Jvc-KDG-431-EX-Service-Manual(1) 电路图 维修手册.pdf

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1、SERVICE MANUAL COPYRIGHT 2006 Victor Company of Japan, Limited No.MA290 2006/12 CD RECEIVER MA290200612SERVICE MANUAL KD-G431E, KD-G431EX, KD-G431EY, KD-G431EU, KD-G433UI, KD-G434UI, KD-G435U, KD-G435UN, KD-G435UT, KD-G435UH, KD-G436U, KD-G436UN, KD-G436UT, KD-G436UH, KD-G437EE, KD-G387EE COPYRIGHT

2、2006 Victor Company of Japan, Limited Lead free solder used in the board (material : Sn-Ag-Cu, melting point : 219 Centigrade) TABLE OF CONTENTS 1PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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

4、 1-7 4ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10 5TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5、 . . . . . 1-11 (for europe) RadioFans.CN 收音机爱 好者资料库 1-2 (No.MA290) SPECIFICATION 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

6、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 7.5 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 Impedance

7、1 k Other TerminalsCD changer (for KD-G437) AUX (auxiliary) input jack TUNER SECTION Frequency Range:FM (for Asia)87.5 MHz to 108.0 MHz FM1 (for EY)87.5 MHz to 108.0 MHz FM1/FM2 (for EE)87.5 MHz to 108.0 MHz FM3 (for EE)65.00 MHz to 74.00 MHZ AM (for Asia)531 kHz to 1 602 kHz AM (for EE)MW: 522 kHz

8、to 1620 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 AM Tuner (for Asia)Sensitivity/Selectivity20 V/35 dB MW Tuner (fo

9、r EE)Sensitivity/Selectivity20 V/35 dB LW Tuner (for EE)Sensitivity50 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 Ratio

10、98 dB Wow and FlutterLess than measurable limit MP3 Decoding Format: (MPEG1/2 Audio Layer 3)Max. Bit Rate : 320 kbps WMA (Windows MediaAudio) Decoding FormatMax. Bit Rate : 192 kbps GENERAL Power RequirementOperating VoltageDC 14.4 V (11 V to 16 V allowance) Grounding SystemNegative ground Allowable

11、 Operating Temperature0C to +40C Dimensions (W H D): (approx.) Installation Size182 mm 52 mm 150 mm Panel Size187 mm 58 mm 13 mm Mass1.3 kg (excluding accessories) RadioFans.CN 收音机爱 好者资料库 (No.MA290)1-3 SECTION 1 PRECAUTIONS 1.1Safety Precautions ! Burrs formed during molding may be left over on some

12、 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. RadioFans.CN 收音机爱 好者资料库 1-4 (No.MA290) 1.2Preventing static electricity Ele

13、ctrostatic 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 to prevent damage by static electricity Static electr

14、icity 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 conductive material (such as a conductive sheet) or an iron pla

15、te 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 transport and before installation, both sides of the las

16、er 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 easily destroy the laser di

17、ode. 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 the optical pickup. For specific details, refer to th

18、e 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 strong force. (4) It is not possible to adjust the se

19、mi-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 disconnected from the connector on the CD pickup unit. (If

20、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 strap Conductive material (conductive sheet) or iron plat

21、e Wires Push switch Pickup Base board Pickup Connector Flexible wire Frame CD mechanism assembly (No.MA290)1-5 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

22、 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 product uses visible and/or invisible laser radiation

23、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, the laser is able to function. 6.CAUTION : Use of control

24、s, 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 of an adjustment or operation check. WARNING LABEL and

25、 PRINT 1-6 (No.MA290) SECTION 2 SPECIFIC SERVICE INSTRUCTIONS This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS. (No.MA290)1-7 SECTION 3 DISASSEMBLY 3.1Main body 3.1.1Removing the Bottom cover (See Fig.1) (1) Disengage the five hooks a engaged Bottom cover. Fig.1 3.1.2Removing the

26、Front chassis assembly (See Fig.2) (1) Remove the two screws A (both side of Front chassis as- sembly) attaching the Front chassis assembly. (2) Disengage the two hooks b (both side of the Front chassis assembly) engaged the Front chassis assembly. Fig.2 3.1.3Removing the Rear bracket (See Fig.3) (1

27、) Remove the one screw B attaching the remote cable. (only for Europe) (2) Remove the one screw C attaching the antenna jack. (3) Remove the one screw D attaching the LINE OUT jack. (4) Remove the one screw E attaching the CD-CH jack. (5) Remove the one screw F attaching the IC bracket. (6) Remove t

