Kenwood-RXDM-51-MD-Service-Manual电路原理图.pdf
(HM-531/581MD)MICRO HiFi COMPONENT SYSTEMRXD-M51/M51MDSERVICE MANUAL©1998-9/B51-5477-00 (K/K) 2138 Refer to DM-3090 service manual(B51-5396-00), ifrequire the following items in detail.1) MD mechanism(MDM-98A) disassembly for repair(page5,6)2) Semiconductor descriptionIC1101:RF signal control(page9)IC1201:ENDEC/ATRAC(page10,11)IC1401:system microcomputer(page 12,13)Caution :No connection of ground line if disassemble theunit.Please connect the ground line on rear panel,PCBs, Chassis and some others.KENWOOD-Crop. certifies this equipment conforms to DHHSRegulations No. 21 DFR 1040. 10, Chapter 1, Subchapter J.DANGER : Laser radiation when open and interlock defeated.AVOID DIRECT EXPOSURE TO BEAMIllustration is RXD-M51MD.* Refer to parts list on page 49.MD6TUNERmicro hi-fi component systemAuto ReverseAUXpushOPENMD recDISC LOADING MECHANISMTAPE/presetband 1BIT DUAL D/A CONVERTERTAPE recremoteTAPEdirectionset/demomenu repeat soundstandby/timeron/standby3downup2VOLUME/multicontrolphonesCD 6741¢0023Panel(A60-1496-11)Indicator(B12-0351-03) Knob(K29-6358-14)Knob(K29-7394-03)Front glass(B10-3419-14)Miniature phone jack(E11-0344-05)Front glass(B10-3418-03)Dressing panel(A21-3707-03)Dressing panel(A21-3721-03) Knob(K29-7392-02)Panel (MD)(A29-1022-04)Knob(K29-7393-03)RXD-M51MD(K) COVER1,1P( 98.12.10 19:11 yW2SYSTEMMAIN UNITDESTINATIONSPEAKERSPCORD PARTS.NO.HM-581MDRXD-M51MDE1T1LS-M61E30-5500-05HM-531RXD-M51M1E2T2LS-M51E30-5500-05Operation to resetThe microcomputer may fall into malfunction (impossibil-ity to operate, erroneous display, etc.) when the powercord is unplugged while unit is ON or due to an externalfactor. In this case, execute the following procedure toreset the microcomputer and return it to normal condi-tion.Unplug the power cord from the power outlet then, whileholding the “set/demo”key depressed, plug the powercord again.CRPlease note that resetting the microcomputer clears thecontents stored in and it returns to condition when it leftthe factory.set/demoBatteries (R6/AA) (2)Other countriesRemote control unit (1)AM loop antenna stand (1)Speaker cords (2)Loop antenna (1) (T90-0833-05)Please confirm that the following accessories are present.FM indoor antenna (1)Europe U.K. and RussiaAC plug adapter (1)Use to adapt the plug on the powercord to the shape of the wall outlet.(Accessory only for regions whereuse is necessary.