Jvc-KDA-305-J-Service-Manual(1) 电路图 维修手册.pdf

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1、SERVICE MANUAL COPYRIGHT 2009 Victor Company of Japan, Limited No.MA429 2009/8 CD RECEIVER MA42920098 SERVICE MANUAL KD-A305J, KD-R300J, KD-R404UI, KD-R405U, KD-R405UN, KD-R405UT, KD-R405UH, KD-R406U, KD-R406UN, KD-R406UT, KD-R406UH, KD-S26J COPYRIGHT 2009 Victor Company of Japan, Limited Lead free

2、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、. . . . . . . . . . . . . . . . . . . . 1-4 2SPECIFIC SERVICE INSTRUCTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7 3DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4、 . . . . . . . . . . . . . . . . . . . . 1-8 4ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-17 5TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5、 . . . . . . . . . . . . . . . . . . . . . . . . . 1-22 KD-A305/KD-R300/KD-S26 RadioFans.CN 收音机爱 好者资料库 1-2 (No.MA429) SPECIFICATION KD-A305/KD-R300/KD-S26 AUDIO AMPLIFIER SECTION Power Output20 W RMS 4 Channels at 4 and or = 1% THD+N Amplifier Power Standard Signal-to-Noise Ratio80 dBA (reference: 1

6、 W into 4 ) Load Impedance4 (4 to 8 allowance) Tone Control RangeBass12 dB (60 Hz 80 Hz 100 Hz 120 Hz) Q0.5 Q1.0 Q1.5 Q2.0 Middle12 dB (500 Hz 1.0 kHz 1.5 kHz 2.5 kHz) Q0.75 Q1.0 Q1.25 Q1.5 Treble12 dB (7.5 kHz 10.0 kHz 12.5 kHz 15.0 kHz) Q0.75 Q1.25 Frequency Response40 Hz to 20 000 Hz Line-Out Lev

7、el/ Impedance KD-A3055.0 V/20 k load (full scale) KD-R300/KD-S262.5 V/20 k load (full scale) Subwoofer-Out Level/ Impedance KD-A3055.0 V /20 k load (full scale) KD-R300/KD-S262.5 V/20 k load (full scale) Output Impedance1 k Other TerminalAUX (auxiliary) input jack CD changer jack Steering wheel remo

8、te input (only for KD-A305) Antenna input TUNER SECTION Frequency RangeFMwith channel interval set to 100 kHz or 200 kHz 87.5 MHz to 107.9 MHz with channel interval set to 50 kHz87.5 MHz to 108.0 MHz AM with channel interval set to 10 kHz530 kHz to 1 710 kHz with channel interval set to 9 kHz531 kHz

9、 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 Separation35 dB AM TunerSensitivity20 V Selectivity35 dB CD PLAYER SECTION TypeCompact disc player Sign

10、al 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 3) Max. Bit Rate320 kbps WMA

11、 (Windows Media Audio) Decoding Format Max. Bit Rate192 kbps 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

12、” 2-1/16” 6-5/16”) Panel Size188 mm 58 mm 6 mm (7-7/16” 2-5/16” 1/4”) Mass1.3 kg (2.9 lbs) (excluding accessories) RadioFans.CN 收音机爱 好者资料库 (No.MA429)1-3 KD-R406/KD-R405/KD-R404 Design and specifications are subject to change without notice. AUDIO AMPLIFIER SECTION Maximum Power OutputFront/Rear50 W

13、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 (60 Hz 80 Hz 100 Hz 120 Hz) Q0.5 Q1.0 Q1.5 Q2.0 Middle12 dB (500 Hz 1.0 kHz 1.5 kHz 2.5 kHz) Q

14、0.75 Q1.0 Q1.25 Q1.5 Treble12 dB (7.5 kHz 10.0 kHz 12.5 kHz 15.0 kHz) Q0.75 Q1.25 Frequency Response40 Hz to 20 000 Hz Signal-to-Noise Ratio70 dB Line-Out Level/Impedance2.5 V/20 k load (full scale) Subwoofer-Out Level/Impedance2.5 V/20 k load (full scale) Output Impedance1 k Other TerminalAUX (auxi

