JVC KD-G279UR Service Manual Download Page 17 | Manualshive

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Contents

Block diagram
Standard schematic diagrams
Printed circuit boards

2-1
2-2
2-6 to 7

CD-ROM No.SML200604

SCHEMATIC DIAGRAMS

CD RECEIVER

No.MA266SCH

2006/4

KD-G279UR

COPYRIGHT 2006 Victor Company of Japan, Limited.

Lead free solder used in the board (material : Sn-Ag-Cu, melting point : 219 Centigrade)

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Summary of Contents for KD-G279UR

Page 1: ...No MA266 2006 4 CD RECEIVER MA266 2006 4 KD G279UR Lead free solder used in the board material Sn Ag Cu melting point 219 Centigrade TABLE OF CONTENTS 1 PRECAUTIONS 1 3 2 SPECIFIC SERVICE INSTRUCTIONS 1 6 3 DISASSEMBLY 1 7 4 ADJUSTMENT 1 10 5 TROUBLESHOOTING 1 11 ...

Page 2: ...y 11 3 dBf 1 0 µV 75 Ω 50 dB Quieting Sensitivity 16 3 dBf 1 8 µV 75 Ω Alternate Channel Selectivity 400 kHz 65 dB Frequency Response 40 Hz to 15 000 Hz Stereo Separation 35 dB Capture Ratio 1 5 dB AM Tuner Sensitivity 20 µV Selectivity 35 dB CD PLAYER SECTION Type Compact disc player Signal Detection System Non contact optical pickup semiconductor laser Number of channels 2 channels stereo Freque...

Page 3: ... 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: ...tical pickup The tester s internal power source can easily destroy the laser diode 1 3 Handling the traverse unit optical pickup 1 Do not subject the traverse unit optical pickup to strong shocks as it is a sensitive complex unit 2 Cut off the shorted part of the flexible cable using nippers etc after replacing the optical pickup For specific details refer to the replacement procedure in the text ...

Page 5: ...o function 6 CAUTION Use of controls adjustments or performance of procedures other than those specified here in may result in hazardous radiation exposure REPRODUCTION AND POSITION OF LABELS Please use enough caution not to see the beam directly or touch it in case of an adjustment or operation check WARNING LABEL CAUTION Visible and Invisible laser radiation when open and interlock failed or def...

Page 6: ...1 6 No MA266 SECTION 2 SPECIFIC SERVICE INSTRUCTIONS This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS ...

Page 7: ...ight side and joint c on the back side of the main body then remove the bottom cover from the main body Note When releasing the joints using a screwdriver do not damage the main board Fig 2 3 1 3 Removing the front chassis assembly See Fig 3 Remove the front panel assembly and bottom cover 1 Remove the two screws A on the both sides of the main body 2 Release the joint d and joint e on the both si...

Page 8: ...rear bracket 3 1 6 Removing the main board See Figs 5 and 6 Remove the front panel assembly bottom cover and side pan el Reference Remove the front chassis assembly as required 1 Remove the three screws D attaching the rear bracket on the back side of the main body See Fig 5 2 Remove the two screws G attaching the main board See Fig 6 3 Disconnect the connector CN501 on the main board from the mai...

Page 9: ...moving the switch board See Figs 8 to 10 Remove the front panel assembly 1 Remove the four screws J on the back side of the front pan el assembly See Fig 8 2 Release the joints f and remove the rear cover See Fig 9 3 Release the joint g and take out the switch board from the front panel assembly See Fig 10 Fig 8 Fig 9 Fig 10 3 2 CD mechanism assembly For CD mechanism please refer mechanism amnual ...

Page 10: ...oad there is a loss of 6dB between SSG output and antenna input The loss of 6dB need not be considered since direct reading of figures are applied in this working standard How to connect the extension cable for adjusting Caution Be sure to attach the heat sink and rear bracket onto the power amplifier IC and regulator IC respectively before supply the power If voltage is applied without attaching ...

Page 11: ...een IC501 and IC521 YES NO Is the power supply present at pin 37 pin 49 pin 53 pin 56 and pin 72 of IC521 YES Check IC521 NO Check the connections of CD8V power supply When the lens is moving Does the S search waveform appear at IC501 pins 8 and 9 4V Check the pickup and its connections YES NO Is the voltage input at pin 15 of IC501 YES NO Is the voltage output at pin 13 of IC521 NO YES Check the ...

