.2.1 Removing the top cover (See Figs.1 and 2) (1) Remove the four 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 10 2.2.2 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 pickup.
  • Page 11 2.2.3 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. switch Connector board Pickup Fig.6 Tab c DET switch DET switch wire Tab c...
  • Page 12 2.2.4 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 2.2.5 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 2.2.6 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 as- sembly in the direction of the arrow to remove it from the chassis rivet assembly.
  • Page 15 2.2.7 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 the pu.
  • Page 16 2.2.9 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 2.2.11 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 18 2.2.12 Reassembling the mode sw. / select lock arm Select lock arm spring (See Figs.24 to 26) REFERENCE: Hook w 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 2.2.13 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. (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 20 2.2.15 Removing the loading roller assembly (See Figs.31 to 33) Loading roller assembly • 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 2.2.16 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 22 2.2.17 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 2.2.18 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 Service mode Operation method Insert the test disc (Note) If "SUB 000" and "VCD 000" are indicated on the LCD, "TOC read" starts these operations are required. Press the [CD], [SEL] and [POWER] keys simultaneously for 2 seconds. "VERSION" is indicated on the LCD.
  • Page 26 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 27: Description Of Major Ics

    SECTION 4 Description of major ICs AT27C020-70JCU5 (IC102) : 2M-bit (256K x 8) OTP EPROM • Pin Layout • Block Diagram DATA OUTPUTS O0 - O7 OUTPUT OE,CE AND BUFFERS PROGRAM LOGIC Y DECODER Y-GATING A0 - A17 CELL MATRIX ADDRESS X DECODER INPUTS...
  • Page 28 ES3880FM (IC101) : Video CD processor • Pin Layout • Block Diagram 32-Bit RISC Processor 8KB cache On-Screan Display Gateway and DMA Controller Transport Controller Interface Parser Huffman Decoder DRAM Serial Audio Interface Interface Video Processor • Pin function Pin No. Symbol Descriptions 2.85V power supply.
  • Page 29 Pin No. Symbol Descriptions LWR# RISC interface write enable (active-low). LOE# RISC interface output enable (active-low). 65~67 LCS[3,1,0]# RISC interface chip select (active-low). 68~79 LA[0:17] RISC interface address. Ground. 5.0V power supply. 82~87 LA[0:17] RISC interface address. ACLK Master clock for external audio DAC (8.192MHz, 11.2896MHz, 12.288MHz, 16.9344MHz, and 18.432MHz).
  • Page 30 ES3883F(IC104):VCD Companion chip • Pin function • Blockdiagram CD-ROM Controller Remote Interrupt Remote CD ROM Control Control receiver Audio DAC Speakers Vista ES3880 (Video CD) Television NTSC/PAL Video Echo/Surround/Vocal Assist Preamp Mic 1 Volume Control Preamp DRAM Mic 2 Volume Control Panel Driver •...
  • Page 31 Pin No. Symbol Function Dual-purpose pin RWS is the audio frame sync. SEL_PLL1 Pins SEL_PLL[1.0] select the PLL clock frequency for the DCLK output. SEL_PLL1 SEL_PLL0 DCLK Bypass PLL(input mode) 27 MHz(output mode) 32.4 MHz(output mode) 40.5 MHz(output mode) RSTOUT_B Reset output(active-low).
  • Page 32 AN22000A (IC601) : RF & SERVO AMP • Terminal layout • Pin function Symbol I/O Function I APC Amp. input terminal O APC Amp. output terminal - Power supply terminal I RF adder Amp. inverting input terminal RFOUT O RF adder Amp. output terminal RFIN I AGC input terminal CAGC...
  • Page 33 GLT44016-35J4-X (IC103) : Dram • Pin layout • Pin function Pin Name Function Address inpits Row address strobe UCAS Columu address strobe / upperbyte control LCAS Columu address strobe / lower byte control Write enable Output enable LCAS UCAS Dara inputs / outputs +5V power supply Ground No connection...
  • Page 34 LA47505 (IC321) : Power amp. • Terminal layout Protective circuit Stand by Switch Ripple Mute Filter circuit protective circuit Muting & On Time Control Circuit 1-34 (No.49837)
  • Page 35 • Terminal layout • Pin function Pin No. Symbol Function AC CONT1 Header of IC GND1 Power GND OUTFR- Outpur(-) for front Rch STBY Stand by input OUTFR+ Output (+) for front Rch Vcc1/2 Power input OUTRR- Output (-) for rear Rch GND2 Power GND OUTRR+...
