Kenwood-KDCX-879-Service-Manual(2) 电路图 维修手册.pdf

《Kenwood-KDCX-879-Service-Manual(2) 电路图 维修手册.pdf》由会员分享，可在线阅读，更多相关《Kenwood-KDCX-879-Service-Manual(2) 电路图 维修手册.pdf（46页珍藏版）》请在收音机爱好者资料库上搜索。

1、 2004-02 PRINTED IN JAPAN B53-0128-00 (N) 764 CD RECEIVER KDC-X879 SERVICE MANUAL Size AA Battery (Not Supplied) Escutcheon (B07-3079-01) Plastic cabinet assy (A02-2731-13) Mounting hardware assy (J21-9823-03) Lever (D10-4674-04) x 2 Screw set (N99-1723-05) CD mechanism extension cord (24PIN) : W05-

2、0935-00 Screw set (N99-1734-05) DC cord (E30-6294-05) Remote controller assy (A70-2040-05) : RC-505 TDF PANEL INFORMATION MODEL PARTS NO. PANEL NAME KDC-X879 Y33-1790-60 TDF-M9000 Panel assy (A64-3227-01) Panel assy (A64-3249-02) RadioFans.CN 收音机爱 好者资料库 KDC-X879 2 TUNER CD CH MECHA PANEL TDF UNIT SW

3、ITCH UNIT (X16-208) (X16-256) (X34- ) (X16-253) DISPLAY UNIT BUFFER RDS DECODER BUFFER REMO RESET SW KEY MATRIX FL SYSTEM MPX E-VOL & ACC DET TEL MUTE B.U DET SYSTEM DRIVER MUTE POWER IC ACC TEL MUTE BACK UP SP OUT (FL) RESET KEY ILL IC14 IC2 IC1 IC4 IC8 IC9 Q303,304 AM+B AGC ES+ PRE MUTE PRE MUTE P

4、RE MUTE PRE OUT (FRONT) PRE OUT (REAR) (SUB WOOFER) PRE OUT AUX IN OP AMP OP AMP OP AMP SP OUT (FR) SP OUT (RL) SP OUT (RR) EXT AMP DIMMERDIMMER EXT.AMP.CON ANT-CONANT CON P-CONP CON WIRED REMO/ OPEL DISP I/F FOCUS SW WOW IC5 IC20 IC6 IC9 IC13 IC12 IC11 Q207,208 Q205,206 Q203,204 BU5V SW 5V SW 14V 5

5、V SERVO FL+B SW REG A8V PANEL Q1,2 Q3,601 Q502,503 Q4,5 Q6-8 Q9,602 BU5V SW5V PANEL5V SW14V DC/DCA8V SERVO CD4.7V IC16 MOTOR DRDR MOTOR IC15 DC/DC ROTARY ENCODER IC7 LEVEL SHIFT LEVEL SHIFT IC8 u-COM IC11 IC2 MASK ROM 2.5V ROM FLASH IC4 BPF PANEL SW5V IC6 3.3V SW3.3V Q5 FL+B Q4 FL3.3V Q2,3 EEPROM EE

6、P5V Q501 IC1 Q23,24 Q26 Q25 IC18 Q27 Q29 IC10 Q6,10 Q11-14 IC19 LEDLED EEPROM MICROPROCESSOR S-METER AUDIO OUT SERVO 8V BU5V CD4.7V BACK UP FM AM CD QUAL CH PANEL5 KEY BU5V 8V SW5V 8V8V SW5V BPF 8V 8V 9V 9V 9V 8V 9V SW5V FL+B FAC AGC 8V 8V BU5V BU5V BU5V SERVO ILL+ SW5V BLOCK DIAGRAM RadioFans.CN 收音

7、机爱 好者资料库 KDC-X879 3 BLOCK DIAGRAM S7V A8V BU5V D5V SW3.3V BU3.3V BU2.5V SW3.3V BU3.3V BU5V A8V BU3.3V A5V (X32-5560-00/0-01) CD PLAYER UNIT (X32-5590-00/0-01) IC1 u-COM Q8 APC Q10 C-SW IC4 MOTOR DRIVER M M M1 M2 SPINDLE MOTOR LOADING MOTOR SLED & S1 S2 Q3,5,6 S3 S4 (0-01)ONLY Q7 Q1,4 LEVEL SHIFT REG

