JVC KD-SC800R Service Manual

Cd receiver

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Instructions manual (122 pages)

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Page 1 KD-SC800R SERVICE MANUAL CD RECEIVER 49820 2003 KD-SC800R Area Suffix COMPACT E ------------ Continental Europe DIGITAL AUDIO EX --------------- Central Europe TABLE OF CONTENTS Important Safety Precautions ............1-2 Disassembly method .
Page 2: Important Safety Precautions
KD-SC800R SECTION 1 Important Safety Precautions 1.1 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 KD-SC800R 1.2 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.
Page 4: Disassembly Method
KD-SC800R SECTION 2 Disassembly method 2.1 Main body 2.1.1 Removing the front panel assembly Front panel assembly (See Fig.1) (1) Push the detach button in the lower left part of the front panel assembly and remove the front panel assembly in the direction of the arrow.
Page 5 KD-SC800R 2.1.3 Removing the heat sink (See Fig.5) (1) Remove the two screws C and one screws D on the left side of the main body. Heat sink Fig.5 2.1.4 Removing the bottom cover (See Figs.6 and 7) • Prior to performing the following procedure, remove the front Joint d panel assembly, front chassis assembly and heat sink.
Page 6 KD-SC800R 2.1.5 Removing the rear bracket (See Fig.8) Rear bracket • Prior to performing the following procedure, remove the front panel assembly, front chassis assembly, heat sink and bottom cover. (1) Remove the three screws E, one screws F and two screws G on the back of the body.
Page 7 KD-SC800R 2.1.8 Removing the front board (See Figs.11 to 13) • 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. (2) Release the ten joints g.
Page 8 KD-SC800R 2.2 CD Mechanism Assembly 2.2.1 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 9 KD-SC800R 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.
Page 10 KD-SC800R 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. DET switch Connector board Pickup Fig.6...
Page 11 KD-SC800R 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 12 KD-SC800R 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 13 KD-SC800R 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 assembly in the direction of the arrow to remove it from the chassis rivet assembly.
Page 14 KD-SC800R 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 15 KD-SC800R 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 16 KD-SC800R 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 17 KD-SC800R 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...
Page 18 KD-SC800R 2.2.13 Removing the select arm R / link plate Joint c' Link plate Joint r (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...
Page 19 KD-SC800R 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 20 KD-SC800R 2.2.16 Removing the loading gear 5, 6 and 7 (See Figs.35 and 36) Loading gear bracket • Prior to performing the following procedure, remove the top cover, chassis unit, pickup unit and top plate assembly. Loading gear 6 (1) Remove the screw K attaching the loading gear bracket.
Page 21: Pull Out The Loading Gear
KD-SC800R 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 22 KD-SC800R 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 23 KD-SC800R 2.3 Finder Plate Design Model Name : KD-SC800R Factory Setting Design Name : SAPPHIRE BLUE Design Name : LEOPARD Design Name : CARBON BLACK Design Name : SILVER HAIRLINE (No.49820)1-23...
Page 24: Adjustment
Frequency Band 6. Digital tester 87.5 MHz to 108.0 MHz 7. Tracking offset meter AM(MW) 522 kHz to 1620 kHz 8. Test Disc JVC :CTS-1000 (LW) 144 kHz to 279 kHz 9. Extension cable for check EXTSH002-22P 1 Dummy load Exclusive dummy load should be used for AM,and FM.
Page 25 KD-SC800R 3.2 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...
Page 26 KD-SC800R 3.2.1 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. Is 4V present at both...
Page 27 KD-SC800R 3.3 Maintenance of laser pickup 3.4 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.
Page 28: Description Of Major Ics
KD-SC800R SECTION 4 Description of major ICs 4.1 HA13164A (IC961) : 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...
Page 29 KD-SC800R 4.2 AK4381VT-X (IC481) : D/A converter • Pin layout MCLK DZFL BICK DZFR SDTI LRCK AOUTL+ AOUTL- CCLK AOUTR+ CDTI AOUTR- • Block diagram MCLK De-emphasis Clock Control Divider CCLK Interface DZFL CDTI DZFR AOUTL+ LRCK Audio Modulator Interpolator...