15、liary) input jack CD changer jack Antenna input TUNER SECTION Frequency RangeFM87.5 MHz to 108.0 MHz AM531 kHz to 1602 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 15000 Hz S

16、tereo 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-Noise Ratio98 dB Wow

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

18、lowable 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) RadioFans.CN 收音机爱 好者资料库 1-4 (No.MA429) SECTION 1 PRECAUTION 1.1Safety Precautions ! Burrs formed during molding may be left over o

19、n 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. (No.MA429)1-5 1.2Preventing static electricity Electrostatic discharg

20、e (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 a

21、rea 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 befo

22、re 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 transport and before installation, both sides of the laser diode on the

23、 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 easily destroy the laser diode. 1.3Handlin

24、g 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 p

25、rocedure 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 strong force. (4) It is not possible to adjust the semi-fixed resist

26、or 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 pickup unit. Apply solder to the short land before the card wire is disconnected from the connector on the pickup unit. (If the card wire is disconne

27、cted without applying solder, the pickup may be destroyed by static electricity.) In the assembly, be sure to remove solder from the short land after connecting the card wire. 1M (caption) Anti-static wrist strap Conductive material (conductive sheet) or iron plate Mechanism control board CN102 Pick

28、up Flexible wire Short land section 1-6 (No.MA429) 1.5Important for laser products 1.CLASS 1 LASER PRODUCT 2.CAUTION : (For U.S.A.) Visible and/or invisible class II laser radiation when open. Do not stare into beam. (Others) Visible and/or invisible class 1M laser radiation when open. Do not view d

29、irectly 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 product uses visible and/or invisible laser radiation and is equipped with safety switches which prevent emission

30、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, the laser is able to function. 6.CAUTION : Use of controls, adjustments or performance of procedures other than those

31、 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 of an adjustment or operation check. WARNING LABEL and PRINT (No.MA429)1-7 SECTION 2 SPECIFIC SERVICE INSTRUCTIONS

32、 2.1Identification method Supported reduction in cost, and board contents was changed. A set put the following label on is an object. Top view Change pwb parts Front side Label position 1-8 (No.MA429) SECTION 3 DISASSEMBLY 3.1Main body (Used figure are KD-A305) 3.1.1Removing the Bottom chassis (See

33、Fig.1, 2) (1) Remove the two screws A and one screw B attaching the Heat sink. (See Fig.1) (2) Remove the two screws C, two screws D and one screw E attaching the Bottom chassis and then slide to backward the Bottom chassis. (Se Fig.2) Fig.1 Fig.2 3.1.2Removing the Front chassis (See Fig.3) (1) Dise

34、ngage four hooks a engaged both side of the Front chassis. Fig.3 3.1.3Removing the Main board (See Fig.4, 5) (1) Remove the two screws F and one screw G attaching the side plate. (See Fig.4) (2) Remove the three screws H attaching the Main board. (See Fig.5) (3) Disconnect the connector CN501 of the

35、 main board from CD mechanism. (See Fig.5) Fig.4 Fig.5 AAB CCDD E hook a FFG HCN501 H (No.MA429)1-9 3.1.4Removing the CD mechanism (See Fig.6) (1) Remove the three screws J attaching the CD mechanism. Fig.6 3.1.5Removing the Switch board (See Fig.7) (1) Remove the Volume knob. (2) Remove the four sc

36、rews K attaching the Rear cover. (3) Disengage eleven hooks b engaged Rear cover. Fig.7 JJ J KKhook b hook b 1-10 (No.MA429) 3.1.6CD MECHANISM assembly section Remove the CD MECHANISM assembly from the main body. 3.1.7Removing the MECHANISM CONTROL BOARD assembly (See Fig.1 and 2) (1)From the bottom

37、 side of CD MECHANISM assembly, remove the solders from the soldered sections (a, b and c) on the MECHANISM CONTROL BOARD assembly. (See Fig.1.) (2) Remove the three screws A and one screw B attaching the MECHANISM CONTROL BOARD assembly. (See Fig.1.) (3) Solder the short land sections on the pickup

