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JVC KD-G227 Schematic Diagrams
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JVC KD-G227 Schematic Diagrams

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SCHEMATIC DIAGRAMS
KD-AR270,KD-G220,KD-G227
KD-G321,KD-G322,KD-G323
KD-G324,KD-G325,KD-G326
Lead free solder used in the board (material : Sn-Ag-Cu, melting point : 219 Centigrade)
Contents
Block diagram
(For KD-AR270,KD-G220,KD-G227,KD-G323,KD-G324,KD-G325,KD-G326)
Standard schematic diagrams
Standard schematic diagrams
Block diagram
(For KD-G321,KD-G322,KD-G327)
Standard schematic diagrams
Standard schematic diagrams
Printed circuit boards
CD RECEIVER
KD-G327
CD-ROM No.SML200512
(For KD-AR270,KD-G220,KD-G323,KD-G324,KD-G325,KD-G326)
(For KD-G227))
(For KD-G321,KD-G322)
(For KD-G327)
COPYRIGHT
2005 Victor Company of Japan, Limited.
KD-AR270,KD-G220
Area suffix
J ------------- Northern America
KD-G227,KD-G327
Area suffix
EE -------- Russian Federation
KD-G321,KD-G322
Area suffix
E ------------- Southern Europe
EX ------------ Northern Europe
EY ------------- Eastern Europe
EU ------------------------- Turkey
KD-G323,KD-G324
Area suffix
UI ---------------------------- India
KD-G325,KD-G326
Area suffix
UT ------------------------- Taiwan
UH ---------------------- Thailand
UN --------------------- Indonesia
U -------------------- Other Areas
2-1
2-2
2-6
2-10
2-11
2-15
2-19 to 21
No.MA236SCH
2005/12

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Summary of Contents for JVC KD-G227

