JVC KD-S845 Service Manual
  1. Manuals
  2. Brands
  3. JVC Manuals
  4. Car Receiver
  5. KD-S845
  6. Service manual
JVC KD-S845 Service Manual

JVC KD-S845 Service Manual

Hide thumbs Also See for KD-S845:
Table of Contents

Advertisement

Quick Links

Download this manual See also: Instruction Manual
QQ
3 7 63 1515 0
SERVICE MANUAL
5
2003
49858
TE
L 13942296513
1
Important Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2
Disassembly method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3
Adjustment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4
Description of major ICs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
www
.
http://www.xiaoyu163.com
CD RECEIVER
KD-S845
TABLE OF CONTENTS
x
ao
u163
y
i
COPYRIGHT © 2003 VICTOR COMPANY OF JAPAN, LTD.
http://www.xiaoyu163.com
2 9
8
KD-S845
45Wx4
7
8
9
10
11
12
RPT
Q Q
3
6 7
1 3
1 5
co
.
9 4
2 8
TU NER
RND
SCM
0 5
8
2 9
9 4
2 8
Area Suffix
U ------- Other Areas
m
9 9
9 9
No.49858
2003/5

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the KD-S845 and is the answer not in the manual?

Questions and answers

Related Manuals for JVC KD-S845

Summary of Contents for JVC KD-S845

  • Page 1 3 7 63 1515 0 SERVICE MANUAL CD RECEIVER 49858 2003 KD-S845 KD-S845 45Wx4 TU NER L 13942296513 Area Suffix U ------- Other Areas TABLE OF CONTENTS Important Safety Precautions ............. 2 Disassembly method .

  • Page 2: Important Safety Precautions

    http://www.xiaoyu163.com 3 7 63 1515 0 SECTION 1 Important Safety 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: Disassembly Method

    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 DVD players.
  • Page 4 http://www.xiaoyu163.com 3 7 63 1515 0 SECTION 2 Disassembly method Main body 2.1.1 Removing the front panel assembly (See Fig.1) (1) Push the detach button in the lower left part of the front panel and remove the front panel assembly in the direction of the arrow.
  • Page 5 http://www.xiaoyu163.com 3 7 63 1515 0 2.1.3 Removing the heat sink (See Fig.4) (1) Remove the three screws A on the left side of the main body. Heat sink Fig.4 2.1.4 Removing the bottom cover (See Figs.5 and 6) • Prior to performing the following procedure, remove the front Joint d panel assembly, front chassis assembly and heat sink.
  • Page 6 http://www.xiaoyu163.com 3 7 63 1515 0 2.1.5 Removing the rear bracket (See Fig.7) • Prior to performing the following procedure, remove the front panel assembly, front chassis assembly, heat sink and bottom Rear bracket cover. (1) Remove the one screws B, for screws C and three screws D on the back side of the main body.
  • Page 7 http://www.xiaoyu163.com 3 7 63 1515 0 2.1.8 Removing the front board (See Figs. 10 to 12) • Prior to performing the following procedure, remove the front panel assembly. (1) Remove the four screws G on the back side of the front panel assembly.
  • Page 8 http://www.xiaoyu163.com 3 7 63 1515 0 CD mechanism section 2.2.1 Removing the CD mechanism control board (See Fig.1 and 2) (1) Unsolder the part a and b on the CD mechanism control board. Damper bracket CD mechanism assembly (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 9 http://www.xiaoyu163.com 3 7 63 1515 0 2.2.2 Removing the loading motor (See Fig.3 to 5) • Rrior to performing the following procedure, remove the CD mechanism control board. CD mechanism control board (1) Remove the two springs f attaching the CD mechanism as- sembly and the front bracket.
  • Page 10 http://www.xiaoyu163.com 3 7 63 1515 0 2.2.3 Removing the CD mechanism assembly (See Fig.1, 6 to 9) • Prior to performing the following procedure, remove the CD mechanism control board and the front bracket (loading mo- assembly CD mechanism Damper bracket tor).
  • Page 11 http://www.xiaoyu163.com 3 7 63 1515 0 2.2.4 Removing the feed motor assembly (See Fig.10) • Prior to performing the following procedure, remove the CD mechanism control board, the front bracket (loading motor) FD screw Part i Feed motor assembly and the CD mechanism assembly. (1) Remove the two screws F and the feed motor assembly.
  • Page 12 6. Digital tester FM 87.5MHz to 108.0MHz AM 531 kHz to 1602 kHz 7. Tracking offset meter 8. Test Disc JVC :CTS-1000 9. Extension cable for check EXTGS004-26P 1 Dummy load Exclusive dummy load should be used for AM, and FM. For FM dummy load, there is a loss of 6dB between SSG output and antenna input.
  • Page 13 http://www.xiaoyu163.com 3 7 63 1515 0 Flow of functional operation unit TOC read Power ON Set Function CD When the laser diode correctly When the pickup correctly moves emits to the inner area of the disc Microprocessor $82 $81 Disc inserted Microprocessor commands commands...
  • Page 14 http://www.xiaoyu163.com 3 7 63 1515 0 3.2.1 Feed section Is 3.3V present at IC501 Is the voltage output at Is the wiring for IC541 pin "20"? IC541 pin "40" 5V or 0V? pin 27? Check CD 8V Check the vicinity of and 5V.
  • Page 15 http://www.xiaoyu163.com 3 7 63 1515 0 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 16: Http://Www.xiaoyu163.Com

