JVC KD-G502 Service Manual

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SERVICE MANUAL
4
2004
MA092
1
PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
2
SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
3
DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
4
ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
5
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
CD RECEIVER
KD-G502
TABLE OF CONTENTS
COPYRIGHT © 2004 VICTOR COMPANY OF JAPAN, LIMITED
Area suffix
E ----------- Continental Europe
EX --------------- Central Europe
EU----------------------------Turkey
No.MA092
2004/4

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Summary of Contents for JVC KD-G502

  • Page 1 SERVICE MANUAL CD RECEIVER MA092 2004 KD-G502 Area suffix E ----------- Continental Europe EX --------------- Central Europe EU----------------------------Turkey TABLE OF CONTENTS PRECAUTION............... . . 1-3 SPECIFIC SERVICE INSTRUCTIONS .
  • Page 2 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. 19 W per channel into 4 Ω, 40 Hz to 20 000 Hz at no more Rear than 0.8% total harmonic distortion.
  • 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 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 6: Specific Service Instructions

    SECTION 2 SPECIFIC SERVICE INSTRUCTIONS Please refer to "KD-G501 No.MA038" about this section. SECTION 3 DISASSEMBLY Please refer to "KD-G501 No.MA038" about this section. SECTION 4 ADJUSTMENT Please refer to "KD-G501 No.MA038" about this section. SECTION 5 TROUBLESHOOTING Please refer to "KD-G501 No.MA038" about this section. 1-6 (No.MA092)
  • Page 7 (No.MA092)1-7...
  • Page 8 VICTOR COMPANY OF JAPAN, LIMITED AV & MULTIMEDIA COMPANY CAR ELECTRONICS CATEGORY 10-1,1chome,Ohwatari-machi,Maebashi-city,371-8543,Japan (No.MA092) Printed in Japan...
  • Page 9: Schematic Diagrams

    SCHEMATIC DIAGRAMS CD RECEIVER KD-G502 CD-ROM No.SML200404 Area suffix E ------------- Continental Europe EX ---------------- Central Europe EU---------------------------- Turkey Contents Block diagram Standard schematic diagrams 2-2 to 4 Printed circuit boards 2-5 to 7 No.MA092SCH COPYRIGHT 2004 VICTOR COMPANY OF JAPAN, LTD.
  • Page 10: Safety Precaution

    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 11: Block Diagram

    CH.R PICK UP CD CHANGER CD L.P.F. CONTROL SO,I/O MP3STBY S601 to S617 INT,SCK KEY0 MP3CLK IC801 CH.SCK KEY MATRIX KEY1 MP3DOUT JVC BUS IC602 KEY2 MP3RESET REMOCON LCDCL MP3REQ LRCK KEY0 IC401 LCDDA MP3DIN AOUT KEY1 MP3/WMA LSI LCDCE KEY2 &...
  • Page 12: Standard Schematic Diagrams

    Standard schematic diagrams Main amplifier section RB160M-30-X D243 R248 R244 C243 R243 0.047 180k R245 C241 1/50 R242 R241 IC301 C242 22/16 LA47515 Q241 QAU0313-001 2SD601A/QR/-X LEVEL R793 R161 D240 MA111-X C312 220k 4.7u 0.47 R312 QNB0100-002 1/50 8.2K R311 C311 R171 MA111-X...
  • Page 13 CD servo control section R504 R502 8.2k R586 6.8k FEED- FEED- R503 4.7k R581 8.2k R585 CD.R C582 47/10 R584 270P 0.01 FEED+ FEED+ C513 R518 C501 C581 Q501 C508 3300P 0.01 C580 4.7/25 AOUTR- R582 8.2k C589 4.7/25 AOUTR+ R583 8.2k IC581...
  • Page 14 LCD & Key control section IC602 EN601 QSW0863-003 RPM7338-V4 R682 R683 CN601 NNZ0087-001 REMOCON ACC5V LCD1 QLD0298-001 ENC1 ENC2 LCDCE LCDDA To CN701 LCDCL (SHEET 1) KEY2 KEY1 KEY0 R670 DIM_CON DIMOUT R672 R606 R605 R604 R603 R602 R601 KEY2 3.9K 2.7K 1.8K...
  • Page 15 Printed circuit boards Main board Forward side C910 C361 C371 IC901 J321 Q341 Q331 C914 R331 L901 D901 C913 J801 C904 R892 D891 C908 D892 C891 Q891 C163 Q321 CN901 C173 Q351 C318 R901 R271 C905 R261 C903 R783 D781 R258 R257 Q781...
  • Page 16 Main board Reverse side C971 C331 C910 D971 J801 D972 J321 IC901 R971 C321 C911 C712 L901 CN901 C914 R903 R972 C904 C905 C913 D902 D901 C318 C915 C902 C919 C319 R273 C906 R882 R901 C308 C908 C907 C802 C315 R272 D273 D784...
  • Page 17 Front board Forward side D631 D619 D616 R614 D614 S615 R613 EN601 D645 D615 D618 D646 S601 LCD1 IC602 R603 R604 D621 D620 D601 D602 D608 D609 D610 D611 D612 D613 S609 S603 S605 S606 S610 S611 S602 S604 S612 S607 Reverse side C682...
  • Page 18 VICTOR COMPANY OF JAPAN, LIMITED AV & MULTIMEDIA COMPANY CAR ELECTRONICS CATEGORY 10-1,1chome,Ohwatari-machi,Maebashi-city,371-8543,Japan Printed in Japan (No.MA092SCH)
  • Page 19: Parts List

