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JVC KD-DV4200J Service Manual
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JVC KD-DV4200J Service Manual

Dvd/cd receiver
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SERVICE MANUAL
2006
2
MA248
KD-DV4200J,KD-DV4201E,KD-DV4201EU,
KD-DV4202E,KD-DV4202EU,KD-DV4203UI,
KD-DV4204UI,KD-DV4205U,KD-DV4205UN,
KD-DV4205UT,KD-DV4205A,KD-DV4206U,
KD-DV4206UN,KD-DV4206UT,KD-DV4206A,
Lead free solder used in the board (material : Sn-Ag-Cu, melting point : 219 Centigrade)
1
PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
2
SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10
3
DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11
4
ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-25
5
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-31
DVD/CD RECEIVER
KD-DV4207EE

TABLE OF CONTENTS

COPYRIGHT © 2006 Victor Company of Japan, Limited
No.MA248
2006/2

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Summary of Contents for JVC KD-DV4200J

  • Page 1: Table Of Contents

    SERVICE MANUAL DVD/CD RECEIVER MA248 2006 KD-DV4200J,KD-DV4201E,KD-DV4201EU, KD-DV4202E,KD-DV4202EU,KD-DV4203UI, KD-DV4204UI,KD-DV4205U,KD-DV4205UN, KD-DV4205UT,KD-DV4205A,KD-DV4206U, KD-DV4206UN,KD-DV4206UT,KD-DV4206A, KD-DV4207EE Lead free solder used in the board (material : Sn-Ag-Cu, melting point : 219 Centigrade) TABLE OF CONTENTS PRECAUTIONS ............... 1-7 SPECIFIC SERVICE INSTRUCTIONS .
  • Page 2 SPECIFICATION KD-DV4200 AUDIO AMPLIFIER SECTION 17 W RMS × 4 Channels at 4 Ω and 1% THD+N Power Output 80 dBA (reference: 1 W into 4 Ω) Signal to Noise Ratio 4 Ω (4 Ω to 8 Ω allowance) Load Impedance Tone Control Range Bass ±10 dB at 100Hz...
  • Page 3 KD-DV4201/KD-DV4202 AUDIO AMPLIFIER SECTION Maximum Power Output Front/Rear 45 W per channel Ω Continuous Power Output Front/Rear 17 W per channel into 4 , 40 Hz to 20 000 Hz at no more than 0.8% total har- (RMS) monic distortion Ω...
  • Page 4 KD-DV4203/KD-DV4204/KD-DV4205/KD-DV4206 AUDIO AMPLIFIER SECTION Maximum Power Output Front/Rear 50 W per channel Ω Continuous Power Output Front/Rear 19 W per channel into 4 , 40 Hz to 20 000 Hz at no more than 0.8% (RMS) total harmonic distortion Ω Ω...
  • Page 5 KD-DV4207 AUDIO AMPLIFIER SECTION Maximum Power Output Front/Rear 50 W per channel Ω Continuous Power Output Front/Rear 19 W per channel into 4 , 40 Hz to 20 000 Hz at no more than 0.8% (RMS) total harmonic distortion Ω Ω...
  • Page 6 • "DVD Logo" is a trademark of DVD Format/Logo Licensing Corporation registered in the US, Japan and other countries. • Microsoft and Windows Media are either registered trademarks or trademarks of Microsoft Corporation in the United States and/ or other countries. •...

  • Page 7: 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 8 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 9 Important for laser products 5.CAUTION : If safety switches malfunction, the laser is able 1.CLASS 1 LASER PRODUCT to function. 2.DANGER : Invisible laser radiation when open and inter 6.CAUTION : Use of controls, adjustments or performance of lock failed or defeated. Avoid direct exposure to beam. procedures other than those specified here in may result in 3.CAUTION : There are no serviceable parts inside the hazardous radiation exposure.