(T90-0810-05): TE(E03-0115-05)(E30-5500-05)(A70-1236-05) : RC-M0503ERemote control unit (1)(A70-1242-05) : RC-F0503ERemote control unit (1)(A70-1241-05) : RC-F0503(T90-0801-05): M(J19-3645-05)¢REMOTE CONTROL UNITRC-F0503ESLEEP TONE SOUND1 2 3 TIMER4 5 6 REPEAT7 8 9 RANDOM+10 0 PGM CLEARDOT DISP.TIME DISP.TAPEP.CALLTAPE TUNERBANDCDPTYTA/NEWS AUXSET ENTER MUTE42 3 7%61POWERVOLUMEO.T.E.TRACKEDITTITLEINPUTTITLESEARCHTIMERRANDOMCLEARDELETEREPEAT6CD6TUNERBANDSETDOT/CHARA.TIME ENTERSLEEP1 2 34 5 67 8 9+10 0 DOLBY NRQUICKMOVETAPEPTYTA/NEWS AUX¢P.CALL42 3PGM1REMOTE CONTROL UNITRC-M0503ESOUNDTONEMDTAPEMD7%MUTEVOLUMECONT RO LDISPLAYO.T.E.POWER¢REMOTE CONTROL UNITRC-F0503SLEEP TONE SOUND1 2 3 TIMER4 5 6 REPEAT7 8 9 RANDOM+10 0 PGM CLEARDOT DISP.TIME DISP.TAPEP.CALLTAPE TUNERBANDCDAUXSET ENTER MUTE42 3 7%61POWERVOLUMEO.T.E.RXD-M51/M51MD2CONTENTS / ACCESSORIES / CAUTIONCONTENTS / ACCESSORIES / CAUTION.2EXTERNAL VIEW/DISASSEMBLY FOR REPAIR.3BLOCK DIAGRAM.4CIRCUIT DESCRIPTION.5ADJUSTMENT.11WIRING DIAGRAM.12PC BOARD.13SCHEMATIC DIAGRAM.23EXPLODED VIEW.45PARTS LIST.49SPECIFICATIONS.59AccessoriesCaution System configurationContentsRXD-M51MD(K) COVER1,1P( 98.12.10 19:11 yW3123Phono jack(E63-1024-05)Lock terminal board(E70-0053-05)Power cord bushing(J42-0083-05)AC power cord *(E30-)Lock terminal board(E70-0052-05)RXD-M51/M51MD3EXTERNAL VIEW / DISASSEMBLY FOR REPAIRDISASSEMBLY FOR REPAIRIllustration is RXD-M51MD.* Refer to parts list on page 49.See the left figure, connect the SP terminal GND and the rearpanel (1), the front panel GND and the rear panel (2), MDmecha chassis and the rear panel (3) (except RXD-M51) withthe wires connected alligator chips.EXTERNAL VIEWRXD-M51MD(K) COVER1,1P( 98.12.10 19:11 yW6RXD-M51/M51MD4BLOCK DIAGRAM(X33)(X14)ONLY(X09)A301 (W02-)(X14)ONLYE,T TYPE(X33)(X07)RXD-M51MDRXD-M51RXD-M51ONLYRXD-M51MD200mV/47kAUX INAUX INATT3dBFMAMANT TUNER PACKERASER/PBIAS TRAPMPXOSCBIAS Q11,12IC1IC2IC3FE-BIASVR201(RF-AMP)CXA1571MIC203CXD2587Q(DSP/DAC/CD-TEXT)IC201(4ch BTL-DRIVER)BA5979SIC202MECHA.CDDIGITAL OUTUPD7805BGC-A59MD MECHA.IC1DIGITAL IN(LEVEL SHIFT)TC74HCT7007AFRDS(MAIN u-COM)IC205IC206REMOTE FLFLDRIVER(A/D)KEYENCODERROTARYC0NTROLLEDMIDTREBLEBASSEX. BASSLOUDJ1HEADPHONESAMPPOWERD138VAVRD2+12VAVR+8VAVRD3P. T.T1+5.6VAVRD16-21DECK MECHADECK ANALOGTUNERAUDIOCD BTL-DRIVERMD ANALOGMD MECHA. DIGITALCD DSP. RF-AMPFL DRIVER DISPLAYMD u-COMMAIN u-COMIC1S1 Q1-6IC2A1IC3MD