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JVC KD-G305 Service Manual
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JVC KD-G305 Service Manual

JVC KD-G305 Service Manual

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3 7 63 1515 0
SERVICE MANUAL
1
2004
MA037
TE
L 13942296513
1
PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
2
SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
3
DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
4
ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-24
5
TROUBLE SHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-25
www
.
http://www.xiaoyu163.com
CD RECEIVER
KD-G305
ATT
SOUND
U
R
SOURCE
F
D
VOL
VOL

TABLE OF CONTENTS

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COPYRIGHT © 2003 VICTOR COMPANY OF JAPAN, LIMITED
http://www.xiaoyu163.com
2 9
8
Q Q
3
6 7
1 3
1 5
U ----------- Other Areas
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9 4
2 8
0 5
8
2 9
9 4
2 8
Area Suffix
m
No.MA037
9 9
9 9
2004/1

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Summary of Contents for JVC KD-G305

  • Page 1: Table Of Contents

    3 7 63 1515 0 SERVICE MANUAL CD RECEIVER MA037 2004 KD-G305 SOUND SOURCE L 13942296513 Area Suffix U ----------- Other Areas TABLE OF CONTENTS PRECAUTION............... . . 1-3 SPECIFIC SERVICE INSTRUCTIONS .
  • Page 2 http://www.xiaoyu163.com 3 7 63 1515 0 SPECIFICATION AUDIO AMPLIFIER SECTION Maximum Power Output Front 50 W per channel Rear 50 W per channel 19 W per channel into 4 Ω, 40 Hz to 20 000 Hz at no more Continuous Power Output (RMS) Front than 0.8% total harmonic distortion.

  • Page 3: Precaution

    http://www.xiaoyu163.com 3 7 63 1515 0 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 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 CD players.

  • Page 5: Specific Service Instructions

    http://www.xiaoyu163.com 3 7 63 1515 0 SECTION 2 SPECIFIC SERVICE INSTRUCTIONS This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS. L 13942296513 u163 (No.MA037)1-5 http://www.xiaoyu163.com...

  • Page 6: Disassembly

    http://www.xiaoyu163.com 3 7 63 1515 0 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 and remove the front panel assembly. Detach button Fig.1 3.1.2 Removing the bottom cover...
  • Page 7 http://www.xiaoyu163.com 3 7 63 1515 0 3.1.4 Removing the side panel (See Fig.5) • Prior to performing the following procedure, remove the front panel assemblyÅ@as required. (1) Remove the screw C and two screws D attaching the side panel on the left side of the main body, and remove the side panel.
  • Page 8 http://www.xiaoyu163.com 3 7 63 1515 0 3.1.7 Removing the CD mechanism assembly (See Fig. 8) • Prior to performing the following procedure, remove the front panel assembly, bottom cover, front chassis assembly, side panel, rear bracket and main board . (1) Remove the three screws J attaching the CD mechanism assembly.
  • Page 9 http://www.xiaoyu163.com 3 7 63 1515 0 CD Mechanism Assembly 3.2.1 Removing the top cover (See Figs.1 and 2) (1) Remove the two 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.
  • Page 10 http://www.xiaoyu163.com 3 7 63 1515 0 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.
  • Page 11 http://www.xiaoyu163.com 3 7 63 1515 0 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. DET switch Connector board Pickup...
  • Page 12 http://www.xiaoyu163.com 3 7 63 1515 0 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 13 http://www.xiaoyu163.com 3 7 63 1515 0 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 14 http://www.xiaoyu163.com 3 7 63 1515 0 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 assembly in the direction of the arrow to remove it from the chassis rivet assembly.
  • Page 15 http://www.xiaoyu163.com 3 7 63 1515 0 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 Part e the pu.
  • Page 16 http://www.xiaoyu163.com 3 7 63 1515 0 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 17 http://www.xiaoyu163.com 3 7 63 1515 0 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.
  • Page 18 http://www.xiaoyu163.com 3 7 63 1515 0 3.2.12 Reassembling the mode sw. / select lock arm Select lock arm spring (See Figs.24 to 26) Hook w REFERENCE: 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 19 http://www.xiaoyu163.com 3 7 63 1515 0 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.
  • Page 20 http://www.xiaoyu163.com 3 7 63 1515 0 3.2.15 Removing the loading roller assembly Loading roller assembly (See Figs.31 to 33) • 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 21 http://www.xiaoyu163.com 3 7 63 1515 0 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.
  • Page 22 http://www.xiaoyu163.com 3 7 63 1515 0 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 23 http://www.xiaoyu163.com 3 7 63 1515 0 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 24: 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 25: Trouble Shooting

