Kenwood-KD-CW-427-Y-Service-Manual 电路图 维修手册.pdf

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1、 2003-12 PRINTED IN JAPAN B53-0113-00 (N) 2704 CD RECEIVER KDC-MP225 KDC-MP4026/G KDC-W4527/G/GY/Y KDC-W427Y SERVICE MANUAL * Escutcheon (B07-3001-02) (B07-3098-02) Plastic cabinet assy (A02-1486-13) Mounting hardware assy (J21-9716-03) * DC cord (E30-6132-05) (E30-6286-05) * Antenna adaptor (T90-05

2、23-05) * Screw (N84-4016-46) Lever (D10-4589-04) x 2 * Screw set (N99-1719-05) CD mechanism extension cord (24PIN) : W05-0934-00 AUTO DISPMENUSCAN AUD RDMREP OFF LOUD C.S. Front glass KDC-MP225 (B10-4464-01) Panel assy KDC-MP225 (A64-3170-02) AME M.RDM + - F.SEL SCRL AUTO DISPMENUSCAN AUD RDMREP OFF

3、 LOUD Front glass KDC-MP4026 (B10-4468-01) KDC-MP4026G(B10-4469-01) Panel assy KDC-MP4026 (A64-3174-02) KDC-MP4026G(A64-3175-02) AME M.RDM + - F.SEL SCRL AUTO DISPMENUSCAN AUD RDMREP OFF LOUD Front glass KDC-W427 (B10-4555-01) Panel assy KDC-W427 (A64-3336-02) AME F.SEL SCRL ADJ DISPMENUSCAN AUD RDM

4、REP OFF LOUD Front glass KDC-W4527/Y (B10-4466-01) KDC-W4527G/GY(B10-4467-01) Panel assy KDC-W4527/Y (A64-3172-02) KDC-W4527G/GY(A64-3173-02) TI M.RDM + - F.SEL SCRL PTY * DC cord (E30-6322-05) (E30-6323-05) * Remote controller assy (A70-2040-05) : RC-505 * Not supplied * Depends on model. Refer to

5、the parts list. TDF PANEL INFORMATION MODEL PARTS NO. PANEL NAME KDC-MP225 Y33-1940-60 TDF-42D KDC-MP4026 Y33-1940-67 TDF-MP4026 KDC-MP4026G Y33-1940-63 TDF-MP4026G KDC-W4527/Y Y33-1940-64 TDF-W4527 KDC-W4527G/GY Y33-1940-65 TDF-W4527G KDC-W427Y Y33-1940-66 TDF-W427Y VOL RadioFans.CN 收音机爱 好者资料库 2 KD

6、C-MP225,MP4026/G KDC-W4527/G/GY/Y,W427Y BLOCK DIAGRAM S7V A8V BU5V D5V A3.3V SW3.3V BU3.3V BU2.5V CD PLAYER UNIT (X32-5500-00) IC1 MECHANISM CONTROL Q8 APC Q9,10 C-SW IC4 4ch BTL DRIVER M M DM1 DM2 SPINDLE MOTOR LOADING MOTOR & SLED S1 S2 IC9 DAC 3.3V AVR Q3,5,6 S3 S4 (0-01)ONLY LEVEL SHIFT Q7 Q1,4

7、LEVEL SHIFT MICROPROCESSOR AVR BU 3.3V IC6 DAC 3.3V AVR IC7 SW 3.3V AVR IC5 LEVEL SHIFT IC3 MP3/WMA DECODER IC2 PROCESSOR RF AMP/SERVO CD SIGNAL BUFFER IC8 FO COIL TR COIL (OPTICAL PICKUP) A C F B E DPU1 LD PD CN2 CN1 15 DGND DATA CLK MUTER MUTEL MSTOP MRST 10 LOS 20 1 8EJE A8V L AGND DOUT R MOTOR L

8、O/EJ 5 SGND S7V 12EJE LOE/LIM X2 16.00MHz 16.898MHz X1 OPEN D5 DGND D5 24 BU5 3 3 8 1 2 4 4 4 4 VREF SLD TRK FCS SPD 516 PON RadioFans.CN 收音机爱 好者资料库 3 KDC-MP225,MP4026/G KDC-W4527/G/GY/Y,W427Y 1200mV DXM-6060 DXM-6560 DXM-6540: 810mV : 1200mV : 1200mV 1Vpp75 Term. SWITCH UNIT (X16- ) TUNER CD/VCD CH