MECHA.MDM-98AIC5IC4Q3,4Q5-16PROTECTIONCIRCUITQ17-21FLQ32,35Q27-29Q30,31+5VAVRQ208Q205+5VAVRQ7,8AVR+6.5V/5VQ9AVR+6V+5VAVRQ201,202FL FILAMENTAC4.5VK1POWERRELAYQ33AC INDIGITAL OUTA201DECKSP. OUTPUTM,E,T 12.25V/6 (10%)POWER RELAYJ1CONTROL u-COML3,4SPEAKERSD5ED1MECHA.DECK425mVFETESIRFFFDRFRDRTFDRTRDRSFDRSRDRMDPRch-OUTLch-OUTPB AMPREC AMPDOLBY BOUT 580mVINR/P (REC=H)DOUTRESET(FCS.TRK.SLD.SFD-DRIVE)DSCKRESETPDOWNMD-STSERCHKDATAU.T.DU.K.DX1X1X2DSTBMDDATALOAD SWMD R.DMD T.D+5.0V3.3V1.2V1.8V+3dBMUTE200mVDOLBYDECKTUNERAUXCDMD850mV+12V(5MHz)850mVRXD-M51MD(K) COVER1,1P( 98.12.10 19:11 yW7RXD-M51/M51MD5CIRCUIT DESCRIPTION1. Initialization1-1 Setting of initial conditionsWhile pressing the SET key, plug the AC power cordinto an AC power outlet.1-2 Initializing operation A microcomputer is initialized for start when the ACpower is turned on while pressing the SET key. Atthat time, CD mechanism, MD mechanism and CAS-SETTE mechanism are also initialized. During the initial operation, the display shows “INITIAL-IZE” and after that the clock blinks up on display.1-3 Initial items and back up data1-4 Mechanism initialization1-4-1 CD mechanism If a mechanism error occurs, “C” is indicated on thedisplay.1-4-2 MD mechanism The MD ON code is input within 4 seconds after turnedthe power port on, the MD initial code (D122H) is out-put. If the MD on code is not input, the error indication isdisplayed as “M“ on the display.1-4-3 CASSETTE mechanism If a mechanism error occurs, “X“ is indicated on the dis-play.chDestinationK2 E2 E1/H1 FM 97.50MHz FM 97.50MHz FM 97.50MHz2 FM 108.00MHz FM 108.00MHz FM 108.00MHz3 AM 630kHz AM 630kHz AM 630kHz4 AM 1000kHz AM 999kHz AM 999kHz5 AM 1440kHz AM 1440kHz AM 1440kHz6 AM 1610kHz AM 1602kHz AM 1602kHz7 FM 87.50MHz FM 87.50MHz FM 87.50MHz8 FM 87.50MHz FM 87.50MHz FM 87.50MHz9 FM 87.50MHz FM 87.50MHz FM 87.50MHz10 FM 89.10MHz FM 89.10MHz FM 89.10MHz11 FM 87.50MHz FM 87.50MHz FM 87.50MHz12 FM 90.00MHz FM 90.00MHz FM 90.00MHz13 FM 106.00MHz FM 106.00MHz FM 106.00MHz14 AM 530kHz AM 531kHz AM 531kHz15 FM 87.50MHz FM 87.50MHz FM 87.50MHz16 FM 98.00MHz FM 98.00MHz FM 98.00MHz17 FM 98.50MHz FM 98.50MHz FM 98.50MHz18 FM 87.50MHz FM 87.50MHz FM 87.50MHz19 AM 990kHz AM 990kHz AM 990kHz20 FM 97.40MHz FM 97.40MHz FM 97.40MHz21 FM 87.50MHz FM 87.50MHz FM 87.50MHz22 FM 87.50MHz FM 87.50MHz FM 87.50MHz23 FM 87.50MHz FM 87.50MHz FM 87.50MHz24 FM 87.50MHz FM 87.50MHz FM 87.50MHz25 FM 87.50MHz