Kenwood-KDCX-790-Service-Manual电路原理图.pdf

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1、 2005-12 PRINTED IN JAPANB53-0361-00 (N)825CD RECEIVERKDC-W8534/W8534YKDC-X790SERVICE MANUALThis product uses Lead Free solder.Panel assy(A64-3730-02)MODEL TDF PANEL No. TDF NAMEKDC-W8534/W8534Y Y33-2430-63 TDF-W8534KDC-X790 Y33-2430-60 TDF-67DXTDF PANEL INFORMATIONA unique identification number (Un

2、ique ID) is given to each unit, which is imprinted on the CD mechanism assembly. If and when the mechanism assembly or Flash ROM (IC17) on the mechanism board is replaced, it is necessary to write the Unique ID. For details, refer to “How to Write the Unique ID“ on Page 24.CD MECHANISM EXTENSIONCORD

3、 (24P) : W05-0934-00DC cord (K type)(E30-6408-05)DC cord (E type)(E30-6412-05)Escutcheon(B07-3125-01)Mounting hardware assy(J21-9716-03)Remote controller assy(A70-2067-15)Lever(D10-4589-04) x2Antenna adaptor (E type)(T90-0523-05)Carrying case(W01-1661-05): E type(W01-1664-05): K typeCompact disc(W01

4、-1647-15): E type(W01-1643-25): K typeScrew set (K type)(N99-1758-05)Tapping screw(N09-6280-05)Panel assy(A64-3734-02)RC-527KDC-X790(K type)KDC-W8534KDC-W8534Y(E type)SIZE AA BATTERY(Not supplied)KDC-W8534/W8534YKDC-X7902BLOCK DIAGRAMAM+BF/EA1CDLX BUSSW5VA8VA8VAGCE-VOLLPF DAC LPFA3.3V A5VD3.3V D5VBU

5、5VA8VA3.3V REF+BSVR REFPREMUTE AMPOPICPOWER9VPRE OUTPRE OUTPRE OUTAUX INSHIFTLEVELD3.3VIC303 IC305IC1IC5 IC3IC4IC800 Q802Q608-613IC800IC750Q402IC300IC601-603IC103DRIVERMUTEBU5VIC102RDSDECODERIC400IC100MD-DETMEMOINSTALLERROM CORRSW5VBU5VA8VD5VSERVOQ450DSIBU5VUPBACKRESETIC BU5Vu-COMOPEL DISPP-CONANT-C

6、ONEXT AMPACC DETDIMMERSURGE DETB.U DETQ20BU5VSW16VQ50Q41ILL+BSW14VIC10A8VQ12IC600DC/DC(5VPRE)+BMOTORQ30PANEL5V(FL)SERVOQ63FL DCQ31DC/DCIC80DRIVERMOTORIC450CD5VQ64SW5VQ22MECHAPANELCLOSEOPEN/DETP CONANT CONEXT.AMP.CONDIMMERACCBACK UPLINEPANELSP OUT(FR)SP OUT(RL)SP OUT(FL)SP OUT(RR)REMOTED3.3VIC11SW5VQ

7、7,8D2.5VIC10FL+BFL3.3VFLQ6SW3.3VPANELu-COMIC4RESET SWIC1FLASH ROMENCODERROTARYIC2IC6KEY ILLBU5VSW5VSERVOD5VA8V9VILL+BQ40ED1ILL+B(SW)(FRONT)(REAR)WIREDQ205Q203,204Q202Q207Q206Q208IC200KEYQ10TEL MUTECOMPDRIVE3.3VADCDSPIC5RESETICKEY MATRIXLEVELSHIFTSHIFTLEVELSPE ANAIC3CORRROMREMO.CON.(FST)MDE2PROMFSTFM

8、/AMAUXCHCDorMDSPEMUTE A,CMUTE 0,1,2WININ OFFSETRSTMUTE A,CSTBYforMPXRDSRSTANASPEANADCERRPRE MUTEMUTE 0,1,2PANELTR COILFO COILCFABEPDLDSERVO DSPMOTORDRIVERSP MOTORLOADING &MOTORSLEDIC4IC2u-COMIC1MP3/WMA/AACIC15IC53.3V REG.3.3V REG.IC211.8V REG.IC20 IC193.3V REG.IC145V REG.SWDAC3.3 5V3.3 5V3.3 5V3.3 5

