Kenwood-KDC-202-MR-Service-Manual 电路图 维修手册.pdf

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1、 2002-11 PRINTED IN JAPAN B53-0003-00 (N)1724 COMPACT DIGITAL AUDIO RDMLOUDREPSCAN OFF KDC-XXXX CRSC AMEAUTOADJCLK AUD 50Wx4 Panel assy (A64-2864-02): KDC-2022V (A64-2865-02): KDC-2022 Escutcheon (B07-3022-02): KDC-4023 Escutcheon (B07-3022-02): KDC-202MR (B07-3060-02): KDC-2022/V (A64-2871-02): KDC

2、-4023 CD MD-Changer Control M. RDM M. RDM COMPACT RDMLOUDREPSCAN OFF KDC-202MR CRSC AMEAUTOADJCLK AUD 45Wx4 Panel assy (A64-2866-02): KDC-202MR DC cord (E30-4784-05) CD MD-Changer Control DIGITAL AUDIO Depends on model. Refer to the parts list Lever (D10-4589-04)x2 Mounting hardware assy (J21-9716-0

3、3) Plastic cabinet assy (A02-1486-13) Remote controller assy (A70-2025-05) Screw set (N99-1719-05) Screw set (N99-1610-15) CD RECEIVER KDC-2022/V KDC-202MR KDC-4023 SERVICE MANUAL CD mechanism operation description is not in this sarvice manual. Please, refer to sarvice manual X92-4030-0 x (B51-7867

4、-00). CD mechanism extension cord : W05-0618-00 RadioFans.CN 收音机爱 好者资料库 KDC-2022/V/202MR/4023 2 BLOCK DIAGRAM 1200mV 1200mV CD : 3600mV CH : 3600mVAM(E) : 855mV FM(E) : 1372mV FM(J,K) : 1800mV AM(J,K) : 600mV CHANGER KEY MATRIX WITH LCD DRIVER LCD REMOCON MI-COM CD ANT AM AGC FM AGC DECODER RDS RESE

5、T 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 IC2 SW5V LO/S RST LOE/LIM MO LO/EJ STOP MUTE 8EJE SDA SCLK AUDIO OUT 12EJE Q501 Q502

6、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 Q10 IC7 MUTE Q223,224 IC4 RadioFans.CN 收音机爱 好者资料库 KDC-2022/V/202MR/4023 3 G SWITCH U

7、NIT (X16-1460-1x/2370-10) COMPONENTS DESCRIPTION Ref.No.Application/FunctionsOperation/Condition/Compatibility IC1LCD driver & key matrix IC2Remote Sencer Q1Key scan startWhen Q1 base goes Lo, key scan start. G DAUGHTER UNIT (X89-2590-10) Ref.No.Application/FunctionsOperation/Condition/Compatibility

8、 Q221, 222Audio mute SWAudio preout is muted when the bose goes H. Q225Audio mute driverMute driver for audio mute SW. G ELECTRIC UNIT (X25-9600-xx) Ref.No.Application/FunctionsOperation/Condition/Compatibility IC1System control -comSystem -com IC4Power amplifire E-Vol output encoder power amplifica

9、tion for speaker. IC7Power supply (Multi AVR)- When a pin 1, 2, or 13 is H, MUTE turns on IC8MUTE LogicWhen a pin 3, 4, or 5 is H, P-AMP mute turns ON. Changer is RESET when a pin 9, 10, or 11 is L. IC10Tuner & E-Vol.FM/AM tuner & stereo decoder & E-Vol. IC11Power on resetWhen B.U. 5V voltage is les

10、s than 3.5V, power reset. IC12E2P-ROMWriting and read-out of adjustment data for a tuner Q10B.U. detectorBU on (base H) : Collector H Q20A.C.C detectorACC ON (bace : H) : Collector L Q40MUTE driverBase L : Mute on (collector L) Q50SW 5VBase L : SW5V on Q51SERBO AVR controlPin 2 H : Serbo on (pin 4 H

