Kenwood-KDCX-679-Service-Manual电路原理图.pdf

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1、 2004-1 PRINTED IN JAPANB53-0122-00 (N)764CD RECEIVERKDC-X679SERVICE MANUALSize AA battery(Not suplied)Plastic cabinet assy(A02-2732-03)Lever(D10-4589-04) x2Screw(N09-6212-05)DC cord(E30-6294-05)Screw set(N99-1723-05)Mounting hardware assy(J21-9716-03)Panel assy (A64-3212-12) Remote controller assy

2、(RC-505)(A70-2059-05)CD MECHANISM EXTENSION CORD (24P) : W05-0935-00MODEL TDF PANEL No. TDF NAMEKDC-X679 Y33-1990-60 TDF-46DXTDF PANEL INFORMATIONEscutcheon(B07-3083-02) KDC-X6792BUBUSW5BU5SW3F+/F-FL+B(X34-300)(X16-251)F/ELX-BUSPANEL-MECHADXM6540WDXM6110WCDINGAINSTDMAINSUBPHONE/NAVIINPUT-MPXINGAIN+T

3、REBLEBASSVOLUMEMID0AUTOZEROUT-SEL SOFTMUTEFRONTREARNF/RFRONTREARNFFADERDCDETOFFSETSYSTEM ES+E-VOLPW-ICPRE-OUTPRE-OUTPRE-OUTSP-OUTMUTE 5V PREMUTE 5V PREMUTE 5V PREACCACC-DETREG.ANT-SWSERVOCDREG. P-CONREG. BUSW BU5VPREREG.DC/DCSW11VFLF+/F-FL +BPRESW5V5VMECHAPANELDRIVER+B5VBU5VILL+BA8VCD-4.7VBU-DETANT-

4、CONSYSTEM u-COMREMOKEYMATRIXu-COMPANELSHIFTLEVELFLSWAC INMUTEMUTEMETERLEVELA2IC2IC14IC5Q56,57Q58,59IC1IC3 IC1ED1 Q3 A1IC20 Q15,16IC7Q35IC3,Q8Q27Q25Q10,11Q7,9Q3 Q1,2IC8,Q17,20,23Q36IC15IC17IC16Q49,50Q51,52Q47,48IC4SW REG.BU5MPXCHCDNAVICH/AUXACIN0ACIN1ACIN2ACIN3ACOUTSUBIN1 : HPFIN2 : 2ZONEIN3 : LPFACI

5、N 3+LPF: FREE ONLY2ZONENFRDCMUTE L/RFRONTMUTE L/RREARMUTE L/RNFR/LR/RF/LF/RMONO 2chPON P-CONPONPON CD/MDPONAUDIOPWICPOWERDETPON ILLTYPEPANELFL+BFCD SERVOBLOCK DIAGRAMKDC-X6793 SUB-CIRCUIT UNIT (X16-2510-10)Ref. No. Application / Function Operation / Condition / CompatibilityIC1 Panel comIC2 3.3V Reg

6、ulater The power supply of IC and VFD (Logic) which are driven by 3.3VIC3 Remote Control ICIC4 Buffer IC It is change into 3.3V from 5VQ1 FL BLK SW VFD is turned on when Q1s base level goes “H”Q2,3 FL+B SW FL+B (VDD2) is turned on when Q2s base level goes “H”Q4 SW5V The power supply of IC3 is turned

7、 on when Q4s base level goes “L”Q6 LED SW LED is turned on when Q6s base level goes “H”Q7,9 Red LED SW RED LED is turned on when Q7s base level goes “L”Q8,10 Green LED SW GREEN LED is turned on when Q8s base level goes “L”Q11,12 Blue LED SW BLUE LED is turned on when Q11s base level goes “L” ELECTRI

8、C UNIT (X34-3000-10)Ref. No. Application / Function Operation / Condition / CompatibilityIC1 System COM Controls FM/AM tuner, the changer, CD/MD mechanism, Panel, volume and tone.IC2 E.Vol & N.C.MPX Controls the source, volume, tone and FM multiplex detectorIC3 A8V Ref Power Supply Output 1.27VIC4 P

