Kenwood-RDM72MD-cs-sm 维修电路原理图.pdf
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1、70%MICRO HiFi COMPONENT SYSTEMRD-M52MD/M72MDSERVICE MANUAL(HM-582MD/682MD/782MD) 2000-6/B51-5625-00 (K/K) 2320& STOPr e cphonesA U Xs o un ds etm enu /d e m od i s p l a yCD MD $TUNER /BANDremotedisc loading mechanismmicro hi-fi component systemtimerPUSHvolume/multi-controlDoor assy(A52-0392-02)Pane
2、l (A29-1095-04)Knob(K29-7770-13)Knob(K29-7773-04)Magnet catch(J52-0043-05)Front glass(B10-3585-03)Indicator(B12-0394-04)Dressing panel(A21-3864-03)Knob (K29-7772-14)Knob(K29-7769-03)Magnet catch(J52-0043-05)Illustration is RD-M52MD-L.KENWOOD-Corp. certifies this equipment conforms to DHHSRegulations
3、 No. 21 CFR 1040. 10, Chapter 1, Subchapter J.DANGER : Laser radiation when open and interlock defeated. AVOID DIRECT EXPOSURE TO BEAM.In compliance with Federal Regulations, following are repro-ductions of labels on, or inside the product relating to laserproduct safety.RadioFans.CN 收音机爱 好者资料库Opera
4、tion to resetThe microcomputer may fall into malfunction (impossibil-ity to operate, erroneous display, etc.) when the power cordis unplugged while unit is ON or due to an external factor.In this case, execute the following procedure to reset themicrocomputer and return it to normal condition.Unplug
5、 the power cord from the power outlet then,while holding the menu/demo key depressed, plug thepower cord again. Please note that resetting the microcomputer clears thecontents stored in and it returns to condition when it left thefactory.m e n u / d e m oRD-M52MD/M72MD2CONTENTS / ACCESSORIES / CAUTI
6、ONSCONTENTS / ACCESSORIES / CAUTIONS. 2EXTERNAL VIEW.3CIRCUIT DESCRIPTION.4ADJUSTMENT.10PARTS DESCRIPTIONS .11PC BOARD . 12SCHEMATIC DIAGRAM . 17EXPLODED VIEW .31PARTS LIST.35SPECIFICATIONS .45ContentsAM loop antenna (1)(T90-0852-05)Remote control unit (1)Battery cover(A09-1161-08)Batteries (R6/AA)
7、(2)Speaker cord (2) FM indoor antenna (1)(T90-0858-05) Pin spikes (12)(D21-1974-04)Anti-slip sheets (12) (G16-0878-14)RD-M72MD ONLYCleaning cloth (1) (W01-0990-04)Feet for speaker (8)AccessoriesCautionsREMOTE CONTROLLERMODEL NAMEMODELDESTINATIONSBATTERY COVERA70-1385-05RC-M0507E-ITRD-M72MDTHEA09-118
8、3-08A70-1399-05RC-M0301ERXD-M52MD-ST2A09-1161-08A70-1399-05RC-M0301ERXD-M52MD-LTHEA09-1161-08SYSTEMMAIN UNITDESTINATIONSPEAKERSP CORD PARTS NoFOOT FOR SPEAKERHM-582MD-LRD-M52MD-LETHLS-M52-LE30-5828-05J02-0624-08HM-682MDRD-M52MD-ST2LS-M52-SE30-5828-05J02-0624-08HM-782MDRD-M72MDETHLS-M72E30-5880-05J02
9、-0626-08System configrationRemocon configrationRadioFans.CN 收音机爱 好者资料库RD-M52MD/M72MD3EXTERNAL VIEWSERIAL NO.+-+-RLSUBWOOFERPRE OUTDIGITAL INOPTICALOUTINAUX(TAPE/MD)ANTENNAFM75GNDAMSPEAKERS(6-16)RLOptical receiving module(W02-2731-05)AC power cord *(E30-)AC power cord bushing (J42-0083-05)Lock termin
10、al board(E70-0127-05)Pin jack(E63-1082-05)Lock terminal board(E70-0053-05)Pin jack(E63-0164-05)CD mecha unit CDM-34DECK mecha unitNJU3713D (IC4)EXPANDER ICX28MDM-06MD mecha unitHD6432227N01FABack upcircuitA/DX29, IC1M30624MG-304FP(DECK)-303FP(MD)SIOSIOPWMMain uCOMPWMA/DA/DAMP hadrware circuitAMP_ sy
11、stem_IC (input selecter)TUNER unit (RDS unit)CD TAPE MD TUNER AUXX29, IC8A/DA/DA/DINTINTRESETEEPROMINTINTUARTA/D A/DencoderREMstnbyejectcd md/ tapeKey matrix(8keys X2 lines)LCD module (6464dot)LCD driverRESET & CEcircuit(mech ucom)RD-M52MD/M72MD4CIRCUIT DESCRIPTION3. Microprocessor :M30624MG-303FP(M
12、D version):M30624MG-304FP(DECK version)3-1 Microprocessor periphery block diagramDESTI-DESTINATION SWRECEIVINGCHANNELUNIT321BANDFREQUNYIFRFEMPHASISNATION(40Pin) (39Pin) (38Pin)RANGESPACEK,PKI000FM87.5MHz108.0MHz100kHz+10.7MHz25kHz1AM530kHz 1700kHz10kHz+450kHz10kHz0ME1001FM87.5MHz108.0MHz50kHz+10.7MH
13、z25kHz0AM531kHz 1602kHz9kHz+450kHz9kHz0E,TE3110FM87.5MHz108.0MHz50kHz+10.7MHz25kHz0(RDS)AM531kHz 1602kHz9kHz+450kHz9kHz01.Initializing the CD/MD Receiver1-1Initialization MethodThe CD/MD receiver will be initialized when you pressed SOUND key and turn the AC on.1-2 Contents of Initialization1 MD dis
14、c wil not be ejected from MD mechanism.2 CD disc will be ejected from CD mechanism.2.Conditions according to the Destination( ) Port of MicroprocessorRD-M52MD/M72MD5CIRCUIT DESCRIPTION3-2 Pin Description of MicroprocessorPin No.Pin NameI/ODescription18SW2IDetection port of 8cm disc for CD mechanism.