  • Page 36 4.10 LA6589H-X (IC501) : BTL driver • Pin layout & Block diagram VIN1-A VIN1 VIN1_SW H : OP-AMP_A L : OP-AMP_B VIN1+A VIN1-B VCCP1 VIN1+B VO1+ S-GND Signal system VO1- VIN1-SW It is ON/OFF as for all outputs. H : ON VO2+ MUTE MUTE...
  • Page 37 • Pin function Pin No. Symbol Function VIN1-A CH1 input AMP_A reversing input VIN1+A CH1 input AMP_A non-reversing input VCCP1 CH1 and CH2 power steps power supply VO1+ CH1 Output terminal (+) VO1- CH1 Output terminal (-) VO2+ CH2 Output terminal (+) VO2- CH2 Output terminal (-) VO3+...
  • Page 38 4.12 HA13164A (IC901) : Regulator • Terminal layout 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 • Block diagram 100u 0.1u BATT.DET OUT ANT OUT Surge Protector 0.1u EXT OUT COMPOUT BIAS 0.1u VDD OUT ANT CTRL 0.1u...
  • Page 39 4.13 MN101C30ACK1 (IC251) : Unit micon • Pin Layout • Pin function Pin No. Symbol Function Pin No. Symbol Function Not connect /SW1, /SW2 SW1,SW2 input BLKCK SubQ. blk. clk /SW3 Connect to ground Ground PCHKCD Connect to ground PCHKVCD Connect to ground 30,31 Ground...
  • Page 40 4.15 MN6627482WA (IC651) : DSP & DAC • Pin layout 20 ~ 41 ~ • Block diagram AVSS1 LRCKIN(MSEL) 8TIMES AVDD1 BCLK(SSEL) DIGITAL OVER SAMPUNC OUTR SRDATAIN DEEMPHSIS 1BIT DIGITAL FILTER (PSEL) LOGIC IOSEL CLVS BLKCK OUTL CLDCK SBCK SUBC DEMPH RESY FLAG6(RESY)
  • Page 41 • Pin function Pin No. Symbol Function Pin No. Symbol Function LDON Laser ON signal output (H:on) BCLK Not used PLLF2 Not used LRCK Not used TOFS Tracking error shunt signal output SRDATA Not used (H:shunt) DVDD1 Power supply (Digital) WVEL Not used DVSS1...
  • Page 42 4.16 NJM78M05FA (IC931) : Regulator • Terminal layout 1.INPUT 2.GND 3.OUTPUT • Block diagram INPUT OUTPUT 4.17 RT9161 / A-27CG-X (IC105) : Regulator • Pin layout • Block diagram VOUT Error Amp VOUT 1.2V (TAB) Reference • Pin function Pin Name Function VOUT Output Voltage...
  • Page 43 4.18 PT6523LQ (IC601) : LCD driver • Pin layout • Block diagram COMMON SEGMENT DRIVER & LATCH DRIVER CLOCK GENERATOR SHIFT REGISTER ADDRESS DETECTOR • Piin function Pin No. Pin Name Description 1~ 52 SG1 ~ SG52 Segment Output Pins 53~55 COM1 ~ COM3 Common Driver Output Pins...
  • Page 44 4.19 UPD178078GF-642 (IC801) : System CPU • Pin Layout • Pin function Pin No. Symbol Function 1 to 8 Not connect E.VOL.DATA_OUT E.VOLUME data output E.VOL.SCK E.VOLUME clock output Not connect LCD SO LCD data output LCD SCK LCD driver clock output MECHA POWER Linked with MECHA ON LCD CE...
  • Page 45 Pin No. Symbol Function VIDEO ON/OFF L: VIDEO OFF, H: VIDEO ON BAND Tuner receive band switching signal (H: FM, L: AM) Not connect RXD0 For flash ROM writing / UART(VCD status input) TXD0 For flash ROM writing / UART(VCD command output) SD/ST Station detection / FM stereo input /MONO...
  • Page 46 4.21 TEA6320T-X (IC301) : E.volume • Pin layout OUTRR OUTLR OUTRF OUTLF Vref MUTE CD-CH TAPE TUNER • Block diagram VOLUME 2 MUTE 0 to 55 dB FUNCTION BALANCE ZERO CROSS FENDER REAR POWER DETECTOR SUPPLY VOLUME 1 BASS TREBLE +20 to -31 dB VOLUME 2 LEFT...
  • Page 47 (No.49837)1-47...
  • Page 48 VICTOR COMPANY OF JAPAN, LIMITED AV & MULTIMEDIA COMPANY MOBILE ENTERTAINMENT CATEGORY 10-1,1chome,Ohwatari-machi,Maebashi-city,371-8543,Japan (No.49837) Printed in Japan...

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