FM 87.50MHz FM 87.50MHz26 FM 87.50MHz FM 87.50MHz FM 87.50MHz27 FM 87.50MHz FM 87.50MHz FM 87.50MHz28 FM 87.50MHz FM 87.50MHz FM 87.50MHz29 FM 87.50MHz FM 87.50MHz FM 87.50MHz30 FM 87.50MHz FM 87.50MHz FM 87.50MHz31 FM 87.50MHz FM 87.50MHz FM 87.50MHz32 FM 87.50MHz FM 87.50MHz FM 87.50MHz33 FM 87.50MHz FM 87.50MHz FM 87.50MHz34 FM 87.50MHz FM 87.50MHz FM 87.50MHz35 FM 87.50MHz FM 87.50MHz FM 87.50MHz36 FM 87.50MHz FM 87.50MHz FM 87.50MHz37 FM 87.50MHz FM 87.50MHz FM 87.50MHz38 FM 87.50MHz FM 87.50MHz FML 74.00MHz39 FM 87.50MHz FM 87.50MHz FML 65.00MHz40 FM 87.50MHz FM 87.50MHz FML 69.00MHz2. TUNER preset frequencyITEMSPOWER OFFVOLUME 15BALANCE CENTERLOUDNESS OFFAMP EX. BASS ONINPUT SEL TUNERAUX INPUT 0 (-6dB)BASS 0TREBLE 0BAND FMLAST f LIMITTUNER LAST PchAUTO/MONO AUTOPch TEST fCLOCK AM 12 : 00PROG ON AM 12 : 00CLOCK PROG OFF AM 12 : 00TIMER PRO MODE PLAYSOURCE TUNERPch 1EXE OFFOTT OFFSLEEP OFFPLAY MODE TRACKREPEAT OFFCD RANDOM OFFPLAY MODE STOPTIME SINGLEDIRECTION FORWARDDECK RVS MODE pDOLBY NR OFFOPERATION MODE STOPback up data4. Main microprocessor M30622MA-174FP (X09 : IC205)4-1 Microprocessor periphery block diagram4-2 Key matrixVref = 5V ( ) of KEY : RXD-M51Desti-U-COM DiscriminationReceiving frequency Channel PORTnationDesti-DSW4 DSW3 DSW2Band range spaceIF RF92nationK, P K1 0 0 0FM 87.5MHz108.0MHz 100kHz +10.7MHz 25kHz 0AM 530kHz1700kHz 10kHz +450kHz 10kHz 0M, Y K2 0 1 1FM 87.5MHz108.0MHz 100kHz +10.7MHz 25kHz 1AM 530kHz1610kHz 10kHz +450kHz 10kHz 0JJ00FM 76.0MHz108.0MHz 100kHz -10.7MHz 25kHz 0AM 531kHz1629kHz 9kHz +450kHz 9kHz 0QFMH 87.5MHz108.0MHz 50kHz +10.7MHz 10kHz 0QRDS1 0 FML 65.0MHz74.0MHz 10kHz +10.7MHz 10kHz 0AM 531kHz1602kHz 9kHz +450kHz 9kHz 0E, TE1110FM 87.5MHz108.0MHz 50kHz +10.7MHz 25kHz 0RDS AM 531kHz1602kHz 9kHz +450kHz 9kHz 03. Destination list of TUNER (DSW4=50pin, DSW3=49pin, DSW2=48pin)0=(input low) 1=(input high)GC-E6003X09,IC203X14, IC1X14Q16X09IC4X09IC1X09, IC2X09A301X09IC206E TYPEONLYX09IC205CD mechanismMechanismcontrolcircuit MechanismcontrolcircuitAuto reversecassettemechanismHead ampDolby BCXD2587QCD-DSPTUNERPLL ICLC72131MAUDIOAMP SYSTEM IC(LC75396)MDMDM-98ALEDX14 ED1FLCM1740MKey matrixencoderremoconRDSdemodu-latorDOT driverLC75710NEDLED driverM30622MA-174FPu-COMVOLTAGEVRXD-M51MD(K) COVER1,1P( 98.12.10 19:11 yW10RXD-M51/M51MD6CIRCUIT DESCRIPTIONPin No. Name I/O Description1 CE O SYSTEM IC(LC75396)/PLL IC(LC72131) CE2 PLL DO I PLL