Jvc-KDR-420-J-Service-Manual(1) 电路图 维修手册.pdf

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1、SERVICE MANUAL COPYRIGHT 2010 Victor Company of Japan, Limited No.MA478 2010/11 CD RECEIVER MA478201011SERVICE MANUAL KD-R420J, KD-R421E, KD-R421EU, KD-R421EY, KD-R422E, KD-R422EU, KD-R422EY, KD-R424UI, KD-R425U, KD-R425UH, KD-R425UN, KD-R426U, KD-R426UH, KD-R426UN, KD-R426UT, KD-R427EE, KD-R428J, K

2、D-R428UF, KD-R45E, KD-R45EY, KD-R47EE, KD-R527EE COPYRIGHT 2010 Victor Company of Japan, Limited Lead free solder used in the board (material : Sn-Ag-Cu, melting point : 219 Centigrade) Lead free solder used in the board (material : Sn-Cu, melting point : 230 Centigrade) TABLE OF CONTENTS 1PRECAUTIO

3、N. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6 2SPECIFIC SERVICE INSTRUCTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9 3DISASS

4、EMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9 4ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5、. . . 1-13 5TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-17 KD-R420,KD-R424, KD-R425,KD-R426, KD-R428 ONLY KD-R420,KD-R428 ONLY KD-R421,KD-R422 KD-R427, KD-R45, KD-R47, KD-R527 ONLY RadioFans.CN 收音

6、机爱 好者资料库 1-2 (No.MA478) SPECIFICATION Subject to change without notice. Microsoft and Windows Media are either registered trademarks or trademarks of Microsoft Corporation in the United States and/or other countries. KD-R424, KD-R425, KD-R426 AUDIO AMPLIFIER SECTION Maximum Power Output50 W per chan

7、nel Continuous Power Output(RMS)20 W per channel into 4 , 40 Hz to 20 000 Hz at no more than 1% total harmonic distortion. Signal-to-Noise Ratio70 dB Load Impedance4 (4 to 8 allowance) Frequency Response40 Hz to 20 000 Hz Line-Out or Subwoofer-Out Level/Impedance2.5 V/20 k load (full scale) Output I

8、mpedance1 k Other TerminalUSB input terminal, Front auxiliary input jack, Rear auxiliary/Bluetooth adapter input jack, Antenna terminal TUNER SECTION Frequency RangeFM87.5 MHz to 108.0 MHz AM531 kHz to 1611 kHz FM TunerUsable Sensitivity9.3 dBf (0.8 V/75 ) 50 dB Quieting Sensitivity16.3 dBf (1.8 V/7

9、5 ) Alternate Channel Selectivity (400 kHz)65 dB Frequency Response40 Hz to 15 000 Hz Stereo Separation40 dB AM TunerSensitivity/Selectivity20 V/40 dB CD PLAYER SECTION TypeCompact disc player Signal Detection SystemNon-contact optical pickup (semiconductor laser) Number of Channels2 channels (stere

10、o) Frequency Response5 Hz to 20 000 Hz Signal-to-Noise Ratio98 dB Wow and FlutterLess than measurable limit MP3 Decoding Format (MPEG1/2 Audio Layer 3)Max. Bit Rate320 kbps WMA (Windows MediaAudio) Decoding FormatMax. Bit Rate192 kbps USB SECTION USB StandardUSB 1.1, USB 2.0 Data Transfer Rate (Full

11、 Speed)Max. 12 Mbps Compatible DeviceMass Storage Class Compatible File SystemFAT 32/16/12 Playable Audio FormatMP3/WMA Max. CurrentDC 5 V 500 mA GENERAL Power RequirementOperating VoltageDC 14.4 V (11 V to 16 V allowance) Grounding SystemNegative ground Allowable Operating Temperature0C to +40C Dim

12、ensions (W H D):(approx.)Installation Size182 mm 52 mm 159 mm Panel Size188 mm 59 mm 9 mm Mass1.2 kg (excluding accessories) RadioFans.CN 收音机爱 好者资料库 (No.MA478)1-3 SPECIFICATION Subject to change without notice. If a kit is necessary for your car, consult your telephone directory for the nearest car