Page 12: ...nput at pin 17 of IC501 YES NO Is the voltage output at pin 5 of IC521 Check the connections between IC501 and IC521 YES NO Is the power supply present at pin 3 pin 12 and pin 21 of IC501 YES Check IC501 NO Check the connections of CD8V power supply Is the power supply present at pin 37 pin 49 pin 53 pin 56 and pin 72 of IC521 YES Check IC521 NO Check the connections of CD8V power supply When the ...

Page 13: ...current 5 7 Replacement of laser pickup No sound from either channel Is 9V present at pin 24 of IC161 Compare the L ch and R ch to locate the defective point Is the sound output from both channels L R YES NO Is the audio signal including sampling output components output to pins 1 and 7 of IC581 during playback Normal YES NO YES NO Check IC581 and its peripheral circuits NO Is 9V present at pin 13...

Page 14: ...H BK GN BK BK Black RD Red BL Blue WH White GN Green VI Violet GY Gray YL Yellow 7 RD 16 YL 8 BK 5 BL WH 3 GN 11 GN BK 2 VI 10 VI BK 4 WH 12 WH BK 1 GY 9 GY BK RD RD 7 YL 4 8 5 7 8 1 2 5 3 6 4 RR Rear Right FR FL RL Rear Left Front Right Front Left REMOTE Remote out ACC MEMORY ACC Line GND Memory Backup Battery Ground ACC MEMORY GND REMOTE RL RL RR RR FL FL FR FR BL WH WH BK GN BK VI BK GY BK ...

Page 15: ... No MA266 1 15 ...

Page 16: ... No MA266 Mobile Entertainment Business Group Mobile Entertainment Category 10 1 1chome Ohwatari machi Maebashi city 371 8543 Japan Victor Company of Japan Limited VPT Printed in Japan ...

Page 17: ...s Printed circuit boards 2 1 2 2 2 6 to 7 CD ROM No SML200604 SCHEMATIC DIAGRAMS CD RECEIVER No MA266SCH 2006 4 KD G279UR COPYRIGHT 2006 Victor Company of Japan Limited Lead free solder used in the board material Sn Ag Cu melting point 219 Centigrade ...

Page 18: ...r on some parts of the chassis Therefore pay attention to such burrs in the case of preforming repair of this system Safety precaution Please use enough caution not to see the beam directly or touch it in case of an adjustment or operation check ...

Page 19: ...TE LINEOUTMUTE ANT SW1 SW2 PSW LM MSW FEED SPINDLE VF1 VF2 VT1 VT2 LD MD SP FEED TRK FOCUS SPK BATTERY EO FM_AM FM OSC IFC SEEK STOP S METER SD ST MONO IFC CONT KEY0 to 2 5V_LCD_CLK 5V_LCD_DA 5V_LCD_CE REMOCON ENC1 ENC2 DIMOUT OUTL OUTR STAT IRQ STAT IRQ LINE OUT REAR FOCUS TRACKING COIL TRACKING FOCUS CD mechanism control section Function section Main amplifier section S601 to S616 KEY MATRIX KEY...

Page 20: ... 0 47 47k 0 47 47 16 100 16 47k 27K 1 8W 27K 1 8W 27K 1 8W 27K 1 8W RT1N141C X 0 KTD1304 X 4 7K AN80T71 0 47 2SA1530A QR X 4 7k 1SS355W X 2 2K 1 5K 0 01 820 820 4 7u 2 2 50 QGZ1601J1 15 QQR1695 001 47k 47K 2 2K 2SC3928A QR X 2SA1530A QR X 100 1SS355W X 3 3K 3 3K 0 1 CRS03 W QAU0394 003 LA4743K 0 1 100P 100P KTD1304 X KTD1304 X QMFZ047 150 T 0 1 0 1 1SS355W X 2 2K 100 1k 820 2SA1365 F X 820 2 2K 10...

Page 21: ...90 C591 C592 10K QAX0714 001Z MN6627945EE 1A3G T1 0 1 8200p 8200p 2 2k 2 2k 2 2k 1K 1K 4 7k 0 082 1000p 220 6 3 82k 0 1 0 015 680p 0 1 4 7k 4 7k 0 33 0 33 0 022 0 022 180P 560P 30K 27k 150 1K 1K 68k 3 3K 3 3K 2 2K 5 6K 27K 0 15k 0 15k 27K 5 6K 150p NJU7772F15 X 150p QGB2027M4 22S 1M 220 1 5M 100p 4 7 25 4 7 25 SN74LVC2G07V X QGZ2512M1 08 QGZ2512M1 10 1k 0 1 47 6 3 47 6 3 47 6 3 0 1 22k 820 3300p 3...