    http://www.xiaoyu163.com 3 7 63 1515 0 SECTION 4 Description of major ICs 4.1 AN80T07 (IC901) : Regulator • Block diagram MODE1 *ASO, Peak Current Protection. *Thermal Protection (Except VDD, Comp output). Outputs Reference Voltage Drive Drive Drive Drive L 13942296513 MODE2 SW5V BATT.DET COMP AUDIO...
  • Page 17 http://www.xiaoyu163.com 3 7 63 1515 0 IC-PST600M/G/-W (IC702) : System reset • Block diagram Vout 4.3 K6R1008VDTI10-X (IC451) : 128K x 8 Bit High-Speed CMOS Static RAM • Pin layout • Block diagram Pre-Charge Circuit Clk Gen. Memory Array 512 Rows 256x8 Columns L 13942296513 Data...

  • Page 18: Block Diagram

    http://www.xiaoyu163.com 3 7 63 1515 0 LA4743K (IC301) : 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 L 13942296513...
  • Page 19 http://www.xiaoyu163.com 3 7 63 1515 0 • 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 Output (+) for rear Lch...

  • Page 20: Adjustment

    http://www.xiaoyu163.com 3 7 63 1515 0 LA6574H-X (IC501) : CD driver • Pin layout & brock daiagram Thermal Shutdown VCC2 1 28 REV POWER supplise 27 FWD V05- 2 26 S-GND V05+ 3 25 VCONT V04+ 4 V04- 5 24 VIN4 V03+ 6 23 VIN4G 22 VCC-S...
  • Page 21 http://www.xiaoyu163.com 3 7 63 1515 0 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 L 13942296513 •...

  • Page 22: Block Diagram

    http://www.xiaoyu163.com 3 7 63 1515 0 NJU7241F25-X (IC461) : Regulator • Pin layout GND 1 5 STB VIN 2 VOUT 3 4 NC • Block diagram Short protect VIN 2 3 VOUT STB 5 Vref GND 1 1 GND L 13942296513 NJU7241F33-X (IC471) : Voltage regulator •...

  • Page 23: Block Diagram

    http://www.xiaoyu163.com 3 7 63 1515 0 4.10 TB2118F-X (IC31) : PLL • Pin Layout • Block diagram Constant power supply voltage Buff. ON/OFF AM CP. Phase OSC circuit Reference Counter Comparator switch FM VCO 4-bit Prescaler Swallow counter 12-bit AMVCO Programmable counter L 13942296513 20-bit BINARY COUNTER...
  • Page 24 http://www.xiaoyu163.com 3 7 63 1515 0 4.11 TA2147F-X (IC521) : RF amp. • Pin layout • Block diagram PEAK GVSW 12 RFDC 20 A TEBC 50 A RFRP L 13942296513 BOTTOM RFRPIN PEAK RFGO 1.75k 240k 15pF x0.5 RFGC 240k 15pF x0.5 AGCIN...