13、audio speciality shop. Microsoft and Windows Media are either registered trademarks or trademarks of Microsoft Corporation in the United States and/or other countries. KD-R420,KD-R428 AUDIO AMPLIFIER SECTION Power Output20 W RMS 4 Channels at 4 and 1% THD+N Signal-to-Noise Ratio80 dBA (reference : 1

14、 W into 4 ) Load Impedance4 (4 to 8 allowance) Frequency Response40 Hz to 20 000 Hz Line-Out or Subwoofer-Out Level/Impedance 2.5 V/20 k load (full scale) Output Impedance1 k Other TerminalUSB input terminal, Front auxiliary input jack, Rear auxiliary/Bluetooth adapter input jack, Antenna terminal T

15、UNER SECTION Frequency RangeFMwith channel interval set to 200 kHz87.9 MHz to 107.9 MHz with channel interval set to 50 kHz87.5 MHz to 108.0 MHz AMwith channel interval set to 10 kHz530 kHz to 1700 kHz with channel interval set to 9 kHz531 kHz to 1611 kHz FM TunerUsable Sensitivity9.3 dBf (0.8 V/75

16、) 50 dB Quieting Sensitivity16.3 dBf (1.8 V/75 ) Alternate Channel Selectivity (400 kHz) 65 dB Frequency Response40 Hz to 15 000 Hz Stereo Separation40 dB AM TunerSensitivity/Selectivity20 V/40 dB CD PLAYER SECTION TypeCompact disc player Signal Detection SystemNon-contact optical pickup (semiconduc

17、tor laser) Number of Channels2 channels (stereo) Frequency Response5 Hz to 20 000 Hz Signal-to-Noise Ratio98 dB Wow and FlutterLess than measurable limit MP3 Decoding Format (MPEG1/2 Audio Layer 3) Max. Bit Rate320 kbps WMA (Windows MediaAudio) Decoding Format Max. Bit Rate192 kbps USB SECTION USB S

18、tandardUSB 1.1, USB 2.0 Data Transfer Rate (Full Speed)Max. 12 Mbps Compatible DeviceMass Storage Class Compatible File SystemFAT 32/16/12 Playable Audio FormatMP3/WMA Max. CurrentDC 5 V 500 mA GENERAL Power RequirementOperating VoltageDC 14.4 V (11 V to 16 V allowance) Grounding SystemNegative grou

19、nd Allowable Operating Temperature0C to +40C (32F to 104F) Dimensions (W H D):(approx.)Installation Size182 mm 52 mm 159 mm(7-3/16” 2-1/16” 6-5/16”) Panel Size188 mm 59 mm 9 mm(7-7/16” 2-3/8” 3/8”) Mass1.2 kg (2.8 lbs) (excluding accessories) RadioFans.CN 收音机爱 好者资料库 1-4 (No.MA478) SPECIFICATION Subj

20、ect to change without notice. Microsoft and Windows Media are either registered trademarks or trademarks of Microsoft Corporation in the United States and/or other countries. KD-R421, KD-R422, KD-R45 AUDIO AMPLIFIER SECTION Maximum Power OutputFront/Rear50 W per channel Continuous Power Output(RMS)F

21、ront/Rear20 W per channel into 4 , 40 Hz to 20 000 Hz at no more than 1% total harmonic distortion. Load Impedance4 (4 to 8 allowance) Frequency Response40 Hz to 20 000 Hz Signal-to-Noise Ratio70 dB Line-Out or Subwoofer-Out Level/Impedance2.5 V/20 k load (full scale) Output Impedance 600 Other Term

22、inalUSB input terminal, Front auxiliary input jack, Rear auxiliary/Bluetooth adapter input jack, Antenna terminal TUNER SECTION Frequency RangeFM87.5 MHz to 108.0 MHz AMMW531 kHz to 1611 kHz LW153 kHz to 279 kHz FM TunerUsable Sensitivity9.3 dBf (0.8 V/75 ) 50 dB Quieting Sensitivity16.3 dBf (1.8 V/

23、75 ) Alternate Channel Selectivity (400 kHz) 65 dB Frequency Response40 Hz to 15 000 Hz Stereo Separation40 dB MW TunerSensitivity/Selectivity20 V/40 dB LW TunerSensitivity50 V CD PLAYER SECTION TypeCompact disc player Signal Detection SystemNon-contact optical pickup (semiconductor laser) Number of

