Jvc-KDG-646-UN-Service-Manual 电路图 维修手册.pdf

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1、SERVICE MANUAL COPYRIGHT 2007 Victor Company of Japan, Limited No.MA377 2007/12 CD RECEIVER MA377200712SERVICE MANUAL KD-G351E, KD-G351EX, KD-G351EY, KD-G351EU, KD-G357EE, KD-G440J, KD-G441E, KD-G441EX, KD-G441EY, KD-G441EU, KD-G447EE, KD-G644UI, KD-G645U, KD-G645UN, KD-G645UT, KD-G645UH, KD-G646U,

2、KD-G646UN, KD-G646UT, KD-G646UH, KD-G648UF COPYRIGHT 2007 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 1PRECAUTION. . .

3、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8 2SPECIFIC SERVICE INSTRUCTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11 3DISASSEMBLY .

4、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11 4ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-

5、27 5TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-28 except KD-G441 KD-G351 KD-G447 KD-G357 only KD-G441 KD-G351 KD-G447 KD-G357 only KD-G440 RadioFans.CN 收音机爱 好者资料库 1-2 (No.MA377) SPECIFICATION KD-

6、G441/KD-G351 Design and specifications are subject to change without notice. AUDIO AMPLIFIER SECTION Maximum Power OutputFront/Rear50 W per channel Continuous Power Output (RMS)Front/Rear19 W per channel into 4 40 Hz to 20 000 Hz at no more than 0.8% total harmonic distortion Load Impedance4 (4 to 8

7、 allowance) Tone Control RangeBass12 dB at 60 Hz Middle12 dB at 1 kHz Treble12 dB at 10 kHz Frequency Response40 Hz to 20 000 Hz Signal to Noise Ratio70 dB Audio Output Level (for KD-G441)Line-Out Level/Impedance2.5 V/20 k load (full scale) Output Impedance1 k Subwoofer-Out Level/Impedance2.5 V /20

8、k load (full scale) Other TerminalsAUX (auxiliary) input jack USB input jack Steering wheel remote input (forKD-G441) TUNER SECTION Frequency RangeFM87.5 MHz to 108.0 MHz AMMW: 522 kHz to 1 620 kHz LW: 144 kHz to 279 kHz FM TunerUsable Sensitivity11.3 dBf (1.0 V/75 ) 50 dB Quieting Sensitivity16.3 d

9、Bf (1.8 V/75 ) Alternate Channel Selectivity (400 kHz)65 dB Frequency Response40 Hz to 15 000 Hz Stereo Separation30 dB MW TunerSensitivity/Selectivity20 V/35 dB LW TunerSensitivity50 V CD PLAYER SECTION TypeCompact disc player Signal Detection SystemNon-contact optical pickup (semiconductor laser)

10、Number of Channels2 channels (stereo) Frequency Response5 Hz to 20 000 Hz Dynamic Range96 dB 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 Audio) Decoding FormatMax. Bit Rate320 kbps USB SECTI

11、ON USB StandardUSB 1.1, USB 2.0 Data Transfer Rate (Full Speed)Max. 12 Mbps StorageLess than 8 GB (1 partition type) Compatible DeviceMass storage class (except HDD) Compatible File SystemFAT 32/16/12 Playable Audio FormatMP3/WMA Max. Current500 mA GENERAL Power RequirementOperating VoltageDC 14.4 V

12、 (11 V to 16 V allowance) Grounding SystemNegative ground Allowable Operating Temperature0C to +40C Dimensions (W H D)Installation Size (approx.)182 mm 52 mm 160 mm Panel Size (approx.)188 mm 58 mm 13 mm Mass (approx.)1.3 kg (excluding accessories) RadioFans.CN 收音机爱 好者资料库 (No.MA377)1-3 KD-G447/KD-G3

