Kenwood-RDVH-7-Service-Manual电路原理图.pdf

673606610652671621607672616620605ejecton/standbymodestereo amplifier/tuner/CD RD-VH7standbytimerphonestuningbanddemo auto/monop.callenter inputstopmulti control609664J1J5J2J1J2J3J4A1631STEREO AMPLIFIER/TUNER/CD PLAYERRD-VH7SERVICE MANUAL(VH-600/700)©1999-6/B51-5551-00 (K/K) 3133Knob(EJECT) *(K29-)Dressing panel(A21-3760-02)Panel(A60-1647-11)Insulator assy(J02-1444-24)Dressing panel *(A21-)Dressing panel(A21-3761-02)Indicator(B12-0360-04)Knob(K29-7556-04)Escutcheon(B07-2452-13)Front glass(B10-3488-03)Knob(POWER)(K29-7554-04)Power cord bushing(J42-0083-05)Lock terminal board(E70-0052-05)Screw terminal board(E70-0111-05)Phono jack(E63-1082-05)Oscillating module(W02-1114-15)Rectangular receptacle(E08-0311-05)Phono jack(E63-1089-05)Side plate(A50-1326-02)Phono jack(E63-1088-05)Phono jack(E63-0164-05)AC power cord *(E30-)70%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.*Refer to parts list on page 31.RD-VH7(K) COVER1,1P( 99.10.30 2:43 PM yW2TIMERSLEEPPOWERREPEAT123456789+10 0 +100RANDOMP.MODECHECKCLEARMUTECDMDTAPEINPUTAUTO/MONO TUNER/BANDDISPLAY MEMORY TONEREMOTE CONTROL UNITRC-RP0702N.B.TAPE MDP.CALLO.T.E.VOLUMECONTROLTIMERSLEEPPOWERREPEAT123456789+10 0 +100RANDOMP.MODECHECKCLEARMUTECDMDTAPEINPUTAUTO/MONO TUNER/BANDDISPLAY MEMORYTA/NEWS PTYTONEREMOTE CONTROL UNITRC-RP0702EN.B.TAPE MDP.CALLO.T.E.VOLUMECONTROLAM loop antenna (1)(T90-0842-05)Remote control unit (1)(A70-1282-05) : RC-RP0702Battery cover (A09-1148-08)Remote control unit (1)(A70-1283-05) : RC-RP0702EBattery cover (A09-1148-08)Batteries (R6/AA) (2)Replacement front feet (2) (J02-0130-05)Front feet replacement tool(Allen wrench) (1) (W01-0084-05)FM indoor antenna (1) (T90-0841-05)RD-VH72CONTENTS / ACCESSORIESCONTENTS / ACCESSORIES.2DISASSEMBLY FOR REPAIR.3BLOCK DIAGRAM.4CIRCUIT DESCRIPTION.5CD MECHANISM DESCRIPTION.11ADJUSTMENT.14PARTS DESCRIPTIONS.15PC BOARD.16SCHEMATIC DIAGRAM.19EXPLODED VIEW.29PARTS LIST.31SPECIFICATIONS.Back coverContentsAccessoriesOperation to resetThe microcomputer may fall into malfunction (im-possibility to operate, erroneous display, etc.)when the power cord is unplugged while power isON or due to an external factor. In this case, ex-ecute the following procedure to reset the micro-computer and return it to normal condition.RD-VH7Unplug the power cord from the wall AC outletand, while holding the “7stop” key depressed,plug the power cord again. CRIf a CD has been loaded in the unit, it will beejected automatically.CRPlease note that resetting the microcomputerclears the contents stored in it returns it to conditionwhen it left the factory.System configurationSYSTEMCD CASSETTESPEAKERNAMERECEIVERDECKVH-600RD-VH7-LS-VH7VH-700RD-VH7X-VH7LS-VH7RD-VH7(K) COVER1,1P( 99.10.30 