Jvc-KWXG-500-Service-Manual(1) 电路图 维修手册.pdf

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1、SERVICE MANUAL COPYRIGHT 2007 Victor Company of Japan, Limited No.MA345 2007/6 CD RECEIVER MA34520076 SERVICE MANUAL KW-XG500J, KW-XG504UI, KW-XG505U, KW-XG505UN, KW-XG505UH, KW-XG506U, KW-XG506UN, KW-XG506UH, KW-XG508UF COPYRIGHT 2007 Victor Company of Japan, Limited * Please refer to the mechanism

2、 manual (model TN2007-1010 (No.MY005 and No.MY005B) for the CD mechanism. 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 1PRECAUTIONS . . . . . . . . . .

3、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6 2SPECIFIC SERVICE INSTRUCTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9 3DISASSEMBLY . . . . . . . . . .

4、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10 4ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-14 5TROUBLESHOOTIN

5、G . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-15 (for KW-XG500) RadioFans.CN 收音机爱 好者资料库 1-2 (No.MA345) SPECIFICATION KW-XG500 Design and specifications are subject to change without notice. AUDIO AMPLIFIER SECTIO

6、N Power Output20 W RMS 4 Channels at 4 and or = 1% THD+N Signal to Noise Ratio80 dBA (reference: 1 W into 4 ) 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 Line-Out Level/Impedance2.5 V/20 k

7、load (full scale) Output Impedance1 k Subwoofer-Out Level/Impedance2.5 V/20 k load (full scale) Other TerminalCD changer, Steering wheel remote input, Subwoofer input, AUX (auxilliary) in- put jack TUNER SECTION Frequency RangeFM87.5 MHz to 107.9 MHz (with channel interval set to 100 kHz or 200 kHz)

8、 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 1 602 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 Selectiv

9、ity (400 kHz) 65 dB Frequency Response40 Hz to 15 000 Hz Stereo Separation35 dB AM TunerSensitivity20 V Selectivity35 dB CD PLAYER SECTION TypeCompact disc player Signal Detection SystemNon-contact optical pickup (semiconductor laser) Number of Channels2 channels (stereo) Frequency Response5 Hz to 2

10、0 000 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 Rate: 320 kbps WMA (Windows Media Audio) Decoding FormatMax. Bit Rate: 192 kbps GENERAL Power RequirementOperating VoltageDC 14.4 V (11 V to 16 V allo

11、wance) Grounding SystemNegative ground Allowable Operating Temperature0C to +40C (32F to 104F) Dimensions (W H D) (approx.) Installation Size178 mm 100 mm 158 mm (7-1/16 3-15/16 6-1/4) Set Size178 mm 100 mm 178 mm (7-1/16 3-15/16 7-1/16) Mass1.8 kg (4.0 lbs) (excluding accessories) RadioFans.CN 收音机爱

12、 好者资料库 (No.MA345)1-3 KW-XG504 Design and specifications are subject to change without notice. AUDIO AMPLIFIER SECTION Maximum Power OutputFront and rear50 W per channel Continuous Power Output (RMS) Front and rear19 W per channel into 4 , 40 Hz to 20 000 Hz at no more than 0.8% total har- monic dist

13、ortion. 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 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

14、TerminalCD changer, Subwoofer input, AUX (auxilliary) 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 (400 kHz) 65 dB Frequency Response4

15、0 Hz to 15 000 Hz Stereo Separation30 dB AM TunerSensitivity20 V Selectivity35 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 Hz Dynamic Range96 dB Signal-to-N

16、oise Ratio98 dB Wow and FlutterLess than measurable limit MP3 Decoding Format: (MPEG1/2 Audio Layer 3)Max. Bit Rate: 320 kbps WMA (Windows Media Audio) Decoding FormatMax. Bit Rate: 192 kbps GENERAL Power RequirementOperating VoltageDC 14.4 V (11 V to 16 V allowance) Grounding SystemNegative ground