  • Page 1 Lead free solder used in the board (material : Sn-Ag-Cu, melting point : 219 Centigrade) UH ---------------------- Thailand UN --------------------- Indonesia U -------------------- Other Areas Contents Block diagram (For KD-AR270,KD-G220,KD-G227,KD-G323,KD-G324,KD-G325,KD-G326) Standard schematic diagrams (For KD-AR270,KD-G220,KD-G323,KD-G324,KD-G325,KD-G326) Standard schematic diagrams (For KD-G227)) Block diagram...
  • Page 2 Please use enough caution not to see the beam directly or touch it in case of an adjustment or operation check. Difference point KD-AR270 KD-G321 KD-G323,KD-G324 KD-G327 KD-G220,KD-G227 KD-G322 KD-G325,KD-G326 Remote ready Steering remote ready Power antenna Telephone Muting...
  • Page 3 Block diagram (For KD-AR270,KD-G220,KD-G227,KD-G323,KD-G324,KD-G325,KD-G326) Main amplifier & CD servo control section LM,MSW FM/AM CN502 TUNER L-CH VF1, VF2, VT1 CN502 R-CH VT2, LD, MD PICK UP SPOUT Q781 TRACKING+, TRVP LINEOUTMUTE IC501 MUTING Q341, Q351 TRACKING- NRST,NPWDOWN LINE OUT FOCUS+,...
  • Page 4 Standard schematic diagrams (For KD-AR270, KD-G220, KD-G323, KD-G324, KD-G325, KD-G326) Main amplifier section QAU0394-003 QNB0190-001 4.7u R331 R332 R335 C331 Q331 100P 1SS355W-X 2.2K KTD1304-X 0.01 R325 Q321 C321 KTD1304-X 2.2K 1SS355W-X 100P R321 R322 2SA1365/F/-X 1.5k 2SA1530A/QR/-X R351 R352 D351 2.2/50 R355...
  • Page 5 CD servo control section (1/2) D501 1A3G-T1 C586 4.7/25 R584 R588 R590 R586 C588 150p 5.6K R585 C587 C585 4.7/25 R583 5.6K 150p R589 R587 C534 IC981 NJU7772F15-X CN501 QGB2027M4-22S FEED- FEED+ FEED- FEED+ C523 100p RFVDD R537 1.5M VREF R535 SPINDLE- SPINDLE+...
  • Page 6 CD servo control section (2/2) TO SHEET 2 CN503 QGZ2512M1-08 R569 R509 R515 100K C506 0.01 C505 47/16 R517 R510 C518 R513 R508 3.3K R507 R511 R500 R520 2SA1705/ST/-T Q501 CN502 QGZ2512M1-10 Parts are safety assurance parts. TO SHEET 2 When replacing those parts make sure to use the specified one.
  • Page 7 LCD & Key control section IC681 JS686 RPM7338-V4 QSW0976-001 C682 0.012 R687 C681 4.7/6.3 R688 C687 0.022 CJ601 QGZ1601K1-15S LCD1 ILL10V ACC5V REMOCON C664 ENC1 ENC2 DIMOUT 5V_LCD_CLK 5V_LCD_DA 5V_LCD_CE KEY0 KEY1 KEY2 R605 R604 R603 R602 R601 KEY2 2.7k 1.8k 1.2k R661...
  • Page 8 Standard schematic diagrams (For KD-G227) Main amplifier section QAU0394-003 QNB0190-001 4.7u 2.7K 2.7K R331 R332 R335 C331 Q331 100P 2.2K KTD1304-X 1SS355W-X 0.01 R325 Q321 C321 KTD1304-X 1SS355W-X 2.2K 100P R321 R322 2SA1365/F/-X 1.5k 2SA1530A/QR/-X R351 R352 2.2/50 D351 R355...
  • Page 9 CD servo control section (1/2) D501 1A3G-T1 C586 4.7/25 R584 R588 R590 C588 R586 150p 5.6K R585 C587 C585 4.7/25 5.6K R583 150p R589 R587 C534 IC981 NJU7772F15-X CN501 QGB2027M4-22S FEED- FEED+ FEED- FEED+ C523 100p RFVDD R537 1.5M VREF R535 SPINDLE- SPINDLE+...
  • Page 10 CD servo control section (2/2) TO SHEET 2 CN503 QGZ2512M1-08 R569 R509 R515 100K C506 0.01 C505 47/16 R517 R510 C518 R513 R508 3.3K R507 R511 R500 R520 2SA1705/ST/-T Q501 CN502 QGZ2512M1-10 TO SHEET 2 Parts are safety assurance parts. When replacing those parts make sure to use the specified one.
  • Page 11 LCD & Key control section IC681 JS686 QSW0976-001 RPM7338-V4 C682 0.012 R687 C681 4.7/6.3 R688 C687 0.022 CJ601 QGZ1601K1-15S LCD1 QLD0402-001 ILL10V ACC5V REMOCON C664 ENC1 ENC2 DIMOUT 5V_LCD_CLK 5V_LCD_DA 5V_LCD_CE KEY0 KEY1 KEY2 R604 R603 R602 R601 R605 KEY2 2.7k 1.8k 1.2k...