13、57 Design and specifications are subject to change without notice. AUDIO AMPLIFIER SECTION Maximum Power OutputFront/Rear50 W per channel Continuous Power Output (RMS)Front/Rear19 W per channel into 4 40 Hz to 20 000 Hz at no more than 0.8% total harmonic distortion Load Impedance4 (4 to 8 allowance

14、) Tone Control RangeBass12 dB at 60 Hz Middle12 dB at 1 kHz Treble12 dB at 10 kHz Frequency Response40 Hz to 20 000 Hz Signal to Noise Ratio70 dB Other TerminalsAUX (auxiliary) input jack, USB input jack TUNER SECTION Frequency RangeFM1/FM287.5 MHz to 108.0 MHz FM365.00 MHz to 74.00 MHZ AMMW: 522 kH

15、z to 1 620 kHz LW: 144 kHz to 279 kHz FM TunerUsable Sensitivity11.3 dBf (1.0 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 Stereo Separation30 dB MW TunerSensitivity/Selectivity20 V/35 dB LW TunerSensitivity50

16、 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 Dynamic Range96 dB Signal-to-Noise Ratio98 dB Wow and FlutterLess than measurable limit MP3 Decoding Format:

17、(MPEG1/2 Audio Layer 3)Max. Bit Rate320 kbps WMA (Windows Media Audio) Decoding FormatMax. Bit Rate320 kbps USB SECTION USB StandardUSB 1.1, USB 2.0 Data Transfer Rate (Full Speed)Max. 12 Mbps StorageLess than 8 GB (1 partition type) Compatible DeviceMass storage class (except HDD) Compatible File S

18、ystemFAT 32/16/12 Playable Audio FormatMP3/WMA Max. Current500 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)Installation Size (approx.)182 mm 52 mm 160 mm Panel Size (approx

19、.)188 mm 58 mm 13 mm Mass (approx.)1.3 kg (excluding accessories) RadioFans.CN 收音机爱 好者资料库 1-4 (No.MA377) KD-G440 Design and specifications are subject to change without notice. AUDIO AMPLIFIER SECTION Power Output20 W RMS 4 Channels at 4 and or = 1% THD+N Signal-to-Noise Ratio80 dBA (reference: 1 W

20、into 4 ) Load Impedance4 (4 to 8 allowance) Tone Control RangeBass/Mid-range/Treble12 dB at 60 Hz/1 kHz/10 kHz Frequency Response40 Hz to 20 000 Hz Line-Out Level/Impedance2.5 V/20 k load (full scale) Output Impedance1 k Subwoofer-Out Level/Impedance2.5 V/20 k load (full scale) Other TerminalAUX (au

21、xiliary) input jack USB input jack Steering wheel remote input TUNER SECTION Frequency RangeFM87.5 MHz to 107.9 MHz (with channel interval set to 100 kHz or 200 kHz) 87.5 MHz to 108.0 MHz (with channel interval set to 50 kHz) AM530 kHz to 1 710 kHz (with channel interval set to 10 kHz) 531 kHz to 1

22、602 kHz (with channel interval set to 9 kHz) FM TunerUsable Sensitivity11.3 dBf (1.0 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 Stereo Separation35 dB AM TunerSensitivity/Selectivity20 V/35 dB CD PLAYER SECT

23、ION TypeCompact disc player Signal Detection SystemNon-contact optical pickup (semiconductor laser) Number of Channels2 channels (stereo) Frequency Response5 Hz to 20 000 Hz Dynamic Range96 dB Signal-to-Noise Ratio98 dB Wow and FlutterLess than measurable limit MP3 Decoding Format: (MPEG1/2 Audio La

24、yer 3)Max. Bit Rate320 kbps WMA (Windows Media Audio) Decoding FormatMax. Bit Rate320 kbps USB SECTION USB StandardUSB 1.1, USB 2.0 Data Transfer Rate (Full Speed)Max. 12 Mbps StorageLess than 8 GB (1 partition type) Compatible DeviceMass storage class (except HDD) Compatible File SystemFAT 32/16/12