Page 30 KD-SC800R 4.3 LA4743K (IC941) : Power amp. • Block diagram 2200 F 0.022 F Vcc 1/2 Vcc 3/4 IN 1 OUT 1+ 0.22 F OUT 1- PWR GND1 Protective circuit OUT 2+ IN 2 OUT 2- 0.22 F PWR GND2...
Page 31 KD-SC800R • Pin layout • Pin function Pin No. Symbol Function Pin No. Symbol Function Header of IC FLIN Front Lch input Power GND RLIN Rear Lch input Outpur(-) for front Rch ONTIME Power on time control STDBY Stand by input...
Page 32 KD-SC800R 4.4 LA6579H-X (IC681) : 4-Channel bridge 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 Signal system S-GND power supply VIN1-SW All outputs ON/OFF H : ON VO2+ MUTE MUTE...
Page 33 KD-SC800R • Pin function Pin No. Symbol Function VIN1-A CH1 input AMP_inverted input VIN1+A CH1 input AMP_non-inverted input VCCP1 CH1 and CH2 power stage power supply VO1+ Output pin(+)for channel 1 VO1- CH1 output pin (-) for channel 1 VO2+...
Page 34 KD-SC800R 4.5 LC75823W (IC601) : LCD driver • Pin Layout 64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 •...
Page 35 KD-SC800R 4.6 NJM4565M-WE (IC581) : CD L.P.F. A OUTPUT B OUTPUT A INPUT A INPUT B INPUT B INPUT 4.7 RPM6938-SV4 (IC602) : Remote control receiver • Pin diagram • Block diagram Comp Rout Detector conversion trimming circuit magnetic shield...
Page 36 KD-SC800R 4.8 SAA6579T-X (IC71):RDS detecter • Pin layout QUAL DATA Vref OSCO OSCI TEST SCOUT MODE • Block diagram ANTI- 57 kHz OSCILLATOR QUALITY BIT RECONSTRUCTION ALIASING BAND PASS GENERATOR FILTER FILTER (8th ORDER) DIVIDER COSTAS LOOP BIPHASE CLOCKED DIFFERENTIAL...
Page 37 KD-SC800R TEA6320T-X (IC161) : 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...
Page 38 KD-SC800R 4.10TA2157FN-X (IC501):RF amp • Terminal layout • Block diagram PEAK 50 A BOTTOM PEAK 1.75k 240k 15pF x0.5 240k 15pF x0.5 180k 40pF RFGC (APC SW) (TE BAL) (AGC Gian) (TE BAL) VCTRLPIN Normal mode APC ON -50% +12dB...
Page 39 KD-SC800R • Pin function Pin No. Symbol Function 3.3V power supply pin Main-beam amp input pin Main-beam amp input pin Sub-beam amp input pin Sub-beam amp input pin Monitor photo diode amp input pin Laser diode amp output pin APC circuit ON/OFF control signal, laser diode (LDO) control signal input or bottom/peak detection frequency change pin.
Page 40 KD-SC800R 4.11 TC94A14FA (IC621) : DSP & DAC • 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 decoder Audio out Digital circuit output...
Page 41 KD-SC800R Symbol I/O Descroption TMAX O TMAX detection result output pin. TMAX Detection Result TMAX Output Longer than fixed period "PV " Within fixed period "HiZ" Shorter than fixed period "AV " LPFN I Inverted input pin for PLL LPF amp.
Page 42 KD-SC800R 4.12 TC94A20F-011 (IC401) : CD-ROM decoder + MP3 decoder with DAC and SRAM • Pin layout • Block diagram Switch General Timing inputbport generator 1-42 (No.49820)
Page 43 KD-SC800R • Pin functions Pin No Symbol Functions /RESET Hard reset input H:normal L:reset MiMD Micon I/F mode select input /MiCS Micon I/F chip select input /MiLP Micon I/F latch palus input MiDio I/O Micon I/F data input/output /MiCK Micon I/F clock input...