  • Page 12 Block diagram (For KD-G321,KD-G322,KD-G327) Main amplifier & CD servo control section LM,MSW FM/AM CN502 TUNER TU_L VF1, VF2, VT1 CN502 TU_R VT2, LD, MD PICK UP SPOUT Q781 TRACKING+, NPWDOWN TRVP MUTE.CONT IC501 Q341, Q351 MUTING TRACKING- NRST,IRQ LINE OUT LINE OUT FOCUS+, STAT,MLD...
  • Page 13 Standard schematic diagrams (For KD-G321, KD-G322) Main amplifier section QAM0682-001 CN761 QGA2006F1-02 QAU0443-001 C718 R351 R352 100P D722 R355 D351 1SS355W-X C351 Q351 100P UDZW6.2B-X 2.2K KTD1304-X J321 C783 0.082 QNB0190-001 1/50 QNN0773-001 1/50 TU_L R345 D341 1S S355W-X Q341 4.7u 0.22u C341...
  • Page 14 CD servo control section (1/2) D501 1A3G-T1 C586 QTE1H54-225Z R584 R588 R590 C588 1.5K R586 100P R585 C587 R583 100P R589 R587 1.5K C585 QTE1H54-225Z C534 0.0033 IC981 NJU7772F15-X CN501 QGB2027M4-22S FEED- FEED+ FEED- FEED+ C523 100p RFVDD R537 1.5M VREF R535 SPINDLE-...
  • Page 15 CD servo control section (2/2) TO SHEET 2 CN503 QGZ2512M1-08 R569 R509 R515 100K C506 0.01 C505 47/16 IC501 LA6242H-X R517 R510 C518 R513 R508 3.3K R507 R511 R500 R520 2SA1705/ST/-T Q501 CN502 QGZ2512M1-10 TO SHEET 2 Parts are safety assurance parts. When replacing those parts make sure to use the specified one.
  • Page 16 LCD & Key control section IC681 JS686 RPM7338-V4 QSW0976-001 C682 0.012 R687 C681 4.7/6.3 R688 C687 0.022 CJ601 QGZ1601K1-15S LCD1 QLD0419-001 ILL10V ACC5V REMOCON C664 ENC1 ENC2 DIMOUT LCDCLK LCDDA LCDCE KEY0 KEY1 KEY2 R604 R603 R602 R601 R605 KEY2 2.7k 1.8k 1.2k...
  • Page 17 Standard schematic diagrams (For KD-G327) Main amplifier section QAM0682-001 CN761 QGA2006F1-02 QAU0453-001 C718 R351 R352 100P D722 D351 1SS355W-X R355 Q351 C351 UDZW6.2B-X 2.2K 100P KTD1304-X C783 0.082 J321 1/50 QNB0190-001 QNN0773-001 1/50 TU_L D341 1S S355W-X R345 Q341 4.7u 0.22u C341 KTD1304-X...
  • Page 18 CD servo control section (1/2) D501 1A3G-T1 C586 QTE1H54-225Z R584 R588 R590 C588 R586 1.5K 100P R585 C587 R583 100P R589 R587 1.5K C585 QTE1H54-225Z C534 0.0033 IC981 NJU7772F15-X CN501 QGB2027M4-22S FEED- FEED+ FEED- FEED+ C523 100p RFVDD VREF R537 1.5M R535 SPINDLE-...
  • Page 19 CD servo control section (2/2) TO SHEET 2 CN503 QGZ2512M1-08 R569 R509 100K R515 C506 0.01 C505 47/16 IC501 LA6242H-X R517 R510 C518 R513 R508 3.3K R507 R511 R500 R520 2SA1705/ST/-T Q501 CN502 QGZ2512M1-10 Parts are safety assurance parts. TO SHEET 2 When replacing those parts make sure to use the specified one.
  • Page 20 LCD & Key control section IC681 JS686 RPM7338-V4 QSW0976-001 C682 0.012 R687 C681 4.7/6.3 R688 C687 0.022 CJ601 QGZ1601K1-15S LCD1 QLD0388-001 ILL10V ACC5V REMOCON C664 ENC1 ENC2 DIMOUT LCDCLK LCDDA LCDCE KEY0 KEY1 KEY2 R604 R603 R602 R601 R605 KEY2 2.7k 1.8k 1.2k...
  • Page 21 Printed circuit boards Main board (For KD-AR270, KD-G220, KD-G227, KD-G323, KD-G324, KD-G325, KD-G326) Lead free solder used in the board (material : Sn-Ag-Cu, melting point : 219 Centigrade) Q341 R342 R345 Q351 R355 R351 R352 R732 D341 D351 R162 R731...
  • Page 22 Main board (For KD-G321, KD-G322, KD-G327) Lead free solder used in the board (material : Sn-Ag-Cu, melting point : 219 Centigrade) IC71 R342 Q341 R341 R345 R707 D781 C181 C351 D714 R719 B176 R355 D712 R721 C160 C719 B763 D711 C701 R767 D721...
  • Page 23 Switch board Lead free solder used in the board (material : Sn-Ag-Cu, melting point : 219 Centigrade) Forward side Reverse side D630 D635 S613 R644 R643 R646 R601 R645 D631 R636 R635 B635 R605 R604 D653 D652 LCD1 R639 R640 R608 IC661 R607...
  • Page 24 Victor Company of Japan, Limited Mobile Entertainment Business Group Mobile Entertainment Category 10-1,1chome,Ohwatari-machi,Maebashi-city,371-8543,Japan Printed in Japan (No.MA236SCH)