8、 3.3V/2.5V IC15 3.3V REG IC5 LEVEL SHIFT IC3 MP3/WMA DECODER IC2 SERVO DSP (DAC,RF AMP) FO COIL TR COIL (PICKUP) A C F B E DPU1 LD PD CN2 CN1 LEVEL SHIFT DAC IC10 IC14 5V REG FILTER AUDIO UNIT Q9 C-SW 15 DATA CLK MUTER MUTEL MSTOP MRST 10 LOS 20 1 8EJE A8V L AGND DOUT R MOTOR LO/EJ 5 SGND S7V 12EJE

9、LOE/LIM X2 16.00MHz 16.898MHz X1 OPEN D5 DGND 24 BU5 3 3 8 8 2 4 4 4 VREF SLD TRK FCS SPD 516 PON SGND DGND DGND DGND 3 AGND 3 DGND DMUTE SGND 2 2 AGNDDGND DATA DGND DGND AGND SDO DGND DGND DGND SUB CIRCUIT UNIT (X16-2080-10) Ref No.Application / FunctionsOperation / Condition / Compatibility IC1E2P

10、ROME2PROM for security DISPLAY UNIT (X16-2530-11) Ref No.Application / FunctionsOperation / Condition / Compatibility IC1Panel microprocessorPanel control microprocessor IC2ROM ICGraphic ROM IC4AVRFor 3.3V power supply IC5AVRFor 2.5V power supply IC6Buffer ICLevel shift buffer IC (5V3.3V) IC7Buffer

11、ICLevel shift buffer IC (3.3V5V) IC8Remote control ICFor Remote control sensor IC9Logic ICControl for FL contrast IC10Analog ICSpectrum analyzer IC COMPONENTS DESCRIPTION RadioFans.CN 收音机爱 好者资料库 KDC-X879 4 Ref No.Application / FunctionsOperation / Condition / Compatibility Q13.3V RegulatorWhile PAN5

12、V is applied when 3.3V regulator output is +3.3V Q22.5V RegulatorWhile PAN5V is applied when 2.5V regulator output is +2.5V Q3,4FL +B SWFL +B (VDD1) is turned on when Q3 base level goes H Q53.3V SWSW3.3V is turned on when Q5 base level goes L Q6,200FL 3.3V SWFL +3.3V (VDD1) is turned on when Q200 ba

13、se level goes H Q7,8Remote control ON SWThe power supply of IC8, 10 is turned on when Q10 base level goes H Q9FL BLK SWVFD is turned on when Q9 base level goes H Q11Red LED SWRed LED is turned on when Q11 base level goes H SWITCH UNIT (X16-2560-10) Ref No.Application / FunctionsOperation / Condition

14、 / Compatibility Q1DSI LED SWDSI LED blinks when Q1 base level goes H/L Q2KEY Illumination SW (Green)KEY Illumination SW “ON” when the Q2 base level goes H Q3KEY Illumination SW (Red)KEY Illumination SW “ON” when the Q3 base level goes H Q4KEY Illumination SW (Blue)KEY Illumination SW “ON” when the

15、Q4 base level goes H CD PLAYER UNIT (X32-5590-00) Ref No.Application / FunctionsOperation / Condition / Compatibility IC1Mechanism control microprocessor- IC2DSPCD signal processor, RF amp, Servo control IC3Decoder ICMP3/WMA decoder IC4BTL driverFocus, Tracking coil, Feed and Spindle motor driver IC

16、 IC5AVRSW3.3V AVR IC10Audio DAC- IC13LPFAudio LPF IC14AVRA 5.0V AVR IC15AVRBU3.3V & BU2.5V AVR Q1,4Level shift FETLevel shift (3.3V - 5.0V) Q3,5Level shift TRLevel shift (3.3V - 5.0V) Q6Level shift TRLevel shift (3.3V - 5.0V) Q7Level shift TRLevel shift (3.3V - 5.0V) Q8,11,12APCAuto power control &

17、A 5V constant current circuit Q9,10Switching TRSub beam delay control switch ELECTRIC UNIT (X34-3030-11) Ref No.Application / FunctionsOperation / Condition / Compatibility IC1System control ICSystem control microprocessor IC2E-VOL & tuner ICE-VOL. FM/AM tuner & stereo decoder IC3Power supply ICFor