Page 22: ...k 0 022 QGZ1601K1 15S 2 2K 51K 0 022 680p 10K 10K 10K 820 820 820 1 8k 1 2k 820 1 2k 1 8k 2 2K 820 1 2k 470 QLD0419 001 0 180K 1SS355W X 390 10K 470 470 330 470 100 0 022 330 330 NSPW310BS BRST 470 UDZW6 2B X 390 820 SML 310LT MN X NSPW310BS BRST 47K RT1N141C X 1K 2SA1365 F X 0 0 0 470 KEY2 KEY2 ENC1 KEY1 ENC2 CE CLK DATA REMOCON 5V_LCD_CLK KEY1 DIMOUT ILL10V KEY0 S51 S52 ACC5V KEY0 5V_LCD_CE 5V_L...

Page 23: ...1 C510 C509 R505 R568 C508 R519 R506 C502 R501 R502 R503 R512 C513 R514 C515 R516 C517 R518 C503 C504 QGZ2512M1 10 QGZ2512M1 08 22 22 11k 2SA1705 ST T 15k 3 3K 100K 27K 15K 10k 15k 15k 47 16 0 01 68p LA6242H X 0 1 0 1 2200p 0 1 220 6 3 0 047 0 047 11k 7 5k 0 047 47k 30k 0 1 8 2k 8 2k 5 1k 5 6K 6800p 5 6k 0 0012 1K 0 0018 5 6K 220 10 0 1 ...

Page 24: ...3 R4 R5 R6 B917 R9 R10 R11 R12 R13 R14 R16 R31 R32 R33 R34 R35 R81 R82 R91 R92 R748 R164 R166 R167 R174 R176 R177 R191 R301 R302 R303 R351 R352 R355 R341 R342 R345 R331 R332 R335 R321 R322 R325 R540 R541 R542 R554 R565 R556 R532 R531 R530 R523 R559 R558 C523 R529 R528 R527 R526 R525 R524 R535 R537 R561 R562 R583 R584 R585 R586 R587 R588 R589 R590 R591 R593 R592 R594 R710 B19 B535 R705 R706 R707 R7...

Page 25: ...1 R642 S601 S602 S603 S604 S605 S606 S607 S608 S609 S610 S611 S612 S613 S614 S615 S616 LCD1 B633 D644 B634 B635 R635 R636 B636 C661 C662 C663 C664 C681 C682 C686 C687 CJ601 D652 D653 D661 D662 D681 IC661 IC681 JS686 Q670 Q671 R601 R612 R630 R631 R632 R643 R644 R645 R646 R649 R650 R661 R662 R663 R664 R665 R666 R667 R668 R670 R671 R672 R681 R682 R686 R687 R688 C501 C502 C503 C504 C505 C506 C508 C509...

Page 26: ... No MA266SCH Printed in Japan VPT Mobile Entertainment Business Group Mobile Entertainment Category 10 1 1chome Ohwatari machi Maebashi city Gumma ken 371 8543 Japan Victor Company of Japan Limited ...

Page 27: ...ice parts Please refer to the mechanism manual model TN2007 1003 No MY005 for the CD mechanism Contents Exploded view of general assembly and parts list Block No M1 Electrical parts list Block No 01 03 Packing materials and accessories parts list Block No M3 KD G279UR 3 2 3 5 3 10 MA266 ...

Page 28: ...3 2 Exploded view of general assembly and parts list Block No M M M 1 C Switch board A B 8 5 5 3 4 4 4 2 9 1 28 27 17 16 24 25 23 22 49 21 26 20 19 18 29 30 31 31 13 10 9 15 14 32 35 34 ...

Page 29: ...3 3 M M B Main board A C A Function board 1 31 13 10 9 11 12 15 7 14 32 38 35 34 39 33 36 37 40 46 41 45 42 44 6 43 47 48 ...

Page 30: ...1970 001A SEL BUTTON 21 GE40218 045A SHEET 22 GE20188 001A PRESET BUTTON 23 GE31971 001A SEARCH BUTTON 24 GE31972 001A DETACH BUTTON 25 GE40202 013A COMP SPRING 26 GE31973 001A EJECT BUTTON 27 GE40323 003A SHEET 28 GE31974 006A VOL KNOB 29 GE40127 003A SPRING 30 GE10140 002A REAR COVER 31 VKZ4777 010 MINI SCREW x4 32 GE31975 001A LCD CASE 33 GE31977 001A LENS CASE 34 GE31976 001A LCD LENS 35 GE402...