9、ower IC Amplifies the front L/R and the rear L/R to 50W or 47W maximum.IC5 System Es 4HPF&1Gain ControllIC7 SW Regulator Power Supply for mp3IC8 9V AVR Power Suppil for 5V Pre OutIC10 Muting logic IC Controls logic for muting.IC11 Reset IC “L” when detection voltage goes below 3.6V or less.IC13 Pane

10、l mecha motor driver Panel mecha controlIC14 Level meter Buffer The signal of IC2 is sent to Panel comIC1517 5V Pre-out AmpIC20 SW Regulator Power Supply for VFDQ1,2 B.U.5V AVR While BU is applied, BU5V AVR outputs +5V.Q3,4 SW5V When Q4base goes Hi, SW5V outputs +5V.Q5 SW14V When Q52pin goes Hi, SW1

11、4V outputs 14V.Q6,8 AUDIO8V AVR When Q62in goes Hi, A8V AVR outputs 8.0V.Q7,9 SERVO+B AVR When Q9base goes Hi, S+B AVR outputs 7.5V.COMPONENTS DESCRIPTIONINPanel mechaIN1 IN2LL WAITLH OPENHL CLOSEHH STOPKDC-X6794Ref. No. Application / Function Operation / Condition / CompatibilityQ10,11 SERVO+B AVR

12、(Panel Mecha) When Q10base goes Hi, S+B AVR outputs 8.5V.Q12 SW for IC7 When Q12base gose Lo, IC7 is turned on.Q13,15,16 FL&ILL AVR When Q132pin goes Hi, ILL AVR outputs 10.5V.Q17,18 AUDIO 10.5V AVR When Q16base goes Hi, AVR outputs 10.5V.Q1921 Pre-Amp -9V AVRQ19 and 21 works as a differential ampli

13、fier, Q20 works as a driver and -9.1V is suppliedto OP Amp for Pre-out.Q2224 Pre-Amp +9V AVRQ22 and 24 works as a differential amplifier, Q23 works as a driver and +9.4V is suppliedto OP Amp for Pre-out.Q25,26 P-ANT SW When Q23base goes Hi, P-ANT SW outputs 14V.Q27,30 P-CON SW When Q30base goes Hi,

14、AVR outputs 14V.Q28,29 P-CON Protection Protect Q27 by turning on when P-CON output is grounded.Q31 Ex Amp Control BufferQ32 Small lamp det SW When Q32base goes Hi, Q32 is turned on.Q33,34 SERGE Det. When Q33base goes Hi, IC4 is changed into a standby state.Q35 BU det When Q35base gose Hi, Q27 is tu

15、rned on.Q36 ACC det When Q36base gose Hi, Q29 is turned on.Q37,38 Pre-out mute driver When a base gose Lo, mute driver is turned on.Q39 Sub-out mute driver When a base gose Lo, mute driver is turned on.Q40 AC-out mute driver When a base gose Lo, mute driver is turned on.Q41,42 AM+B SW When Q42base g

16、ose Hi, AM+B is out.DSI lights when the base is “L”.Q44 DSI Driver DSI turns off when the base is “H”.DSI turns on and off when panel is taken off.Q45,46 Panel 5V SW When Q46base gose Hi, PANEL 5V is out.Q4752 Pre-out mute SW When a base gose Hi, Pre-out is muted.Q56,57 AC-out mute SW When a base go

17、se Hi, AC-out is muted.Q58,59 Sub-out mute SW When a base gose Hi, Sub-out is muted.Q60 Level meter mute SW When a base gose Hi, Level meter is muted.COMPONENTS DESCRIPTIONKDC-X6795MICROCOMPUTERS TERMINAL DESCRIPTION SYSTEM MICROCOMPUTER : 30624MGPA27GP (X34 : IC1)Pin No. Pin Name Module I/O Applica

18、tionTruth ValueProcessing Operation DescriptionTable14 NC O Not used Output : L5 OPEL_REMO EXTRA I External display remote control input Not used6 BYTE - 0V GND direct connection7 CNVSS I Used when writing to system com Pull down8 XCIN I Sub clock input (32.768kHz)9 XCOUT I Sub clock output (32.768k