11、) Q55SERBO AVRBase H : Serbo on Q70Surge detectorBase H : Surge detect Q101DSI driverBase H : DSI on Q102PANEL 5V SWPanel attch : PAN5V on Q223,224MUTEBase H : Mute on Q501AM RF amplifireBase H : Gain UP Q502FM RF amplifireGate H : Gain UP RadioFans.CN 收音机爱 好者资料库 KDC-2022/V/202MR/4023 4 MICROCOMPUTE

12、RS TERMINAL DESCRIPTION G SYSTEM MICROCOMPUTER uPD780058GC499 (X25 : IC1) Pin No.NameI/ODescriptionProcessing Operation 1TDF DETIPanel detectionH:Panel detached L:Panel attached 28EJE SWI H:Eject is completed Except 8cm CD model:always output L 3NCONot used (out put L) 4Avss H:Panel detached L:RESET

13、 5L-RSTOLCD driver RESET3 normal 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 (connected to 9pin) 9IC10-DATAI/OIC10,E2PROM data communication3 non communication : H 10IC10-CLKOIC10,E2PROM clock com

14、munication3 non communication : H Non communication : H 11L-DATALIData input from the LCD driverWhen panel detached : L 3 Pull down on X25 unit,Pull up on X16 unit 12L-DATASOData output to the LCD driverWhen panel detached , output L 13L-CLKOClock output to the LCD driverWhen panel detached , output

15、 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 changer model : output L 17CH-DATAHOData output to the changer (new 5L) When non communication ,last data keeping Except

16、 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:Requset Except changer model : output L 20NCONot used (output L) 21AFSONoise detection time constant switching te

17、rminal H:Normal L:FM/AM seek and AF search 3 (When tuner SRC auto zero , L) 22-24NCONot used (output L) 25CH-CONTOChanger control H:Changer on L:Changer off Except changer model : output L 26TYPE REFO5V lines output for destination settingH:During destination reading 27SDITuner SD inputH:Station det

18、ected 28NCONot used (output L) 29TYPE2IDestination type selection terminal 2Refer to destination type list. 30TYPE1IDestination type selection terminal 1Refer to destination type list. 31TYPE0IDestination type selection terminal 0Refer to destination type list. 32TUNER-TYPE1IDestination available/ge

19、nuine model rool offH:genuine model 1 L:available 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 mechanism

20、3 non communication : H 37M-CLKOClock output to the CD mechanism3 non 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:Wh

21、en momentary power down detected L:Nomal 41P-STBYOPower IC standby controlH:Power IC ON L:Power IC OFF 42SW5VO SW 5V controlH:SW5V OFF L:SW5V ON Power off after that 10 second H KDC-2022/V/202MR/4023 5 MICROCOMPUTERS TERMINAL DESCRIPTION Pin No.NameI/ODescriptionProcessing Operation 43B.U-DETIBack u

22、p detection terminalH:power down L:B.U. on 44ACC-DETIACC detection terminalH:ACC OFF L:ACC ON 45PS1-0O Power supply IC SW1 control 0 Audio 8V,P-CON 46PS1-1O Power supply IC SW1 control 1 Audio 8V,P-CON 47PS1-2OPower supply IC SW1 control 2 P-ANT Power supply IC SW2 control 0 48PS2-0O ILL,FM,AM Power

23、 supply IC SW2 control 1 49PS2-1O ILL,FM,AM 50BEEPBEEP H:Light on L:Light off 51DSIODSI control 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) 54LOE/LIM SWICD mechanism down&limit detectionH:Chuck

24、ing detection L: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 reset 59

25、M-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 model : output L 6

26、4LOS 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 69X23 MAIN Xtal oscillating circuit3 4.19MHz

27、Xtal connection 70X13 MAIN Xtal oscillating circuit3 4.19MHz Xtal connection 71ICTEST 72XT2Not used OPEN 73XT1 74VDD0VDDConnected to VDD 75AVREF0 A/D converter reference voltage control output, connection to the 80pin AVCONT 76S-METERIS-meter input 77NOISEIFM noise detection input3 2.5V or greater:N

28、AVI MUTE 78PHONEI2way 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 BA4911 SW1Power supply IC output PS1-2PS1-1PS1-0A8VP-CONP-ANT LLLSTANBY LL(H)H(L)ONOF