17、Allowable Operating Temperature0C to +40C Dimensions (W H D) (approx.) Installation Size178 mm 100 mm 158 mm Set Size178 mm 100 mm 178 mm Mass1.8 kg (excluding accessories) RadioFans.CN 收音机爱 好者资料库 1-4 (No.MA345) KW-XG506/KW-XG505 Design and specifications are subject to change without notice. AUDIO

18、AMPLIFIER SECTION Maximum Power OutputFront and rear50 W per channel Continuous Power Output (RMS) Front and rear19 W per channel into 4 , 40 Hz to 20 000 Hz at no more than 0.8% total har- monic distortion. Load Impedance4 (4 to 8 allowance) Tone Control RangeBass12 dB at 60 Hz Mid-range12 dB at 1

19、kHz Treble12 dB at 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 TerminalCD changer, Subwoofer input, AUX (auxilliary) input jack TUNER SECTION Frequency RangeFM87.5

20、 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 TunerSensitivity20 V Selectivity35 dB CD PLAYER SECTION

21、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 Layer

22、3)Max. Bit Rate: 320 kbps WMA (Windows Media Audio) Decoding FormatMax. Bit Rate: 192 kbps 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 Size178 mm 100 m

23、m 158 mm Set Size178 mm 100 mm 178 mm Mass1.8 kg (excluding accessories) (No.MA345)1-5 KW-XG508 Design and specifications are subject to change without notice. AUDIO AMPLIFIER SECTION Maximum Power OutputFront and rear50 W per channel Continuous Power Output (RMS) Front and rear19 W per channel into

24、 4 , 40 Hz to 20 000 Hz at no more than 0.8% total har- monic 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 (ful

25、l scale) Output Impedance1 k Subwoofer-Out Level/Impedance2.5 V/20 k load (full scale) Other TerminalCD changer, Subwoofer input, AUX (auxilliary) 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 Sens

26、itivity16.3 dBf (1.8 V/75 ) Alternate Channel Selectivity (400 kHz) 65 dB Frequency Response40 Hz to 15 000 Hz Stereo Separation30 dB AM TunerSensitivity20 V Selectivity35 dB CD PLAYER SECTION TypeCompact disc player Signal Detection SystemNon-contact optical pickup (semiconductor laser) Number of C

27、hannels2 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 Rate: 320 kbps WMA (Windows Media Audio) Decoding FormatMax. Bit Rate: 192 kbps GENERAL Power Re

28、quirementOperating VoltageDC 14.4 V (11 V to 16 V allowance) Grounding SystemNegative ground Allowable Operating Temperature0C to +40C Dimensions (W H D) (approx.) Installation Size178 mm 100 mm 158 mm Set Size178 mm 100 mm 178 mm Mass1.8 kg (excluding accessories) 1-6 (No.MA345) SECTION 1 PRECAUTIO

29、NS 1.1Safety 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 che

30、ck. (No.MA345)1-7 1.2Preventing 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

31、 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. Be careful to use proper grounding in the area where repairs are being performed. (1) Ground the workbench Ground the workbench by laying conductiv

32、e material (such as a conductive sheet) or an iron plate over it before placing the traverse unit (optical 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 tr

33、ansport 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

34、 internal power source can easily destroy the laser diode. 1.3Handling 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

35、 the optical pickup. For specific details, refer to the replacement procedure in the text. Remove the anti-static pin when replacing the traverse unit. Be careful not to take too long a time when attaching it to the connector. (3) Handle the flexible cable carefully as it may break when subjected to

36、 strong force. (4) It is not possible to adjust the semi-fixed resistor that adjusts the laser power. Do not turn it. 1.4Attention when traverse unit is decomposed *Please refer to Disassembly method in the text for the CD pickup unit. Apply solder to the short land before the flexible wire is disco

37、nnected from the connector on the CD pickup unit. (If the flexible wire is disconnected without applying solder, the CD pickup may be destroyed by static electricity.) In the assembly, be sure to remove solder from the short land after connecting the flexible wire. 1M (caption) Anti-static wrist str

38、ap Conductive material (conductive sheet) or iron plate Wires Push switch Pickup Base board Pickup Connector Flexible wire Frame CD mechanism assembly 1-8 (No.MA345) 1.5Important for laser products 1.CLASS 1 LASER PRODUCT 2.CAUTION : (For U.S.A.) Visible and/or invisible class II laser radiation whe