  • Page 25: No.49858)1

    http://www.xiaoyu163.com 3 7 63 1515 0 • Pin function Symbol Function 3.3V Power supply pin Main-beam amp input pin Main-beam amp input pin Sub-beam amp input pin Sub-beam 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 26 http://www.xiaoyu163.com 3 7 63 1515 0 4.12 TC9490FA (IC541) : DSP & DAC • Pin layout & Block daiagram TEZI Clock generator SBAD 1-bit Servo control RFRP RFZI ZDET RFCT Digital equalizer Address automatic circuit adjustment circuit BUS0 Data CLV servo slicer BUS1 SLCO...
  • Page 27 http://www.xiaoyu163.com 3 7 63 1515 0 • Pin function Symbol Function Bit clock outputpin 32fs, 48fs, or 64fs selectable by command. LRCK L/R channel clock output pin."L" for L channe and "H" for R channel. Output polarity can be inverted by command.
  • Page 28 http://www.xiaoyu163.com 3 7 63 1515 0 Symbol Function RFGC RF amplitude adjustment control signal output pin. TEBC Tracking balance control signal output pin. APC circuit ON/OFF signal output pin. At laser on, high impedance with UHS="L", H output with UHS="H". AVDD3 Analog 3.3V power supply voltage pin.
  • Page 29 http://www.xiaoyu163.com 3 7 63 1515 0 4.14 TEA6320T-X (IC161) : E.volume • Pin layout OUTLR OUTRR 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...
  • Page 30 http://www.xiaoyu163.com 3 7 63 1515 0 4.15 TC94A02F-005 (IC401) : DSP • Block diagram AD10 VDDT LRCKiA BCKiA SDi0 L 13942296513 AD13 VDDT AD14 /MiCK AD16 MiDio AD15 MiMD /RESET Timing Generator General Input Port u163 1-30 (No.49858) http://www.xiaoyu163.com...
  • Page 31 http://www.xiaoyu163.com 3 7 63 1515 0 • Pin function Pin No. Symbol I/O Description Pin No. Symbol I/O Description Digital GND /RESET Hard reset input terminal(H:Normal I/O External SRAM data input/output 2 operation L: Reset) terminal MiMD Micon I/F mode select input terminal I/O External SRAM data input/output 3 O External SRAM address output 0 terminal terminal...
  • Page 32 http://www.xiaoyu163.com 3 7 63 1515 0 4.16 UPD784215AGC184 (IC701) : CPU • Pin layout • Pin function Pin No. Symbol Function CD mechanism detect switch CD mechanism detect switch CD mechanism detect switch REST Reset signal input terminal from CD mechanism Loading motor control signal input terminal Loading motor control signal input terminal Not use...
  • Page 33 http://www.xiaoyu163.com 3 7 63 1515 0 Pin No. Symbol Function BUSSCK J-BUS serial clock signal I/O terminal BUSI/O J-BUS data input/output terminal LCDDA Data output terminal for LCD driver LCDCK Clock output terminal for LCD driver LCDCE Chip enable 1 output terminal for LCD driver 44 to 52 Not use SD/ST...
  • Page 34 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.49858) Printed in Japan http://www.xiaoyu163.com...

  • Page 35: Schematic Diagrams

    KD-S845 3 7 63 1515 0 SCHEMATIC DIAGRAMS CD RECEIVER KD-S845 CD-ROM No.SML200305 Area suffix U --------------- Other Areas KD-S845 45Wx4 L 13942296513 TU NER Contents Block diagram Standard schematic diagrams Printed circuit boards 2-5~7 u163 No.49858SCH COPYRIGHT 2003 VICTOR COMPANY OF JAPAN, LTD.

  • Page 36: Safety Precaution

    KD-S845 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 KD-S845 3 7 6 3 1 5 1 5 0 Block diagram OUTLF OUTRF TU.L FM/AM TU.R J321 TUNER LINE OUT SW1,SW2,SW3,SW4,PSW OUTLR AMVT OUTRR SEEK/STOP LOADING+ FMVT LOADING SD/ST LOADING- LOADING+ FM/AM OSC LM0,LM1 MONO MOTOR LOADING- TRO,FOO...
  • Page 38 KD-S845 KD-S845 3 7 6 3 1 5 1 5 0 Standard schematic diagrams Main amplifier section D243 1SS133-T1 R244 C243 R243 0.047 180k R245 C241 R247 1/50 R242 R241 IC301 C242 22/16 LA4743K Q241 QAU0258-002 2SD601A/R/-X LEVEL R161 D240 2.2/50...
  • Page 39 KD-S845 3 7 6 3 1 5 1 5 0 CD servo control section R502 6.8k R503 5.6k R586 R584 R587 C582 CD.R R501 6.8k R-CH R581 R585 C584 1.5k 4.7/25 C503 R506 47/6.3 8.2k C587 Q501 C581 150p...
  • Page 40 KD-S845 KD-S845 3 7 6 3 1 5 1 5 0 LCD & Key control section QSW0863-001 JS690 RPM6938-SV4 IC602 0.022 R661 C681 VCM0335-001 R662 CJ601 LCD1 ACC5V QLD0225-001 REMOCON ENC1 ENC2 LCDCL LCDDA LCDCE KEY0 KEY1 KEY2 IC601...
  • Page 41 KD-S845 3 7 63 1515 0 Printed circuit boards Main board Forward side IC901 R904 C914 C901 C904 L901 D341 C802 C911 J801 J321 Q321 CN901 C913 C905 Q341 D902 C902 C163 D901 Q891 R901 R341 C173 C910 C907...
  • Page 42 KD-S845 3 7 63 1515 0 Main board Reverse side C916 C917 C891 IC901 R971 J321 C912 R972 D972 L901 C325 D971 J801 C906 D901 C324 C323 C904 CN901 C914 C322 R902 C852 C971 C163 C173 Q351 Q331 C905...
  • Page 43 KD-S845 3 7 63 1515 0 Front board D622 Forward side S612 D625 S618 S601 R616 D619 D601 R655 R633 D623 S608 D644 S617 D624 D602 R632 S613 S607 D621 D645 LCD1 JS690 S609 D618 IC602 D610 D613 D614...
  • Page 44 KD-S845 3 7 63 1515 0 L 13942296513 u163 V ICTOR COMPANY OF JAPAN, LIMITED AV & MULTIMEDIA COMPANY 10-1,1Chome,Ohwatari-machi,Maebashi-city,371-8543,Japan Printed in Japan (No.49858SCH) 2003/05 http://www.xiaoyu163.com...