18、A8V AVR IC4Audio power ICAudio power amplifier COMPONENTS DESCRIPTION KDC-X879 5 Ref No.Application / FunctionsOperation / Condition / Compatibility IC5System ICFor System Es control IC6Audio control ICFor WOW/FOCUS control IC7Power supply IC-9V AVR (For 4.5V Pre-out) IC8Reset ICWhen BU5V line volta

19、ge is less than 3.5V, this IC output line is “L” IC9Muting logic ICControl for MUTE, P-ANT & RESET muting IC10Buffer ICFor spectrum analyzer IC1113OP AMPFor 4.5V Pre-out IC14RDS decoderDecode for RDS signal IC15,16Motor driverControl for Panel mechanism motor IC18P-CON ICPower control IC IC19Power s

20、upply ICSwitching regulator IC for CD4.7V IC20Analog SWControl for WOW/FOCUS IC (IC4) Q1,2BU 5V AVRWhile BU is applied when BU5V regulator output is +5V Q3,601SW5V AVRWhen Q601base level goes H, SW5V regulator output is +5V Q4,5SW14V AVRWhen Q5 base level goes H, SW14V regulator output is +14V Q68Au

21、dio 8V AVRWhen Q6 base level goes H, A8V regulator output is +8.3V Q9,602Servo +B AVRWhen Q602 base level goes H, S+B regulator output is +7.5V Q1114Illumination & DC/DC +B AVRWhen Q11 base level goes H, AVR output is +9.2V Q15,16Audio 10.5V AVRWhen Q16 base level goes H, AVR output is +10.5V Q1719P

22、re Amp & -9V AVR Q18,19 work as differential amplifier, Q17 wark as driver and -9.1V is supplied to OP AMP for Pre-out Q2022Pre Amp & +9V AVR Q20,22 work as differential amplifier, Q21 wark as driver and +9.4V is supplied to OP AMP for Pre-out Q23,24P-ANT SWWhen Q23 base level goes H, P-ANT SW outpu

23、t is +14V Q25BufferEX amp control buffer Q26Small lamp det. SWWhen Q26 base level goes H, Q26 turned ON Q27BU detectorWhen Q27 base level goes H, Q27 turned ON Q29ACC detectorWhen Q29 base level goes H, Q29 turned ON Q30,31Muting driverWhen base level goes L, muting driver is turned ON Q201BufferNoi

24、se detect buffer amp Q202E-VOL muting SWWhen Q202 base level goes H, muting SW is turned ON Q203208Pre-out muting SWWhen base level goes H, Pre-output is muted Q210AGCFor AGC for spectrum analyzer Q303,304AM +B SWWhen Q303 base level goes H, AM +B is out to tuner unit Q305BufferComposite signal buff

25、er for RDS Q501E2P 5V SWWhen Q501 base level goes L, E2P 5V is out for E2PROM Q502,503Panel 5V SWWhen Q503 base level goes H, Panel 5V is out Q603SWWhen Q603 base level goes H, Q603 is turned ON COMPONENTS DESCRIPTION KDC-X879 6 SYSTEM MICROPROCESSOR : UPD703030GC041 (X34-303 : IC1) Pin No.Pin NameI

26、/ODescription / Processing OperationFig. 1PLL DATAI/OData input/output terminal for Tuner front-end 2AM+BI/OAM+B (AM operation : H) 3(FM+B)OFM+B (FM operation : H, Last FM : H with RDS, RBDS model) 4PAN E2P DATAI/OVariable illumination D/A converter, E2PROM DATA terminal 5PAN E2P CLKI/OVariable illu

27、mination D/A converter, E2PROM CLK terminal 6EVDD-VDD 5V 7EVSS-GND 8AFSOTime constant switching for noise detection (FM seek, AF search, AUTO 0 : L, Receiving : H) 9BEEPOBEEP audio output terminal 10REMOIRemote control input terminal 11P MUTEOAudio power IC muting control terminal (POWER OFF, ALL OF

28、F, TEL MUTE : L) 12SVROAudio power IC SVR discharge circuit control terminal 13IC2 SDAI/OCD mechanism, IC2, IC5, ROM correction DATA line 14IC2 CLKI/OCD mechanism, IC2, IC5, ROM correction CLOCK line 15P STBYOAudio power IC Stand-by terminal (POWER IC ON, ALL OFF : H, POWER IC OFF : L) 16P CONI/OPow