9、VLPFIC18IC1316MBITSDRAMIC16ROMFLASHIC174MBITD5VS7.5VA8VBU5VRF AMPDECODERACD DECODER16.898MHzSW3.3V(712)S7.5VRESETSCKSISTBA0SOINTQPOWER ON26.88MHzBU3.3VD5VFLAGC16MBCLKDATALRCKSW3.3VSW3.3VSW1.8V(CS7410)(CS7410)(712)POWER ONBU3.3VSW5VBU5VA8VRESETDATA MUTESREQ BREQDOCSCLKDI PCM DATAPCM BCLKPCM XCKPCM LR

10、CKDAC RSTDAC MUTEINFINITY 0 DET.L/RSER/GPIOL/RAUDIO MUTEI2CMSTOP,MRESETLOE/LIM SW8EJE-SWLOS-SW12EJE-SWL/RSW3.3V(712)CONTROLLERMEMORY8BIT0-2MBROMDRAM256k-8MB4,8,16BIT(CS7410)SW3.3V2x512kx16BIT512kx8BITSW3.3V(CS7410)SW5VEMPHI2SCD I/FDAC CONTROLSW3.3V(CS7410)SW1.8V&CD PLAYER UNIT (X32-5730-0x)3KDC-W853

11、4/W8534YKDC-X790COMPONENTS DESCRIPTION ELECTRIC UNIT (X34-3730-12/4242-7x)Ref. No. Application / Function Operation / Condition / CompatibilityIC1 DSP Analog Power Supply Output 3.3V.IC3 DAC Digital Power Supply Output 5.0V.IC4 DAC Analog Power Supply Output 5.0V.IC5 DSP Digital Power Supply Output

12、3.3V.IC10 Audio 8V Ref Power Supply Output 1.27V.Power Supply for VFD & Mecha digital.IC60 Switching Regulator Controller CH1 : VFD (4.7V)CH2 : Mecha digital (DXM-680x : 4V , Other : 5V)IC80 Switching Regulator Power supply for VFD. (57V)IC100 Reset IC “L” when detection voltage goes below 3.6V or l

13、ess.IC102 System -comControls FM/AM tuner, the changer, CD/MD mechanism,Panel, volume and tone.IC103 Muting logic IC Controls logic for muting.IC104 EEPROM For instrallers memoryIC200 Power Control IC Power control switchIC300 Eelectrical Volume & Source Selecter Controls the source, volume, and ton

14、e.IC301,302 Audio buffer AMP Low pass filter for DSP input.IC303 DSP Digital signal processer.IC304 Buffer IC It changes into 3.3V from 5.0V.IC305 DAC Digital to Analog converter.IC306308 Audio buffer AMP Low pass filter for DAC output.IC400 RDS decoderPanel mecha controlIC450 Panel mecha motor driv

15、erIC451 G-Analyzer Analog gravity sensor.IC600 9V AVR Power supply for 5V Pre Out OP-AMP.IC601603 5V Pre-out AMP Output buffer and gain control.IC750 Power IC Amplifies the front L/R and the rear L/R to 50W maximum.IC800Audio3.3V Ref Supply Audio 3.3V Ref supply to electrical volume and all low pass

16、 filters.SVR6.8V Ref Supply SVR6.8V Ref supply to power IC.Q10,11 Audio8V AVR When Q11 2in goes Hi, A8V AVR outputs 8.0V.Q12 SW14V When Q12 2pin goes Hi, SW14V outputs 14V.Q20,21 B.U.5V AVR While BU is applied, BU5V AVR outputs +5V.Q22,23 SW5V When Q23 base goes Hi, SW5V outputs +5V.Q30,32 Moter+B A

17、VR (Panel Mecha) When Q9 base goes Hi, Moter+B AVR outputs 7.5V.Q31,33 Servo+B AVR When Q33 base goes Hi, Servo+B AVR outputs 8.5V.Q40,42,45 Panel5V AVR When Q42 2pin goes Hi, anel5V AVR outputs 5V.IN1 IN2 Panel mechaLLWAITLHOPENHLCLOSEHHSTOPKDC-W8534/W8534YKDC-X7904COMPONENTS DESCRIPTIONRef. No. Ap