2:43 PM yW3RD-VH73DISASSEMBLY FOR REPAIRREMOVE CD MECHANISMAfter remove insulator ass'y, then remove some LR side board.Next remove the top and the bottom boards.1) Remove the 6 screws1, then remove the front panel.2) Remove the 6 screws23, then remove the CD mechanism.When assemble the front panel, insert the phone jack with tak-ing care4.ELECTRIC CHECKAfter assemble the sub panel and the front panel.1) Remove the 8 screws 5, 6, then remove PCB(X09:B/4), PCB(X14:A/6).2) Remove the 2 screws 7, the 3 PC supports8, then remove the CD mechanism.3) After assemble PCB (X09:B/4) on the main PCB with the rear panel. then connect GND between the rear panel , the anten-na and the CD mechanism with 3 alligator clip wires(0).HRemove the MULTI CONTROL knob with a string(wires etc)-.121x2x442233367711(X14)(A/6)MAINPCB(X09)8x35x35x25 91010106(X09)(B/4)RD-VH7(K) COVER1,1P( 99.10.30 2:43 PM yW6RD-VH74BLOCK DIAGRAMHEADPHONEJ312VAVRTUNERPACKAM,FMANTENNAFANX-Y POSITIONN.B.BASSTRE.THERMAL SWBIAS Cont.LEVEL SENSORPROTECTION(TILT)SENSORSTK499-090MAIN AMP.Cont.SYSTEMTAPE PLAYMD RECTAPE RECT.MUTEJ1TONESELECTORREC OUTA1J1Q1-3IC2ATTINPUTVOLUMEMASTERIC3BU4066BCFA.MUTEIC1K3K2J5J2Q1,2Q7,8IC8Q5,6,10PH1-4M30622MC-570FPMAIN u-COMLEDTACT KEYM.C/ENCODERREMOCONSENSORS2-13S1A2D11,12DISPLAY u-COMHD6433297A17FLCD ASS'YIC4IC5-13VAVR-10VAVRFAN+BAVR+6.3VAVR+5VAVR+5.6VAVR+5.6VAVRMUTEQ12CD MECHA DRIVERFANLCDMUTEBIAS CHANGETUNER PACKAUDIOCDMECHA SENSORLCDDISPLAY u-COMLEDu-COMAMP. +BAMP. -BQ20Q33Q17Q23-26IC10IC6Q22Q28DSP/DACSERV0RF AMP5ch BTLDISCSENSORD10D11D18K1T1BACK UP TRANS.MAIN TRANS.DIGITALDIGITALANALOGIC400IC401IC402MPICKUPMMOTORDISCSLEDMOTORD1-4,Q1-4S1CD SLOT INMECHANISM (CDM-34)200mV/100REC OUT200mV/47KINPUT9.5V/6SP.OUTPUT (2CH)S.W. OUTSPEAKERLC75396NEIC403A4MD PLAYAUXOPTICALOUT(+5V)RDSAC INLOADINGMOTORM+A-DRD-VH7(X14) (X09)(X14)RD-VH7(K) COVER1,1P( 99.10.30 2:43 PM yW71. INITIAL SETTING1-1 INITIAL CONDITIONS(1) AMPPOWEROFFPROTECTIONNO DETECTEDMUTEOFFSELECTORTUNERVOLUME15BALANCECENTERNB2BASS0TREBLE0MD INPUT0 (-6dB)TAPE INPUT0 (-6dB)AUX INPUT0 (-6dB)MULTI WINDOWAUTO(2) TUNERBANDFMPch MEMORYREFER TO (5)LAST Pch LAST FREQ.LOWER LIMIT VALUE OFEACH BANDSAUTO/MONOAUTOAUTO PRESET (MEMORY)E ON THRUST RECEIVING MODEOFFRDS DISPLAYPS(3) CLOCK, TIMERCLOCKSTOP, AM 12:00PROG. 1,2ON TIMEAM12:00OFF TIMEAM12:00PLAY MODEPLAYSOURCETUNERPch01chREC MODETAPEO. T. T.OFF (AM7:00)TIMER OPERATION MODE OF FSLEEP TIMEROFF(5)A. P. S.OFF(4) CDPLAY MODETRACKREPEATOFFRANDOMOFFOPERATION MODESTOPTIME DISPLAYSINGLE TIME(5) TUNER PRESET FREQUENCYchTUNER