25、 Playable Audio FormatMP3/WMA Max. Current500 mA GENERAL Power RequirementOperating VoltageDC 14.4 V (11 V to 16 V allowance) Grounding SystemNegative ground Allowable Operating Temperature0C to +40C (32F to 104F) Dimensions (W H D): (approx.)Installation Size182 mm 52 mm 160 mm (7-3/16” 2-1/16” 6-5

26、/16”) Panel Size188 mm 58 mm 6 mm (7-7/16” 2-5/16” 1/4”) Mass1.3 kg (2.9 lbs) (excluding accessories) (No.MA377)1-5 KD-G644 Design and specifications are subject to change without notice. AUDIO AMPLIFIER SECTION Maximum Power OutputFront/Rear50 W per channel Continuous Power Output (RMS)Front/Rear19

27、 W per channel into 4 40 Hz to 20 000 Hz at no more than 0.8% total harmonic distortion. Load Impedance4 (4 to 8 allowance) Tone Control RangeBass12 dB at 60 Hz Mid-range12 dB at 1 kHz Treble12 dB at 10 kHz Frequency Response40 Hz to 20 000 Hz Signal-to-Noise Ratio70 dB Line-Out Level/Impedance2.5 V

28、/20 k load (full scale) Output Impedance1 k Subwoofer-Out Level/Impedance2.5 V/20 k load (full scale) Other TerminalAUX (auxiliary) input jack, USB input jack TUNER SECTION Frequency RangeFM87.5 MHz to 108.0 MHz AM531 kHz to 1 602 kHz FM TunerUsable Sensitivity11.3 dBf (1.0 V/75 ) 50 dB Quieting Sen

29、sitivity16.3 dBf (1.8 V/75 ) Alternate Channel Selectivity (400 kHz)65 dB Frequency Response40 Hz to 15 000 Hz Stereo Separation30 dB AM TunerSensitivity/Selectivity20 V/35 dB CD PLAYER SECTION TypeCompact disc player Signal Detection SystemNon-contact optical pickup (semiconductor laser) Number of

30、Channels2 channels (stereo) Frequency Response5 Hz to 20 000 Hz Dynamic Range96 dB 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 Audio) Decoding FormatMax. Bit Rate320 kbps USB SECTION USB Sta

31、ndardUSB 1.1, USB 2.0 Data Transfer Rate (Full Speed)Max. 12 Mbps StorageLess than 8 GB (1 partition type) Compatible DeviceMass storage class (except HDD) Compatible File SystemFAT 32/16/12 Playable Audio FormatMP3/WMA Max. Current500 mA GENERAL Power RequirementOperating VoltageDC 14.4 V (11 V to

32、16 V allowance) Grounding SystemNegative ground Allowable Operating Temperature0C to +40C Dimensions (W H D): (approx.)Installation Size182 mm 52 mm 160 mm Panel Size188 mm 58 mm 6 mm Mass1.3 kg (excluding accessories) 1-6 (No.MA377) KD-G646/KD-G645 Design and specifications are subject to change wi

33、thout notice. AUDIO AMPLIFIER SECTION Maximum Power OutputFront/Rear50 W per channel Continuous Power Output (RMS)Front/Rear19 W per channel into 4 40 Hz to 20 000 Hz at no more than 0.8% total harmonic distortion. Load Impedance4 (4 to 8 allowance) Tone Control RangeBass12 dB at 60 Hz Mid-range12 d

34、B at 1 kHz Treble12 dB at 10 kHz Frequency Response40 Hz to 20 000 Hz Signal-to-Noise Ratio70 dB Line-Out Level/Impedance2.5 V/20 k load (full scale) Output Impedance1 k Subwoofer-Out Level/Impedance2.5 V/20 k load (full scale) Other TerminalAUX (auxiliary) input jack, USB input jack TUNER SECTION F