28、he two screws G attaching the 16pin connector. (7) Removing the three screws H attaching the Rear bracket. Fig.3 Hook aHook aHook a A Hook b BH H H GG CDEF 1-8 (No.MA290) 3.1.4Removing the Heat sink (See Fig.4) (1) Remove the two screws J and one screw K attaching the Heat sink. Fig.4 3.1.5Removing

29、the Main board assembly (See Fig.5) (1) Remove the two screws L attaching the Main board as- sembly. (2) Disconnect the connector CN501 connected the Main board assembly and CD board assembly. Fig.5 3.1.6Removing the CD mechanism assembly (See Fig.6) (1) Remove the three screws M attaching the CD me

30、chanism assembly. Fig.6 JJK L L CN501 M M M (No.MA290)1-9 3.2Front panel assembly 3.2.1Removing the Rear cover (See Fig.7) (1) Remove the volume knob from Front panel assembly. (2) Remove the five screws N attaching the Rear cover. (3) Disengage the fourteen hooks c engaged Rear cove. CAUTION: When

31、remove the Rear cover, Detach knob and spring are easy to come off to easy, do not lost them. Fig.7 3.2.2Remove the Switch board assembly (See Fig.8) (1) Disengage the Illumination lens from engaged part of Front cover. (2) Lift up the Switch board assembly, and then remove it. CAUTION: When remove

32、the Switch board assembly, each knob come off to easy, do not lost them. Fig.8 3.3CD mechanism assembly For CD mechanism, please refer mechanism manual TN2007-1010 (No.MY005 and No.MY005B). N N N Hook cHook c Hook c Hook c Hook c Illumination lens 1-10 (No.MA290) SECTION 4 ADJUSTMENT 4.1Test instrum

33、ents 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 1 4.2Standard measuring conditions Power supply voltage : DC14.4V(10.5 to 16V) Load impedance : 20

34、K(2 Speakers connection) Output Level : Line out 2.0V (Vol. MAX) 4.3Standard volume position Balance and Bass & Treble volume : Indication 0 Loudness : OFF 4.4Dummy load Exclusive dummy load should be used for AM, and FM. For FM dummy load, there is a loss of 6dB between SSG output and an- tenna inp

35、ut. The loss of 6dB need not be considered since direct reading of figures are applied in this working standard. 4.5How to connect the extension cable for adjustment CAUTION : Be sure to attach the heat sink and rear bracket onto the power amplifier and regulator respectively, before supply the powe

36、r. If voltage is applied without attaching those parts, the power amplifier IC and regulator IC will be destroyed by heat. Heat sink Rear bracket EXTSH002-22P Extension cable (No.MA290)1-11 SECTION 5 TROUBLESHOOTING 5.116PIN CORD DIAGRAM (for Europe) 8 7 6 5 4 3 2 1 16 15 14 13 12 11 10 9 BK RD NC B

37、L/WH WH/BK GN/BK VI/BK GY/BK WH GN VI GY YL NC NC BR 1 3 5 7 2 4 6 8 NC NC BL/WH RD BR YL NC BK 1 3 5 7 2 4 6 8 VI GY WH GN VI/BK GY/BK WH/BK GN/BK 7 RD 16 YL 8 BK 5 BL/WH 13 BR 3 GN 11 GN/BK 2 VI 10 VI/BK 4 WH 12 WH/BK 1 GY 9 GY/BK RD RD 7 YL 4 8 5 2 8 5 2 7 1 6 3 4 BK RD BL WH BR Black Red Blue Wh

38、ite Brown GNGreen VIViolet GYGray YLYellow RRRear Right FRFront Right FLFront Left RLRear Left REMOTERemote ACC TEL ACC Line Telephone Muting GNDGround MEMORYMemory Backup Battery+ ILLIlluminations Control ANTAuto Antenna 1-12 (No.MA290) 5.216 PIN CORD DIAGRAM (for Asia) 8 7 6 5 4 3 2 1 16 15 14 13

39、12 11 10 9 BK RD BL BL/WH WH GN VI GY YL NC NC WH/BK GN/BK VI/BK GY/BK GND 16 YL 8 BK 7 RD 3 GN 11 GN/BK 2 VI 10 VI/BK 4 WH 12 WH/BK 1 GY 9 GY/BK 5 BL/WH 6 BL Black RD BK Red BLBlue WHWhite GNGreen VIViolet GYGray YLYellow RR FR FL RL REMOTE ANT ACC GND MEMORY Rear Right Front Right Front Left Rear

40、Left Remote ACC Line Ground Memory Backup Battery+ Auto Antenna MEMORY GND ACC RL+ RL- RR+ RR- FL+ FL- FR+ FR- REMOTE ANT REMOTE OUTPUT ONLY POWER ANTENNA NC (No.MA290)1-13 (No.MA290) VPT Printed in Japan Victor company of Japn, Limited Mobile Entertainment Business Group Mobile Entertainment Catego