29、FOFF LHHONONOFF HHHONONON BA4911 SW2Power supply IC output PS2-1PS2-0ILLUMIFMAM LLSTANBY L(H)H(L)ONONOFF HHONOFFON KDC-2022/V/202MR/4023 6 MICROCOMPUTERS TERMINAL DESCRIPTION G MECHANISM MICROCOMPUTER MN6627771KP (X32 : IC2) Pin No.NameI/ODescriptionProcessing Operation 1TVDOTraverse driver output (

30、PWM output) 2SPLOSpindle motor drive output (PWM output) 3PCOSpindle motor ON outputL:ON H:OFF (default ) 4PWMOmulti-purpose PWM outputIts possible to setup the TOSF2 5TBALOTracking balance adjust output (PWM output) 6FBALOFocus balance adjust output (PWM output) 7NRFDETIRF detection signal input L:

31、detected 8OFTIOff-track signal input H:detected 9BDOIDrop out signal input H:detected 10LDONOLaser on signal output H:ONWhen command FO on,LDON is H 11DSLBODSL balance output 12DVDD1-Power supply for digital circuit 13DVSS1-Ground lines for digital circuit 14AVSS2-Ground lines for analog circuitFor

32、DSL,PLL and AD 15DSLFI/OLoop filter terminal for DSLThe bias of ARF output terminal in one 16ARFIRF signal input 17RFSWIWhen DSL circuit,constant switch terminal 18PLLFI/OLoop filter terminal for PLL 19PLLF2I/OLoop filter characteristic switching terminal for PLL 20IREFIStandard voltage input termin

33、al 21RFENVIRF envelope signal inputAnalog input 22TRCRSITrack cross signal inputAnalog input 23TEITracking error signal inputAnalog input 24FEIFocusing error signal inputAnalog input 25AVDD2-Power supply for analog circuitFor DSL,PLL and AD 26AVSS1-Ground lines for analog circuitFor audio output (Lc

34、h and Rch in one) 27OUTRORch audio output 28AVDD1-Power supply for analog circuitFor audio output (Lch and Rch in one) 29OUTLOLch audio output 30DVSS3-Ground lines for digital circuit 31CSELIOscillation frequency specification terminalH:33.8488MHz L:16.9344MHz 32NCONot used 33ASELIAudio output polar

35、ity switching terminalL:Reverse H:Non reverse 34MSEL0IDestination type selection port (set 2bit)Order MSEL 0 and MSEL 1 Set up 35MSEL1IDestination type selection port (set 2bit)Order MSEL 0 and MSEL 1 Set up 36ICRSTOReset control terminal for external DAC 37BCLKOBit clock output for serial data 38LR

36、CKOL/R identification signal output 39SRDATAOSirial data output 40VREFPIA/D converter standard power supply input 41HOTITemperature protection detection terminal (AD input)Over C5(h):on 428EJE_SWI8cm disc eject stop detection terminalH:Stop 4312EJE/SDET_SWIJudge the 8cm or 12cm disc12cm disc stop de

37、tection terminal 44LOE/LIM_SWIPick-up inside detectedLoading end detection terminal 45PCKOPLL extracted clock output,etc 46EFMOEFM signal output,etc 47SENSEOOptics servo status signal output,etc 48CLVSOSpindle servo phase synchronous signal output,etcL:Normal operation H:Luff servo 49DEMPHODephase d

38、etection signal output,etcH:on 50DVDD2-Power supply for digital circuit 51X1IMain clock input terminal KDC-2022/V/202MR/4023 7 MICROCOMPUTERS TERMINAL DESCRIPTION Pin No.NameI/ODescriptionProcessing Operation 52X2OMain clock output terminal 53DVSS2-Ground lines for digital circuit 54XSUB1IWhen exter

39、nal DAC,external clock input terminal 55XSUB2O 56TEST1ITest port 1Normal operation is H fixed 57TEST2ITest port 2Normal operation is H fixed 58NCONot used 59VER/HOROPut length or breadth switching motor terminalH:Put length L:Put breadth 60DRV_MUTE ODriver mute control terminalL:MUTE ON H:MUTE OFF 6