DESTINATIONE1K1E31FM97.5MHzFM97.5MHzFM97.5MHz2FM87.5MHzFM87.5MHzFM87.5MHz3FM89.1MHzFM89.1MHzFM89.1MHz4FM108.0MHzFM108.0MHzFM108.0MHz5FM90.0MHzFM90.0MHzFM90.0MHz6FM87.5MHzFM87.5MHzFM87.5MHz7FM87.5MHzFM87.5MHzFM87.5MHz8FM87.5MHzAM1610KHzFM87.5MHz9AM1602KHzAM1700KHzAM1602KHz10AM999KHzAM1000KHzAM999KHz11AM630KHzAM630KHzAM630KHz12AM1440KHzAM1440KHzAM1440KHz13FM106.0MHzFM106.0MHzFM106.0MHz14AM531KHzAM530KHzAM531KHz15FM87.5MHzFM87.5MHzFM87.5MHz16FM98.0MHzFM98.0MHzFM98.0MHz17FM98.5MHzFM98.5MHzFM98.5MHz18FM87.5MHzFM87.5MHzFM87.5MHz19AM990KHzAM990KHzAM990KHz20FM97.7MHzFM97.4MHzFM97.7MHz21AM531KHzAM530KHzAM531KHz22FM87.5MHzFM87.5MHzFM87.5MHz23FM87.5MHzFM87.5MHzFM87.5MHz24FM87.5MHzFM87.5MHzFM87.5MHz25FM87.5MHzFM87.5MHzFM87.5MHz26FM87.5MHzFM87.5MHzFM87.5MHz27FM87.5MHzFM87.5MHzFM87.5MHz28FM87.5MHzFM87.5MHzFM87.5MHz29FM87.5MHzFM87.5MHzFM87.5MHz30FM106.0MHzFM106.0MHzFM106.0MHz31FM87.5MHzFM87.5MHzFM87.5MHz32FM87.5MHzFM87.5MHzFM87.5MHz33FM87.5MHzFM87.5MHzFM87.5MHz34FM87.5MHzFM87.5MHzFM87.5MHz35FM87.5MHzFM87.5MHzFM87.5MHz36FM87.5MHzFM87.5MHzFM87.5MHz37FM87.5MHzFM87.5MHzFM87.5MHz38FM87.5MHzFM87.5MHzFM87.5MHz39FM108.0MHzFM108.0MHzFM108.0MHz40AM999KHzAM1000KHzAM999KHz2. BACKED UP ITEMSAC POWER OFF(1) AMPPOWERBACK UPPROTECTIONCANCELLEDMUTEOFFSELECTORBACK UPVOLUMEBACK UPBALANCEBACK UP5RD-VH7CIRCUIT DESCRIPTION1p 99.10.30 3:08 PM yW16RD-VH7CIRCUIT DESCRIPTIONNB2BASSBACK UPTREBLEBACK UPMD INPUTBACK UPTAPE INPUTBACK UPAUX INPUTBACK UPMULTI WINDOWBACK UP(2) TUNERBANDBACK UPPch MEMORYBACK UPLAST PchBACK UPLAST FREQ.BACK UPAUTO/MONOBACK UPAUTO PRESET (MEMORY)BACK UPE ON THRUST RECEIVING MODEBACK UPRDS DISPLAYPS(3) CLOCK, TIMERCLOCKPOWER FAILURE MODEPROG. 1, 2ON TIMEBACK UPOFF TIMEBACK UPPLAY MODEBACK UPSOURCEBACK UPPchBACK UPREC MODEBACK UPO. T. T.BACK UPTIMER OPERATION MODEBACK UPSLEEP TIMEROFFA. P. S.BACK UP(4) CDPLAY MODETRACKREPEATOFFRANDOMOFFOPERATION MODESTOPTIME DISPLAYSINGLE TIME3. CONDITIONS ACCORDING TOTHEDESTINATION( ) SIGNIFIES PIN NUMBER OF u-COM(X09, IC4)4. LCD INDICATION5. How to Set the Test Modes5-1 AUX(MD/TAPE/AUX)Setting: Insert the power cord to the wall outlet withpressing the MODE key.Cancel: Press any key of operation.A part A of display shows destination().“standby“ LED lights orange and green color alternatelyin this test mode.A part E of display shows as follows after selecting MDmode. 5-1-1 Display Contrast SettingDisplay contrast is available in LED and all segments ofdisplay lighting Contrast is set to initialization if cancel test mode.5-1-2 Mute SettingMuting function is available by pressing AUTO/MONOkey.5-1-3 AUX IN Level SettingSelect the level of aux input from +3, 0, or -6 by pressingthe FB key.Multi control knob is available for same setting aftermode key is pressed.5-1-4 Noise Blanker SettingSelect the level of NB from NB1,NB2 or NB OFF bypressing the SKIP DOWN key.5-1-5 BASS/TREBLE settingSelect the level of tone from tone max, tone flat or tonemin by pressing the BAND key.Display shows as