9、 BUFFER RDS DECODER BUFFER EEPROM REMOCON RESET SWWITH LCD DRIVER KEY MATRIX LCD DSI SYSTEM MPX E-VOL & ACC DET TEL MUTE B.U DET PRE MUTE DRIVER MUTE POWER IC THERMAL PROTECT ACC TEL MUTE BACK UP (REAR) PRE OUT SP OUT SURGE DET SERVOSERVO+BSW 14V WIRED REMO SUPPLY IC POWER ANT CON P CON RESET SW 5V

10、PANEL 5V SW5V ILL SW ILLUMI IC7 IC2 IC1 IC4 IC3 IC8 IC1 IC2 SW ANALOG AUX IN AUDIO PARK SWPARK SW MICROPROCESSOR MECHA+BMECHA +B IC VIDEO OUT IC9 IC6 to VIDEO OUT TUN SMETER AUDIO OUT TUN IFC OUT TUN SCL TUN SDA SW5V AM+B A8V CD DISC8 SW CD DISC12 SW CD LOS SW CD SDA CD SCL CD LOE LIM SW CD MUTE L C

11、D LOEJ CD MSTOP CD MRST SERVO+B A8V BU5V MECHA+B LX DATA S LX MUTE LX RST LX REQ M LX REQ S LX CLK LX COM LX DATA M BACK UP RDS QUAL S-METER RDS DATA RDS CLK FM AM MP LEVEL CD QUAL AFS CH SW5V SW5V BU5V DSI L CLK L DATAS L CE L DATAL REMO MUTE PWIC MUTE LINE MUTE ACC DE B.U DET PWIC BEEP RST BU5V A8

12、V SW5V AM+B ILLUMI A8V BU5V BU5V MODE FM AM MP3 E-TYPE 1372mV 855mV 3600mV K-TYPE 1800mV 600mV 3600mV PWIC STBY BU5V TDF DET SW5V AUD SCL AUD SDA A8V PON 5 PARK SW MUTE PRE PS2-1 PS1-0 PS2-0 PS1-2 PS1-1 PON CD A8V CD MOTOR CD MUTE R VIDEO OUT AUX SW RDS AFS RDS NOISE SW5V SW5V L RST KEY REQ BU5V BLO

13、CK DIAGRAM ELECTRIC UNIT (X25-) RadioFans.CN 收音机爱 好者资料库 4 KDC-MP225,MP4026/G KDC-W4527/G/GY/Y,W427Y SWITCH UNIT (X16-2640-xx/2642-xx/2652-xx) Ref. No.Application / FunctionOperation / Condition / Compatibility IC1LCD driverDrive for LCD unit IC2Remote control ICReceiving for the remote control unit

14、Q1KEY scan detectorkey scan start at base gose “L”. Q2key illumination SWLights up for RED key illumination when base voltage level goes “H” Q3key illumination SWLights up for GREEN key illumination when base voltage level goes “H” ELECTRIC UNIT (X25-9980-xx/9982-xx/X34-3172-70) Ref. No.Application

15、/ FunctionOperation / Condition / Compatibility IC1System microcomputerControl for TUNER unit, CD mechanism, volume & tone, LCD driver and external CD changer unit IC2Electronic volume & N.C.MPXControl for source selector, volume & tone, and FM multiplex detector. Power supply for the units (Bu5V, A

16、udio8V, FM+B, AM+B, P-con and ANT-con) IC3Power supply IC IC4Audio power amp ICAmplifier for audio signal to derive for 4channel speakers (50W maximum for each channel) IC6Muting control ICControl for timing for mute IC7RDS decoderDecode for RDS signal IC8Reset ICWhen detection voltage goes below 3.