    PARTS LIST [ KD-G502 ] * All printed circuit boards and its assemblies are not available as service parts. Area suffix E ----------- Continental Europe EX --------------- Central Europe EU-----------------------------Turkey - 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 20 Exploded view of general assembly and parts list Block No. Front board LCD1...
  • Page 21 Block No. Front board LCD1...
  • Page 22 SSM BTN GE31025-002A SEARCH BTN GE31041-003A EJECT BUTTON GE31250-001A EJECT COVER GE40220-001A LIGHT SHEILD GE31042-003A DETACH BUTTON GE31045-001A RIM COVER GE40204-001A JVC BADGE VKW3001-330 COMP.SPRING GE40202-004A COMP.SPRING GE10081-002A REAR COVER VKZ4777-001 MINI SCREW (x4) GE31035-001A LCD CASE GE31036-001A LCD LENS...
  • Page 23 CD mechanism assembly and parts list Block No. Grease TN-2001-1011 TNG-87 GP-501MK CFD-005Z GP-501A...
  • Page 24 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 30320502T CLAMPER ARM 30320503T...
  • Page 25: Electrical Parts List

    Electrical parts list Main board  Symbol No. Part No. Part Name Description Local Block No. [0][1][0][0] D704 MA8062/M/-X Z DIODE  Symbol No. Part No. Part Name Description Local D705 MA8062/M/-X Z DIODE D706 MA8062/M/-X Z DIODE D707 MA8062/M/-X Z DIODE IC31 TB2118F-X...
  • Page 26  Symbol No. Part No. Part Name Description Local  Symbol No. Part No. Part Name Description Local C163 QEKJ1HM-105Z E CAPACITOR 1uF 50V M C502 NCB31HK-103X C CAPACITOR 0.01uF 50V K C164 NCB31HK-822X C CAPACITOR 8200pF 50V K C503 QEKJ1AM-107Z E CAPACITOR 100uF 10V M...
  • Page 27  Symbol No. Part No. Part Name Description Local  Symbol No. Part No. Part Name Description Local C713 NCB31EK-103X C CAPACITOR 0.01uF 25V K NRSA63J-472X MG RESISTOR 4.7kΩ 1/16W J C716 NCB31EK-104X C CAPACITOR 0.1uF 25V K R161 NRSA63J-224X MG RESISTOR 220kΩ...
  • Page 28  Symbol No. Part No. Part Name Description Local  Symbol No. Part No. Part Name Description Local R513 NRSA63J-152X MG RESISTOR 1.5kΩ 1/16W J R737 NRSA63J-0R0X MG RESISTOR 0Ω 1/16W J R514 NRSA02J-220X MG RESISTOR 22Ω 1/10W J R738 NRSA63J-472X MG RESISTOR 4.7kΩ...
  • Page 29: Front Board

     Symbol No. Part No. Part Name Description Local  Symbol No. Part No. Part Name Description Local QZW0010-001 STYLE PIN R638 NRSA02J-271X MG RESISTOR 270Ω 1/10W J S701 QSW0451-001 DETECT SW R640 NRSA02J-271X MG RESISTOR 270Ω 1/10W J S702 QSW0451-001 DETECT SW R642...
  • Page 30 Packing materials and accessories parts list Block No. A2, A3, A4, A5, A6, A7, A8, A9, KIT: A10, A11,A12, A13, A14 3-12...
  • Page 31 Packing and Accessories Block No. [M][3][M][M]  Symbol No. Part No. Part Name Description Local ENG SPA FRE GET0193-004B INST BOOK GET0193-001B INST BOOK E,EX GET0193-002B INST BOOK SPA ITA POL RUS E GET0193-009B INST BOOK SWE DAN FIN GET0193-003B INST BOOK GET0193-005B INSTALL MANUAL...

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