    http://www.xiaoyu163.com 3 7 63 1515 0 SECTION 5 TROUBLE SHOOTING Feed section Is the voltage output at Is the wiring for IC561 Is 5V present at IC561 Check CD 8V. IC561 pin 28 5v or 0V pin 28 correct? pin 21? Check the vicinity of IC561.
  • Page 26 http://www.xiaoyu163.com 3 7 63 1515 0 Signal processing section Is the sound output from No sound from either Compare the L-ch and both channels (L, R)? channel. R-ch to locate the defective point. Normal Is 9V present at IC161 pin Check the vicinity of the Q301 audio power supply.
  • Page 27 http://www.xiaoyu163.com 3 7 63 1515 0 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 off the power switch and,disconnect the with a alcohol soaked cotton swab. power cord from the ac outlet.
  • Page 28 http://www.xiaoyu163.com 3 7 63 1515 0 16 pin cord diagram OR/WH Green Black BL/WH Violet Gray Blue WH/BK White Yellow GN/BK Orange VI/BK GY/BK OR/WH MEMORY L 13942296513 GY/BK BL/WH REMOTE VI/BK WH/BK GN/BK Rear Right Auto Antenna Front Right ACC Line Illuminations Control Front Left...
  • Page 29 http://www.xiaoyu163.com 3 7 63 1515 0 L 13942296513 u163 (No.MA037)1-29 http://www.xiaoyu163.com...
  • Page 30 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.MA037) Printed in Japan http://www.xiaoyu163.com...
  • Page 31 3 7 63 1515 0 SCHEMATIC DIAGRAMS CD RECEIVER KD-G305 CD-ROM No.SML200401 Area suffix U --------------------- Other Areas L 13942296513 SOUND SOURCE Contents Block diagram Standard schematic diagrams Printed circuit boards 2-5 to 7 u163 No.MA037SCH COPYRIGHT 2004 VICTOR COMPANY OF JAPAN, LTD.
  • Page 32 http://www.xiaoyu163.com 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 33 CD CHANGER CONTROL KEY0 S601 to S617 KEY1 KEY MATRIX IC602 SI,SO KEY2 REMOCON I/O,INT LCDSCK KEY0 LCDSO IC801 CH.SCK KEY1 LCDCE JVC BUS KEY2 REMOCON REMOCON ENC1 ENC2 LCD1 ENC1 ENC2 IC601 EN601 COM1 ENCODER COM2 LCDSCK DRIVER COM3 LCDSO...
  • Page 34 http://www.xiaoyu163.com Standard schematic diagrams 3 7 6 3 1 5 1 5 0 Main amplifier section Q781 R331 R332 QAU0311-001 UN2111-X MA111-X R335 2.2K C331 Q331 100P MUTE CJ321 D331 2SD1781K/QR/-X QNB0100-002 QNN0519-001 D321 R325 Q321 2.2K 4.7u C321 2SD1781K/QR/-X 100P MA111-X R321...
  • Page 35 http://www.xiaoyu163.com 3 7 6 3 1 5 1 5 0 CD servo section C568 C573 100/10 47/6.3 C569 0.012 R579 Q561 2SA2093/QR/-T C536 C571 D561 1A3G-T1 IC521 CD8V MN6627482WA (SHEET 1) CD.RESET STATUS IC561 SUBQ LA6242H-X SQCK TLOCK FLOCK CD.SENSE R581 C582 MDATA...
  • Page 36 http://www.xiaoyu163.com LCD & Key control section 3 7 6 3 1 5 1 5 0 EN601 IC602 RPM7338-V4 QSW0793-001 R682 R683 CN601 NNZ0087-001 REMOCON ACC5V LCD1 ENC1 ENC2 LCDCE LCDSO To CN701 LCDSCK (SHEET 1) KEY2 KEY1 KEY0 R670 1 3 9 4 2 2 9 6 5 1 3 R672 R606 R605...
  • Page 37 http://www.xiaoyu163.com 3 7 63 1515 0 Printed circuit boards Main board Forward side IC901 J801 R882 CJ321 Q331 Q782 C901 Q321 Q351 Q341 L901 D901 C903 CN901 D786 R911 C881 C917 B903 C319 R335 B904 R355 R902 C909 C905 C918 R325 C189 C199...
  • Page 38 http://www.xiaoyu163.com 3 7 63 1515 0 Main board Reverse side L901 C305 C306 C307 C308 CJ321 C901 CN901 C331 R332 C902 J801 R881 R331 C351 IC901 R352 R351 C332 C342 R903 C906 C907 C903 C801 C321 D901 C341 C311 R322 C917 C319 R342...