18、plication / Function Operation / Condition / CompatibilityQ41,43,44 Illumination AVR When Q43 2pin goes Hi, Ill AVR outputs 10.5V.Q5052 SW16V (Surge Protection) When Q51 2pin goes Hi, SW16V outputs 13V.Q60 VFD (4.7V) AVR SW When base goes Hi, VFD AVR off.Q61 Switching Regulator frequency control SW

19、(IC60)Q62 Mecha digital AVR SWWhen base goes Hi, Mecha digital AVR off.DXM-680x : 4V, Other : 5VQ63 VFD (4.7V) AVR Switching Power DriverThis FET is governed by IC60.Frequency is decided at Q61.Q64 Mecha digital AVR Power DriverThis FET is governed by IC60.Frequency is fixed 400kHz.Q80,81 VFD (57V)

20、AVR SW When Q81 base goes Hi, VFD (57V) AVR outputs 57V.Q91 Panel5V Discharge SW When Q91 base goes Hi, Panel5V is discharged.Q100,101 Panel Detect SW When Q100 base goes Lo, panel is detected.Q200,201 Pre-out mute driver When a base gose Lo, mute driver is turned on.Q202 Acc Detect SW When Q202 bas

21、e gose Hi, Acc voltage is detected.Q204 Surge Detect SW When Q204 base goes Hi, IC750 is changed into a standby state.Q205 B.U Detected SW When Q35 base gose Hi, B.U voltage is detected.Q206 Ext Amp Control Buffer It is buffer for IC102 output.Q207 Small-lamp Detect SW When Q207 base goes Hi, Small-

22、lamp is detected.Q208,209 Power Antenna SW When Q206 base goes Hi, power antenna switch outputs 14V.Q300 DSP mute SW When base goes Lo, DSP is set to mute.Q402,403 AM+B SW When Q403 base gose Hi, AM+B is outputs.DSI lights when the base is “L”.Q450 DSI Driver DSI turns off when the base is “H”.DSI t

23、urns on and off when panel is taken off.Q600602 Pre-Amp +9V AVRQ600 and 602 works as a differential amplifier,Q601 works as a driver and +9.4V is supplied to OP Amp for Pre-out.Q603605 Pre-Amp -9V AVRQ603 and 605 works as a differential amplifier,Q604 works as a driver and -9.1V is supplied to OP Am

24、p for Pre-out.Q606,607 AUDIO 10.5V AVR When Q606 base goes Hi, AVR outputs 10.5V.Q608613 Pre-out mute SW When a base gose Hi, Pre-out is set to mute.Q800,802 REF+B AVR When Q800 base goes Hi, AVR outputs 13V.Q801 SVR6.8V Ref Supply AGC ControllerWhen the voltage of B.U voltage falls, a return is hun

25、g and an outputis reduced.1pin2pinLHL 400kHz 600kHzH 650kHz 850kHz5KDC-W8534/W8534YKDC-X790COMPONENTS DESCRIPTION SWITCH UNIT (X16-354x-xx)Ref. No. Application / Function Operation / Condition / CompatibilityIC1ROM ICGraphics data includedFLASH ROM ICIC4 PANEL -COMIC5 RESET IC When panel is attached

26、, IC5 activeIC6 REMOTE CONTROL IC Remote control receiverIC7 BUFFER IC It is change into 3.3V from 5VIC8 BUFFER IC It is change into 5V from 3.3VIC9 BUFFER IC For Control ED1IC10 2.5V REGULATOR The power supply For 2.5VIC11 3.3V REGULATOR The power supply For 3.3VQ1TRIANGLE GREENTriangle green LED i

27、s lighting when Q1s base level goes “H”LED SWQ2TRIANGLE REDTriangle red LED is lighting when Q2s base level goes “H”LED SWQ3 BLUE LED SW Blue LED are lighting when Q3s base level goes “H”Q4 GREEN LED SW Green LED are lighting when Q4s base level goes “H”Q5 RED LED SW Red LED are lighting when Q5s ba

