Kenwood-RDM-52-MD-Service-Manual电路原理图.pdf

70%MICRO HiFi COMPONENT SYSTEMRD-M52MD/M72MDSERVICE MANUAL(HM-582MD/682MD/782MD)©2000-6/B51-5625-00 (K/K) 2320&STOPrecphonesAUXsoundsetmenu/demodisplayCD MD $TUNER/BANDremotedisc loading mechanismmicro hi-fi component systemtimerPUSHvolume/multi-controlDoor assy(A52-0392-02) Panel (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 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.Operation 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 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.menu/demoRD-M52MD/M72MD2CONTENTS / ACCESSORIES / CAUTIONSCONTENTS / 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) (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-M72MDTHEA09-1183-08A70-1399-05RC-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-M72E30-5880-05J02-0626-08System configrationRemocon configrationRD-M52MD/M72MD3EXTERNAL VIEWSERIAL NO.+-+-R LSUBWOOFERPRE 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 terminal 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/D A/DAMP hadrware circuitAMP_ system_IC (input selecter)TUNER unit (RDS unit)CD TAPE MD TUNER AUXX29,IC8A/DA/DA/DINTINTRESETEEPROMINTINTUARTA/DA/DencoderREMstnbyejectcd md/ tapeKeymatrix(8keys X2 lines)LCD module (6464dot)LCD driverRESET & CEcircuit(mech ucom)RD-M52MD/M72MD4CIRCUIT DESCRIPTION3. Microprocessor:M30624MG-303FP(MD 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+10.7MHz25kHz0AM531kHz 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 Initialization1MD disc wil not be ejected from MD mechanism.2CD 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.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(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 code 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 of 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 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 SWIInput 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 switch 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 control.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 ground.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 controller(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. (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 laser on.82SPEEDOPlay back output port of hi-speed for CD.83DC OFFOPower contro of system IC(X29,IC10) for CD.84LOAD OUTOControl port of loading out for CD mechanism.85LOAD INOControl port of loading in for CD mechanism.86V/HOControl port of vertical and horizontal for CD. V/H version only87DINSWIDetection port of disc in for CD.888SW1IDetection port of 8cm disc for CD.89XY SWIInput port of sensor for vertical and horizontol. V/H version only90PROTIDetection port of current protection.91PROT TEMPIDetecttion port of temperature compensating for protection.92AIN LEVELIInput port of audio signal.93BACKVIInput port of back up voltage for MD.94RDS SLEVELIRDS signal level input(E/T type only).95KROIKey return signal input.96AVSS-Connected to ground.97KR1IKey return signal input.98AVREF-A/D,D/A reference voltage.99AVCC-A/D,D/A power supply.10012SWIDetection port of 12cm disc for CD.Deck version only.4. CD Test Mode4-1 Entering the Test ModeTo enter the test mode, press the CD PLAY/PAUSE key and turn the AC on.4-2 Cancelling the Test ModeTurn the AC off.4-3 Keys and Operation in the Test ModeKEYSLCDOPERATIONCDCD TEST-03Tracking servo off. PLAY/PAUSECD TEST-05All servo on.menu/demoFB operation when servo on. Sled in when servo off.soundCD TEST-22 HIHi speed (CD servo) when stop mode CD TEST-22Normal speed (CD servo) when stop mode. setCD TEST-05FF operation when servo on.Sled out when servo off.RD-M52MD/M72MD7CIRCUIT DESCRIPTION1. Setting of Continuous Playback Mode No.Key1Volume/multi-controlSelect CPLAY MODE 2Load disc3PLAYCPLAY MIDc=xxxx a=yy error (xxxx=C1 error, yy=ADIP error)4MODECPLAY(zzzz) CPLAY address(MID=0300h, OUT=0700h, IN=0030h cluster)5MODEhd address (=current head address, =ADIP address)In No.5, Display shows - if can't read disc.2. Change of Playback Points(in continuous playback mode)No.KeyDisplay/FunctionDisplay/Function1PLAYCPLAY OUT2Carry out No.4 and 5 in the above table.3PLAYCPLAY IN4Carry out No.4 and 5 in the above table.5STOPCPLAY MODE6EJECTDisc out1. Continuous Recording SettingNo.KeyDisplay/Function1Volume/multi-controlSelect CREC MODE2Load the recordable disc3PLAYCREC MID4PLAYCREC (zzzz) CREC address(0300h cluster=recording start point)5DISPLAYhd address6DISPLAYc=xxxx a=yy error7DISPLAYCREC (zzzz)8STOPCREC MODE 2. Change and End of Recording Points1Carry out No.1 to 3 in the above table SelectCREC MID2Volume/multi-controlCREC OUT3PLAYCREC (zzzz) CREC address (0700h cluster=recording start point)Carry out No.5 to 8 in the above table4PLAYSelect CREC MID5Volume/multi-controlSelect CREC IN6PLAYCREC (zzzz) CREC address (0300h cluster=recording start point)Carry out No.5 to 8 in the above table7EJECTDisc outStarting address is the followings.IN=30h cluster, MID=300h cluster, OUT=700h clusterFor more information on each adjustment mode, refer toeach section of 7, “Electrical adjustment“.If other adjustment mode has been entered incorrectly,press the STOP key to exit the mode.