35、requency RangeFM87.5 MHz to 108.0 MHz AM531 kHz to 1 602 kHz FM TunerUsable Sensitivity11.3 dBf (1.0 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 Stereo Separation30 dB AM TunerSensitivity/Selectivity20 V/35 d

36、B 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 Dynamic Range96 dB Signal-to-Noise Ratio98 dB Wow and FlutterLess than measurable limit MP3 Decoding Format (M

37、PEG1/2 Audio Layer 3)Max. Bit Rate320 kbps WMA (Windows Media Audio) Decoding FormatMax. Bit Rate320 kbps USB SECTION USB StandardUSB 1.1, USB 2.0 Data Transfer Rate Full Speed)Max. 12 Mbps StorageLess than 8 GB (1 partition type) Compatible DeviceMass storage class (except HDD) Compatible File Syst

38、emFAT 32/16/12 Playable Audio FormatMP3/WMA Max. Current500 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 160 mm Panel Size188 mm 58 m

39、m 6 mm Mass1.3 kg (excluding accessories) (No.MA377)1-7 KD-G648 Design and specifications are subject to change without notice. AUDIO AMPLIFIER SECTION Maximum Power OutputFront/Rear50 W per channel Continuous Power Output (RMS)Front/Rear19 W per channel into 4 40 Hz to 20 000 Hz at no more than 0.8

40、% total harmonic distortion. Load Impedance4 (4 to 8 allowance) Tone Control RangeBass12 dB at 60 Hz Mid-range12 dB at 1 kHz Treble12 dB at 10 kHz Frequency Response40 Hz to 20 000 Hz Signal-to-Noise Ratio70 dB Line-Out Level/Impedance2.5 V/20 k load (full scale) Output Impedance1 k Subwoofer-Out Le

41、vel/Impedance2.5 V/20 k load (full scale) Other TerminalAUX (auxiliary) input jack, USB input jack TUNER SECTION Frequency RangeFM87.5 MHz to 108.0 MHz AM531 kHz to 1 602 kHz FM TunerUsable Sensitivity11.3 dBf (1.0 V/75 ) 50 dB Quieting Sensitivity16.3 dBf (1.8 V/75 ) Alternate Channel Selectivity (

42、400 kHz)65 dB Frequency Response40 Hz to 15 000 Hz Stereo Separation30 dB AM TunerSensitivity/Selectivity20 V/35 dB 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

43、 Hz Dynamic Range96 dB 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 Audio) Decoding FormatMax. Bit Rate320 kbps USB SECTION USB StandardUSB 1.1, USB 2.0 Data Transfer Rate Full Speed)Max. 12 M

44、bps StorageLess than 8 GB (1 partition type) Compatible DeviceMass storage class (except HDD) Compatible File SystemFAT 32/16/12 Playable Audio FormatMP3/WMA Max. Current500 mA GENERAL Power RequirementOperating VoltageDC 14.4 V (11 V to 16 V allowance) Grounding SystemNegative ground Allowable Oper

45、ating Temperature0C to +40C Dimensions (W H D) (approx.)Installation Size182 mm 52 mm 160 mm Panel Size188 mm 58 mm 6 mm Mass1.3 kg (excluding accessories) 1-8 (No.MA377) SECTION 1 PRECAUTION 1.1Safety Precautions ! Burrs formed during molding may be left over on some parts of the chassis. Therefore

46、, 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. (No.MA377)1-9 1.2Preventing static electricity Electrostatic discharge (ESD), which occurs when static elec

47、tricity 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 (la

48、ser 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 traverse unit (optical

49、pickup) on it. (2) Ground yourself Use an anti-static wrist strap to release any static electricity built up in your body. (3) Handling the optical pickup In order to maintain quality during transport and before installation, both sides of the laser diode on the replacement optical pickup are shorted. After replacement, return the shorted parts to their original condition. (Refer to the text.) Do not use a tester to check the condition of the laser diode in the optical pickup. The testers internal power source can