Kenwood-KDC-2027-SGY-Service-Manual 电路图 维修手册.pdf

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1、 2003-11 PRINTED IN JAPAN B53-0104-00 (N) 1839 CD RECEIVER KDC-2027SA/SAY/SG/SGY KDC-3027A/AY/G/GY KDC-308A/AY/G/GY KDC-4027/V/VY/Y KDC-F327A/G SERVICE MANUAL CD mechanism extension cord (22PIN) : W05-0618-00 M.RDM EXTERNAL MEDIA CONTROL CLKMENUSCAN AUD RDMREP OFF LOUD TI PTY + - AUTO CLKMENUSCAN AU

2、D RDMREP OFF LOUD TI PTY AUTO CLKADJSCAN AUD RDMREP OFF LOUD AME MONO Escutcheon (B07-3001-02) Plastic cabinet assy (A02-1486-13) Mounting hardware assy (J21-9716-03) DC cord (E30-6132-05) (E30-6286-05) Antenna adaptor (T90-0523-05) Lever (D10-4589-04) x 2 Front glass KDC-4027/V/VY/Y (B10-4459-01) P

3、anel assy KDC-4027/V/VY/Y (A64-3165-02) Front glass KDC-3027A/AY/G/GY (B10-4460-01) KDC-308A/AY/G/GY(B10-4461-01) KDC-F327A/G(B10-4463-01) Panel assy KDC-3027A/AY/G/GY (A64-3166-02) KDC-308A/AY/G/GY(A64-3167-02) KDC-F327A/G(A64-3169-02) Front glass KDC-2027SA/SAY/SG/SGY (B10-4462-01) Panel assy KDC-

4、2027SA/SAY/SG/SGY (A64-3168-02) TDF PANEL INFORMATION MODELPARTS NO.PANEL NAME KDC-2027SA/SAYY33-1960-64 TDF-2027SA KDC-2027SG/SGYY33-1960-65 TDF-2027SG KDC-3027A/AY/G/GY Y33-1960-62 TDF-3027 KDC-308A/AY/G/GYY33-1960-63 TDF-308 KDC-4027/YY33-1960-60 TDF-4027 KDC-4027V/VYY33-1960-61 TDF-4027V KDC-F32

5、7A/GY33-1960-66 TDF-F327 VOL AUTO VOL SCRL RadioFans.CN 收音机爱 好者资料库 2 KDC-2027SA/SAY/SG/SGY, 3027A/AY/G/GY KDC-308A/AY/G/GY, 4027/V/VY/Y, F327A/G BLOCK DIAGRAM S1(LOS SW) S2(12EJE SW) (LOE & LIM SW) S4(8EJE SW) LPF LPF IC1 MECHANISM CONTROL IC S3 5V SW Q2 3.3V AVR IC2 IC3 DSP/DAC IC CD RF/SERVO/ Q3 A

6、PC Q4 SW IC4 4ch BTL DRIVER LD PD C F AB E TR COIL FO COIL M M DM1 DM2 SPINDLE MOTOR LOADING MOTOR & SLED OPTICAL PICKUP DPU1 : BU5V 15 DGND 14 DATA CLK 18 19 MUTER MUTEL 12 13 MSTOP MRST 11 10 LOS SW 20 21 SW 1 8EJE SW 17 A8V 9 Lch 8 AGND 7 DOUT Rch 22 6 4MOTOR LO/EJ 5 SGND S7.5V 3 2 NC 16 12EJE SW

7、 MSTOP DATA MRST MUTEL MUTER CLK PON SERCH LOE&LIM LOE & LIM SW PON INTQ SI AO DSP RESET STB SCK DRV MUTE SO CNTL RST SI SCK STB AO INTQ SO MD+ SD+ TD+ FD+ LZM RZM ROUT LOUT TX X1 4.19MHz Z MUTE L Z MUTE R 16.934MHz X2 A B C D E PRE OUT F LD PD FDIN- BIAS CNT TR+ TR- FO- FO+ SLD+ SLD- SPD- SPD+ TDIN