19、Hz)10 RESET - Reset terminal L : Reset11 XOUT - Main clock output (16.0MHz)12 VSS -13 XIN - Main clock input (16.0MHz)14 VCC1 -15 NMI I Not used16 ES_SW EXTRA O Not used17 NC I Not used18 LX_REQ_S LX_M I Communication request from slave unit19 PON_AM TUNER O AM power supply control AM operation : H,

20、 Non-AM operation : L20 MUTE_LEVEL EXTRA O LEVEL_METER MUTE terminal Mute ON : H, Mute OFF : L21 TUN_IFC_OUT TUNER I F/E IFC OUT input terminal H : Station detect, L : No detect22 RDS_AFS_L TUNER I/O Constant switching at noise detect r Refer to truth value table.23 RDS_AFS_M TUNER I/O Constant swit

21、ching at noise detect r Refer to truth value table.24,25 NC I Not used26 PWIC_BEEP PWIC O Beep output27 TUN_SCL TUNER I/O F/E I2C clock output terminal (MAX 400kHz)28 TUN_SDA TUNER I/O F/E I2C data input/output terminal29 PAN_DATA to PANEL I/O Between-panel communication (Bi-directional)30 PAN_CLK t

22、o PANEL I/O Between-panel communication clock31 PAN_SCREQ to PANEL I/OBetween-panel communication requesttermnal (Used also for PN_DET)32 PAN_PNREQ to PANEL I Between-panel communication request terminalAUD_SDA AUDIO I/O E-VOL I2C data input/output terminal33 IC5_SDA AUDIO I/O IC5 data output termin

23、alCD_SDA CD I/O CD mechanism I2C data input/output terminalAUD_SCL AUDIO I/O E-VOL I2C clock output terminal34 IC5_SCL AUDIO I/O IC5 clock output terminalCD_SCL CD I/O CD mechanism I2C clock output terminal35 PON_PAN Power supply I/O Panel 5V control terminalON : H, Momentary power down, Panel comeo

24、ff and 11 minutes after ACC_OFF : Hi-ZKDC-X6796MICROCOMPUTERS TERMINAL DESCRIPTIONPin No. Pin Name Module I/O ApplicationTruth ValueProcessing Operation DescriptionTable36 DSI EXTRA I/O (D) SI control terminalOFF : Hi-Z, Panel come off : Pulse driven,ILL_ON and OPEN (Power_ON) : H37 PM_MOT1 P-MECHA

25、OPanel motor control 1 w Refer to truth value table.38 PM_MOT2 P-MECHA OPanel motor control 2 w Refer to truth value table.39 EPM I FLASH EPM input terminal40 PM_OPEN P-MECHA IPanel full open detect e Refer to truth value table.41 PM_CLOSE P-MECHA IPanel mechanism close detect e Refer to truth value

26、 table.42 PAN_RST to PANEL O Panel com reset outputNormal : H, Reset, Momentary power down, Panelis detached and 11 minutes after ACC_OFF : L43 PM_DET P-MECHA IPanel mechanism detect H : Function check44 SC_CON to PANEL OBetween panel Communication controlPOWER OFF, ACC OFF : L(FLASH CE)45 CD_DISC12

27、_SW CD I CD detect terminal (12cm)46 CD_LOS_SW CD I CD loading detect terminal47 CD_MUTE_R CD I CD MUTE (Rch) request terminal L : Rch mute request48 CD_MUTE_L CD I CD MUTE (Lch) request terminal L : Lch mute request49 CD_MRST CD O CD mechanism com RST terminal H : Normal, L : Reset50 CD_MSTOP CD O

28、CD mechanism com stop terminalH : Mechanism com operation,L : Mechanism com stop51 CD_DISC8_SW CD I CD detect terminal (8cm)52 CD_LOE_LIM_SW CD I CD detect terminal (chucking SW) H : Loading complete, L : No disk53 CD_LOEJ CD I/O CD motor control terminal i Refer to truth value table.54 CD_MOTOR CD

29、O CD motor control terminal i Refer to truth value table.55 TUN_TYPE1 TUNER I Destination setting 1 t Refer to truth value table.56 TUN_TYPE0 TUNER I Destination setting 0 t Refer to truth value table.57 PON_ILL Power supply I/O Key ILL power supply control ON : H, OFF : Hi-Z58 PON_CD CD O CD WMA po