28、se level goes “H”Q6 SW3.3V SWSW3.3V the power supply of IC1, 3 is turned on when Q6s baselevel goes “L”Q7,8 SW5V SWSW5V the power supply of IC2, 6 is turned on when Q8s baselevel goes “H”Q9,10 FL3.3V SW FL+3.3V (VDD1) is turned on when Q9s base level goes “H”Q12 FL BLK SW ED1 is lighted on when Q7s

29、base level goes “H”Q11,13 FL+B SW FL+B (VDD2) is turned on when Q11s base level goes “H” CD PLAYER UNIT (X32-5730-0x)Ref. No. Application / Function Operation / Condition / CompatibilityIC1 -com for mechanism controlIC2 LSI for CD signal processing +RF AMPIC4 BTL driver SP,SL (including LO/EJ) motor

30、 and PU actuatorIC5 SW3.3V regulator 3.3V power supply for IC2, PU, and IC18 digital sectionIC13 Audio active filter Secondary LPFIC14 A5V regulator 5V power supply for DACIC15 Compacted audio decoding DSP AC drive decoder,MP3/WMA/AAC decoderIC16 Compacted audio expanding SDRAMIC17 Decoder software,

31、 unique ID storage flash ROMIC18 Audio external 24-bit D-A converterIC19 BU3.3V regulator 3.3V power supply for -comIC20 1.8V regulator 1.8V power supply for core section of IC15IC21 Decoder/SDRAM/Flash ROM 3.3V regulator 3.3V power supply for port section of IC15, IC16 and IC17Q1,4 Level shift (3.3

32、V-5V) FETKDC-W8534/W8534YKDC-X7906COMPONENTS DESCRIPTIONRef. No. Application / Function Operation / Condition / CompatibilityQ3,5,6 Level shift (3.3V-5V) transistor with 2 elementsQ7 Level shift (3.3V-5V) transistorQ8 APC (Auto Power Control) transistorQ9,10Transistor for preceding beam delaying SW

33、duringnon-searchQ11 A5V power supply constant circuit FETQ12,13 SW8V SW transistorQ14,15 SDRAM 3.3V power supply SW transistor SDRAM power supply is turned off when /CSRST is “L”.D2UPD63712GC built-in resetting terminal static protectiondiodeD3 Protection diode for pick-up laser diodeD4,D5 Diode for

34、 securing audio L-R reference voltageD6Diode for control terminals “L” confirmation for IC20and IC21MICROCOMPUTERS TERMINAL DESCRIPTION SYSTEM MICROCOMPUTER : 30625MGPA78GP/30625MWPA79GP (X34 : IC102)Pin No. Pin Name I/O Function Processing Operation1 VREF - Analog reference voltage2AVCC -3 LX DATA

35、S I Data from slave unit4 LX DATA M O Data to slave unit5 LX CLK I/O LX-BUS clock6 WIRED REMO I External display remoter controller7 LX MUTE I Mute request from slave unit H : MUTE ON, L : MUTE OFF8AUD SDA O E-VOL data SPI communication9AUD SEL O E-VOL control SPI communication10 AUD SCL O E-VOL clo

36、ck SPI communication10 DSP_SCL O DSP clock output terminal SPI communication11 DAC RST O DAC reset L : DAC RESET11 NC O Not used L-output for models without DSP12 NC - Not used13 BYTE - GND7KDC-W8534/W8534YKDC-X790MICROCOMPUTERS TERMINAL DESCRIPTIONPin No. Pin Name I/O Function Processing Operation1

37、4 CNVSS -15 XCIN I Clock 32,768kHz16 XCOUT I Clock 32,768kHz17 RESET I Reset18 XOUT - Clock 12MHz19 VSS - GND20 XIN - Clock 12MHz21 VCC1 -22 NMI I Not used23 PANEL DET I Panel detection H : No panel, L : Panel exists24 RDS CLK I RDS decoder clock24 NC O Not used L-output for models without RDS/RBDS2

38、5 LX REQ S I Communication request from slave unit26 PON AM I/O AM power supply control AM in operation : H, AM not in operation : HI-Z27 LX REQ M O Communication request to slave unit28 TUN IFC OUT I Front-end IFC out H : Station exists, L : No station29 NC O Not used30 RDS AFS M I/O Time constant