41、ry 10-1,1chome,Ohwatari-machi,Maebashi-city,Gumma-ken, 371-8543,Japan Contents Block diagram Standard schematic diagrams Printed circuit boards 2-1 2-2 2-5 CD-ROM No.SML200612 SCHEMATIC DIAGRAMS CD RECEIVER No.MA290SCH 2006/12 KD-G431E,KD-G431EX,KD-G431EY KD-G431EU,KD-G433UI,KD-G434UI KD-G435U,KD-G4

42、35UN,KD-G435UT KD-G435UH,KD-G436U,KD-G436UN KD-G436UT,KD-G436UH KD-G437EE,KD-G387EE COPYRIGHT 2006 Victor Company of Japan, Limited. Lead free solder used in the board (material : Sn-Ag-Cu, melting point : 219 Centigrade) (for europe) ! Burrs formed during molding may be left over on some parts of t

43、he chassis. Therefore, pay attention to such burrs in the case of preforming repair of this system. Safety precaution ! Please use enough caution not to see the beam directly or touch it in case of an adjustment or operation check. 2-1 Block diagram SPINDLE MOTOR POSITION SET SWITCH LOAD&FEED MOTOR

44、SW1, SW2 PICK UP PSW SW1, SW2 IC501 BTL DRIVER IC521 RF AMP IC581 CD L.P.F. IC981 1.5V REGULATOR IC523 LEVEL SHIFT VF1 VF2 VT1 VT2 MD LD FOP TRP TRVP MLD MDATA MCLK NRST NPWDOWN TU1 FM/AM TUNER IC701 CPU IC171 E.VOLUME Q341, Q351 LINE OUT MUTING Q301 Q781 to Q783 MUTE DRIVER IC301 POWER AMP. IC901 R

45、EGULATOR EACH BLOCK TU_L/R OUTFL/R OUTRL/R RLO RRO RLO, RRO STDBY EXT ACC, REMOTE ANT SW5V,ACC5V VDD5V.CD8V 3.3V,9V,ILL10V TEL_MUTETEL_MUTE CD_L/R POWER, CDON, ANT_CONT DMOUTILM.ADJ LF+/- RF+/- LR+/- RR+/- VSCL VSDA VMUTE MUTE SMUTE L_MUTE MPX-OUT ANT SW1 SW2 LM MSW FEED+/- SP+/- VF1, VF2, VT1, VT2,

46、 LD, MD SP+/- FEED+/- TRK+/- FOCUS+/- SPK BATTERY FSU AFS Q_OUT SSTOP TUSDA TUSCL KEY0 to 2 LCDCLK LCDDA LCDCE REMOCON ENC1 ENC2 OUTL/R STAT IRQ STAT IRQ LINE OUT REAR AUX INPUT FOCUS & TRACKING COIL TRK+/- FOCUS+/- CD mechanism control section System control & Main amplifier section S601 to S618 KE

47、Y MATRIX KEY0 KEY1 KEY2 IC661 LCD DRIVER LCD1 LCD DISPLAY COM1 to COM3 S1 to S52 LCDCLK LCDDA LCDCE IC681 REMOCON REMOCON AUX_L/RAUX_L/R JS686 ENCODER D630 POWER LED D631 to D647 D650 to D653 LIGHTING DISPLAY CJ601 CN701 ENC1 ENC2 ILL10V ACC5V CHANGER CONTROLIC801 JVC BUS Q891 TEL.MUTE D951 POWER AN

48、T SI, SO, I/O, SCK, INT SI/SO CH_L/R STEERING REMOTE STEERING IC775,S775 RESET IC771 EPROM RESET ERCLK ERDI X702 32.768kHz X701 8MHz Q901,Q902 IC71 RDS DETECTOR RDSDA RDSCL CN501 CN761J801CN901J321 J1 1.5VVDD5V MUTE PS2MEMORY IN Q911,Q912 J601 LCD/Key control & AUX Input section CN001 PSW Used for A

49、rea suffix E/EE/EU/EX/EY Used for Area suffix E/EE/EU/EX/EY Used for Area suffix U/UI/UN/UT/UH Used for KD-G431 Not Used for KD-G387 X71 4.332MHz 2-2 Parts are safety assurance parts. When replacing those parts make sure to use the specified one. R726 R743 D321 C714 R181 C5 C701 C702 J1 D971 C82 CN761 C322 TP2 D951 C994 X702 D902 R732 CN901 R906 R746 R745 R760 R765 R905 C901 D301 C351 L701 R892 R742 C341 R737 Q351 TP5 C302 C304 C303 C193 R303 R728 D901 TP6 C192 C175C174 TU1 C993 C8 C310 D994 R748 R702