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JVC KD-G140J Service Manual
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JVC KD-G140J Service Manual

JVC KD-G140J Service Manual

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SERVICE MANUAL
KD-G140J, KD-G240J, KD-G244UI, KD-G245U, KD-G245UN,
2008
5 S ERVICE MANUAL
MA372<Rev.002>
KD-G245UT, KD-G245UH, KD-G248UF, KD-G341E,
KD-G341EX, KD-G341EY, KD-G341EU, KD-G342E,
KD-G342EX, KD-G342EY,KD-G342EU, KD-G343E, KD-G343EX,
KD-G343EY, KD-G343EU, KD-G347SEE, KD-G347BEE,
KD-G394UI, KD-G395U, KD-G395UN,KD-G395UT, KD-G395UH,
KD-G396U, KD-G396UN, KD-G396UT, KD-G396UH,
KD-G398UF,KD-G396SUI, KD-G299UR
COPYRIGHT © 2008 Victor Company of Japan, Limited
Lead free solder used in the board (material : Sn-Ag-Cu, melting point : 219 Centigrade)
Lead free solder used in the board (material : Sn-Cu, melting point : 230 Centigrade)
1
PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8
2
SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11
3
DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12
4
ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-24
5
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-25
CD RECEIVER
only for
KD-G140/KD-G240
KD-G394/KD-G395
KD-G396/KD-G398
KD-G299
only for
KD-G240/KD-G341/KD-G342
KD-G343/KD-G347/KD-G394
KD-G395/KD-G396/KD-G398
KD-G299

TABLE OF CONTENTS

COPYRIGHT © 2008 Victor Company of Japan, Limited
only for
only for
KD-G347
KD-G341
KD-G342
KD-G343
KD-G347
only for
KD-G140
KD-G240
KD-G299
No.MA372<Rev.002>
2008/5

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Summary of Contents for JVC KD-G140J

  • Page 1: Table Of Contents

    SERVICE MANUAL CD RECEIVER KD-G140J, KD-G240J, KD-G244UI, KD-G245U, KD-G245UN, MA372<Rev.002> 2008 5 S ERVICE MANUAL KD-G245UT, KD-G245UH, KD-G248UF, KD-G341E, KD-G341EX, KD-G341EY, KD-G341EU, KD-G342E, KD-G342EX, KD-G342EY,KD-G342EU, KD-G343E, KD-G343EX, KD-G343EY, KD-G343EU, KD-G347SEE, KD-G347BEE, KD-G394UI, KD-G395U, KD-G395UN,KD-G395UT, KD-G395UH, KD-G396U, KD-G396UN, KD-G396UT, KD-G396UH, KD-G398UF,KD-G396SUI, KD-G299UR...
  • Page 2 SPECIFICATION KD-G140/KD-G240 Audio amplifier section 20 W RMS × 4 Channels at 4 Ω and < or = 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...
  • Page 3 KD-G244/KD-G245/KD-G248/KD-G394/KD-G395/KD-G396/KD-G398 Audio amplifier section Maximum Power Output: Front/Rear 50 W per channel 19 W per channel into 4 Ω 40 Hz to 20 000 Hz at no more than 0.8% Continuous Power Output (RMS): Front/Rear total harmonic distortion. 4 Ω (4 Ω to 8 Ω allowance) Load Impedance Tone Control Range Bass...
  • Page 4 KD-G341/KD-G342/KD-G343 Audio amplifier section Maximum Power Output: Front/Rear 50 W per channel 19 W per channel into 4 Ω 40 Hz to 20 000 Hz at no more than 0.8% total Continuous Power Output (RMS): Front/Rear harmonic distortion. 4 Ω (4 Ω to 8 Ω allowance) Load Impedance Tone Control Range Bass...
  • Page 5 KD-G347 Audio amplifier section Maximum Power Output: Front/Rear 50 W per channel 19 W per channel into 4 Ω 40 Hz to 20 000 Hz at no more than 0.8% total Continuous Power Output (RMS): Front/Rear harmonic distortion. 4 Ω (4 Ω to 8 Ω allowance) Load Impedance Tone Control Range Bass...
  • Page 6 KD-G396 AUDIO AMPLIFIER SECTION Maximum Power Output Front/Rear 50 W per channel 19 W per channel into 4 Ω 40 Hz to 20 000 Hz at no more than 0.8% Continuous Power Output Front/Rear (RMS) total harmonic distortion. 4 Ω (4 Ω to 8 Ω allowance) Load Impedance Tone Control Range Bass...
  • Page 7 KD-G299 Audio amplifier section 20 W RMS × 4 Channels at 4 Ω and < or = 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...