DATA INPUT3 SD I TUNER SD DETECT INPUT H : NO TUNED L : TUNED4 STEREO I TUNER STEREO DETECT INPUT H : MONO L : STEREO5 EMPHASIS O TUNER EMPHASIS CHANGEOVER H : FM100kHz L : AM 50kHz6 RDS DATA I RDS DATA INPUT H : 1 L : 07 CE I AC OFF DETECT INPUT H : AC ON L : AC OFF8 BYTE I CONNECT GND9 CNVSS I CONNECT GND10 XCIN I TIMMER CLOCK(32.768kHz)11 XCOUT O TIMMER CLOCK(32.768kHz)12 RESET I U-COM RESET H : NORMAL L : RESET13 XOUT O MAIN CLOCK14 VSS GND15 XIN I MAIN CLOCK16 VCC 5V POWER SUPPLY17 NMI I CONNECT 5V 18 REMOCON I REMOCON INPUT INTERRUPT BY H L19 RDX CLK I RDS CLK INPUT INTERRUPT BY L H20 SCOR I SUB CODE SYNCHRO SIGNAL INTERRUPT BY H L (CXD2587Q)21 CD DC OFF O CD DSP POWER SUPPLY CONTROL H : OFF L : ON22 SCLK O CD SENSE DATD READ OUT CLOCK (CXD2587Q)23 SENSE I CD SENSE INPUT (CXD2587Q) H : 1 L : 024 CD CLK O CD DSP LOCK (CXD2587Q)25 XLAT O CD DSP LATCH OUTPUT (CXD2587Q) L : LATCH26 CD DATA O CD DSP DATA OUTPUT (CXD2587Q) H : 1 L : 027 CD RST O CD DSP RESET OUTPUT (CXD2587Q) H : NORMAL L : RESET28 SQCK O CD SUB CODE CLOCK (CXD2587Q)29 SUBQ I CD SUB CODE INPUT (CXD2587Q)30 NC O NO USED31 FL DATA O FL DRIVER DATA OUTPUT (LC75710NE)32 NC O NO USED33 FL CLK O FL DRIVER CLOCK (LC75710NE)34 CD MUTE I CD MUTE INPUT (CXD2587Q)35 MD TXD O TRANSMISSION DATA OUTPUT TO MD (UART)36 MD RXD I DATA INPUT FROM MD (UART)37 LCD O CD LASER OUTPUT CONTROL H : OFF L : ON38 NC O NO USED39 MD RST O MD RESET OUTPUT H : NORMAL L : RESET40 CD MON O CD MON OUTPUT H : ON L : OFF41 NC O NO USED42 MDP SHORT O SAME CD POWER SIGNAL H : OFF L : ON43 DOOR OPEN I CD DOOR SWITCH INPUT H : OPEN L : CLOSE44,45 NC O NO USED46 DSW0 I DESTINATION DISTINCTION (MODEL) H : RXD-M51 L : RXD-M51MD47 DSW1 I DESTINATION DISTINCTION (DOLBY) H : NO DOLBY L : DOLBY NR48-50 DSW2-DSW4 I DESTINATION DISTINCTION (TUNER)51 FL RST O FL DRIVER RESET OUTPUT (LC75710NE) H : NORMAL L : RESET4-3 Pin description of main microprocessor: M30622MA-159FPPin No. Name I/O Description52 MD CE O MD CE CONTROL L : CE53 ENC1 I ROTARY ENCODER1 (VOL. INPUT A)54 ENC2 I ROTARY ENCODER2 (VOL. INPUT B)55 LED5 O LED OUTPUT D2 SELECTOR MD /TUNER H : ON L : OFF56 LED4 O LED OUTPUT D1 SELECTOR CD H : ON L : OFF57 LED3 O LED OUTPUT D5(RED) TIMER H : OFF L : ON58 LED2 O LED OUTPUT D5(GRN) STANDBY H : OFF L : ON59 LED1 O LED OUTPUT D3 TAPE DIRECTION(FWD) H : ON L : OFF60 LED0 O LED OUTPUT D4 TAPE DIRECTION(RVS) H : ON L : OFF61 FL CE O FL DRIVER CE