17、5V or less Reset IC output change to “L” signal IC9Switching regulatorPower supply for CD mecanism unit Q1Serge detection When backup voltage become more than 24V output is “L” (momentary power down) / When backup voltage become less than 24V output is “H” Q2Backup detection When BU voltage supplied

18、 output is “L” / When BU voltage not supplied or momentary power down is detected output is “H” Q3ACC detectionWhen ACC voltage supplied output is “L” Q4SW 5VWhen base voltage is “L” Q4 is ON Q21,24AVRServo regulator Q22SWServo SW Q23IC controlPower supply IC controller Q41SWSwitching regulator cont

19、rol SW Q101Buffer ampComposite signal buffer Q151DSI driver When base voltage level is “L” DSI LED is light up / When base voltage level is “H” DSI LED turns off / When panel assy is pull off, cut off the supply to panel 5V AVR. Q201Buffer ampNoise buffer amp COMPONENTS DESCRIPTION SW1OUT 1.53.0VAud

20、io ON 3.55.0VAudio P-con ON 7.0VAudio P-con, P-ant ON SW2OUT 2.03.0VIllumination, FM ON 4.0VIllumination, AM ON 5 KDC-MP225,MP4026/G KDC-W4527/G/GY/Y,W427Y Ref. No.Application / FunctionOperation / Condition / Compatibility Q252For surge measure of audio power ICWhen base voltage to “L”, for control

21、 to power IC function (STAND BY) Q350Pre & NF mute SWWhen base voltage to “L”, drive to pre & NF mute SW (Q351) Q351Pre mute SWWhen base voltage to “H”, muting to the pre Lch or NF Lch line Q352Pre mute SWWhen base voltage to “H”, muting to the pre Rch or NF Rch line Q401DSI illumination SWWhen base

22、 voltage to “H”, DSI illumination is light up. CD PLAYER UNIT (X32-5500-00) Ref. No.Application / FunctionOperation / Condition / Compatibility Generation of RF signal based on the signals from the APC circuit and pickup, and generation IC1RF amplifier adapted for CD-RWof servo error (focusing error

23、 and tracking error) signals. Detection of dropout, anti-shock, track crossing and off-track conditions, included gain control function during CD-RW. Focusing, tracking, sled and spindle servo processing. Automatic adjustment (focusing, IC2CD signal processor built-in MI-COMtracking, gain, offset an

24、d balance) operations. Digital signal processing (DSP, PLL, sub-codes, CIRC error correction, audio data Interpol ration) operations, and Microcomputer function. IC3MP3/WMA decoder IC44CH BTL driverFocusing coil, tracking coil, spindle motor and sled motor driver, disc loading and eject operation. I

25、C5AVRFor SW3.3V AVR IC6AVRFor BU3.3V AVR IC7AVRFor BU2.5V AVR IC8SelectorSerial audio signal selector IC IC9AVRFor IC2 (DAC section) 3.3V AVR Q1,37Level shift3.3V 5.0V Q8APCLD power control Q9,10SWDelay to sub beam line (antecedence beam) D2Protection diodeIC2 protection (for reset line) D3Protectio

26、n diodeLaser diode protection COMPONENTS DESCRIPTION 6 KDC-MP225,MP4026/G KDC-W4527/G/GY/Y,W427Y MICROCOMPUTERS TERMINAL DESCRIPTION SYSTEM MICROPROCESSOR : 784225GC231A (X25 : IC1) Pin No.Pin NameI/ODescription / Processing Operation 1TUN SMETERIS meter detection input terminal 2RDS NOISEIFM noise

27、detection input terminal 3LINE MUTEIPhone Muting signal input terminal (More than 2.5V : NAVI mute, Less than 1.0V : TEL mute) 4AVSS-GND 5L RSTOReset signal output (for LCD driver)H : Light on display, key scan, L : Light out on display, key reset 6L CEOCE output for LCD driver IC 7AVREF1-BU5.0V 8L

28、DATALIDATA input terminal from LCD derive IC 9L DATASODATA output terminal to LCD driver IC 10L CLKOCLK output terminal to LCD driver IC 11TDF DETIPanel assy detect terminalH : Panel assy come off 12AUX ONOSelect for AUX input signalH : AUX, L : Other 13RDS QUALIRDS decoder QUAL signal input termina