*The number 9 - 13 are not used for service. If thesemode have been entered incorrectly, press the STOPkey immediately to exit the mode. Specially, do not useEEP INITIAL. (E2PROM data has initialized if used it.)1.The recording start addresses of IN, MID, and OUT aredescribed below.IN30H clusterMID300H clusterOUT700H cluster2.An erasure prevention control is not detected in the testmode. Be careful not to enter the continuous recordingmode using a disc containing the data that should not beerased.3.Do not record continuously for more than five minutes.4.Take care that no vibration is applied during continuousrecording.6-6 Continuous Playback Mode6-7 Continuous Recording Mode5 Initializing the MD Mechanism5-1 Initialization MethodWhile pressing the MD PLAY/PAUSE key and MDEJECT key simultaneously, turn the AC on.6.MD Test Mode for Adjustment6-1 Entering the Test ModeWhile pressing the MD PLAY/PAUSE key and rec keysimultaneously, turn the AC on.6-2 Cancelling the Test ModeTurn the AC off.6-3 Key Operations for AdjustmentNo.LCDDESCRIPTIONSECTION1TEMP ADJUThe work of adjustment is unnecessaryin this mode.7-52LDPWR ADJULaser power adjustment.7-63LDPWR CHECLaser power check.7-64EFBAL ADJUTraverse adjustment.7-75TE B. ADJAutomatic EF balance adjustment.-6FBIAS ADJUFocus bias adjustment.7-87CPLAY MODEContinuous playback mode.6-68CREC MODEContinuous recording mode.6-79STT-LIMITCheck the mechanism start limitswitch position.-10JUMP MODETrack jump checking mode.-11SRV DAT REServo data reading.-12EEP MODEE2PPROM data reading or rewrite.-13EEP INITIALE2PPROM data initializing.-KEYSOPERATIONVolume/multi- controlSelect mode or adjustment value change.MD PLAY/PAUSEFix mode or adjustment value.STOPCancel the selected mode and change to menu page.menu/demoSelect servo of PIT or GROOVE.displayChange-over the display mode.SKIP UPPickup moves outwards when pressed skip up key.SKIP DOWNPickup moves inwards when pressed skip down key.LDCDESCRIPTION>Servo on.>>Tracking servo on.GRVServo groove mode.CLV-SRough servo clock.CLV-ASpindle lock.RECORDRecordable disc or no disc.6-4 LCD Indication for Mechanism Operation6-5 Selection of Adjustment Test ModeWhenever the volume/multi-control knob is turnedtheadjustment test mode is selected.7. Electrical adjustment7-1Precaution during confirmation of Laser DiodeemissionDuring adjustment, do not view the emission of a laserdiode from just above for confirmation. This may damageyour eyes.7-2Precaution on handling of Optical pick-up(KMS-260B)The laser diode in an optical pick-up is easy to be subjectto electrostatic destruction. Therefore, solder-bridge thelaser tap on the flexible board when handling the opticalpick-up.When removing the flexible board from the connector,make a solder bridge in advance, then remove the board.Be careful not to remove the solder bridge before insert-ing the connector. Moreover, take careful measuresagainst electrostatic destruction. The flexible board is cuteasily. Handle the flexible board with care.7-3 Precaution during adjustment1)Perform the adjustment and confirmation marked with “O”in the order shown in the table when the parts below arereplaced.2)In the test mode, perform the adjustment. After adjust-ment is completed, cancel the test mode.3)Perform the adjustment in the order described.4)Use the following tools and measurement equipment.CD test disc TGYS-1Laser power meterOscilloscope (with bandwidth of more than 40 M)(Calibrate the probe before measurement.)Digital voltmeterThermometer5)Take care that VC and GND (ground) are not connectedon the oscilloscope when two or more signals are moni-tored on the oscilloscope. (VC and GND are short-circuit-ed in this case.)7-4Creating the recordable continuous recordingdiscThis disc is used for focus bias adjustment and error rateconfirmation. How to create the recordable continuousrecording disc is 6-7.OpticalBD boardpick-upIC6D101IC1,IC2,IC101.Temperature compen-sation offset adjustmentXOOO2.Laser power adjustmentOOXO3.Traverse adjustmentOOXO4.Focus bi