8、- SPIN- SLIN+ MUTE LO/EJ OPEN OPEN BU5V SW5V SW3.3V S7.5V VREF CD PLAYER UNIT (X32-5490-00) RadioFans.CN 收音机爱 好者资料库 KDC-2027SA/SAY/SG/SGY, 3027A/AY/G/GY KDC-308A/AY/G/GY, 4027/V/VY/Y, F327A/G 3 1200mV 1200mV CD : 3600mV CH : 3600mVAM(E) : 855mV FM(E) : 1372mV FM(J,K) : 1800mV AM(J,K) : 600mV CHANGER

9、 KEY MATRIX WITH LCD DRIVER LCD REMOCON MI-COM CD ANT AM AGC FM AGC DECODER RDS RESET IC EEP-ROM TUNER,MPX & E-VOL. SUPPLY IC SW5V SERVO P-ANT P-CON POWER MUTE LOGIC DET ACC BU DET MUTE PRE POWER IC SP ACC UP BACK OUT OUT PRE IC1 DATA H MUTE DATA C REQ H CH-CON AUDIO OUT CLK REQ C RST BACK UP BU5V I

10、C2 SW5V LO/S RST LOE/LIM MO LO/EJ STOP MUTE 8EJE SDA SCLK AUDIO OUT 12EJE Q501 Q502 AM+B FM+B AM AGC OUT IC6 CH CD SERVO BU5V A8V TUNER OUT BU5V IC11 IC12 IC10 FM AGC OUT A8V SW2 SW1 ILLUMI VCC BU5V AUDIO+B AM+B FM+B BACK LIGHT KEY ILLUMI Q51,55 SW5V Q50 SERVO BU5V FM+B AM+B A8V P-CON P-ANT IC8 Q20

11、Q10 IC7 MUTE Q223,224 IC4 ELECTRIC UNIT (X34- ) SWITCH UNIT (X16- ) BLOCK DIAGRAM RadioFans.CN 收音机爱 好者资料库 4 KDC-2027SA/SAY/SG/SGY, 3027A/AY/G/GY KDC-308A/AY/G/GY, 4027/V/VY/Y, F327A/G COMPONENTS DESCRIPTION SWITCH UNIT (X16-2462-7x/2472-7x) Ref No.Application/FunctionsOperation/Condition/Compatibili

12、ty IC1LCD driverLCD derive & Key input interface IC2SensorRemote control sensor Q1Key scan detectkey scan start at base gose “L”. Q2LED SWWhen Q2 base gose “H” LED is light on RED Color Q3LED SWWhen Q2 base gose “H” LED is light on GREEN Color CD PLAYER UNIT (X32-5490-00) Ref No.Application/Function

13、sOperation/Condition/Compatibility IC1Mechanism controlWhen BU5V & MSTOP (12pin) goes “H” (IC1 is active) IC2SW3.3V AVRWhen CNTL (1pin) goes “H” (SW3.3V AVR : ON) IC3CD DSP & servo ICCD RF amp, Servo, DSP & DAC IC4BTL driverFocus, tracking coil, Sled & Spindle motor driver IC Q2SWSW5V SW transistor

14、Q3APCAuto Power Control Q4SWEQ SW transistor ELECTRIC UNIT (X34-3102-7x) Ref No.Application/FunctionsOperation/Condition/Compatibility IC1System control ICSystem control microprocessor IC4Audio power ICAudio power amplifier IC6RDS decoderRDS decoder IC IC7Power supply ICMulti AVR IC (for 5V, 8V, P-C

15、ON & P-ANT) IC8Muting logic ICControl for MUTE, P-ANT & RESET muting IC10E-VOL & tuner ICE-VOL. FM/AM tuner & stereo decoder IC11Reset ICWhen BU5V line voltage is less than 3.5V, this IC output line is “L” IC12E2PROMMemorized tuner adjustment data (save & load) Q10BU detectorWhen the base goes “H” d

16、uring BU applied (ON) Q20ACC detectorWhen the base goes “H” during ACC applied (ON) Q40Muting driver foe Q223, 224When the base goes “L” (Muting : ON) Q50SW5VWhen the base goes “L” (SW5V : ON) Q51SWControl SW for IC7 Q55SERVO +B AVRServo AVR (7.4V) Q70Serge detectorWhen the base goes “H” (Serge dete

