Kenwood-MDXF-1-Service-Manual电路原理图.pdf

70%MD PERSONAL STEREO SYSTEMMDX-F1SERVICE MANUALPUSHOPEN0FM 75AMGNDAC IN ANTENNAIn compliance with Federal Regulations, following arereproductions of labels on, or inside the product relating tolaserproduct safety.* Refer to parts list on page 40 .KENWOOD-Crop. certifies this equipment conforms toDHHS Regulations No.21 CFR1040. 10, Chapter 1, Sub-chapter J.DANGER : Laser radiation when open and interlockdefeated. AVOID DIRECT EXPOSURE TO BEAM.Front glass(B10-3540-04)Knob ass'y(K29-7753-04) : S(K29-7755-04) : RPanel ass'y(A60-1729-02) : S(A60-1803-02) : RKnob(K29-7669-02)Front glass(B10-3541-03)Knob(K29-7669-02)Knob(K29-7718-03) : S(K29-7750-03) : RCassette holder(A53-2174-02) : S(A53-2188-02) : RRod antenna(T90-0828-05)Plastic cabinet(A02-2949-01) : S(A02-2950-01) : RLock terminal board(E70-0051-05)Miniature phone jack(E11-0399-05)Panel(A29-1078-04)S : silverR : redNote:Please contact KENWOOD service in your side ifyou want to get the AC power cord.Loop antenna (1)(T90-0852-05)Remote control unit (1)(A70-1325-05):RC-MDX0101Battery cover (A09-1151-08)R6/SUM-3 batteries for remote (2)AC plug adaptor (1)(E03-0115-05)MDX-F12CONTENTS / ACCESSORIES / CAUTIONSCONTENTS / ACCESSORIES / CAUTIONS.2CONTROLS.3DISASSEMBLY FOR REPAIR.4CIRCUIT DESCRIPTION.5ADJUSTMENT.16PC BOARD.20SCHEMATIC DIAGRAM.26EXPLODED VIEW.38PARTS LIST.40SPECIFICATIONS.Back coverContentsAccessoriesCautionsStored contents which are cleared immediately when power plug is unplugged from power outletStored contents which are cleared in at least a day after power plug is unplugged from power outletClock displayMD recorder sectionAmplifier section“on/standby“ status(ON or STANDBY)Input selectionVolume control valueTone control levelsTuner sectionReceiving bandFrequencyPreset stationsAuto tuning settingCassette deck unitTransport directionDOLBY NRReverse modeTimer setting contentsMemory backup functionNote related to transportation and movementBefore transporting or moving this unit, carry out the following operations.1Remove the CD or MD from the unit.2Press the 6key of the MD.3Wait for some time and verify that the displaybecomes as shown in the figure.4Press the 6key of the CD.5Wait for some time and verify that the displaybecomes as shown in the figure.6Wait a few seconds and turn the unit OFF.MDNODISCCDNODISCOperation to resetThe microcomputer may fall into malfunction (impossibility to operate, erroneous display, etc.) when the power cord is unplugged while unit is ON or due to an external factor. In this case, execute the following procedure to reset the microcomputer and return it to normal condition.Unplug the power cord from the power outlet then, while holding the REPEATkey depressed, plug the power cord again.CRPlease note that resetting the microcomputer clears the contents stored in and it returns to condition when it left the factory.0REPEATActionMeaningDisplayed MessageCRNo disc is placed on the tray.CRAn attempt is made to record digitalsignal from a source while its digital copyhas been prohibited by SCMS.CRThere is no recordable area on the disc.CRAn attempt is made to record a 256thtrack.CRAn attempt is made to assign a title withmore characters than usable.CRThe disc does not contain any record-ings.CRThe disc does not contain any tracks buthas a disc title.CRThe TOC *1data of the disc is beingread.CRThe data related to editing or recording isbeing written in the disc.CRThe contents of UTOC *2are abnormal.CRAn attempt is made to perform editingbeyond the restrictions, for example toerase a track which is too short.CRThis is a message for confirming