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JVC KD-G401 Service Manual
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JVC KD-G401 Service Manual

JVC KD-G401 Service Manual

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3 7 63 1515 0
SERVICE MANUAL
1
2004
MA051
TE
L 13942296513
1
PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
2
SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
3
DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
4
ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-24
www
5
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-25
.
CD RECEIVER
KD-G401

TABLE OF CONTENTS

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COPYRIGHT © 2004 VICTOR COMPANY OF JAPAN, LIMITED
http://www.xiaoyu163.com
2 9
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3
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1 3
1 5
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9 4
2 8
Area suffix
E ----------- Continental Europe
EX --------------- Central Europe
0 5
8
2 9
9 4
2 8
m
No.MA051
9 9
9 9
2004/1

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  • Page 1: Table Of Contents

    3 7 63 1515 0 SERVICE MANUAL CD RECEIVER MA051 2004 KD-G401 Area suffix E ----------- Continental Europe EX --------------- Central Europe L 13942296513 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 than Continuous Power Output Front (RMS)

  • 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.MA051)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 (See Fig.1) (1) Push the detach button in the lower right part of the front Front panel assembly 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.4) • Prior to performing the following procedure, remove the front panel assembly as required. (1) Remove the screw B and two screws C 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. 7) • Prior to performing the following procedure, remove the front panel assembly, bottom cover, side panel, rear bracket and main board. • Remove the front chassis assembly as required. (1) Remove the three screws H attaching the CD mechanism assembly on the top chassis.
  • 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: No.ma051)1

    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: No.ma051)1

    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: See Fig.