17、ction) Q101DSI illumination SWWhen the base goes “L” (DSI illumination : ON) Q102Panel 5V SWWhen the base goes “L” (Panel 5V : ON) Q201Noise bufferTuner audio noise buffer amplifier Q223,224Preout muting SWWhen the base goes “H” (Preout muting : ON) Q251SWWhen the base goes “L” (IC4 : ON) Q252Smeter

18、 RC & MPTHTC SWRC & TC is “LONG” when the base is “H” (base is “L” is AF search) Q253Smeter RC & MPTHTC SWWhen collector is “H”, emitter is “H” Q501AM RF amplifierWhen the base goes “H” (RF circuit gain is up) Q502FM RF amplifierWhen the base goes “H” (RF circuit gain is up) Q503MPX bufferMPX input

19、buffer with RDS KDC-2027SA/SAY/SG/SGY, 3027A/AY/G/GY KDC-308A/AY/G/GY, 4027/V/VY/Y, F327A/G 5 MICROCOMPUTERS TERMINAL DESCRIPTION SYSTEM MICROCOMPUTER : UPD780058GC55x (X34 : IC1) Pin No.NameI/ODescriptionProcessing Operation 1PANELIPanel detectionH : Panel detached, L : Panel attached 28EJE SWI H :

20、 Eject is completed Except 8cm CD model : Always output L 3NCONot used (out put L) 4Avss H : Panel detached, L : RESET 5L-RSTOLCD driver RESETNormal H, Power off L When 7seg model, output L 6L-CEOLCD driver selection H : Select (panel communication) When panel attached, output L 7AVREF1 8NCNot used

21、(connected to 9pin) 9IC10-DATAI/OIC10, E2PROM data communicationNon communication : H 10IC10-CLKOIC10, E2PROM clock communicationNon communication : H Non communication : H 11L-DATALIData input from the LCD driverWhen panel detached : L Pull down on X34 unit, Pull up on X16 unit 12L-DATASOData outpu

22、t to the LCD driverWhen panel detached, output L 13L-CLKOClock output to the LCD driverWhen panel detached, output L 14R-DATAIData input from the RDSExcept RDS model : Output L 15R-QUALIQuality input from the RDSExcept RDS model : Output L 16CH-DATACIData input from the changer (new 5L)Except change

23、r model : Output L 17CH-DATAHOData output to the changer (new 5L) When non communication, last data keeping Except changer model : Output L 18CH-CLKI/OClock input/output with the Changer (new 5L) Check the old and new Except changer model : Output L 19CH-REQHORequest output to the changer (new 5L) L

24、 : Requset Except changer model : Output L 20NCONot used (output L) 21AFSONoise detection time constant switching terminal H : Normal, L : FM/AM seek and AF search (When tuner SRC auto zero, L) 2224NCONot used (output L) 25CH-CONTOChanger control H : Changer on, L : Changer off Except changer model

25、: Output L 26TYPE REFO5V lines output for destination settingH : During destination reading 27SDITuner SD inputH : Station detected 28NCONot used (output L) 29TYPE2IDestination type selection terminal 2Refer to destination type list. 30TYPE1IDestination type selection terminal 1Refer to destination

26、type list. 6 KDC-2027SA/SAY/SG/SGY, 3027A/AY/G/GY KDC-308A/AY/G/GY, 4027/V/VY/Y, F327A/G Pin No.NameI/ODescriptionProcessing Operation 31TYPE0IDestination type selection terminal 0Refer to destination type list. 32TUNER-TYPE1IDestination available/genuine model rool offH : Genuine model 1, L : Avail

27、able model 33Vss1 34TUNER-TYPE0IDestination available/genuine model noise cancelH : Genuine model 0, L : Available model 35MUTEOMute (E.Vol, Preset) control H : Mute on, L : Mute off Power off after that 15 second L 36M-DATAI/OData input/output with the CD mechanismNon communication : H 37M-CLKOCloc

28、k output to the CD mechanismNon communication : H When adjustment = H 38ADJOTuner lines adjustmentPS1-0, 1=L PS1-2, 2-0, 1=Hi-z IC10-DATA, CLK=Hi-z 39P-MUTEOPower IC mute control H : Mute off, L : Mute on Power off after that 15 second H 40SVROPower IC servo control H : When momentary power down det