if edit-ing can really be executed.CRThe minidisc is write-protected.CRThe minidisc is only for playback.CRThis indicates some trouble.CRLoad a disc.CRRecording is not possible.CRUse another recordable disc.CRMore than 256 tracks cannot be recordedper disc.CRRefer to “Total number of title characters”.CRWhen playback is required, use a recorded disc.CRThe disc can be used for recording without any problem.CRThis is a normal operation.CRThis is a normal operation.CRPerform “ALL ERASE”operation. If thisis not possible, use another disc.CRPerform editing following the restrictions.CRPress the ENTERkey to execute editing.CRCancel the write protection.CRInsert a minidisc for recording.CRReturn to normal condition is made by switching the unit off and then on again.NO DISCCAN'T COPYDISC FULLTITLE FULLBLANK DISCNO TRACKSREADINGWRITINGDISC ERRORCAN'T EDIT?(blinking)PROTECTEDPLAY ONLYUNIT ERRORMD recorder section (Displayed messages and actions to be taken against them)*1All minidiscs contain a Table of Contents (TOC) in addition to sound signals. The TOC is similar to the table of contentsin a book and contains information, such as track numbers, track length, and character information, that cannot berewritten.*2In addition to the TOC, minidiscs also contain a special Users Table of Contents (UTOC) that contains track number, tracklength, and character information, that can be rewritten.Memory Backup for the MD Recorder SectionThe contents of the memory are not stored on the disc if the power cord is unplugged.If the power cord is unplugged suddenly or there is a power failure, the information on recording and editing(normally recorded when the minidisc is ejected) may be erased or destroyed before it is recorded on theminidisc. Once the information has disappeared, it can not be recovered.After recording or editing, always remove the minidisc to record the recording or editing information.MDX-F13CONTROLSDisplay( The displays given in this manual are approximations only.They may differ from what actually appears on the display.)1 PGM (program) indication2 Indication related to CD and MD3 Timer-related indicators4 A.P.S. (Auto Power Save) indicator5 Character information display section (dot display)Shows character information including the input selection, volume level and disc/track title6 Character information display sectionFrequency indication, time indication, track No., program No., etc.7 Tuner-related indicators8 TAPE EQ. indication9 O.T.E. (ONE TOUCH EDIT) indicationAppears during one-touch recording.0 Selector-related indicators! TITLE SEARCH indication MD EDIT indication# LOUD (Loudness) indication$ EX.BASS (extra bass) indication¥CRCR¥CRCR¥CRCR¥CRCR¥CRCR¥CRCR¥CRCR¥CRCR¥CRCR¥CRCR¥CRCRTITLE SEARCHMHzkHzO.T.E.TAPE EQ.STEREOTUNEDAUTOTOTAL3ALL 3REPEAT 3RANDOM CRSLEEPTRACK NO.PMAMFM88888888MD EDIT1 2LOUD EX BASSA.P.S. CRO.T.T. PROG.RECRECPGM5!6 # $72 41 03398Cassette holder(POWER) key“STANDBY/TIMER” indicatorRemote sensorDisplay( ) STOP key (CD/MD/TAPE/TUNING MODE)key (CD/MD/TAPE/tuner tuning)“SOUND” key“MENU” key“REPEAT” key“TUNER FM/AM” key“CD ” key“MD ” key“TAPE ” keyPUSH OPEN button“TAPE REC” key“MD REC” key“VOLUME/MULTI CONTROL” knobMini Disc insertion slotEJECT ( ) key“SET/Demo” keyAbout the one-touch operation functionThis unit incorporates the one-touch operation function for the user's convenience.With this function, pressing any key enclosed in ( ) while the unit is in standby mode immediately startplayback (or reception).PUSH OPEN buttonTop panelMain unitFront panelMDX-F14DISASSEMBLY FOR REPAIR22111 133x3x2x13x1x1x1x1x1x32x3FIG.1BOTTOMFRONT