Download
Share
Print this page
  1. Manuals
  2. Brands
  3. JVC Manuals
  4. Car Receiver
  5. KD-S845
  6. Service manual

JVC KD-S845 Service Manual

Cd receiver
Hide thumbs Also See for KD-S845:

Advertisement

Quick Links

Download this manual See also: Service Manual, Instruction Manual
SERVICE MANUAL
5
2003
49858
1
Important Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2
Disassembly method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3
Adjustment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4
Description of major ICs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
CD RECEIVER
KD-S845
TABLE OF CONTENTS
COPYRIGHT © 2003 VICTOR COMPANY OF JAPAN, LTD.
KD-S845
45Wx4
7
8
9
10
11
12
RPT
RND
SCM
U ------- Other Areas
TU NER
Area Suffix
No.49858
2003/5

Advertisement

loading

Related Manuals for JVC KD-S845

Summary of Contents for JVC KD-S845

  • Page 1 SERVICE MANUAL CD RECEIVER 49858 2003 KD-S845 KD-S845 45Wx4 TU NER Area Suffix U ------- Other Areas TABLE OF CONTENTS Important Safety Precautions ............. 2 Disassembly method .
  • Page 2 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 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 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. Front panel assembly Eject button Fig.1...
  • Page 5 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 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 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. (2) Release the ten joints g. (3) Take out the front board.
  • Page 8 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 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. (2) Remove the two screws B and the front bracket while pull- ing the flame outward.
  • Page 10 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). (1) Remove the three screws D and the damper bracket. (2) Raise the both sides fix arms and move the fix plates in the direction of the arrow to place the four shafts g as shown in Fig.8 and 9.
  • Page 11 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. Part j Pickup unit FD gear...
  • 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 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 TC9490FA"38"...

  • Page 14: Parts List

    KD-S845 PARTS LIST [ KD-S845 ] * All printed circuit boards and its assemblies are not available as service parts. Area suffix U --------------------- Other Areas - Contents - Exploded view of general assembly and parts list (Block No.M1) CD mechanism assembly and parts list (Block No.MB) Electrical parts list (Block No.01~02)
  • Page 15 KD-S845 Exploded view of general assembly and parts list Block No.
  • Page 16 KD-S845 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) FSKZ4005-001 SCREW (x2) QYSDST2604Z SCREW 2.6mm x 4mm(x3)
  • Page 17 KD-S845 CD mechanism assembly and parts list Block No. Grease G-31SA TN-CCD1001Z-138S G-31SA(Bottom side) RX-405 106 29...
  • Page 18 KD-S845 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 30310101T FRAME 303111301T LDG MOTOR ASSY...

  • Page 19: Electrical Parts List

    KD-S845 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 IC31 TB2118F-X PLL IC D982...
  • Page 20 KD-S845  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 QERF1CM-476Z E CAPACITOR 47uF 16V M...
  • Page 21 KD-S845  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 1/16W J R507 NRSA63J-203X MG RESISTOR 20kΩ...

  • Page 22: Front Board

    KD-S845  Symbol No. Front board 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. Part Name Description Local R726 NRSA63J-103X MG RESISTOR 10kΩ...
  • Page 23 KD-S845  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 1/16W J R654 NRSA63J-103X MG RESISTOR 10kΩ...
  • Page 24 KD-S845 <MEMO> 3-11...
  • Page 25 KD-S845 Packing materials and accessories parts list Block No. A2 A3 A4A5A6 A7A8 3-12...
  • Page 26 KD-S845 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 VKH4871-001SS MOUNT BOLT VKZ4328-001 LOCK NUT...