  • Page 8: Precaution

    SECTION 1 PRECAUTION 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 9 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 laser products.
  • Page 10 Important for laser products 1.CLASS 1 LASER PRODUCT 5.CAUTION : If safety switches malfunction, the laser is able to function. 2.CAUTION : (For U.S.A.) Visible and/or invisible class II laser radiation 6.CAUTION : Use of controls, adjustments or performance of when open.

  • Page 11: Specific Service Instructions

    SECTION 2 SPECIFIC SERVICE INSTRUCTIONS This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS. (No.MA372<Rev.002>)1-11...

  • Page 12: Disassembly

    SECTION 3 DISASSEMBLY Main body (used figure is KD-G341) 3.1.1 Removing the FRONT CHASSIS assembly (See Fig.1) (1) Disengage the four hooks a engaged the both side of the FRONT CHASSIS assembly. hook Fig.1 3.1.2 Removing the HEAT SINK (See Fig.2, 3) (1) Remove the three screws A and the two screws B attaching the HEAT SINK.
  • Page 13 3.1.4 Removing the MAIN BOARD assembly (See Fig.5) (1) Remove the two screws F attaching the MAIN BOARD assembly. (2) Disconnect the connector CN501 connected to MAIN CN501 BOARD assembly and CD MECHANISM assembly. Fig.5 3.1.5 Removing the CD MECHANISM assembly (See Fig.6) (1) Remove the three screws G attaching the CD MECHANISM assembly.
  • Page 14 CD MECHANISM assembly section • Remove the CD MECHANISM assembly from the main body. 3.2.1 Removing the MECHANISM CONTROL BOARD Mechanism assembly (See Fig.1 and 2) control board (1) From the bottom side of CD MECHANISM assembly, CN102 remove the solders from the soldered sections (a, b and c) on the MECHANISM CONTROL BOARD assembly.
  • Page 15 3.2.2 Removing the top cover (See Fig.3 to 5) • Remove the MECHANISM CONTROL BOARD assembly. Top cover (1) From the front side of the CD MECHANISM assembly, change the hook position of the two roller springs. (See Fig.3.) (2) From the side of the CD MECHANISM assembly, remove the six screws C attaching the top cover.
  • Page 16 3.2.3 Removing the roller (See Fig.6) • Remove the MECHANISM CONTROL BOARD assembly and Roller coller top cover. (1) From the bottom side of the top cover, remove the screw D attaching the gear holder. (2) Remove the R.holder assembly from disc plate, and then Washer take out the roller from R.holder assembly in the direction Gear holder...
  • Page 17 3.2.5 Removing the mechanism section (See Fig.9 and 10) • Remove the MECHANISM CONTROL BOARD assembly and Mechanism section top cover. (1) From the top side of the CD MECHANISM assembly, Mecha frame spring spring remove the two screws F attaching the loading motor assembly.
  • Page 18 3.2.6 Removing the slide cam (L) (See Fig.11 to 13) • Remove the MECHANISM CONTROL BOARD assembly, top Slide cam(L) cover and mechanism section. (1) From the top side of the mecha frame, remove the screw G attaching the cam cover. (See Fig.11.) (2) Take out the cam cover from mecha frame in an upward direction.
  • Page 19 3.2.7 Removing the F.lock lever and slide cam (R) (See Slide cam(R) assembly Fig.14 and 15) • Remove the MECHANISM CONTROL BOARD assembly, top cover and mechanism section. F.lock lever (1) From the top side of the mecha frame, take out the slide cam (R) assembly in an upward direction.
  • Page 20 3.2.9 Removing the clamper assembly (See Fig.17) • Remove the MECHANISM CONTROL BOARD assembly, top cover and mechanism section. (1) From the top side of the mechanism section, release the clamper spring. (2) Move the clamper assembly in the direction of the arrow, and then release the joints (k and m).
  • Page 21 3.2.10 Removing the feed motor (See Fig.18 and 19) • Remove the MECHANISM CONTROL BOARD assembly, top cover, mechanism section and clamper assembly. (1) From the bottom side of the T.M chassis assembly, remove the two screws H attaching the feed motor assembly. (See Trigger arm Feed motor assembly Fig.18.)
  • Page 22 3.2.13 Removing the pickup assembly (See Fig.21 to 22) • Remove the MECHANISM CONTROL BOARD assembly, top cover, mechanism section, clamper assembly and feed motor assembly. Pick up assembly Main shaft Caution: • Do not touch section u on the pickup assembly. (See Fig.21 and 22.) (1) From the bottom side of the T.M chassis assembly, move the pickup assembly in the direction of the arrow from the...
  • Page 23 3.2.14 Removing the spindle motor (See Fig.23 and 24) • Remove the MECHANISM CONTROL BOARD assembly, top cover, mechanism section, clamper assembly, feed motor assembly and pickup assembly. (1) From the top side of the T.M chassis assembly, remove the CD T.table assembly from the spindle motor.