  • Page 39 http://www.xiaoyu163.com 3 7 63 1515 0 Front board Reverse side Forward side D607 R635 R634 D603 R661 D604 R660 D605 R611 R601 R602 R610 S616 D606 R636 R637 S617 R632 R648 R633 S608 R649 R643 R645 R642 R644 R671 R672 Q640 R673 R674...
  • Page 40 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 Printed in Japan (No.MA037SCH) http://www.xiaoyu163.com...
  • Page 41 3 7 63 1515 0 PARTS LIST [ KD-G305 ] * All printed circuit boards and its assemblies are not available as service parts. Area suffix U --------------------- Other Areas L 13942296513 - Contents - 3- 2 Exploded view of general assembly and parts list (Block No.M1) 3- 5 CD mechanism assembly and parts list (Block No.MB)
  • Page 42 http://www.xiaoyu163.com 3 7 63 1515 0 Exploded view of general assembly and parts list Block No. L 13942296513 Front board u163 http://www.xiaoyu163.com...
  • Page 43 http://www.xiaoyu163.com 3 7 63 1515 0 Main board L 13942296513 u163 LCD1 http://www.xiaoyu163.com...
  • Page 44 SSM BUTTON GE31025-001A SEARCH BTN GE31041-004A EJECT BUTTON GE31250-001A EJECT COVER GE40220-001A LIGHT SHIELD GE31042-004A DETACH BTN GE31045-001A RIM COVER GE40204-002A JVC BADGE VKW3001-330 COMP.SPRING GE40202-004A COMP.SPRING GE10081-001A REAR COVER VKZ4777-001 MINI SCREW (x4) GE31035-001A LCD CASE GE31036-001A LCD LENS...
  • Page 45 http://www.xiaoyu163.com 3 7 63 1515 0 CD mechanism assembly and parts list Grease Block No. TNG-87 TN-2001-1011 GP-501MK CFD-005Z GP-501A L 13942296513 u163 http://www.xiaoyu163.com...
  • Page 46 http://www.xiaoyu163.com 3 7 63 1515 0 CD mechanism Block No. [M][B][M][M]  Symbol No. Part No. Part Name Description Local 30320101T FRAME 30320102T TOP COVER 30320115T DANPER F 30320116T DANPER R 303205505T CHASSIS RIVET 303205503T CHANGE P. RVT A 303205301T CLAMPER ASS'Y 303205302T SPINDLE MOTOR A...
  • Page 47 http://www.xiaoyu163.com 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 NDC31HJ-121X C CAPACITOR 120pF 50V J QEKJ1AM-227Z E CAPACITOR 220uF 10V M IC161 TEA6320T-X...
  • Page 48 http://www.xiaoyu163.com 3 7 63 1515 0  Symbol No.  Symbol No. Part No. Part Name Description Local Part No. Part Name Description Local C514 NCB31EK-104X C CAPACITOR 0.1uF 25V K C915 NCB31EK-104X C CAPACITOR 0.1uF 25V K C515 QEKJ1AM-107Z E CAPACITOR 100uF 10V M C916...
  • Page 49 http://www.xiaoyu163.com 3 7 63 1515 0  Symbol No.  Symbol No. Part No. Part Name Description Local Part No. Part Name Description Local R512 NRSA63J-393X MG RESISTOR 39kΩ 1/16W J R732 NRSA63J-102X MG RESISTOR 1kΩ 1/16W J R513 NRSA63J-823X MG RESISTOR 82kΩ...
  • Page 50 http://www.xiaoyu163.com 3 7 63 1515 0 Front board  Symbol No. Part No. Part Name Description Local Block No. [0][2][0][0] R670 NRSA63J-0R0X MG RESISTOR 0Ω 1/16W J  Symbol No. Part No. Part Name Description Local R672 NRS181J-471X MG RESISTOR 470Ω...
  • Page 51 http://www.xiaoyu163.com 3 7 63 1515 0 Packing materials and accessories parts list Block No. L 13942296513 Packing and accessories  Symbol No. Block No. [M][3][M][M] Part No. Part Name Description Local  Symbol No. Part No. Part Name Description Local A 11 FSJB3002-00C HARD CASE...