29、er control terminal (POWER ON : H, POWER OFF, ALL OFF : Hi-Z) 17WOW MODE2OWOW control terminal1 18TEST-NC (GND) 19DIAGIOver voltage/Over current detection terminal (Normal : H, Bad condition : L) 20MUTEOMUTE output terminal (ON : OPEN, OFF : L) 21PRE MUTEROPREOUT (Rch) muting control terminal 22PRE

30、MUTELOPREOUT (Lch) muting control terminal 23BU DETIMomentary power dropped detection terminal (No Backup, Momentary power dropped : H, Backup : L) 24ACC DETIACC detection terminal (With ACC : L, Without ACC : H) 25FOCUSI/OWOW/FOCUS control terminal (FOCUS HI : H, FOCUS LOW : L) 26EXT AMP CONTOExter

31、nal amplifier control terminal 27DIMMERISmall lamp detection terminal (ON : L, OFF : H) 28ANT CONT(TYPE2)I/OAntenna control/Destination select terminal (TUNER ON : H) 29P ONI/OSW14V, SW5V control terminal (POWER ON : H, POWER OFF : Hi-Z) 30ILL ONI/OFL, illumination control terminal (ON : H, OFF : Hi

32、-Z) 31RESETIReset input terminal 32,33XT1/XT2-Sub clock (32.768KHz) 34REGC-Connect to 1F capacitor 35,36X2/X1-Main clock (20MHz) 37VSS-GND 38VDD-AVR 5V 39CLKOUT-NC 40LX REQ MOCommunication request to external slave unit (Request : L) 41LX MUTEIMute request from external slave unit (MUTE : H) MICROCO

33、MPUTERS TERMINAL DESCRIPTION KDC-X879 7 Pin No.Pin NameI/ODescription / Processing OperationFig. 42LX CONOExternal slave unit (ON : H, OFF : L) 43LX RSTOReset output to external slave unit (Normal : L, After system reset : H 400ms or more and then L) 44CD MECHA+BOCD4.7V output terminal (CD : H, Exce

34、pt CD source : L) 45,46TYPE0/TYPE1IDestination select terminal 47,48IC2 TYPE0/TYPE1IIC2 destination select terminal 49PAN5VOPanel 5V control terminal (ON : H, Momentary power dropped : Hi-Z) 50E2P5VI/OE2PROM, D/A converter power supply control terminal (ON : L, OFF : Hi-Z) 51DSII/ODSI control (ON :

35、L, OFF : Hi-Z) 52MC REQOCommunication request to panel microprocessor 53PAN RSTOReset output to panel microprocessor (Normal : H, Reset, Momentary power dropped : L) 54WOW MODE3OWOW control terminal1 55DVDD-AVR 5V 56DVSS-GND 57SC CONOPanel microprocessor control terminal (POWER OFF, ACC OFF : L) 58M

36、 RSTOReset output to CD mechanism (Normal : H, Reset : L) 59M STOPOStop request to CD mechanism (STOP : L, CD : H) 60CD SW3ICD DOWN SW detection terminal (CD disc chucking : H) 61LO/EJI/OCD mechanism loading/ eject selector (STOP, Brake : Hi-Z, LOADING : L, EJECT : H) 62MOSWOCD mechanism motor drive

37、r SW (LOADING, EJECT, Brake : H) 63FPM MOTOR BOFPM mechanism (Slider) control terminal2 64FPM MOTOR FOFPM mechanism (Slider) control terminal2 65FPM MOTOR OOFPM mechanism (Angle) control terminal2 66FPM MOTOR COFPM mechanism (Angle) control terminal2 67O DATAI/OExternal display DATA terminal2 68O CL

38、KI/OExternal display CLK terminal 69O CEI/OExternal display chip enable terminal 70M MUTERIMute request from CD mechanism (Rch ON : L) 71AVDD-AVR 5V 72AVSS-GND 73AVREFIConnect to P-ON (29PIN) 74M MUTELIMute request from CD mechanism (Lch ON : L) 75PAN DETIPANEL, E2PROM detection terminal (With panel

39、 : L, Without : H) 76PHONEIPHONE detection terminal (TEL MUTE : 1V or less, NAVI MUTE : 2.5V or more) 77FPM SW4I FPM mechanism position detect/ CD Mechanism detection terminal 2 (3.75V or more : No mechanism, 1.25V or more : H, Less than 1.25V : L) 78FPM SW1IFPM mechanism position detect terminal2 7