PANEL BOTTOM4444FIG.2555555FIG.31Remove 3 screws from bottom side(1X3).2Remove 8 screws on rear panel(2X8).3Remove 3 screws on rod ant(3X3).4Lift rear side of top cover and remove it.Insert the screw driver to contact of door ass'y and subpanel if remove door ass'y.How to Disassemble Front Panel and RearPanelHow to Remove Door Ass'y5Remove 4 screws(4X4).6Lift and slide CD parts of top cover by using handle7Remove 6 long screws(5X6), slide front panel front-wards.MDX-F15CIRCUIT DESCRIPTION1. Initialization1-1 SettingInsert the AC power cord with pressing the REPEAT key.1-2 OperationDisplay shows “INITIALIZE“ if the unit works in initializa-tion mode. It shows “STANDBY“ after the unit is end ofwork.The unit is shipment condition(MD disc comes out, RAMis clear, Backup data is also.) if normal mechanisms areinitialization.Display shows error message as follows if the everymechanism has an initialization error and CD door switchmalfunction.Error CD The first digit: CMD The third digit: MCASSETTEThe 5th digit: XCD DOOR SWThe 7th digit: S2. TUNER Preset3. TUNER SPECIFICATIONSP.CHBANDFREQP.CHBANDFREQ1FM83.50MHz6FM90.00MHz2FM76.00MHz7FM76.00MHz3FM89.10MHz8AM1629kHz4FM108.00MHz9AM1602kHz5FM91.50MHz10AM999kHzP.CHBANDFREQP.CHBANDFREQ11AM630kHz26FM76.00MHz12AM1440kHz27FM76.00MHz13FM106.00MHz28FM76.00MHz14AM531kHz29FM97.50MHz15FM76.00MHz30FM106.00MHz16FM91.50MHz31FM76.00MHz17FM92.50MHz32FM76.00MHz18FM76.00MHz33FM76.00MHz19AM990kHz34FM76.00MHz20FM91.40MHz35FM76.00MHz21AM531kHz36FM76.00MHz22FM76.00MHz37FM76.00MHz23FM76.00MHz38FM76.00MHz24FM76.00MHz39FM108.00MHz25FM76.00MHz40AM945kHzBANDRECEIVINGCHANNEL IFPLLFREQ.SPACEFM 76.0MHz87.5MHz 100kHz-10.7MHz25kHz FM 87.5MHz108MHz50kHz-10.7MHz25kHz AM531kHz1629kHz9kHz+450kHz9kHzACTIVEPort # Port NameI/ODescriptionsHL1DSTPOCD disc motor servo control output portOFFON2XLONOBias control port ONOFF3LDCOLD controlOFFON4SCLKOCD sense data read clock5SENSEICD sense input106CD CLKOClock for CD DSP7XLATOCD DSP latch output8BYTEIGND9CNVSSIGND10XCINITimer clock(32.768kHz)11XCOUTOTimer clock(32.768kHz)12RESETIMicroprocessor reset signal inputNORMALRESET13XOUTOMain clock port14VSS-GND15XINIMain clock port (10MHz)16VCC(B.U.)-Power supply port (+5V)17NMII+5.0V18REMOCONIRemote control signal input port19NCOopen20SCORISub-code synchro signal port21XRSTOCD DSP reset signal output portNORMALRESET22PLL DOIPLL data input port23SA CEOPLL IC chip enable24SA CLKOPLL IC clock25SA DATAOPLL IC data output port26STIStereo sensor port for tunerMONOSTEREO27SDISD sensor port for tunerUNTUNEDTUNED28SQCKOSub-code clock for CD29SQSOISub-code input port for CD30NCOopen4. MAIN MICROPROCESSOR: M30622MC-746(X09,IC601)4-1 Port descriptionsMDX-F16CIRCUIT DESCRIPTIONACTIVEPort #Port NameI/ODescriptionsHL31FL DATAOOutput port for FL driver32NCOopen33FL CLKOClock output port for FL driver34CD DOOR SW2ICD DOOR OPEN sensor switchON35K DATAOData transmission port to MD(UART)36MD DATAIData input port from MD(UART)37DSCKOMD IC clock38CD DATA OCD DSP data output port 39DSTBOMD STB output port40SDA(EPROM)-open41SCL(EPROM)-open42MD RSTOReset signal port for MDRESETNORMAL43PDOWNOMD POWER ONOFF44MD STOMD ON/CD SYNC45SEARCHOMD SEARCH output port46LOAD SWIMD LOADING sensor switch input port OFFON47CD DOOR SW1ICD DOOR sensor switch port OFFON48RDS DATA-GND49MD NOT-GND50F1/MICRO-GND5156NC-open5759DSW0DSW2-GND60DSW3IDestinations selectorJ TYPEM TYPE61VOL CLKOSystem IC 62VCC(B.U.)