Jvc-KDR-525-Service-Manual(1) 电路图 维修手册.pdf

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1、SERVICE MANUAL COPYRIGHT 2011 Victor Company of Japan, Limited No.MA479 2011/2 CD RECEIVER MA47920112 SERVICE MANUAL KD-A525J, KD-BTP50J, KD-BTP52U, KD-R520J, KD-R521E, KD-R521EU, KD-R521EY, KD-R524UI, KD-R525U, KD-R525UH, KD-R525UN, KD-R526U, KD-R526UH, KD-R526UN, KD-R526UT, KD-R528J COPYRIGHT 2011

2、 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、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5 2SPECIFIC SERVICE INSTRUCTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8 3DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8 4ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12 5TROUBLESHOOTING . . . . . . . . . . . . . . . . . .

5、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-16 For KD-R521 For KD-R526/KD-BTP52 KD-R525 For KD-R528/KD-A525/KD-BTP50 KD-R520 For KD-R521/KD-R526/KD-BTP52 KD-R525 RadioFans.CN 收音机爱 好者资料库 1-2 (No.MA479) SPECIFICATION Subject to change without notice

6、. If a kit is necessary for your car, consult your telephone directory for the nearest car 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-A525, KD-BTP50, KD-R520, KD-R528 AUDIO

7、 AMPLIFIER SECTION Power Output20 W RMS 4 Channels at 4 and 1% THD+N Signal-to-Noise Ratio80 dBA (reference: 1 W into 4 ) 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 Impedance1 K Other TerminalUS

8、B input terminal, Front auxiliary input jack, Rear auxiliary/Bluetooth adapter input jack, Antenna terminal TUNER 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 t

9、o 1 700 kHz with channel interval set to 9 kHz 531 kHz to 1 611 kHz FM TunerUsable Sensitivity9.3 dBf (0.8 V/75 ) 50 dB Quieting Sensitivity 16.3 dBf (1.8 V/75) Alternate Channel Selectivity(400 kHz) 65 dB Frequency Response40 Hz to 15 000 Hz Stereo Separation 40 dB AM TunerSensitivity/Selectivity 2

10、0 V/40 dB CD PLAYER SECTION TypeCompact disc player Signal Detection SystemNon-contact optical pickup (semiconductor laser) Number of Channels 2 channels (stereo) Frequency Response 5 Hz to 20 000 Hz Signal-to-Noise Ratio98 dB Wow and Flutter Less than measurable limit MP3 Decoding Format (MPEG1/2 A

11、udio Layer 3) Max. Bit Rate: 320 kbps WMA (Windows Media Audio) Decoding FormatMax. Bit Rate: 192 kbps USB SECTION USB StandardUSB 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. Current

12、DC 5 V 500 mA General Power RequirementOperating Voltage DC 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 Size 182 mm 52 mm 159 mm (7-3/16 2-1/16 6-5/16) Panel Size188 mm 59 mm 9 mm (7

13、-7/16 2-3/8 3/8) Mass1.2 kg (2.7 lbs) (excluding accessories) RadioFans.CN 收音机爱 好者资料库 (No.MA479)1-3 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-R521:Made for iPod

14、, and Made for iPhone mean that an electronic accessory has been designed to connect specifically to iPod, or iPhone, respectively, and has been certified by the developer to meet Apple performance standards. Apple is not respon- sible for the operation of this device or its compliance with safety a

15、nd regulatory standards. Please note that the use of this accessory with iPod, or iPhone may affect wireless performance. iPhone, iPod, iPod classic, iPod nano, and iPod touch are trademarks of Apple Inc., registered in the U.S. and other countries. KD-R521 AUDIO AMPLIFIER SECTION Maximum Power Outp

16、utFront/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 dis- tortion. Load Impedance4 (4 to 8 allowance) Frequency Response40 Hz to 20 000 Hz Signal-to-Noise Ratio70 dB Line-Out or Subwoofer-Out Level/Impedance

17、2.5 V/20 k load (full scale) Output Impedance 600 Other TerminalUSB input terminal, Front auxiliary input jack, Rear auxiliary/Bluetooth adapter input jack, Aerial input TUNER SECTION Frequency RangeFM87.5 MHz to 108.0 MHz AMMW531 kHz to 1 611 kHz LW153 kHz to 279 kHz FM Tuner Usable Sensitivity9.3