    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

    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: No.ma051)1

    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: Troubleshooting

    http://www.xiaoyu163.com 3 7 63 1515 0 SECTION 5 TROUBLESHOOTING Feed section Is 5v or 0V at IC541 Is the wiring for IC541 Is 5V present at IC501 Check 8V. pin 40? pin 40 correct? pin 20? Check the vicinity of IC541.
  • Page 26 http://www.xiaoyu163.com 3 7 63 1515 0 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 31? pin 10?
  • 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 of the power switch and, disconnect the with a alcohol soaked cotton swab.
  • Page 28 http://www.xiaoyu163.com 3 7 63 1515 0 16 pin cord diagram Black Green VI/BK Violet GY/BK Blue Gray WH/BK BL/WH White Yellow GN/BK Brown VI/BK GY/BK WH/BK L 13942296513 GN/BK MEMORY MEMORY BACKUP DIRECT TO BATTERY +12Volt REMOTE BL/WH ACC + 12Volt GROUND Rear Right...
  • Page 29 http://www.xiaoyu163.com 3 7 63 1515 0 L 13942296513 u163 (No.MA051)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.MA051) Printed in Japan http://www.xiaoyu163.com...
  • Page 31 3 7 63 1515 0 SCHEMATIC DIAGRAMS CD RECEIVER KD-G401 CD-ROM No.SML200401 Area suffix E ----------- Continental Europe EX --------------- Central Europe L 13942296513 Contents Block diagram Standard schematic diagrams Printed circuit boards 2-5 to 7 u163 No.MA051SCH 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 http://www.xiaoyu163.com 3 7 6 3 1 5 1 5 0 Block diagram Main amplifier & CD servo control section FM/AM LEFT.REAR TUNER RIGHT.REAR CJ321 FM/AM,SEEK/STOP,SD/ST LINE OUT SQ ,MONO,SM,AFCK RDSDA IC71 SW1,SW2,PSW RDSCL DETECTOR POSITION SET SPINDLE+ LM0,LM1,RST SWITCH TU.L LEFT.FRONT SPINDLE- VREF...
  • Page 34 http://www.xiaoyu163.com Standard schematic diagrams 3 7 6 3 1 5 1 5 0 RB160M-30-X D243 Main amplifier section R248 R244 C243 R243 0.047 180k R245 C241 1/50 R242 R241 IC301 C242 22/16 LA47515 Q241 QAU0313-001 2SD601A/R/-X LEVEL R793 R161 D240 C312 220k 1SS355-X...
  • Page 35 http://www.xiaoyu163.com CD servo control section 3 7 6 3 1 5 1 5 0 R504 R502 8.2k C508 R586 6.8k R503 4.7k 0.01 R581 8.2k R585 CD.R 47/10 C582 R517 C511 R584 270P R506 8.2k C501 C581 Q501 8.2k 3300P C580 4.7/25 AOUTR-...
  • Page 36 http://www.xiaoyu163.com 3 7 6 3 1 5 1 5 0 LCD & Key control section JS686 IC681 QSW0863-003 RPM7338-V4 C682 0.012 R687 C681 4.7/6.3 R688 C687 0.022 R681 CJ601 VMC0335-001 LCD1 QLD0299-001 ACC5V REMOCON ENC1 ENC2 DIMOUT LCDCL 1 3 9 4 2 2 9 6 5 1 3 LCDDA LCDCE KEY0...
  • Page 37 http://www.xiaoyu163.com 3 7 63 1515 0 Printed circuit boards Main board (1/2) Forward side C910 IC901 Q341 J321 D331 C914 R331 L901 D901 C913 J801 R892 Q331 D891 D892 C904 Q891 C902 C163 CN901 C891 Q321 Q351 R901 C905 R341 C173 C318 C903...
  • Page 38 http://www.xiaoyu163.com 3 7 63 1515 0 Main board (2/2) Reverse side J321 CN901 C910 D971 J801 D972 IC901 R971 C321 C911 L901 C802 C914 R972 C905 C913 C904 D901 C915 C318 C902 C712 R901 R273 R882 C319 C308 D902 D273 C907 C906 C919...
  • Page 39 http://www.xiaoyu163.com 3 7 63 1515 0 Front board Forward side R626 D651 JS686 D636 S611 D649 R608 R607 R612 D637 R611 D648 R651 R652 S614 LCD1 D647 R605 R603 D644 D645 D638 D639 D646 D640 D641 D642 D643 S605 S604 S602 S601 S608...
  • 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.MA051SCH) http://www.xiaoyu163.com...
  • Page 41 3 7 63 1515 0 PARTS LIST [ KD-G401] * All printed circuit boards and its assemblies are not available as service parts. Area suffix E ----------- Continental Europe EX --------------- Central Europe L 13942296513 - Contents - 3- 2 Exploded view of general assembly and parts list (Block No.M1)
  • Page 42 http://www.xiaoyu163.com 3 7 63 1515 0 Exploded view of general assmbly and parts list Block No. L 13942296513 u163 http://www.xiaoyu163.com...
  • Page 43 http://www.xiaoyu163.com 3 7 63 1515 0 General assembly Block No. [M][1][M][M]  Symbol No. Part No. Part Name Description Local GE10043-210A TOP CHASSIS GE40135-001A EARTH PLATE GE30938-003A SIDE PANEL GE30393-002A BOTTOM COVER FSMA3004-203 INSULATOR QYSDST2604Z SCREW 2.6mm x 4mm(x3) FSKZ4005-001 SCREW (x2) QYSDST2606Z...
  • Page 44 http://www.xiaoyu163.com 3 7 63 1515 0 CD mechanism assembly and parts list Block No. TN-2001-1011 Grease TNG-87 GP-501MK CFD-005Z GP-501A L 13942296513 u163 http://www.xiaoyu163.com...
  • Page 45 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 46 http://www.xiaoyu163.com 3 7 63 1515 0 Electrical parts list Main board  Symbol No. Part No. Part Name Description Local Block No. [0][1][0][0] D784 UDZS11B-X Z DIODE  Symbol No. Part No. Part Name Description Local D891 1SS355-X SI DIODE D892 1SS355-X SI DIODE...
  • Page 47 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 C192 QEKJ1CM-107Z E CAPACITOR 100uF 16V M C545 NCB31HK-103X C CAPACITOR 0.01uF 50V K C193 QEKJ1CM-107Z E CAPACITOR 100uF 16V M C546...
  • 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 C915 NCB31CK-104X C CAPACITOR 0.1uF 16V K R405 NRSA63J-222X MG RESISTOR 2.2kΩ 1/16W J C919 QEKJ1CM-106Z E CAPACITOR 10uF 16V M R406...
  • 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 R586 NRSA63J-682X MG RESISTOR 6.8kΩ 1/16W J QQL244J-4R7Z INDUCTIOR 4.7uH J R587 NRSA63J-102X MG RESISTOR 1kΩ 1/16W J L401 NQL114K-470X INDUCITOR...
  • Page 50 http://www.xiaoyu163.com 3 7 63 1515 0  Symbol No. Part No. Part Name Description Local R603 NRSA63J-122X MG RESISTOR 1.2kΩ 1/16W J R604 NRSA63J-182X MG RESISTOR 1.8kΩ 1/16W J R605 NRSA63J-272X MG RESISTOR 2.7kΩ 1/16W J R606 NRSA63J-821X MG RESISTOR 820Ω...
  • Page 51 http://www.xiaoyu163.com 3 7 63 1515 0 <MEMO> L 13942296513 u163 3-11 http://www.xiaoyu163.com...
  • Page 52 http://www.xiaoyu163.com 3 7 63 1515 0 Packing materials and accessories parts list Block No. A2A3A4 A6A7A8A9 L 13942296513 KIT:A10 A12 A13 u163 3-12 http://www.xiaoyu163.com...
  • Page 53 http://www.xiaoyu163.com 3 7 63 1515 0 Packing and accessories Block No. [M][3][M][M]  Symbol No. Part No. Part Name Description Local ENG GER FRE GET0195-001A INST SHEET GET0195-002A INST SHEET SPA ITA POL RUS E SWE DAN FIN GET0195-003A INST SHEET GET0195-005A INSTALL MANUAL GET0195-006A...

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