38、. (See Fig.2.) Caution: Solder the short land sections on the pickup before disconnecting the flexible wire from the connector CN102 on the MECHANISM CONTROL BOARD as- sembly. If the card wire is disconnected without attaching solder, the pickup may be destroyed by static electricity. (See Fig.2.) W

39、hen attaching the MECHANISM CONTROL BOARD assembly, remove the solders from the short land sections after connecting the flexible wire to the connector CN102 on the MECHANISM CONTROL BOARD assembly. Fig.1 Fig.2 A CN102 Mechanism control board A A B b a c Mechanism control board CN102 Pickup Flexible

40、 wire Short land section (No.MA429)1-11 3.1.8Removing the top cover (See Fig.3 to 5) Remove the MECHANISM CONTROL BOARD assembly. (1) From the front side of the CD MECHANISM assembly, change the hook position of the two roller springs. (See Fig.3.) (2) From the side of the CD MECHANISM assembly, rem

41、ove the six screws C attaching the top cover. (See Fig.3 and 4.) (3) Take out the top cover in an upward direction. (See Fig.5.) Fig.3 Fig.4 Fig.5 3.1.9Removing the roller (See Fig.6) Remove the MECHANISM CONTROL BOARD assembly and top cover. (1) From the bottom side of the top cover, remove the scr

42、ew D attaching the gear holder. (2) Remove the R.holder assembly from disc plate, and then take out the roller from R.holder assembly in the direction of the arrow. Reference: When attaching the R.ACT gear (2) and R.ACT gear (3), apply grease to the section d of R.holder assembly. Fig.6 C Top cover

43、Roller springRoller spring C C Top cover Top cover Roller coller Roller R.ACT gear(3) Roller gear Gear holder R.ACT gear(2) R.holder assembly Top cover Disc plate Washer D d 1-12 (No.MA429) 3.1.10 Removing the PHOTO BOARD assembly (See Fig.7 and 8) Remove the MECHANISM CONTROL BOARD assembly and top

44、 cover. (1)From the bottom side of the top cover, release the projection e from the notch of the disc plate. (See Fig.7.) (2) Take out the disc plate in the direction of the arrow. (See Fig.7.) (3) From the reverse side of the disc plate, remove the screw E attaching the PHOTO BOARD assembly. (See F

45、ig.8.) Fig.7 Fig.8 3.1.11 Removing the mechanism section (See Fig.9 and 10) Remove the MECHANISM CONTROL BOARD assembly and top cover. (1)From the top side of the CD MECHANISM assembly, remove the two screws F attaching the loading motor assembly. (See Fig.9.) (2) Remove the two roller springs on th

46、e top side of the mecha frame. (See Fig.9.) (3) Remove the four SUS springs on the top side of the mecha frame. (See Fig.9.) (4) Remove the link spring on the top side of the mecha frame. (See Fig.10.) (5) Release section f of the three dampers from the mecha frame. (See Fig.10.) Reference: When att

47、aching the roller spring and SUS spring, keep direction before remove. (6)Move the slide cam (R) assembly in the direction of the arrow, and then take out the mechanism section in an upward direction. (See Fig.10.) Reference: When attaching the mechanism section, apply grease to the section g. (See

48、Fig.10.) Fig.9 Fig.10 Top cover Disc plate e e Photo board Disc plate E F Mechanism section Mecha frame Roller spring Loading motor assembly SUS spring SUS spring SUS spring SUS spring Damper Mecha frame Mechanism section Link spring Slidecam(R) assembly f g (No.MA429)1-13 3.1.12 Removing the slide

49、cam (L) (See Fig.11 to 13) Remove the MECHANISM CONTROL BOARD assembly, top cover and mechanism section. (1) From the top side of the mecha frame, remove the screw G attaching the cam cover. (See Fig.11.) (2)Take out the cam cover from mecha frame in an upward direction. (See Fig.11.) (3) Take out the slide cam (L) in the direction of the arrow. (See Fig.12.) Reference: When attaching the slide cam (L), apply grease to the section h. (See Fig.13.) Fig.11 Fig.12 Fig.13 Mecha frame Cam cover G Mecha frame Slide cam(