29、ected L : Nomal 41P-STBYOPower IC standby controlH : Power IC ON, L : Power IC OFF 42SW5VOSW 5V control H : SW5V OFF, L : SW5V ON Power off after that 10 second H 43B.U-DETIBack up detection terminalH : Power down, L : B.U. on 44ACC-DETIACC detection terminalH : ACC OFF, L : ACC ON Power supply IC S

30、W1 control 0 45PS1-0O Audio 8V, P-CON Power supply IC SW1 control 1 46PS1-1O Audio 8V, P-CON 47PS1-2OPower supply IC SW1 control 2 P-ANT Power supply IC SW2 control 0 48PS2-0O ILLUMI, FM, AM Power supply IC SW2 control 1 49PS2-1O ILLUMI, FM, AM 50BEEPBEEP H : Light on, L : Light off 51DSIODSI contro

31、l When panel attached, output L When panel detached, flashing at the panel (H/L) FIX model is output L 52NCONot used (out put L) 53NCONot used (out put L) MICROCOMPUTERS TERMINAL DESCRIPTION BA4911 SW1Power supply IC output PS1-2 PS1-1 PS1-0A8VP-CON P-ANT LLLSTANDBY LL (H)H (L)ONOFFOFF LHHONONOFF HH

32、HONONON BA4911 SW2Power supply IC output PS2-1 PS2-0 ILLUMIFMAM LLSTANDBY L (H)H (L)ONONOFF HHONOFFON KDC-2027SA/SAY/SG/SGY, 3027A/AY/G/GY KDC-308A/AY/G/GY, 4027/V/VY/Y, F327A/G 7 Pin No.NameI/ODescriptionProcessing Operation 54LOE/LIM SWICD mechanism down&limit detectionH : Chucking detection, L :

33、Normal 55MO SWOCD mechanism loading motor control outputH : Loading, Eject, Break, L : Play 56LO/EJI/OCD mechanism loading/Eject switching terminalH : Eject, L : Loading 57M-STOPOStop output to the CD mechanismH : Play, L : Stop 58M-RSTOReset output to the CD mechanismH : Normal, L : CD mechanism re

34、set 59M-MUTEIMute input from the CD mechanismH : Mute off, L : Mute on 60RESETReset input from the System microcomputer 61REMOIRemote control input 62R-CLKIRDS clock inputExcept RDS model : Output L H : Changer detection 63CH-REQCIRequest input from the changer (new 5L)L : Request Except Changer mod

35、el : Output L 64LOS SWICD mechanism loadings switch detected H : No disc L : Disk in (Loading Start) 65KEY-REQI Key input detectedH : Key no input (11pin L connected to the DATA L)L : Key input (edge key data reading start) 6612EJE SWI12cm disc detectedL : 12cm disc 67Vss0 68VDD1 69X2MAIN Xtal oscil

36、lating circuit4.19MHz Xtal connection 70X1MAIN Xtal oscillating circuit4.19MHz Xtal connection 71ICTEST 72XT2Not usedOPEN 73XT1 74VDD0VDDConnected to VDD 75AVREF0 A/D converter reference voltage control output, connection to the 80pin AVCONT 76S-METERIS-meter input 77NOISEIFM noise detection input 2

37、.5V or greater : NAVI MUTE 78PHONEI2 way mute1.0V or less : TEL MUTE Except phone mute model : Output L 79NCONot used (out put L) 80AVCONTOA/D converter standard voltage control output H : During A/D converter active same timing with PON MICROCOMPUTERS TERMINAL DESCRIPTION 8 KDC-2027SA/SAY/SG/SGY, 3

38、027A/AY/G/GY KDC-308A/AY/G/GY, 4027/V/VY/Y, F327A/G CD MECHANISM CONTROL IC : 789166YGB-A513 (X32 : IC1) Pin No.NameI/ODescriptionProcessing Operation 16NCINCGND 7ZMUTE_LI0 bit MUTE detect (Lch) Less than 54h : NORMAL, More than 54h : ZMUTE detect 8ZMUTE_RI0 bit MUTE detect (Rch) Less than 54h : NOR