  • Page 45: Parts List

    KD-S845 3 7 63 1515 0 PARTS LIST [ KD-S845 ] * All printed circuit boards and its assemblies are not available as service parts. Area suffix U --------------------- Other Areas L 13942296513 - Contents - Exploded view of general assembly and parts list (Block No.M1) CD mechanism assembly and parts list (Block No.MB)
  • Page 46 KD-S845 3 7 63 1515 0 Exploded view of general assembly and parts list Block No. L 13942296513 u163 http://www.xiaoyu163.com...
  • Page 47 KD-S845 3 7 63 1515 0 General assembly Block No. [M][1][M][M]  Symbol No. Part No. Part Name Description Local ------------ CD MECHA FSJC1029-401 TOP CHASSIS FSMH3001-202 SIDE PANEL FSKM3011-002 BOTTOM COVER FSMA3004-203 INSULATOR QYSDST2604Z SCREW 2.6mm x 4mm(x3)
  • Page 48 KD-S845 3 7 63 1515 0 CD mechanism assembly and parts list Block No. Grease G-31SA TN-CCD1001Z-138S G-31SA(Bottom side) RX-405 L 13942296513 u163 106 29 http://www.xiaoyu163.com...
  • Page 49 KD-S845 3 7 63 1515 0 CD mechanism  Symbol No. Block No. [M][B][M][M] Part No. Part Name Description Local  Symbol No. Part No. Part Name Description Local 303105310T FEED MO ASSY 303105311T SPINDLE MO ASSY 303105312T FEED SCREW ASSY...

  • Page 50: Electrical Parts List

    KD-S845 3 7 63 1515 0 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 D972 RB160M-30-X SB DIODE D981 1SS355-X SI DIODE...
  • Page 51 KD-S845 3 7 63 1515 0  Symbol No.  Symbol No. Part No. Part Name Description Local Part No. Part Name Description Local C316 QERF1EM-475Z E CAPACITOR 4.7uF 25V M C558 NCB31EK-473X C CAPACITOR 0.047uF 25V K C317...
  • Page 52 KD-S845 3 7 63 1515 0  Symbol No.  Symbol No. Part No. Part Name Description Local Part No. Part Name Description Local NRSA63J-470X MG RESISTOR 47Ω 1/16W J R506 NRSA63J-822X MG RESISTOR 8.2kΩ 1/16W J NRSA63J-103X MG RESISTOR 10kΩ...
  • Page 53 KD-S845 3 7 63 1515 0 Front board  Symbol No. Part No. Part Name Description Local Block No. [0][2][0][0] R723 NRSA63J-103X MG RESISTOR 10kΩ 1/16W J  Symbol No. R725 NRSA63J-103X MG RESISTOR 10kΩ 1/16W J Part No.
  • Page 54 KD-S845 3 7 63 1515 0  Symbol No. Part No. Part Name Description Local R649 NRSA63J-821X MG RESISTOR 820Ω 1/16W J R651 NRSA63J-222X MG RESISTOR 2.2kΩ 1/16W J R652 NRSA63J-222X MG RESISTOR 2.2kΩ 1/16W J R653 NRSA63J-103X MG RESISTOR 10kΩ...
  • Page 55 KD-S845 3 7 63 1515 0 <MEMO> L 13942296513 u163 3-11 http://www.xiaoyu163.com...
  • Page 56 KD-S845 3 7 63 1515 0 Packing materials and accessories parts list Block No. A2 A3 L 13942296513 A4A5A6 A7A8 u163 3-12 http://www.xiaoyu163.com...
  • Page 57 KD-S845 3 7 63 1515 0 Packing and accessories Block No. [M][3][M][M]  Symbol No. Part No. Part Name Description Local GET0163-001A INST BOOK ENG CHI CHI(TAIWAN)ARA GET0163-002A INSTALL MANUAL ENG CHI CHI(TAIWAN)ARA LVT0918-001A MP3 SHEET VKZ4027-202 PLUG NUT...

Table of Contents