15、2SCLKOClock output to DSP IC(X29,IC9).3SENSISense input port from DSP IC(X29,IC9).4FAN/DAOControl port of fan motor.5DATAOData output to DSP IC(X29,IC9).6XRSTOReset output to DSP IC(X29,IC9).7CLOKOClock output to DSP IC(X29,IC9).8BYTE-Connected to ground.9CNVSS-Connected to ground.10XTINIClock input
16、(32.768kHz).11XTOUTOClock output(32.768kHz).12RESETIReset signal input.13XOUTOMain clock output(1MHz).14VSS-Connected to ground.15XINIMain clock input(1MHz).16VCC-Power supply.17NMI-Power supply.18u-COM CEIDetection port of AC off.19REMIInput port of remote control signal.20SCORIInput port of sub co
17、de synchronized signal.21STBY REDOStandby LED(red) control terminal.22LCD BKLTOControl terminal of LCD back light.23STBY GROStandby LED(green) control terminal.24LED CDOLED(CD) control terminal.25LED MD/TAPEOLED(MD/TAPE) control terminal.26CD XLATOLatch output to DSP IC(X29,IC9).27ENC AIInput port o
18、f volume encoder.28ENC BIInput port of volume encoder.29MD RXDIData input from MD mechanism microprocessor.30MD TXDOTransmission data output to MD mechanism microprocessor.31LCD SIOData output to LCD driver.32LCD AOOAO control to LCD driver.33LCD SCLOClock output to LCD driver.34LCD RSTOReset output
19、 to LCD driver.35SMK M/DIDiscrimination port for deck and MD.36SQSOIData input for CD sub Q data.37SQCKOClock output for CD sub Q data.38-40SMK1-3IDiscrimination port of destination for TUNER.41STBOStrobe output to NJU3713D(X28,IC4).42W/ROUnused.43SDAI/OE2PROM data.44SCLOE2PROM clock output.45OP SWI
20、Input port of open switch for deck(deck version only).46LCD CSIOCE output to LCD driver.47CL SWIInput port of close switch for deck(deck version only).48PH SWIInput port of photo sensor for deck(deck version only).49REC F SWIDeck forward switch input(deck version only).50HALF SWIInput port of half s
21、witch for deck(deck version only).51PLAY SWIInput port of play switch for deck(deck version only).52TYPE SWIDetection port for tape type(Normal/CrO2). 53REC R SWIDeck reverse switch input(deck version only).54SBUSY-Unused.55SDATA-Unused.56RDS DATAIRDS data input(E/T type only).57TMUTEOTUNER muting c
22、ontrol.58SDIDetection terminal of SD signal for TUNER.59STIDetection terminal of stereo signal for TUNER.60PLL DATAOData output to PLL IC.61PLL CLKOClock output to PLL IC.62VCC-Power supply.RD-M52MD/M72MD6CIRCUIT DESCRIPTIONPin No.Pin NameI/ODescription63PLL CEOPLL chip enable.64VSS-Connected to gro
23、und.65PLL DOIPLL IF count input.66EMP/MONOOControl port of DE-emphasis.67AMUTEOAudio muting control.68SPRLYOSpeaker relay control.69PWRRLYOPower relay control.70NC-Disconnected.71HPRLYORelay control terminal for headphones.72HPDETIDetection terminal of headphones. 73EVR CLKOClock output to sound con
24、troller(X29,IC6).74EVR DATAOData output to sound controller(X29,IC6).75RDS CLKIRDS clock input(E/T type only).76BACK CHK/ DECK SLT CLODetection port of back up voltage for MD mechanism. (MD version) Control port of slot closing for deck. (Deck version)77BACK ON/ DECK SLT OPOPower on for MD mechanism
25、. (MD version) Control port of slot opening for deck.(Deck version)78MD RST/DECK CLKOReset of MD mechanism and the clock of expander IC for deck.79MD CE/DECK DATAOCE of MD mechanism and the data of expander IC for deck.80MSTOPIDetection port of loading end for CD mechanism.81LD ONOControl port of la
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