Page 44 KD-SC800R 4.13 UPD178078GF-598 (IC701) : CPU • Pin Layout • Pin function Pin No. Symbol Function STEARING REMOTE ROMOTE CONNECTER 2 to 8 NO USE VOL-DA I/O VOL IC VOL-CLK VOL IC NO USE LCD-DA LCD DRIVER LCD-CLK LCD DRIVER...
Page 45 KD-SC800R Pin No. Symbol Function AM E.OUT AM LPF FM E,OUT FM LPF IC(VPP) P.D. RESET RESET CIR CD MECHA SW REMOCON REMOCON INPUT NO USE OUTPUT L TEL MUTING TEL MUTING INPUT POWER POWER CONT CD-ON CD POWER CONT.
Page 46 KD-SC800R VICTOR COMPANY OF JAPAN, LIMITED AV & MULTIMEDIA COMPANY MOBILE ENTERTAINMENT CATEGORY 10-1,1chome,Ohwatari-machi,Maebashi-city,371-8543,Japan (No.49820) Printed in Japan 200304WPC...
Page 47: Schematic Diagrams
KD-SC800R SCHEMATIC DIAGRAMS CD RECEIVER KD-SC800R CD-ROM No.SML200304 Area Suffix E ----------- Continental Europe EX --------------- Central Europe Contents Block diagram Standard schematic diagrams Printed circuit boards 2-5 to 7 No.49820SCH COPYRIGHT 2003 VICTOR COMPANY OF JAPAN, LTD. 2003/04...
Page 48: Safety Precaution
KD-SC800R 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 49: Block Diagram
KD-SC800R Block diagram L-CH FM/AM J301 R-CH REAR L TUNER LINE OUT REAR R SW1,SW2,PSW FMEO FRONT L AMEO FRONT R LM,MSW FM/AM IC71 CDON DMO,FMO SPINDLE+ IC301 IC161 CD-RW IC521 MONO TRO,FOO FEED+ DETECTER SPINDLE- OUTLF POWER BUS0 to BUS3 E.VOL...
Page 50: Standard Schematic Diagrams
KD-SC800R KD-SC800R Standard schematic diagrams Main amplifier section J301 QNN0489-001 R322 R352 R332 R342 IC301 QAU0292-001 LA4743K QNB0100-002 4.7u R163 C186 1/50 2.2K 1/50 R343 R353 R323 R333 R321 2.2K 2.2K 2.2K 1/50 2.2K R351 R162 C185 C163 1/50 0.18...
Page 51 KD-SC800R CD servo control section 4.7K R563 FEED- R566 R564 FEED+ R562 8.2K R592 R595 FEED- 8.2K C592 FEED- R565 R594 C593 R591 CD.L R593 C561 47/16 120p FEED+ FEED+ 4.7/25 R567 6.8K C594 SPINDLE- SPINDLE+ R519 C584 D561 SPINDLE-...
Page 52 KD-SC800R KD-SC800R LCD & Key control section EN601 IC602 QSW0863-002 RPM6938-SV4 CN601 NNZ0087-001 REMOCON LCD1 ACC5V ILL10V QLD0253-001 ENC1 ENC2 R671 LCDCE R672 DATA LCDDA R673 LCDCL KEY2 KEY1 KEY0 LEDB LEDR 2.2K R651 R615 R605 R604 R603 R602 R601 2.2K...
Page 53 KD-SC800R Printed circuit boards Main board Forward side C903 IC901 J301 C905 L901 D901 J801 C907 CN901 C181 C913 R782 R901 R781 C906 C915 C184 Q321 D782 Q341 C904 C910 C783 C911 R353 R343 C193 C784 D351 C782 C301 C305...
Page 54 KD-SC800R Main board Reverse side D903 CN901 D902 R904 J801 R903 C903 R902 IC901 C914 R905 C344 C907 C801 C308 C333 C309 D901 C310 C905 C306 Q351 R331 R901 C904 D783 R301 C784 R168 C782 R971 C193 C332 C305 R191...
Page 55 KD-SC800R Front board Forward side D625 D619 S618 D622 IC602 S614 R603 S603 R602 R604 S606 D620 R605 S605 R615 EN601 D606 D621 S607 S604 S608 D695 S615 S617 S602 R609 D614 S609 D610 R608 S610 D611 S611 S612 LCD1...
