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JVC KD-AR3000 Service Manual
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JVC KD-AR3000 Service Manual

JVC KD-AR3000 Service Manual

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Download this manual See also: Service Manual, Instruction Manual
SERVICE MANUAL
1
2004
MA042
KD-AR3000, KD-LH300
1
PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
2
SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
3
DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
4
ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-27
5
TROUBLE SHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-28
COPYRIGHT © 2004 VICTOR COMPANY OF JAPAN, LIMITED
CD RECEIVER
KD-AR3000
KD-LH300
KD-AR3000
Line input terminal
Amplifier gain control
Power antenna control

TABLE OF CONTENTS

Area suffix
J -------------- Northern America
KD-LH300
No.MA042
2004/1

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Summary of Contents for JVC KD-AR3000

  • Page 1: Table Of Contents

    SERVICE MANUAL CD RECEIVER MA042 2004 KD-AR3000, KD-LH300 Area suffix J -------------- Northern America KD-AR3000 KD-LH300 KD-AR3000 KD-LH300 Line input terminal Amplifier gain control Power antenna control TABLE OF CONTENTS PRECAUTION............... . . 1-3 SPECIFIC SERVICE INSTRUCTIONS .
  • Page 2 Level ±10 dB Frequency Response 40 Hz to 20 000 Hz Signal-to-Noise Ratio 70 dB Line-Out Level/Impedance KD-AR3000 1.5 V/20 kΩ load Line-Out Level/Impedance KD-AR3000 5.0 V/20 kΩ load (full scale) KD-LH300 4.0 V/20 kΩ load (full scale) Output Impedance 1 kΩ...

  • Page 3: 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 4 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 CD players.

  • Page 5: Specific Service Instructions

    SECTION 2 SPECIFIC SERVICE INSTRUCTIONS This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS. (No.MA042)1-5...

  • Page 6: Disassembly

    SECTION 3 DISASSEMBLY Main body 3.1.1 Removing the front panel assembly Front panel assembly (See Fig.1) (1) Push the detach button in the lower right part of the front panel assembly. (2) Remove the front panel assembly. Detach button Fig.1 3.1.2 Removing the heat sink (See Fig.2) (1) From the left side of the main body, remove the two screws...
  • Page 7 3.1.3 Removing the top chassis assembly Bottom chassis assembly (See Figs.3 to 6) • Prior to performing the following procedures, remove the heat sink. Reference: Remove the front panel assembly as required. (1) From the bottom side of the main body, remove the two screws C attaching the top chassis assembly to the bottom chassis assembly.
  • Page 8 3.1.4 Removing the front chassis Top chassis assembly (See Figs.7 and 8) • Prior to performing the following procedure, remove the front panel assembly, heat sink and top chassis assembly. (1) From the both sides of the top chassis assembly, remove the two screws E attaching the front chassis.
  • Page 9 3.1.6 Removing the CD mechanism assembly Top chassis (See Fig.10) • Prior to performing the following procedures, remove the front panel assembly, heat sink and top chassis assembly. Reference: Remove the mechanism control board as required. (1) From the inside of the top chassis assembly, remove the three screws G attaching the CD mechanism assembly.
  • Page 10 Main board (See Fig.13) • Prior to performing the following procedures, remove the front Wire holder Wire (KD-AR3000) panel assembly, heat sink, top chassis assembly and main board. (1) From the rear side of the main board, remove the wires Rear bracket from the rear bracket in the direction of the arrow.
  • Page 11 3.1.10 removing the front board (See Figs.15 to 18) Rear cover assembly • Prior to performing the following procedures, remove the front panel assembly. (1) From the rear side of the front panel assembly, remove the four screws P attaching the rear cover assembly to the front panel assembly.
  • Page 12 CD Mechanism section 3.2.1 Removing the top cover (See Figs.1 and 2) (1) Remove the four 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. Top cover Joints a Fig.1...
  • Page 13 3.2.2 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. (2) Solder the short-circuit point on the pickup.
  • Page 14 3.2.3 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. switch Connector board Pickup Fig.6 Tab c DET switch DET switch wire Tab c...
  • Page 15 3.2.4 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 16 3.2.5 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 17 3.2.6 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 as- sembly in the direction of the arrow to remove it from the chassis rivet assembly.
  • Page 18 3.2.7 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 19 3.2.9 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 20 3.2.11 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 21 3.2.12 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 Joint v the shorter end of the select lock arm spring to the hook w on the top plate.
  • Page 22 3.2.13 Removing the select arm R / link plate Joint c' Link plate Joint r (See Figs.27 and 28) Joint b' Select arm R • Prior to performing the following procedure, remove the top plate assembly. (1) Bring up the select arm R to release from the link plate (joint a') and turn as shown in the figure to release the two Joint b' joints b' and joint c'.
  • Page 23 3.2.15 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 24 3.2.16 Removing the loading gear 5, 6 and 7 Loading gear bracket (See Figs.35 and 36) • Prior to performing the following procedure, remove the top Loading gear 6 cover, chassis unit, pickup unit and top plate assembly. (1) Remove the screw K attaching the loading gear bracket. The loading gear 6 and 7 come off the loading gear brack- (2) Pull out the loading gear 5.
  • Page 25 3.2.17 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 26 3.2.18 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 27: Adjustment

    Exclusive dummy load should be used for AM,and FM. For FM (7) Tracking offset meter dummy load,there is a loss of 6dB between SSG output and (8) Test Disc JVC :CTS-1000 antenna input.The loss of 6dB need not be considered since (9) Extension cable for check direct reading of figures are applied in this working standard.

  • Page 28: Trouble Shooting

    SECTION 5 TROUBLE SHOOTING Feed section Is 5v or 0V at IC621 Is the wiring for IC621 Is 5V present at IC681 Check CD8V. pin 40? pin 40 correct? pin 6? Check the vicinity of IC621. Is 4V present at both Is 6V or 2V present at Check the feed motor sides of the feed motor?
  • Page 29 Signal processing section Compare the L-ch and Is the sound output from No sound from either R-ch to locate the both channels (L, R)? channel. defective point. Normal Is 9V present at IC161 Is 9V present at IC901 Check IC901 and its pin 26? pin 13? peripheral circuits.
  • Page 30 Maintenance of laser pickup Replacement of laser pickup (1) Cleaning the pick up lens Before you replace the pick up, please try to clean the lens Turn of the power switch and, disconnect the with a alcohol soaked cotton swab. power cord.
  • Page 31 16 PIN CORD DIAGRAM for KD-AR3000 OR/WH Black Green Violet BL/WH Blue Gray WH White Yellow WH/BK Orange GN/BK VI/BK GY/BK 16 YL MEMORY 8 BK 7 RD 15 OR/WH 3 GN 11 GN/BK 2 VI 10 VI/BK 4 WH...
  • Page 32 16 PIN CORD DIAGRAM for KD-LH300 OR/WH Black Green BL/WH Violet Gray Blue WH/BK White Yellow GN/BK Orange VI/BK GY/BK OR/WH MEMORY GY/BK BL/WH REMOTE VI/BK WH/BK GN/BK Rear Right Auto Antenna Front Right ACC Line Illuminations Control Front Left Rear Left Ground MEMORY...
  • Page 33 (No.MA042)1-33...
  • Page 34 VICTOR COMPANY OF JAPAN, LIMITED AV & MULTIMEDIA COMPANY MOBILE ENTERTAINMENT CATEGORY 10-1,1chome,Ohwatari-machi,Maebashi-city,371-8543,Japan (No.MA042) Printed in Japan...

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Kd-lh300