29、l 14RDS DATAIRDS decoder Data signal input terminal 15PWIC BEEPOBeep audio signal output terminal 16LX DATA SIDATA signal input from EXT. unit 17LX DATA MODATA signal output to EXT. unit 18LX CLKI/OCLK signal input/output to EXT. unit 19TUN SCLOI2C CLK signal output terminal (for front-end) 20TUN SD

30、AI/OI2C DATA signal input/output terminal (for front-end) 21TUN IFC OUTIIFC signal input terminalH : Station detect, L : No detect 22RDS AFSOTime constant select terminal (for noise detect)H : Receiving, L : FM seek, AF search 23CD SDAI/OI2C DATA output terminal (for CD mechanism, electric VR) 24AUD

31、 SDAOCLK output terminal (for CD mechanism, electric VR) 25NC-NC 26LX RSTOReset signal output to EXT. unit 27LX CONOControl signal output to EXT. unit H: ON L: OFF 28LX MUTEIRequest signal input terminal from EXT. unitL : Mute ON 29LX REQ MODATA signal output to EXT. unit 30PWIC SVROSVR control for

32、Audio power IC 31PWIC STBYOSTBY control for Audio power ICH : Power IC ON 32PWIC MUTEOMuting control for Audio power IC 33VSS1-GND 34ACC DETIACC detection input terminalL : ACC detect 35RESET2OReset output terminal L : Active 36MUTEOMuting signal output terminal 37BU DETIBU detect input terminalL :

33、BU detect 38PARK SWIPacking condition detect terminalH : OFF, L : ON (PARKING) 39PS2 1OPower supply IC control terminal 7 KDC-MP225,MP4026/G KDC-W4527/G/GY/Y,W427Y MICROCOMPUTERS TERMINAL DESCRIPTION Pin No.Pin NameI/ODescription / Processing Operation 40PS2 0OPower supply IC control terminal 41PS1

34、0OPower supply IC control terminal 42PS1 1OPower supply IC control terminal 43PS1 2OPower supply IC control terminal 44PON 5OSW5V/SW14V control output terminalHi-Z : OFF, L : ON 45NC-NC 46PON CDOMP3 power supply control terminal 47CD DISC12 SWI12cm CD disc eject SW detection input terminalL : 12cm d

35、isc 48CD MUTE RIRequest for muting signal from CD mechanismL : Mute request 49NC-NC 50CE MRSTOReset signal output to CD mechanismL : Active 51CD DISC8 SWI8cm CD disc eject SW detection input terminal (Not used) 52CD LOS SWILoading start SW detection input terminalL : Loading start 53CD MUTE LIReques

36、t for muting signal from CD mechanismL : Mute request 54NC-NC 55CD MSTOPORequest signal (Mechanism is STOP) output to CD mechanismL : Active 56CD LOE LIM SWIDown SW detection from CD mechanism 57CD LOEJI/OCD mechanism loading / eject control terminalH : Eject, L : Loading 58CD MOTOROCD mechanism mot

37、or loading control terminalH : Loading, Eject, Brake, L : Play 59DSIODisc guide illumination control terminalH : DSI ON 60RESETIReset input terminalL : Active 61NC-NC 62KEY REQIRequest for communication to slave unitL : Key input mode 63RDS CLKIRDS decoder CLK input terminal 64LX REQ SIDATA signal i

38、nput from EXT. unit 65REMOIRemote control signal input terminal 66NC-NC 67VSS0-GND 68VDD1-BU5.0V 69X2-Main clock input terminal (10MHz) 70X1-Main clock input terminal (10MHz) 71TEST-GND 72XT2-Sub clock input terminal (32.768kHz) 73XT1-Sub clock input terminal (32.768kHz) 74VDD0-BU5.0V 75AVDD-BU5.0V

39、7678TYPE02IDestination input terminalDXM6540 (SEL0 : Lo, SEL1 : Lo) 79,80TUN TYPE0,1IElectric volume condition setting terminal 8 KDC-MP225,MP4026/G KDC-W4527/G/GY/Y,W427Y MICROCOMPUTERS TERMINAL DESCRIPTION CD SIGNAL MICROPROCESSOR : UPD63712GC (X32 : IC2) Pin No.Pin NameI/ODescription / Processing