40、1/MUTE_LOAudio Lch MUTE outputL:MUTE 62/MUTE_ROAudio Rch MUTE outputL:MUTE 63/RSTILSI reset input terminalH:Normal L:Reset 64OCD_CLKIWhen OCD connected, clock input 65/MSTOPIStandby detection terminalH:Normal L:Mecha stop 66DATAI/OI2C bus data line (communication line with system computer)At that ti

41、me serial writer connected 67SBIOIWhen connected to serial writer,data input terminal 68/CLKI/OI2C bus clock line (communication line with system computer)At that time serial writer connected 69TXODigital audio interface signal output 70EQCNTORF EQ switching terminalL:x2 times H:x1 times 71XSELIDuri

42、ng the external DAC connectionMCLK external input (H:input) 72MCNTICD mecha Loading/Eject control ON/OFFL:OFF (HOST control) H:mechanism control 73P-ONOAudio and servo origin power control terminalL:power on H:power off 74MOTOROLoading/Eject control switching terminalAt that time LO/EJ is H 75LO/EJO

43、Loading/Eject control terminal or output LWhen 72pin (P82) is L,output L 76CD-RWOCD-RW control terminalH:CD-RW L:normal 77LDCNTOLD control terminalOperation is same LDON as timing 78DVDD3-Power supply for digital circuit 79FODOFocus driver output (PWM output) 80TRDOTracking driver output (PWM output

44、) TYPE2TYPE1TYPE0MODEL NAME LLLKDC-2024SA/SYA, 2024SG/SYG uPD780058GC499 LLHKDC-2022, 2022V,202MR LHLRY-391CD, RX-491CD LHHKDC-4023, 2023, 3023 LLHKDC-122, 122S uPD780058GC501LHHKDC-1023, 1023S HLHKDC-222, 222S LLLKDC-3024G/YG, 307G/YG uPD780058GC502 LHHKDC-3023R HLLKDC-3024A/YA, 307A/YA HLHKDC-4024

45、/Y/V/YV uPD780058GC503LLLKDC-2094YA/YG H:R135R137R139 L:R136R138R140 System mi-com Destination type list KDC-2022/V/202MR/4023 8 ADJUSTMENT 1. IC10 (TDA7513) -The Tuner adjustment method When IC10 and its circumference are fixed, according to the following order, it readjusts if needed. The adjustme

46、nt item changes with parts to exchange. Please refer to Parts vs Adjustment item table. 1-1. VCO Coil Adjustment - Adjustment of Tunning Voltage Voltage Check Point: Vt-Check Land (PWB Side_B, around D506) Adjustment Coil: L507 (VCO Coil) The adjustment method: VCO coil is turned and adjusted accord

47、ing to the following tables. M : AM Adjustment For Your Information : The frequency of SET is only set up by Pre-Set-Key in case this adjustment xThe appearance and the coil with which S-METER DC voltage serves as the maximum are turned and adjusted in the above-mentioned SG input. By the above-ment

48、ioned adjustment method, same adjustment is performed to both sides (1st&2nd MIX Coil). TYPEModefreq.VoltageFig E/MAM1611kHz5.5 0.1(V)(C) KAM1700kHz5.8 0.1(V)(C) JFM90.0MHz5.6 0.1(V)(C) W(Wide Band)FM108.0MHz7.2 0.1(V)(C) 1-2. Adjustment of 1st & 2nd-MIX Coil Voltage Check Point: S_METER-Check Land

49、(PWB Side_B, around W572) Adjustment Coil: 1stIFT = L508 / 2ndIFT = L509 Setting of Signal Generator : Refer to the following tables TYPEMODEfreq.Mod.ANT InputFig KAM1000kHzOFF35dBuEMF(B),(C) E,M,J,WAM999kHzOFF35dBuEMF(B),(C) xThe appearance and the coil with which S-METER DC voltage serves as the maximum are turned and adjusted in the above-mentioned SG input. By the above-mentioned adjustment method, same adjustment is performed to both sides (ANT&RF Coil). 1-3. Adjustment of FM_ANT&RF Coil Voltage Check Point: S_METER-Check Land (PWB Side_B, ar