  • Page 25: Table Of Contents

    SERVICE MANUAL CD RECEIVER MA236 2005 KD-AR270,KD-G220,KD-G227,KD-G321, KD-G322,KD-G323,KD-G324,KD-G325, KD-G326,KD-G327 KD-G321,KD-G322 KD-AR270,KD-G220 Area suffix Area suffix J ------------- Northern America E ------------- Southern Europe EX ------------ Northern Europe EY ------------- Eastern Europe KD-G227,KD-G327 EU ------------------------- Turkey Area suffix KD-G323,KD-G324 EE -------- Russian Federation...
  • Page 26 SPECIFICATION KD-AR270/KD-G220 AUDIO AMPLIFIER SECTION 18 W RMS × 4 Channels at 4 Ω and [< or =] 1% THD+N Power Output 80 dBA (reference: 1 W into 4 Ω) Signal to Noise Ratio 4 Ω (4 Ω to 8 Ω allowance) Load Impedance Tone Control Range Bass ±10 dB at 100 Hz...
  • Page 27 KD-G227 AUDIO AMPLIFIER SECTION Maximum Power Output Front 45 W per channel Rear 45 W per channel 17 W per channel into 4 Ω, 40 Hz to 20 000 Hz at no more than Continuous Power Output Front (RMS) 0.8% total harmonic distortion.
  • Page 28 KD-G321/KD-G322 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) 0.8% total harmonic distortion. 19 W per channel into 4 Ω, 40 Hz to 20 000 Hz at no more than Rear 0.8% total harmonic distortion.
  • Page 29 KD-G323/KD-G324 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) 0.8% total harmonic distortion. 19 W per channel into 4 Ω, 40 Hz to 20 000 Hz at no more than Rear 0.8% total harmonic distortion.
  • Page 30 KD-G325/KD-G326 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) 0.8% total harmonic distortion. 19 W per channel into 4 Ω, 40 Hz to 20 000 Hz at no more than Rear 0.8% total harmonic distortion.
  • Page 31 KD-G327 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) 0.8% total harmonic distortion. 19 W per channel into 4 Ω, 40 Hz to 20 000 Hz at no more than Rear 0.8% total harmonic distortion.

  • Page 32: Precautions

    SECTION 1 PRECAUTIONS 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 33 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 34 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 35: Specific Service Instructions

    SECTION 2 SPECIFIC SERVICE INSTRUCTIONS Difference point KD-AR270 KD-G322 KD-G323,KD-G324 KD-G327 KD-G220,KD-G227 KD-G321 KD-G325,KD-G326 Remote ready Steering remote ready Power antenna Telephone Muting CD mechanism assembly For CD mechanism, please refer mechanism amnual No. MY003. (No.MA236)1-11...