Page 31: ...M C168 QFV91HJ 474Z MF CAPACITOR 0 47uF 50V J C169 QFV91HJ 474Z MF CAPACITOR 0 47uF 50V J C175 QEKJ1EM 475Z E CAPACITOR 4 7uF 25V M C176 QEKJ1EM 475Z E CAPACITOR 4 7uF 25V M C178 QFV91HJ 474Z MF CAPACITOR 0 47uF 50V J C179 QFV91HJ 474Z MF CAPACITOR 0 47uF 50V J C183 QTE1H54 225Z E CAPACITOR 2 2uF 50V C184 QTE1H54 225Z E CAPACITOR 2 2uF 50V C191 QTE1A57 107Z E CAPACITOR 100uF 10V C192 NCB31HK 103X ...

Page 32: ...l No Part No Part Name Description Local R522 NRSA63J 221X MG RESISTOR 220Ω1 16W J R523 NRSA63J 472X MG RESISTOR 4 7kΩ1 16W J R524 NRS181J 222X MG RESISTOR 2 2kΩ 1 8W J R525 NRSA63J 102X MG RESISTOR 1kΩ 1 16W J R526 NRSA63J 102X MG RESISTOR 1kΩ 1 16W J R527 NRSA63J 222X MG RESISTOR 2 2kΩ 1 16W J R528 NRSA63J 222X MG RESISTOR 2 2kΩ 1 16W J R529 NRSA63J 222X MG RESISTOR 2 2kΩ 1 16W J R530 NRSA63J 47...

Page 33: ... 2 7kΩ 1 16W J R606 NRSA63J 821X MG RESISTOR 820Ω 1 16W J R607 NRSA63J 821X MG RESISTOR 820Ω 1 16W J R608 NRSA63J 122X MG RESISTOR 1 2kΩ 1 16W J R609 NRSA63J 182X MG RESISTOR 1 8kΩ 1 16W J R610 NRSA63J 272X MG RESISTOR 2 7kΩ 1 16W J R611 NRSA63J 821X MG RESISTOR 820Ω 1 16W J R612 NRSA63J 821X MG RESISTOR 820Ω 1 16W J R613 NRSA63J 122X MG RESISTOR 1 2kΩ 1 16W J R630 NRSA63J 821X MG RESISTOR 820Ω 1 ...

Page 34: ...6W J R511 NRSA63J 153X MG RESISTOR 15kΩ 1 16W J R512 NRSA63J 562X MG RESISTOR 5 6kΩ 1 16W J R513 NRSA63J 103X MG RESISTOR 10kΩ 1 16W J R514 NRSA63J 562X MG RESISTOR 5 6kΩ 1 16W J R515 NRSA63J 153X MG RESISTOR 15kΩ 1 16W J R516 NRSA63J 102X MG RESISTOR 1kΩ 1 16W J R517 NRSA63J 153X MG RESISTOR 15kΩ 1 16W J R518 NRSA63J 562X MG RESISTOR 5 6kΩ 1 16W J R519 NRSA63J 473X MG RESISTOR 47kΩ 1 16W J R520 N...

Page 35: ...3 9 MEMO ...

Page 36: ...3 10 Packing materials and accessories parts list Block No M M M 3 No additional supplemental order of WARRANTY CARDs are available KIT A2 A1 P1 P3 A8 A9 A10 A11 A12 A14 P4 A13 P2 A3 A4 A5 A6 A7 ...

Page 37: ...ANUAL A 4 INSTALL MANUAL A 5 TROUBLE SHOOTIN A 6 WARRANTY CARD A 7 REGIS CARD A 8 VKZ4027 202 PLUG NUT A 9 VKH4871 003 MOUNT BOLT A 10 VKZ4328 003 LOCK NUT A 11 QYWWS53A008ZA WASHER 0mm 5 3mm x A 12 GE40130 002A HOOK x2 A 13 FSJB3002 00E HARD CASE A 14 QAM0089 002 ISO CABLE KIT SRW 385U SCREW KIT A8 A9 A10 A11 A12 P 1 POLY BAG P 2 POLY BAG P 3 POLY BAG P 4 POLY BAG ...

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