  • Page 10: Specific Service Instructions

    SECTION 2 SPECIFIC SERVICE INSTRUCTIONS This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS. 1-10 (No.MA248)

  • Page 11: Disassembly

    SECTION 3 DISASSEMBLY Main body section 3.1.1 Removing the front panel assembly (See Fig.1) Push the detach button in the lower left part of the front panel as- sembly and remove the front panel assembly. Front panel assembly Detach button Fig.1 3.1.2 Removing the bottom cover (See Fig.1)
  • Page 12 3.1.4 Removing the side heat sink (See Fig.4) Reference: Remove the front panel and front chassis assemblies as re- quired. From the left side of the main body, remove the two screws B and three screws C attaching the side heat sink. Side heat sink Fig.4 3.1.5 Removing the rear bracket...
  • Page 13 3.1.6 Removing the main board (See Figs.5 and 6) • Remove the front panel assembly, bottom cover, front chassis assembly and side heat sink. CN961 Reference: Remove the rear bracket as required. (1) From the back side of the main body, remove the three screws G attaching the main board.
  • Page 14 3.1.8 Removing the main sub board (See Figs.8 to 10) • Remove the front panel assembly, bottom cover, front chassis assembly, side heat sink, main board and DVD mechanism as- DVD mechanism assembly sembly. (1) From the top side of the DVD mechanism assembly, re- move the two screws M attaching the dust cover.
  • Page 15 3.1.9 Removing the switch board (See Figs. 11 to 13) • Remove the front panel assembly. (1) From the back side of the front panel assembly, remove the four screws Q attaching the rear cover. (See Fig.11.) (2) Release the joints j attaching the rear cover to the front panel assembly.
  • Page 16 DVD mechanism assembly 3.2.1 Removing the mechanism control board (See Fig.1) Caution: Before disconnecting the flexible wire extending from the DVD Lug wire Flexible wire pickup, solder the short-circuit point on the flexible wire using Feed motor a grounding soldering iron. If you do not follow this instruction, Double tape the DVD pickup may be damaged.
  • Page 17 3.2.2 Removing the top cover (See Fig.2) (1) Remove the two screws D attaching the top cover on the back of the body. (2) Remove the top cover upward. Reference: When reassembling, set part b of the top cover under the bending part c of the chassis frame.
  • Page 18 3.2.4 Removing the clamper unit (See Fig.5 to 7) • Remove the top cover and the mechanism section. (1) Remove the clamper2 spring on the bottom of the mecha- Clamper2 spring nism section. (See Figs.5.and 6.) (2) Release the part d of the clamper spring from the bending part of the chassis base assembly.
  • Page 19 Clamper unit Clamper spring Fig.8 Clamper unit Notch Fig.9 (No.MA248)1-19...
  • Page 20 3.2.6 Removing the front unit (See Fig.10 to 12) • Remove the top cover and the mechanism section. (1) Disconnect the flexible wire from connector CN202 on the mechanism control board at the bottom of the body. (See Front unit Fig.10.) (2) Remove the screw G attaching the front unit on the top of the body.
  • Page 21 3.2.7 Removing the loading arm assembly (See Fig.13 , 14) • Remove the top cover, the mechanism section and the front unit. (1) From the top of the body, move the loading arm assembly from the front side upward, and release the bosses from the right and left joints k and m of the chassis base assem- bly.
  • Page 22 3.2.8 Removing the rod (L)(R)/roller assembly (See Fig.15 and 16) • Remove the top cover, the mechanism section, the front unit and the loading arm assembly. Collar Collar (1) Release the rod (L) and (R) from the joints q at the bottom of the loading arm assembly (See Fig.15.) (2) Remove the roller assembly from the loading arm assem- bly.
  • Page 23 3.2.9 Removing the DVD pickup assembly (See Fig.17 to 19) • Remove the mechanism control board. (1) From the bottom of the body, turn the feed gear in the di- Feed gear rection of the arrow to move the DVD pickup outwards. (See Fig.17.) (2) Remove the screw J attaching the thrust spring.
  • Page 24 3.2.10 Removing the spindle motor (See Fig.20) • Remove the mechanism control board. Remove the two screws L attaching the spindle motor on the Spindle motor bottom of the body. Caution: Perform adjustment when reattaching the spindle motor. Fig.20 3.2.11 Removing the feed motor assembly (See Fig.21 and 22) •...