  • Page 24: Adjustment

    Load impedance 20K.(2 Speakers connection) (3) Digital tester Output Level Line out 2.5V (Vol. MAX) (4) Tracking offset meter (5) Test Disc JVC :CTS-1000 Dummy load (6) Extension cable for check Exclusive dummy load should be used for AM,and FM. For FM...

  • Page 25: Troubleshooting

    SECTION 5 TROUBLESHOOTING 16 PIN CORD DIAGRAM (for KD-G140, KD-G240) Black Green Violet Gray Blue White Yellow BL/WH WH/BK GN/BK VI/BK GY/BK BL/WH GN/BK VI/BK WH/BK GY/BK (No.MA372<Rev.002>)1-25...
  • Page 26 16 PIN CORD DIAGRAM (for Asia except KD-G248UF, KD-G398UF) Black Green Violet Gray Blue White Yellow BL/WH WH/BK GN/BK VI/BK GY/BK BL/WH GN/BK VI/BK WH/BK GY/BK 1-26 (No.MA372<Rev.002>)
  • Page 27 16 PIN CORD DIAGRAM (for KD-G248UF, KD-G398UF) Black Green Violet Blue Gray BL/WH White Yellow WH/BK GN/BK VI/BK GY/BK 7 RD RD 7 16 YL MEMORY YL 4 8 BK 6 BL 3 GN 11 GN/BK 2 VI 10 VI/BK 4 WH 12 WH/BK 1 GY...
  • Page 28 16 PIN CORD DIAGRAM (for Europe) Black Green VI/BK Violet GY/BK Blue Gray BL/WH WH/BK White Yellow GN/BK Brown VI/BK GY/BK WH/BK GN/BK MEMORY MEMORY BACKUP DIRECT TO BATTERY +12Volt BL/WH REMOTE ACC + 12Volt GROUND Rear Right Auto Antenna Front Right Line...
  • Page 29 16 PIN CORD DIAGRAM (for KD-G396S) Gray Blue WH/BK Violet GY/BK GN/BK Green Black WH/BK VI/BK White Yellow GN/BK VI/BK GY/BK 16 YL 12 WH/BK 11 GN/BK 10 VI/BK GY/BK (No.MA372<Rev.002>)1-29...
  • Page 30 16 PIN CORD DIAGRAM (for KD-G396S) GN/BK VI/BK WH/BK GN/BK VI/BK GY/BK WH/BK Gray GY/BK Black Violet Green Yellow White 16 YL 12 WH/BK GN/BK 10 VI/BK GY/BK 1-30 (No.MA372<Rev.002>)
  • Page 31 16 PIN CORD DIAGRAM (for KD-G299) Green Black Violet Blue Gray BL/WH White Yellow WH/BK GN/BK VI/BK GY/BK BL/WH 7 RD RD 7 16 YL MEMORY YL 4 8 BK REMOTE 5 BL/WH 3 GN 11 GN/BK 2 VI 10 VI/BK 4 WH 12 WH/BK 1 GY...
  • Page 32 Victor company of Japan, Limited Mobile Entertainment Business Group Mobile Entertainment Category 10-1,1chome,Ohwatari-machi,Maebashi-city,371-8543,Japan (No.MA372<Rev.002>) Printed in Japan...

This manual is also suitable for:

Kd-g245unKd-g245utKd-g245uhKd-g248ufKd-g240jKd-g341e ... Show all