-Power supply port (+5V)63A120/70OPlayback EQ selector64AVSS-GND65A/B-2OCassette deck operation mode selector66A/B-1OCassette deck operation mode selector67BT/2OCassette deck operation mode selector68REC/PLAYOCassette deck rec/play mode selectorRECPLAY69BEAT CANCELOBeat cancel control portONOFF70BIASOBias control port ONOFF71CPMOCassette deck motor control portONOFF72SOLOCassette deck solenoid control portONOFF73PLAY SWICassette deck play switch control portOFFON74CrO2 SWICrO2 tape detectionCrO2NORMAL75PACK SWICassette half switch control portOFFON76REC F ICassette deck forward rec switch control portOFFON77REC R ICassette deck revise rec switch control portOFFON78VOL DATAOSystem IC data port79A MUTEOAudio mute control portOFFON80STBYOSTANDBY control port81NCOopen82POWEROMAIN POWER control portOFFON83FL RSTOReset signal output port for displayNORMALRESET84FL CEOChip enable signal output port for display85ENC1IRotary encoder input1 port86ENC2IRotary encoder input2 port87LEDROLED(STANDBY,RED) control portONOFF88LEDGOLED(TIMER,GRN) control port ONOFF89PHOTOICassette deck turning detection90,91KEY2,KEY1IKey a/d converter input port92NCOopen93ADP3IProtection signal I/o port 3(ON: less0.5V)94ADP1IProtection signal I/o port 1(ON: less0.5V)95ADP2IProtection signal I/o port 2(ON: less0.5V)96AVSS-GND(A/D)97CEIBACK UP detection port98VREF-A/D converter standard voltage (+5V)99VCC(B.U.)-A/D converter power supply(+5V)100CD POWEROCD DSP power supply controlONOFFMDX-F17CIRCUIT DESCRIPTION5. Voltage Key Matrix(port # of IC601)Voltage of Key00.35V0.50.9V1.01.5V1.62.1V2.22.8V2.93.4V3.54.0V4.14.6V4.85.0VKEY1(#91)SOUNDREPEATMENUSETMD EJECTMD REC-TAPE RECOFFKEY2(#90)POWERSTOPMDCDTUNERTAPESKIP UPSKIPOFFPLAY/PAUSEPLAY/PAUSEFM/AMPLAYDOWNPort #Port NameI/ODescription14M/16MIGND264MIGND3LDVAROLaser power adjust port4ADJSOCheck port5CINITrack count port6NC-No use7UNLOCKIGND8BYTEIGND9CNVSSIGND10STID OUTOST-ID output port11SEACH OUTOMD research port12RESETIReset signal input port13NC-No use14VSS-GND15MCCKI8.4672MHz16VCCI+3.2v17NCIConnection to H level18DINTIInterrupt signal from MD LSI19SFSYIFrame synchro20ST-IDIST-ID IN/MD ON/re-power after power breakdown21SERCHICD search input port22MDR SWOSave control motor drive23CDB SELOCD BLK SEL output port24DSENSEIServo SENSE signal form MD LSI input port25PDOWNIPower down detection port26HDONOCurrent control of record head27EEPROMOCancel signal output port to EEP-ROM284.23O4.23MHz29EEPKOEEP-ROM serial clock port30EEPDI/OEEP-ROM data I/o port31MDDATAOMD data output port32KDATAISystem data input port33DSCKISystem synchro clock input port34DSTBOSystem line busy or to permit usage 35DATAOR data36SBOISerial data in sub code input port37SBCKOSystem line of serial clock in sub code output port38LATCHOR-latch39R/PORec/play selector40FOKIFocus servo monitor port41FLASH LINo use42CLOCKOR clock43SYRSOMD LSI resister selector output port44SYRDOMD LSI read signal output port45SYWROMD LSI wright signal output port46FLASH HINo use47-54SYSD(7-0)I/OMD LSI data bus(0-7)55-59SLOT(1-5)INo use60NCONo use61CRTRO SWIGND62VCCI+3.2V63INNERIPickup start position detection port 64GND-GND65L3DATAOAD/DA serial data output port66L3MODEOAD/DA serial mode output port67L3CLKOAD/DA serial clock output port6. MD System Microprocessor:IX0342AW(IC1401)MDX-F18CIRCUIT DESCRIPTIONPort #Port NameI/ODescription68,69NCONo use70PCNTOOPower control output port71EJECTONo use72LDONOLaser diode on signal port(H:ON)73A/BIAD/DA converter selector (in or out)74SBSYISynchro signal input port75DAPONONo use76DFSOONo use77DFSIONo use785/3IGND79C/NIGND80XRSTOMD LSI reset signal port81ADMUTEOAD muting port82LD+OLoading motor positive control port83LD-OLoading motor negative control port84MUTEOMuting signal output port85DOUT MTONo use86-88TEST(2-0)INo use89AVCK3IPower supply monitor of motor driver90AVCK2