Page 56 KD-SC800R VICTOR COMPANY OF JAPAN, LIMITED AV & MULTIMEDIA COMPANY 10-1,1Chome,Ohwatari-machi,Maebashi-city,371-8543,Japan Printed in Japan (No.49820SCH) 2003/04...
Page 57: Parts List
KD-SC800R PARTS LIST [ KD-SC800R ] * All printed circuit boards and its assemblies are not available as service parts. Area suffix E------------ Continental Europe EX --------------- Central Europe - Contents - Exploded view of general assembly and parts list (Block No.M1) CD mechanism assembly and parts list (Block No.MB)
Page 58 KD-SC800R Exploded view of general assembly and parts list Block No.
Page 59 KD-SC800R General assembly Block No. [M][1][M][M]  Symbol No. Part No. Part Name Description Local ------------ CD MECHA GE10043-210A TOP CHASSIS GE30568-006A HEAT SINK GE30393-002A BOTTOM COVER FSMA3005-001 INSULATOR QYSDST2604Z SCREW 2.6mm x 4mm(x3) FSKZ4005-001 SCREW (x2) QYSDST2604Z SCREW 2.6mm x 4mm(x3)
Page 60 KD-SC800R CD mechanism assembly and parts list Block No. Grease TNG-87 GP-501MK TN-2001-1011 CFD-005Z GP-501A...
Page 61: Loading Gear
KD-SC800R 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 303205304T SPINDLE MOTOR A...
Page 62: Electrical Parts List
KD-SC800R Electrical parts list Main board Block No. [0][1][0][0]  Symbol No. Part No. Part Name Description Local  Symbol No. Part No. Part Name Description Local D715 LNJ308G81/1-3/X LED D716 UDZS6.2B-X Z DIODE IC71 SAA6579T-X D717 UDZS6.2B-X Z DIODE...
Page 63 KD-SC800R  Symbol No.  Symbol No. Part No. Part Name Description Local Part No. Part Name Description Local C244 QEKJ1HM-105Z E CAPACITOR 1uF 50V M C564 NCB31EK-473X C CAPACITOR 0.047uF 25V K C301 QEKJ1CM-106Z E CAPACITOR 10uF 16V M...
Page 64 KD-SC800R  Symbol No.  Symbol No. Part No. Part Name Description Local Part No. Part Name Description Local NRSA63J-222X MG RESISTOR 2.2kΩ 1/16W J R527 NRSA63J-101X MG RESISTOR 100Ω 1/16W J NRSA63J-473X MG RESISTOR 47kΩ 1/16W J R528 NRSA63J-101X MG RESISTOR 100Ω...
Page 65: Front Board
KD-SC800R  Symbol No.  Symbol No. Part No. Part Name Description Local Part No. Part Name Description Local R753 NRSA63J-473X MG RESISTOR 47kΩ 1/16W J D615 SML-310VT/JK/-X LED R755 NRS181J-181X MG RESISTOR 180Ω 1/8W J D616 SML-310VT/JK/-X LED R757...
Page 66 KD-SC800R  Symbol No. Part No. Part Name Description Local R695 NRSA02J-681X MG RESISTOR 680Ω 1/10W J R696 NRSA02J-681X MG RESISTOR 680Ω 1/10W J R697 NRSA02J-820X MG RESISTOR 82Ω 1/10W J R698 NRSA02J-100X MG RESISTOR 10Ω 1/10W J CN601 NNZ0087-001...
Page 67 KD-SC800R <MEMO> 3-11...
Page 68 KD-SC800R Packing materials and accessories parts list Block No. Block No. KIT: 3-12...
Page 69 KD-SC800R Packing Accessories Block No. [M][3][M][M] Block No. [M][5][M][M]  Symbol No.  Symbol No. Part No. Part Name Description Local Part No. Part Name Description Local FSPG4002-001 POLY BAG (x2) GET0146-001A INST BOOK ENG GER FRE DUT QPA00801205 POLY BAG...

JVC KD-SC800R Service Manual

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