OUTPUT (LC75710NE)62 VCC POWER SUPPLY63 NC O NO USED64 VSS GND65 A/B-2 O DECK ACTIVITY CHOICE MODE (HA12219NT) 66 A/B-1 O DECK ACTIVITY CHOICE MODE (HA12219NT) 67 CPM O DECK MOTOR CONTROL H : ON L : OFF68 SOL O DECK SOLENOID CONTROL H : ON L : OFF69 REC F SW I DECK FEW REC SW INPUT H : OFF L : ON70 REC R SW I DECK RVS REC SW INPUT H : OFF L : ON71 PACK SW I DECK PACK SW INPUT H : OFF L : ON72 Cr02 SW I DECK CrO2 DETECT SW INPUT H : CrO2 L : NORMAL73 PLAY SW I DECK PLAY SW INPUT H : OFF L : ON74 B1/2 O DECK ACTIVITY CHOICE MODE (HA12219NT) H : B2 L : B175 A120/70 O DECK ACTIVITY CHOICE MODE (HA12219NT) H : 70U L : 120U76 BIAS O DECK BIAS CONTROL H : ON L : OFF77 NOR O DECK NORMAL (HA12219NT) H : NORMAL L : CrO278 REC/PLAY O DECK REC/PLAY CHANGEOVER H : REC L : PLAY79 DOLBY/NR O DECK DOLBY CONTROL H : ON L : OFF80 CLK O CLOCK OUTPUT TO SYSTEM IC/PLL IC81 MD PROTECT I MD PROTECTION L : PROTECT82 FAN H/L O FAN SPEED CONTROL H : LOW L : HI83 FAN ON/OFF O FAN ON/OFF CONTROL H : OFF L : ON84 A MUTE O AUDIO MUTE CONTROL H : OFF L : ON85 CD A MUTE O CD ANALOG MUTE CONTROL H : ON L : OFF86 TUNER MUTE O TUNER MUTE CONTROL H : ON L : OFF87 POWER O POWER RELAY CONTROL H : ON L : OFF88 PROTECT I PROTECTION DETECT H : PROTECT89-91 KEY1-KEY3 I KEY A/D INPUT1-392,93 AD PROTECT2,1 I PROTECTION DETECT INPUT2,1 0.5V : PROTECT94 MECHA MUTE O DECK MECHA MUTE OUTPUT H : ON L : OFF95 RDS SLEVEL I RDS S-LEVEL INPUT (E,T type)96 AVSS GND97 PHOTO I DECK ROTARY DETECT INPUT98 VREF 5V REFERENCE VOLTAGE ( NO BACKUP) 99 AVCC 5V POWER SUPPLY ( BACKUP)100 DATA O DATA OUTPUT TO SYSTEM IC/PLL IC65 66H H RECH L REC PAUSE,ARML L PLAYRXD-M51MD(K) COVER1,1P( 98.12.10 19:11 yW11RXD-M51/M51MD7CIRCUIT DESCRIPTIONBack up powersupply (+5V)X09, IC205X33, IC1MAIN u-COMM30622MA-174FPENG_KANAMD_MUTEMUTE AND OR(MAIN u-COM)back up swMD SUPPLY VOLTAGECHANGE-OVERTERMINALMD_RESETMD-STSEARCH LOAD_INDSCKK_DATADSTBMD_DATAuartrxdtxddigital inanalog L/R inanalog L/R outAD / DACONVERTERMDCONTROLu-COMDRIVEUNITMD u-DOMRF AMPENDEC / ATRACMD mecha. unit (MDM-98A)22222131uPD78058GC-B20 DISPLAY CONTROL RF AMP CONTROL SIGNAL PROCESSING ICCONTROL (TUNER) VOLUME, MUTE CONTROL INPUT SELECTOR CONTROLback up voltage detection5. Composition (MD section)5-1 Microprocessor periphery block diagramPin No Name I/O Description1 PDOWN O MDM-98A POWER DOWN DETECTOR2 SEARCH O CD SEARCH OUTPUT3 LOAD IN I LOAD SWITCH INPUT4 Avss A/D POWER SUPPLY (CON