30、wer supply control terminalCD : L, Other than CD : H, When RESET,quicker than M-STOP L, Normal CD : NC59 PON Power supply I/O Power supply control Power ON : H, Power OFF : Hi-Z60 VCC2 -61 COR_DET TYPE I E2PROM write request H : Write62 VSS -6365 TYPE_0TYPE_2 TYPE I Destination switching y Refer to

31、truth value table.66,67 NC O Not used Output : L68 OPEL_DATA EXTRA I/O External display DATA Not used69 OPEL_CLK EXTRA I/O External display CLK Not used70 OPEL_CE EXTRA I/O External display control request Not used71 EXT_CONT EXTRA O External amp control72 P_CON Power supply I/O External amp control

32、 terminal Power ON : H, Power OFF : Hi-Z, All OFF : Hi-ZKDC-X6797MICROCOMPUTERS TERMINAL DESCRIPTIONPin No. Pin Name Module I/O ApplicationTruth ValueProcessing Operation DescriptionTable73 ANT_CONT TUNER O Power antenna control Tuner ON : H74 ILLMI_DET EXTRA I Dimmer ILL detect L : ON, H : OFF75 BU

33、_DET Power supply I Momentary power down detectBU detect : L, BU no detect and Momentarypower down : H76 ACC_DET Power supply IACC Power supply detect ACC detect : L, ACC no detect : H77 (PWIC_SVR) PWIC O SVR electrical discharge circuitPower OFF and Momentary power down, for5s : H and then L78 PWIC

34、_MUTE PWIC O Power IC MUTE terminal All OFF and Momentary power down : L, TEL mute : L79 PWIC_STBY PWIC O Power IC standby control Power ON : H, Power OFF : L80 LX_CON LX_M O Startup request to slave unit H : Slave unit ON, L : Slave unit OFF81 RESET2 O MUTE terminal for reset Output : L82 MUTE AUDI

35、O O MUTE terminal ON : H, OFF : L83 MUTE_ACOUT AUDIO I/O IC2 ACOUT MUTE Muting of CD, MD and LXBUS84 MUTE_SUBOUT AUDIO I/O IC2 SUBOUT MUTE Muting of CD, MD and LXBUS in 2 zones85 MUTE_PRE_R AUDIO I/O PRE_OUT MUTE RchM MUTE R is L : L (CD), Momentary power down : L,Only in 2 zones and NAVI interrupti

36、on, Hi-Z fixed.86 MUTE_PRE_L AUDIO I/O PRE_OUT MUTE LchM MUTE R is L : L (CD), Momentary power down : L,Only in 2 zones and NAVI interruption, Hi-Z fixed.87 LINE_MUTE EXTRA I Line MUTE detectTEL mute : 1V or less, NAVI mute : 2.5V or more,1V or less and 2.5V or more : NAVI mute (J-type)88 NC O Not u

37、sed Output : L89 PWIC_DC_DET PWIC I DC offset detect terminal90 LX_RST LX_M O Hard reset to slave unit H : Reset, L : Normal91 LX_MUTE LX_M I Mute request from slave unit H : Mute ON, L : Mute OFF92 LX_REQ_M LX_M O Communication request to slave unit93 RDS_NOISE TUNER I FM noise detect terminal94 AV

38、SS -95 TUN_SMETER TUNER I S-meter input96 VREF I Analog reference potential PON is input97 AVCC -98 LX_DATA_S LX_M I Data from slave unit99 LX_DATA_M LX_M O Data to slave unit100 LX_CLK LX_M I/O LX BUS clockKDC-X6798MICROCOMPUTERS TERMINAL DESCRIPTION Truth Value Tablew Panel Motor ControlOPEN CLOSE

39、 STOP WAITPM_MOT1 L H H LPM_MOT2 H L H Le Panel Mechanism ControlFULL_OPEN FULL_CLOSE OTHERPM_OPEN H L LPM_CLOSE H L Ht Tuner TypeTUN_TYPE1 (55 pin) TUN_TYPE0 (56 pin)Market Model L LOEM Model 1 L HOEM Model 2 H LOEM Model 3 H Hy 30624MGPA27GPTYPE_2 TYPE_1 TYPE_0Model Name Media(65 pin) (64 pin) (63