39、MAL, More than 54h : ZMUTE detect 9AVss-DGND 10/MUTE_LOLch Audio mute controlL : MUTE ON, H : MUTE OFF 11/MUTE_RORch Audio mute controlL : MUTE ON, H : MUTE OFF 12/MSTOPIInterruption for stand-byL : STOP, H : Release for STOP mode 13INTQIInterruption for DSP ICH : Interruption 14/FOGUPIInterruption

40、for focus gain upL : Fo GAIN UP, H : NORMAL 15PONOPower ON/OFF controlH : ON, L : OFF 16/SCKO(for DSP) serial data clock output 17Vdd1-BU5V 18SOO(for DSP) serial data output 19SII(for DSP) serial data input 20/CLKI/O(for system control) I2C clock 21DATAI/O(for system control) I2C data 22Vpp-(FLASH s

41、aving terminal) 23XT2-NCOPEN 24XT1INCGND 25/MRESETIReset detectL : RESET, H : NORMAL 26X2-System clock4.19MHz 27X1ISystem clock4.19MHz 28Vss0-DGND 29Vdd0-BU5V 30LOE&LIM_SWILoading end & limit SW detectL : Inside detect, H : Outside 31DRV_MUTEODriver mutingL : MUTE ON, H : MUTE OFF 32,33NCONCOPEN 34/

42、SERCHOCondition of serch stateL : Search, H : NORMAL 35/STBOData strobe signal output 36A0OCommand & parameter signal output 37Vss1-DGND 38/DSP_RESETODSP reset controlL : RESET, H : NORMAL 3941NCONCOPEN 42/PONOPower ON/OFF controlL : ON, H : OFF 43Avdd-BU5V 44Avref-BU5V MICROCOMPUTERS TERMINAL DESCR

43、IPTION KDC-2027SA/SAY/SG/SGY, 3027A/AY/G/GY KDC-308A/AY/G/GY, 4027/V/VY/Y, F327A/G 9 TEST MODE 1. How to enter test mode While holding the FM key and preset 6 key and reset the unit. All display segments light up when the test mode is entered. 2. How to exit from test mode Reset the unit. Turning AC

44、C off, power off, momentary power down or panel detaching does not terminate the test mode. 3. Test mode specifications of CD receiver Pressing the Track Up key skip to tracks in the following se- quence: No.9 No.15 No.10 No.11 No.12 No.13 No.14 No.9 (repeats the cycle) Pressing the Track Down key s

45、kip to the track immediately before the track being played. Pressing Preset 1 key skip to track No. 28. Forced ejection is not provided. 4. Audio functions Pressing the AUDIO key or the “*” key on the remote con- troller initiates the Audio adjustment mode. In the Audio adjustment mode, the Seek Up/

46、Down keys on the remote controller can only be pressed shortly. (They can- not be held depressed.) The volume is -10dB (which is displayed as “30”). LOUDNESS is OFF. The Bass/Treble Up/Down and Balance/Fader Up/Down buttons function as full-boost/full-cut and full-front/full-rear respectively. 5. Me

47、nu mode (for 14segment model) Pressing the CLK or the DNPP key on the remote controller initiates the Menu mode. In the Menu mode, the Seek Up/Down keys on the remote controller can only be pressed shortly. (They cannot be held depressed.) With the models incorporating RDS, the first operation in th

48、e menu becomes local seek. 6. Version and operating hours display The following table shows the key operations and resulting display information. Key OperationDisplay Pressing Preset 1Version (Date and time display) Pressing Preset 2All display segments light up Pressing Preset 3CD operating hours P

49、ressing Preset 4E2PROM (Adjustment data for IC10) Pressing Preset 5CD ejection count Pressing Preset 6Number of times adjustment for IC10 Holding Preset 3 while the operating hour information is dis- played clears it. Holding Preset 5 while the ejection count information is dis- played clears it. Adjustment Mode Adjustable items 1 : Stereo DecoderSub address : 9 2 : ConfigurationSub address : D 3 : Stereo decoder AdjustmentSub address : E 4 : Hi-CutSub address : C 5 : Field strength controlSub address : B Default values If they are not written in the EE