18、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 Stereo Separation40 dB MW Tuner Sensitivity/Selectivity20 V/40 dB LW Tuner Sensitivity50 Mv CD PLAYER SECTION TypeCompact disc player Signal Detection Syst

19、emNon-contact optical pickup (semiconductor 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 Rate: 320 kbps WMA (Windows Media Audio) Decoding Form

20、atMax. Bit Rate: 192 kbps USB SECTION USB StandardUSB 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

21、 V allowance) Grounding SystemNegative ground Allowable Operating 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) RadioFans.CN 收音机爱 好者资料库 1-4 (No.MA479) Subject to change without notice. Microsoft a

22、nd Windows Media are either registered trademarks or trademarks of Microsoft Corporation in the United States and/or other countries. KD-R524:Made for iPod, and Made for iPhone mean that an electronic accessory has been designed to connect specifically to iPod, or iPhone, respectively, and has been

23、certified by the developer to meet Apple performance standards. Apple is not respon- sible for the operation of this device or its compliance with safety and regulatory standards. Please note that the use of this accessory with iPod, or iPhone may affect wireless performance. iPhone, iPod, iPod clas

24、sic, iPod nano, and iPod touch are trademarks of Apple Inc., registered in the U.S. and other countries. KD-BTP52, KD-R524, KD-R525, KD-R526 AUDIO AMPLIFIER SECTION Maximum Power Output50 W per channel Continuous Power Output (RMS)20 W per channel into 4 ,40 Hz to 20 000 Hz at no more than 1% total

25、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 Impedance1 k Other TerminalUSB input terminal, Front auxiliary input jack, Rear auxiliary/Bluetooth ada

26、pter input jack, Antenna ter- minal TUNER SECTION Frequency RangeFM87.5 MHz to 108.0 MHz AM 531 kHz to 1 611 kHz FM Tuner Usable Sensitivity9.3 dBf (0.8 V/75 ) 50 dB Quieting Sensitivity 16.3 dBf (1.8 V/75) Alternate Channel Selectivity(400 kHz)65 dB Frequency Response 40 Hz to 15 000 Hz Stereo Sepa

27、ration 40 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 (stereo) Frequency Response5 Hz to 20 000 Hz Signal-to-Noise Ratio98 dB Wow and FlutterLess than measu

28、rable limit MP3 Decoding Format (MPEG1/2 Audio Layer 3)Max. Bit Rate: 320 kbps WMA (Windows Media Audio) Decoding FormatMax. Bit Rate: 192 kbps USB SECTION USB StandardUSB 1.1, USB 2.0 Data Transfer Rate (Full Speed)Max. 12 Mbps Compatible DeviceMass Storage Class Compatible File SystemFAT 32/16/12

29、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 159 mm Panel Size188 mm 59 mm 9 mm M

30、ass1.2 kg (excluding accessories) (No.MA479)1-5 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 made to the original design unless aut

31、horized 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 alterations of the product should n

32、ot 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 special safety-related characteris

33、tics. 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 characteristics are identified in t

34、he 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 as the recommended replacement parts

35、 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 sharp edges for the prevention of e

36、lectric 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, always perform an isola- tion che

37、ck 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 this check. Plug the AC line cord di

38、rectly 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 not exceed 0.5mA AC (r.m.s.). Alter

39、nate 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 known good earth ground. Measure the

40、 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 outlet and repeat each measurement.

41、 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 that these safety standards are main

42、tained. (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 formed during molding may be left over o

43、n 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 that are printed over with black su

44、ch 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) Good earth ground Place this probe

45、 on each exposed metal part. AC VOLTMETER (Having 1000 ohms/volts, or more sensitivity) 1500 10W 0.15 F AC TYPE 1-6 (No.MA479) 1.5Preventing static electricity Electrostatic discharge (ESD), which occurs when static electricity stored in the body, fabric, etc. is discharged, can destroy the laser di

46、ode 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

47、 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 pickup) on it. (2) Ground yourself Use an anti-static wrist strap to release any

48、 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. (Ref

49、er 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 easily destroy the laser diode. 1.6Handling 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. Remove the anti-static pin