39、switching when noise detected Refer to Truth Value Table r30 NC O Not used L-output for models without RDS/RBDS31 RDS QUAL I RDS decoder QUAL31 NC O Not used L-output for models without RDS/RBDS32 RDS DATA I RDS decoder DATA32 NC O Not used L-output for models without RDS/RBDS33 PWIC BEEP O Beep34 T

40、UN SCL I/O Front-end I2C clock35 TUN SDA I/O Front-end I2C data36 SYS DATA O Inside-panel communication data MAX 500kbps37 VCC1 -38 PAN DATA I Inside-panel communication data MAX 500kbps39 VSS -40 SYS REQ O Communication request from system -com41 PAN REQ I Communication request from panel42 SDA I/O

41、 I2C data input output43 SCL I/O I2C clock input output44 PON PANEL I/O Panel 5V controlON : H (Momentary power down/Panel detached)11 Minutes after ACC OFF : Hi-Z45 DSI I/O DSI control4649 NC - Not used.50 PM MOT1 O Panel motor control 1 Refer to Truth Value Table w51 PM MOT2 O Panel motor control

42、2 Refer to Truth Value Table w52 EPM I Flash EPM53 PM OPEN I Panel full open detection Refer to Truth Value Table e5456 NC - Not usedKDC-W8534/W8534YKDC-X7908MICROCOMPUTERS TERMINAL DESCRIPTIONPin No. Pin Name I/O Function Processing Operation57 P5V DIS I/O Panel 5V discharge control H : Discharge,

43、Other : Hi-Z58 PM CLOSE I Panel mechanism close detection Refer to Truth Value Table e59 ROMCOR DET I E2PROM write request H : Write60 PM DET I Panel mechanism detection H : Function check in progress61 SC CON O Inside-panel communication (Chip enable when flash) POWER OFF, ACC OFF : L62 NC - Not us

44、ed63 TUN TYPE1 I Destination setting 1TUN TYPE1 : L, TUN TYPE2 : LRefer to Truth Value Table t64 TUN TYPE2 I Destination setting 2TUN TYPE1 : L, TUN TYPE2 : LRefer to Truth Value Table t65,66 NC - Not used67 CD DISC12 SW I 12cm CD detection67 NC O Not used when MD Output L fixed when MD68 CD LOS SW

45、I CD loading detection68 MD_LOS_EJE_SW I MD DISC position detection terminal69 CD MUTE R I CD mute (Rch) request L : Rch mute request69 NC O Not used when MD Output L fixed when MD70 CD MUTE L I CD mute (Lch) request L : Lch mute request70 MD_MUTE I MD MUTE request terminal L : MUTE request71 CD MRS

46、T O CD mechanism microcomputer reset L : Reset, H : Normal71 MD_MRST O MD mechanism -com RST terminal H : Normal, L : RESET72 CD MSTOP O CD mechanism microcomputer stopL : Mechanism microcomputer stop,H : Mechanism microcomputer in operation72 MD_MSTOP O MD mechanism -com stop terminalH : Mechanism

47、-com in operation,L : Mechanism -com stop73 CD_DISC8_SW I CD disc detection terminal (8cm) (J only)73 NC - Not used74 CD LOE LIM SW I CD detection (Chucking SW) H : Loading complete, L : No disc74 MD_LOE_LIM_SW I MD detection terminal (chucking SW) H : Loading completed, L : No disc75 CD LOEJ I/O CD

48、 motor control Refer to Truth Value Table q75 MD_LOEJ I/O MD motor control terminal Refer to Truth Value Table q76 CD MOTOR O CD motor control Refer to Truth Value Table q76 MD_MOTOR O MD motor control terminal Refer to Truth Value Table q77 PON ILLUMI I/O Key illumination power supply control ON :

49、H, OFF : Hi-Z78 PON CD I/O CD/WMA power supply control At time of CD source: H, Other than CD : Hi-Z78 PON_MD I/O MD servo power supply control terminalH : When MD mechanism in operation,Hi-Z : When other than MD source79 PON O Power supply control POWER ON : H, POWER OFF : L80 PON FL+B O Fruorescent indicator tube bias power supply control POWER ON : H, POWER OFF or display black out : L81 PON FDC I/O Fruorescent indicator tube filament power supply control POWER ON : L, POWER OFF or display black out : Hi-Z82 F SEL1 O SW-Reg frequen