40、 pin)000KDC-MP625 K WMA/MP3001KDC-W6527/Y E WMA/MP3010KDC-X679 K WMA/MP3011KDC-MP858 M WMA/MP3100f-CD07 J WMA/MP3101KDC-MP6025 K WMA/MP3110KMD-6527 E MD111f-MD07 J MDr AFS ControlRDS_AFS_M RDS_AFS_L ConditionAFS LOW L L No sound output in AF searchAFS MID L Hi-Z Sound output in AF searchAFS HIGH Hi-

41、Z Hi-Z Normal Receptioni CD_MOTOR, CD_LOEJCD_MOTOR CD_LOEJStop L Hi-zLoad H LEject H HBrake H Hi-zUse Prohibited L LKDC-X6799MICROCOMPUTERS TERMINAL DESCRIPTION PANEL MICROCOMPUTER : 30622MWP111GP (X16-251 : IC1)Pin No. Pin Name Module I/O Application Processing Operation Description1NCONot used Out

42、put : L2 REMO REMO I Remote control signal input Pulse width DET3 GSO0 FL O FL dot section data output terminal 0 Data output4NCONot used Output : L5 GCLK0 FL O FL dot section clock output terminal 0 2.0MHz6 BYTE com - Not used 0V GND direct connection7 CNVSS com - Used when rewriting com8,9 NC O No

43、t used Output : L10 RESET com - Reset terminal L : Reset11 XOUT com - Clock output12 VSS com - GND terminal13 XIN com - Clock input 10.000MHz14 VCC1 com - Positive power supply terminal15 NMI I Not used16 SOURCE KEY I Source key input H : ON, L : OFF17 EJECT KEY I Eject key input H : ON, L : OFF18 S

44、CCON to SYS I System com communication panel operation control H : Operation19 NC O Not used Output : L20 GCP FL O FL dot section gradation occurrence Gradation occurrence21 NC O Not used Output : L22 GLAT FL O FL dot section data latch output Data latch output23 NC O Not used Output : L24 GBK FL O

45、FL dot section data blanking output H : Light ON, L : Light OFF25,26 NC O Not used Output : L27 SCL O E2PROM write clock terminalWhen E2P_DET is H : Input,Other : I2C clock output terminal28 SDA O E2PROM write terminalWhen E2P_DET is H : Input,Other : I2C data output terminal29 PN_SDA to SYS I/O Sys

46、tem com communication data input/output terminal30 PN_SCL to SYS I/O System com communication clock input/output terminal 100kHz31 SC_REQ to SYS I Panel communication request input32 PN_REQ to SYS O Panel communication request output L : Transmitting panel side data33 GSO1 FL O FL dot section data o

47、utput terminal 1 Data output34 NC O Not used Output : L35 GCLK1 FL I FL dot section clock input terminal GCLK0 input36 E2P_DET I E2PROM write request H : Write37,38 NC O Not used Output : L39 EPM I Used when rewriting com4043 NC O Not used Output : LKDC-X67910MICROCOMPUTERS TERMINAL DESCRIPTIONPin N

48、o. Pin Name Module I/O Application Processing Operation Description44 CE I Used when rewriting com4549 NC O Not used Output : L50 PON_DC_DC Power supply I/O DC/DC control terminal H : FL+B ON, Hi-Z : FL+B OFF51 BLUE_LED Power supply I/O ILL BLUE ON/OFF Hi-Z : Light OFF, L : Light ON52 NC O Not used

49、Output : L53 PON Power supply I/O Power supply control terminal L : ON, Hi-Z : OFF54 FL_VDD_ON Power supply O FL3.3V Power supply control request H : ON5559 NC O Not used Output : L60 VCC2 com - Positive power supply terminal61 NC O Not used Output : L62 VSS com - GND terminal6372 NC O Not used Output : L73 ATT_KEY KEY I ATT key input H : OFF, L : ON74 VOL_A KEY I VOL key input Pulse width DET75 VOL_B KEY I VOL key input Pulse width DET76,77 NC O Not used Output : L78 RED_LED Power supply I/O ILL RED ON/OFF Hi-Z : Li