  • Page 36: Disassembly

    SECTION 3 DISASSEMBLY Main body section 3.1.1 Removing the front panel assembly (See Fig.11) (1) Push the detach button in the lower right part of the front panel assembly and remove the front panel assembly. Front panel assembly Detach button Fig.1 3.1.2 Removing the bottom cover (See Fig.2)
  • Page 37 (For KD-AR270,KD-G220,KD-G227,KD-G323, screws F attaching the rear bracket on the back side of the KD-G324,KD-G325,KD-G326,KD-G327 ) main body. (For KD-AR270, KD-G220, KD-G227, KD- Rear bracket G323, KD-G324, KD-G325, KD-G326, KD-G327) (2) Remove the four screws D, three screws E and two screws F attaching the rear bracket on the back side of the main body.
  • Page 38 3.1.6 Removing the main board (See Figs.5 and 6) • Remove the front panel assembly, bottom cover and side pan- Main board CN501 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.
  • Page 39 3.1.8 Removing 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.

  • Page 40: Adjustment

    (3) Digital tester Output Level Line out 2.0V (Vol. MAX) (4) Tracking offset meter (5) Test Disc JVC :CTS-1000 Dummy load (6) Extension cable for check Exclusive dummy load should be used for AM,and FM. For FM EXTSH002-22P × 1...

  • Page 41: Troubleshooting

    SECTION 5 TROUBLESHOOTING Feed section Is 4V present at both Check the feed motor. sides of the feed motor? Check the connections Is the voltage output at between the feed motor pin 4 and pin 5 of IC501? and IC501. Is the power supply Is the voltage input at pin Check IC501.
  • Page 42 Spindle section Does the RF signal appear Is the RF waveform at Is the disk rotated? at pin 39 of IC521? pin 39 of IC521 distorted? Check the spindle motor Is the voltage output at Check the circuits in and its wiring. pin 6 and pin 7 of IC501? the vicinity of IC521 or the pickup.
  • Page 43 Signal processing section 5.5.1 Signal processing section (For KD-AR270,KD-G220,KD-G227,KD-G323,KD-G324,KD-G325 and KD-G326) Is the sound output from Normal both channels (L, R)? Is the audio signal (including sampling Is the audio signal output No sound from either Is 9V present at pin 24...
  • Page 44 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 45 16 PIN CORD DIAGRAM (for AR270,G220) Black Green BL/WH Violet Blue Gray WH/BK White Yellow GN/BK VI/BK GY/BK MEMORY 16 YL 8 BK 7 RD 3 GN 11 GN/BK 2 VI 10 VI/BK 4 WH 12 WH/BK 1 GY 9 GY/BK REMOTE 5 BL/WH Rear Right...
  • Page 46 16 PIN CORD DIAGRAM (for G227) Green Black Violet Blue Gray BL/WH White Yellow WH/BK GN/BK VI/BK GY/BK BL/WH 7 RD RD 7 16 YL MEMORY YL 4 8 BK REMOTE 5 BL/WH 3 GN 11 GN/BK 2 VI 10 VI/BK 4 WH 12 WH/BK 1 GY...
  • Page 47 5.10 16 PIN CORD DIAGRAM (for G323,G324,G325,G326) Black Green Violet BL/WH Blue Gray WH White Yellow WH/BK GN/BK VI/BK GY/BK MEMORY 16 YL 8 BK 7 RD 3 GN 11 GN/BK 2 VI 10 VI/BK 4 WH 12 WH/BK 1 GY 9 GY/BK 5 BL/WH REMOTE...
  • Page 48 5.11 16PIN CORD DIAGRAM (for G321,G322,G327) Black Green Violet Gray Blue BL/WH White Yellow WH/BK Brown GN/BK VI/BK GY/BK BL/WH RD 7 7 RD 16 YL YL 4 8 BK 5 BL/WH 13 BR 3 GN 11 GN/BK 2 VI 10 VI/BK 4 WH 12 WH/BK...
  • Page 49 (No.MA236)1-25...
  • Page 50 Victor Company of Japan, Limited Mobile Entertainment Business Group Mobile Entertainment Category 10-1,1chome,Ohwatari-machi,Maebashi-city,371-8543,Japan (No.MA236) Printed in Japan...

This manual is also suitable for:

Kd-ar270Kd-g321Kd-g220Kd-g322Kd-g324Kd-g323 ... Show all