24、 Channels2 channels (stereo) Frequency Response5 Hz to 20 000 Hz Signal-to-Noise Ratio98 dB Wow and FlutterLess than measurable limit MP3 Decoding Format (MPEG1/2 Audio Layer 3)Max. Bit Rate320 kbps WMA (Windows Media(R) Audio) Decoding FormatMax. Bit Rate192 kbps USB SECTION USB StandardUSB 1.1, US

25、B 2.0 Data Transfer Rate (Full Speed)Max. 12 Mbps Compatible DeviceMass Storage Class Compatible File SystemFAT 32/16/12 Playable Audio FormatMP3/WMA Max. CurrentDC 5 V 500 mA GENERAL Power RequirementOperating VoltageDC 14.4 V (11 V to 16 V allowance) Grounding SystemNegative ground Allowable Opera

26、ting Temperature0C to +40C Dimensions (W H D):(approx.)Installation Size182 mm 52 mm 159 mm Panel Size188 mm 59 mm 9 mm Mass1.2 kg (excluding accessories) (No.MA478)1-5 SPECIFICATION Subject to change without notice. Microsoft and Windows Media are either registered trademarks or trademarks of Micro

27、soft Corporation in the United States and/or other countries. KD-R427, KD-R47, KD-R527 AUDIO AMPLIFIER SECTION Maximum Power OutputFront/Rear50 W per channel Continuous Power Output(RMS)Front/Rear20 W per channel into 4 , 40 Hz to 20 000 Hz at no more than 1% total harmonic distortion. Load Impedanc

28、e4 (4 to 8 allowance) Frequency Response40 Hz to 20 000 Hz Signal-to-Noise Ratio70 dB Line-Out or Subwoofer-Out Level/Impedance2.5 V/20 k load (full scale) Output Impedance 600 Other TerminalUSB input terminal, Front auxiliary input jack, Rear auxiliary/Bluetooth adapter input jack, Antenna terminal

29、 TUNER SECTION Frequency RangeFM87.5 MHz to 108.0 MHz FM-LO65.0 MHz to 74.0 MHz AMMW531 kHz to 1611 kHz LW153 kHz to 279 kHz FM TunerUsable Sensitivity9.3 dBf (0.8 V/75 ) 50 dB Quieting Sensitivity16.3 dBf (1.8 V/75 ) Alternate Channel Selectivity (400 kHz) 65 dB Frequency Response40 Hz to 15 000 Hz

30、 Stereo Separation40 dB MW TunerSensitivity/Selectivity20 V/40 dB LW TunerSensitivity50 V CD PLAYER SECTION TypeCompact disc player Signal Detection SystemNon-contact optical pickup (semiconductor laser) Number of Channels2 channels (stereo) Frequency Response5 Hz to 20 000 Hz Signal-to-Noise Ratio9

31、8 dB Wow and FlutterLess than measurable limit MP3 Decoding Format (MPEG1/2 Audio Layer 3)Max. Bit Rate320 kbps WMA (Windows Media(R) Audio) Decoding FormatMax. Bit Rate192 kbps USB SECTION USB StandardUSB 1.1, USB 2.0 Data Transfer Rate (Full Speed)Max. 12 Mbps Compatible DeviceMass Storage Class C

32、ompatible File SystemFAT 32/16/12 Playable Audio FormatMP3/WMA Max. CurrentDC 5 V 500 mA GENERAL Power RequirementOperating VoltageDC 14.4 V (11 V to 16 V allowance) Grounding SystemNegative ground Allowable Operating Temperature0C to +40C Dimensions (W H D):(approx.)Installation Size182 mm 52 mm 15

33、9 mm Panel Size188 mm 59 mm 9 mm Mass1.2 kg (excluding accessories) 1-6 (No.MA478) SECTION 1 PRECAUTION 1.1Safety Precautions (1) This design of this product contains special hardware and many circuits and components specially for safety purpos- es. For continued protection, no changes should be mad