39、n open. Do not stare into beam. (Others) Visible and/or invisible class 1M laser radiation when open. Do not view directly with optical instruments. 3.CAUTION : Visible and/or invisible laser radiation when open and inter lock failed or defeated. Avoid direct exposure to beam. 4.CAUTION : This laser

40、 product uses visible and/or invisible laser radiation and is equipped with safety switches which prevent emission of radiation when the drawer is open and the safety interlocks have failed or are defeated. It is dangerous to defeat the safety switches. 5.CAUTION : If safety switches malfunction, th

41、e laser is able to 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 and PRINT ! Please use enough caution not to see the beam directly or touch it in case

42、 of an adjustment or operation check. WARNING LABEL and PRINT (No.MA345)1-9 SECTION 2 SPECIFIC SERVICE INSTRUCTIONS This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS. 1-10 (No.MA345) SECTION 3 DISASSEMBLY 3.1MAIN BODY 3.1.1Removing the FRONT PANEL assembly (See Fig.1) (1) From the

43、bottom side of main body, remove the two screws A attaching the both side of the FRONT PANEL assembly. (2) Disengage two hooks a engaged CHASSIS assembly. Fig.1 Ahook ahook a (No.MA345)1-11 3.1.2Removing the HEAT SINK (See Fig.2) (1) Remove the five screws B and one screw C attaching the HEAT SINK.

44、Fig.2 3.1.3Removing the REAR BRACKET (See Fig.3) (1) Remove the seven screws D, two screws E and one screw F attaching the REAR BRACKET. Fig.3 3.1.4Removing the BOTTOM CHASSIS assembly (See Fig.4) (1) Remove the four screws G attaching the BOTTOM CHAS- SIS assembly. Fig.4 BBC DD D F E GG 1-12 (No.MA

45、345) 3.1.5Removing the FUNC BOARD assembly (See Fig.5) (1) Remove the one screw H attaching the FUNC BOARD as- sembly. (2) Disconnect the connecter wire from MAIN BOARD assem- bly connected to connector CN322 of the FUNC BOARD assembly. (3) Straighten hook b attaching the FUNC BOARD assembly. 3.1.6R

46、emoving the MIDDLE CHASSIS (See Fig.5) (1) Remove the four screws J attaching the MIDDLE CHAS- SIS. (2) Disconnect the connector CN501 of the main board on the MIDDLE CHASSIS from the CD mechanism assembly in an upward direction. Fig.5 3.1.7Removing the MAIN BOARD assembly (See Fig.6) (1) Remove the

47、 four screws K attaching the MAIN BOARD as- sembly. Fig.6 JJ H CN322 hook b CN501 K K (No.MA345)1-13 3.1.8Removing the CD MECHANISM assembly (See Fig.7) (1) Remove the three screws L attaching the CD MECHA- NISM assembly. Fig.7 3.1.9Removing the SWITCH BOARD assembly (See Fig.8) (1) Remove the volum

48、e knob from the front side of the FRONT PANEL assembly. (2) Remove the thirteen screws M and two screws N attaching the SWITCH BOARD assembly. Fig.8 3.2CD MECHANISM assembly For CD MECHANISM ASSEMBLY, please refer MODEL TN2007-1010 (No.MY005 and No.MY005B). L L MM N M 1-14 (No.MA345) SECTION 4 ADJUS

49、TMENT 4.1Adjustment method 4.1.1Test instruments required for adjustment (1) Digital oscilloscope (100MHz) (2) Electric voltmeter (3) Digital tester (4) Tracking offset meter (5) Test Disc JVC :CTS-1000 (6) Extension cable for check EXTSH002-22P x 1 4.1.2Standard measuring conditions Power supply voltage : DC14.4V(11 to 16V) Load impedance : 20K.(2 Speakers connection) Output Level : Line out 2.5V (Vol. MAX) 4.1.3Standard volume position Balance and Bass &Treble volume : lndication0 Loudness : OFF 4.1.