40、9FPM SW2IFPM mechanism position detect terminal2 80FPM SW3IFPM mechanism position detect terminal2 81FPM PHOUTIFPM mechanism position detect terminal (2.2V or more : H)2 82S METERIS meter detection terminal MICROCOMPUTERS TERMINAL DESCRIPTION KDC-X879 8 Pin No.Pin NameI/ODescription / Processing Ope

41、rationFig. 83NOISEIFM noise detection terminal 84IFC OUTIFront end IFC OUT input terminal (Receiving station : 2.5V or more) 85POWER DETIAudio power IC DC offset detection 86CD SW4I8cmDISC detection terminal (8cmDISC : L) 87R CLKIRDS decoder clock input terminal 88LX REQ SIReceive request from exter

42、nal slave unit (Request : L) 89SC REQICommunication request from panel microprocessor 90CD SW1ILOADING SW detection terminal (LOADING start, POWER OFF : L) 91CD SW2I12cmDISC detection terminal (12cmDISC, POWER OFF : L) 92R QUALIRDS decoder QUAL input terminal 93R DATAIRDS decoder DATA input terminal

43、 94LX DATA SIData input from external slave unit 95LX DATA MOData output to external slave unit 96LX CLKI/OClock input/ output with external slave unit 97PAN RXIData input from panel microprocessor 98PAN TXOData output to panel microprocessor 99WOW MODE1OWOW control terminal 100PLL CLKI/OClock input

44、/ output to Tuner front-end1 Fig.2 FPM motor control SLIDEFPM mechanism FPM MOTOR BFPM MOTOR Foperation LLStandby HLBackward operation LHForward operation HHBrake ANGLEFPM mechanism FPM MOTOR OFPM MOTOR Coperation LLStandby HLAngle open direction LHAngle close direction HHBrake Fig.1 WOW mode operat

45、ion MODEWOW MODE1 WOW MODE2 WOW MODE3FOCUS BYPASSLLLDont care TuBassLHLDont care 3D-STEREOLLHDont care FOCUS LOWHLLL (Hi-Z) FOCUS HIHLLH WOW LOWHHHL (Hi-Z) WOW HIHHHH MICROCOMPUTERS TERMINAL DESCRIPTION KDC-X879 9 PANEL MICROPROCESSOR : 703132GJ011-A (X16-253 : IC1) Pin No.Pin NameI/ODescription / P

46、rocessing Operation 17D14D8I/OExternal ROM data input/output terminal 83.3VDD-AVR 3.3V 9VSS-GND 1017D7D0I/OExternal ROM data input/output terminal 18FL GCP1OFL bright control terminal 19SC REQOCommunication request to system microprocessor (H : Request) 20MC REQIRequest from system microprocessor (H

47、 : Request) 21SC CONIPanel microprocessor control (H : While operation) 22FL BLKODisplay control SW for FL driver (H : Display ON, L : Display OFF) 232.5V VDD-AVR 2.5V 24VSS-GND 2527KS5KS3OKey scan output terminal 28,29TDI/TDO-NC 30,31KS2,1OKey scan output terminal 32TRSTINC 33ROTARY CCWIVolume inpu

48、t terminal 34ROTARY CWIVolume input terminal 35,36TMS/TCMONC 373.3VDD-AVR (3.3V) 38VSS-GND 3942KI1KI4IKey return input terminal 43FLGCP2OFL bright control terminal 44NC-NC 45SYS TXIDATA input from system microprocessor 46SYS RXODATA output to system microprocessor 47FL CLK3OClock output to FL driver

49、 48KI5IKey return input terminal (SRC, OPEN, EJECT interrupt port) 49FL DATA3ODATA output to FL driver 50SCK1IClock input from FL driver 51NC-NC 52FL DATA2ODATA output to FL driver 53CLK IN1IClock input from FL driver 54NC-NC 55FL DATA1ODATA output to FL driver 563.3VDD-AVR (3.3V) 57,58X2/X1-Main clock (5MHz) 5961CVSS/CKSEL/PSEL-GND 622.5V VDD-AVR 2.5V 63VSS-GND MICROCOMPUTERS TERMINAL DESCRIPTION KDC-X879 10 Pin No.Pin NameI/ODescription / Processing Operation 64,65MODE0,1-GND 66PAN RSTIReset signal request form system microprocessor (L : Reset) 67VREF-Connect