  • Page 25: Adjustment

    SECTION 4 ADJUSTMENT Test instruments required for adjustment Standard measuring conditions (1) Digital oscilloscope (100MHz) Power supply voltage DC14.4V(11 to 16V) (2) Jitter meter Load impedance 4Ω(2 Speakers connection) (3) Digital tester Line Output 20KΩ (4) Electric voltmeter (5) Tracking offset meter Caution: (6) Test Disc : VT501 or VT502 Be sure to attach the heat sink and rear bracket onto the power...
  • Page 26 After replacing the pickup, set the unit in the service mode to display a jitter value on the LCD. Confirm that the jitter value measured with a jitter meter is within 12% of the jitter value displayed on the LCD. If it is within 12%, then adjustment is not necessary. Please note that a jitter value displayed on the LCD is hex data.
  • Page 27 Jitter value conversion table Load the test DVD and set the unit to the service mode. A jitter value converted to the hex value is displayed on the LCD. Refer to the corresponding decimal notation value shown in the following Jitter Conversion Table. The adjustment is OK if the jitter value measured with a jitter meter is within 12% of the jitter value displayed on the LCD.
  • Page 28 Operation procedure Keep this state more than 2 seconds while continuing pressing the [SEL] button, [SOURCE] button and [STANDBY/ON ATTENUATOR] button sequentially. The unit enters the service mode. "INIT ALL" is Press the [SEL] key Initialize all data to the factory setting indicated on the LCD.
  • Page 29 Detailed error code (2 bytes) *Displayed with loading/ejection error only..First byte Higher 4 bits Route NO. (Process of error occurrence) Refer to charts 1.1 and 1.2..Lower 4 bits Error type [1] Time out [2] Switch status error [3] Swinging error...
  • Page 30 DVD unit check mode Change LCD indication with a [FF ] button and a [REW ] button. Check item list Example of A/D key DVD unit operation Indication contents LCD indication Start at normal speed NORMPLAY (After start, it is measured JITTER on the Laser current value * * * * internal position)

  • Page 31: Troubleshooting

    SECTION 5 TROUBLESHOOTING Feed section Is 4V present at both Check the feed motor. sides of the feed motor? Check the connections Is the voltage output at between the feed motor pin 17 and pin 18 of IC201? and IC201. Is the power supply Is the power supply Is the voltage input at pin...
  • Page 32 Spindle section Does the RF signal appear Is the RF waveform at Is the disk rotated? pin 111 of IC301 distorted? at pin 111 of IC301? Is the voltage output at Check the spindle motor Check the circuits in Proceed to the Tracking pin 20,pin22 and pin 22 and its wiring.
  • Page 33 Signal processing section Is the sound output from Normal both channels (L, R)? Is the audio signal (including sampling Is the audio signal output No sound from either Is 9V present at pin 32 output components) at pin 15 and pin 18 of channel.
  • Page 34 16PIN CORD DIAGRAM (for KD-DV4200) Black Green GN/BK WH/BK Violet VI/BK GY/BK Gray Blue White Yellow BL/WH Yellow Green 1 BK MEMORY 16 YL 2 RD 9 WH 10 WH/BK 12 GY 11 GY/BK 8 GN 7 GN/BK 5 VI 6 VI/BK REMOTE 3 BL/WH...
  • Page 35 16 PIN CORD DIAGRAM (for KD-DV4201,KD-DV4201,KD-DV4202,KD-DV4207) Black Green GN/BK WH/BK Violet VI/BK GY/BK Gray Blue White Yellow Brown Yellow Green BL/WH BL/WH 7 RD RD 7 16 YL MEMORY YL 4 1 BK REMOTE 3 BL/WH 13 BR TEL MUTING 8 GN 7 GN/BK 5 VI...
  • Page 36 5.10 16PIN CORD DIAGRAM (for KD-DV4203,KD-DV4204,KD-DV4205,KD-DV4206) Black Green GN/BK WH/BK Violet VI/BK GY/BK Gray Blue White Yellow BL/WH Yellow Green 1 BK MEMORY 16 YL 2 RD 9 WH 10 WH/BK 12 GY 11 GY/BK 8 GN 7 GN/BK 5 VI 6 VI/BK REMOTE 3 BL/WH...
  • Page 37 (No.MA248)1-37...
  • Page 38 Victor Company of Japan, Limited Mobile Entertainment Business Group Mobile Entertainment Category 10-1,1chome,Ohwatari-machi,Maebashi-city,Gumma-ken, 371-8543,Japan (No.MA248) Printed in Japan...

This manual is also suitable for:

Kd-dv4201eKd-dv4202eKd-dv4202euKd-dv4203uiKd-dv4204uiKd-dv4205u ... Show all