40、 Operation 1VREFLIReference voltage input terminal 2AVSS-GND for ADC 3AVCC-Power supply for ADC (BU3.3V) 4NCONC (OPEN) 520RSTOReset control output terminal (for decoder)L : RESET, H : NORMAL 620ACKIAcknowledge signal input terminal (for decoder) 720STBYOStandby control (for decoder)H : STAND BY, L :

41、 NORMAL 8,9NCONC (OPEN) 1020INTIInterrupt signal input terminal (for decoder) 11FOGUPIInterrupt for focus gain up control signalH : Focus gain UP, L : NORMAL 12LZMI0 bit muting detect (Lch)L : MUTE OFF, H : MUTE ON 13RZMI0 bit muting detect (Rch)L : MUTE OFF, H : MUTE ON 14,15NCONC 1620CSOChip selec

42、t signal output terminal (for decoder) 1720LPOLatch pules signal output terminal (for decoder) 1820TXD0I/OSerial data signal output terminal (for decoder) 1920RXD0ISerial data signal input terminal (for decoder) 2020SCLK0OSerial data clock output terminal (for decoder) 21DSPTXD1OSerial data signal o

43、utput terminal (for DSP) 22DSPRXD1ISerial data signal input terminal (for DSP) 23DSPSCLK1OSerial data clock output terminal (for DSP) 24AM0ISelect for ROM modeH : NORMAL, L : External ROM mode 25DVCC-BU3.3V 26X2OOscillator (16MHz) 27DVSS-GND 28X1IOscillator (16MHz) 29AM1IBU3.3V 30RESETIReset termina

44、lL : RESET, H : NORMAL 31,32NCONC 33,34EMU0,1ONC 35DSPSTBOData strobe signal output terminal 36DSPA0OCommand, parameter select signalH : Parameter, L : Command 37DSPRSTOReset control output terminal (for DSP) 38DSPINTIInterrupt signal input terminal (for DSP)H : Interrupt 39/DAC RESETOReset signal o

45、utput terminal (for DSP)L : RESET, H : NORMAL 40SEARCHOSearch condition output terminalH : Search, L : NORMAL 41LOE/LIM_SWISLT SW detect input terminalH : Inside 4245NCONC (OPEN) 46PONE5O+5V AVR control terminal (for VIDEO)H : Power ON 47PONE2.5O+2.5V AVR control terminal (for VIDEO)H : Power ON 9 K

46、DC-MP225,MP4026/G KDC-W4527/G/GY/Y,W427Y Pin No.Pin NameI/ODescription / Processing Operation 48,49NCONC (OPEN) 50FLAGINIC2 error detect terminalL : Correction OK, H : Correction NG 51-60NCONC (OPEN) 61/DAC PDOReset control output terminal (for DAC)L : RESET, H : NORMAL 62DVSS-GND 63NMIIRequest for

47、non maskable interrupt signal input terminal 64DVCC-+VCC 65DAC MUTEOMuting control output terminal (for DAC)H : MUTE, L : MUTE OFF 66DAC PONOAudio power supply (for DXM-6550)H : POWER ON 67PONA5O+5V Audio power supply (for DXM-6550)H : POWER ON 68ESRSTOReset signal output terminal (for ES3890)L : RE

48、SET, H : NORMAL 69VMUTEOVideo mute control terminalH : MUTE ON, L : MUTE OFF 70NCONC (OPEN) 71SELINTOVideo/Audio select output terminalH : NORMAL, L : Interrupt 72ASEL0OAudio signal output select control terminal 100 : STEREO, 01 : Lch 73ASEL1OAudio signal output select control terminal 110 : Rch, 1

49、1 : Not function 74NT/PALONTSC/PAL select terminalL : NTSC, H : PAL 75DATASELO20F/ES3890 output selectH : 20F, L : ES3890 76,77NCONC (OPEN) 78NC (BOOT)IFlash memory writing terminalL : Writing, H : NORMAL 79,80NCONC (OPEN) 81POND3.3OD3.3V power ON control terminalH : POWER ON 82MUTELOAudio muting control terminal (Lch) 83MUTEROAudio muting control terminal (Rch) 84SDAI/OI2C data (for system microprocessor) 85SCLI/OI2C clock (for system microprocessor) 86MSTOPIInterrupt signal for stand-by modeL : STOP, H : STOP cancellation