34、e to the original design unless authorized in writing by the manufacturer. Replacement parts must be identical to those used in the original circuits. Services should be per- formed by qualified personnel only. (2) Alterations of the design or circuitry of the product should not be made. Any design

35、alterations of the product should not be made. Any design alterations or additions will void the manufacturers warranty and will further relieve the manufacture of responsibility for personal injury or property damage resulting therefrom. (3) Many electrical and mechanical parts in the products have

36、 special safety-related characteristics. These characteris- tics are often not evident from visual inspection nor can the protection afforded by them necessarily be obtained by us- ing replacement components rated for higher voltage, watt- age, etc. Replacement parts which have these special safety

37、characteristics are identified in the Parts List of Ser- vice Manual. Electrical components having such features are identified by shading on the schematics and by ( ) on the Parts List in the Service Manual. The use of a substitute replacement which does not have the same safety charac- teristics a

38、s the recommended replacement parts shown in the Parts List of Service Manual may create shock, fire, or other hazards. (4) The leads in the products are routed and dressed with ties, clamps, tubings, barriers and the like to be separated from live parts, high temperature parts, moving parts and/or

39、sharp edges for the prevention of electric shock and fire hazard. When service is required, the original lead routing and dress should be observed, and it should be confirmed that they have been returned to normal, after reassem- bling. (5) Leakage shock hazard testing After reassembling the product

40、, always perform an isola- tion check on the exposed metal parts of the product (an- tenna terminals, knobs, metal cabinet, screw heads, headphone jack, control shafts, etc.) to be sure the product is safe to operate without danger of electrical shock.Do not use a line isolation transformer during t

41、his check. Plug the AC line cord directly into the AC outlet. Using a Leakage Current Tester, measure the leakage current from each exposed metal parts of the cabinet, particular- ly any exposed metal part having a return path to the chassis, to a known good earth ground. Any leakage cur- rent must

42、not exceed 0.5mA AC (r.m.s.). Alternate check method Plug the AC line cord directly into the AC outlet. Use an AC voltmeter having, 1,000 per volt or more sensitivity in the following manner. Connect a 1,500 10W resistor paralleled by a 0.15F AC-type capacitor between an ex- posed metal part and a k

43、nown good earth ground. Measure the AC voltage across the resistor with the AC voltmeter. Move the resistor connection to each exposed metal part, particularly any exposed metal part having a return path to the chassis, and measure the AC voltage across the resistor. Now, reverse the plug in the AC

44、outlet and repeat each measurement. Voltage measured any must not exceed 0.75 V AC (r.m.s.). This corresponds to 0.5 mA AC (r.m.s.). 1.2Warning (1) This equipment has been designed and manufactured to meet international safety standards. (2) It is the legal responsibility of the repairer to ensure t

45、hat these safety standards are maintained. (3) Repairs must be made in accordance with the relevant safety standards. (4) It is essential that safety critical components are replaced by approved parts. (5) If mains voltage selector is provided, check setting for local voltage. 1.3Caution Burrs forme

46、d during molding may be left over on some parts of the chassis. Therefore, pay attention to such burrs in the case of pre- forming repair of this system. 1.4Critical parts for safety In regard with component parts appearing on the silk-screen printed side (parts side) of the PWB diagrams, the parts

47、that are printed over with black such as the resistor ( ), diode ( ) and ICP ( ) or identified by the mark nearby are critical for safety. When replacing them, be sure to use the parts of the same type and rating as specified by the manufacturer. (This regulation dose not Except the J and C version)

48、 Good earth ground Place this probe on each exposed metal part. AC VOLTMETER (Having 1000 ohms/volts, or more sensitivity) 1500 10W 0.15 F AC TYPE (No.MA478)1-7 1.5Preventing static electricity Electrostatic discharge (ESD), which occurs when static electricity stored in the body, fabric, etc. is di

49、scharged, can destroy the laser diode in the traverse unit (optical pickup). Take care to prevent this when performing repairs. 1.5.1 Grounding to prevent damage by static electricity Static electricity in the work area can destroy the optical pickup (laser diode) in devices such as laser products. Be careful to use proper grounding in the area where repairs are being performed. (1) Ground the workbench Ground the workbench by laying conductive material (such as a conductive sheet) or an iron plate over it before placing the