follows.Multi control knob is available for same setting aftermode key is pressed.selectordisplay Edisplay AMDMD#TEST-TYPE#TAPETAP#TEST-TYPE#AUXAUX#TEST-TYPE#=spacekeyremarksFFcontrast min.skip upinitializationplay/pausecontrast max.display Adisplay Bbass treble valuevaluetone max.BASS/TER#MAX+8+8tone min.BASS/TER#MIN-8-8tone flatBASS/TER#CENTER00DESTI-u-COMDSWRECEIVINGCHANNELNATIONDESTI-NATION2(72PIN)1(71PIN)0(70PIN)BANDFREQUENCY RANGESPACEIFRFJJ010FM76.0MHz 87.5MHz100kHz-10.7MHz25kHz87.5MHz108.0MHz50kHz-10.7MHz25kHzAM531kHz1629kHz9kHz+450kHz9kHzK,PK1000FM87.5MHz108.0MHz100kHz+10.7MHz25kHzAM530kHz1700kHz10kHz+450kHz10kHzME1001FM87.5MHz108.0MHz50kHz+10.7MHz25kHzAM531kHz1602kHz9kHz+450kHz9kHzE,TE3110FM87.5MHz108.0MHz50kHz+10.7MHz25kHzRDSAM531kHz1602kHz9kHz+450kHz9kHzPARTS OFF LCD INDICATIONA PARTB PARTC PARTD PARTE PARTPROG 1 2OTT APSRADIO T1p 99.10.30 3:08 PM yW27RD-VH7CIRCUIT DESCRIPTION5-1-6 Balance SettingSelect the level of balance from L-ch, max, R-ch max orcenter by pressing the MODE key.Multi control knob is available for same setting aftermode key is pressed.5-2 TUNERSetting: Insert the power cord to the wall outlet withpressing the BAND key.Cancel: Press any key of operation.A part E of display shows RADIO T. “standby“ LED lights orange and green color alternatelyin this test mode.5-2-1 Dimmer SettingDimmer is available in LED and all segments of displaylightingSelect the on/off of dimmer from dimmer on or dimmeroff by pressing the CD/PLAY/PAUSE key.Dimmer is set to OFF if cancel test mode.5-2-2 P.CALL SettingSelect the step of p.call from 10,20, - 40 or 01(10steps)by pressing the MODE key.5-2-3 P. CALL Up/Down SettingThis setting is available by P.CALL UP/DOWN key.5-2-4 Normal Mode (AUX/TUNER)This setting is available by pressing MODE key for 1.5secs .CD eject works except tuner mode.5-3 Sub Clock Oscillation CheckSetting: Insert the power cord to the wall outlet withpressing the INPUT key.Cancel: Press any key of operation. However continuetuner test mode.Display lights if oscillation and period are ok. Displayshows ERR1(oscillation) or ERR2(period) and stop tocheck after 5 time checks.5-4 CDSetting: Insert the power cord to the wall outlet withpressing the PLAY key.Cancel: Press any key of operation. However a part B ofdisplay is only cancel.A part A of display shows mechanism sensors. Discloading sensor/8cm sensor/12cm sensor/down switch inorder. Display shows “-“ at first time.A part B of display shows CD-TEST LED is blanking.5-4-1 Mechanism Sensor CheckDisplay shows from “-“ to “0“ or “x“ after loading thedisc. “0“ means sensor works.“x“ not works.5-4-2 Adjusting5-4-3 Pickup Movement5-4-4 Initialization in Test ModeCD stop to playback. Display B shows 0100:005-5 Factory Test Check5-5-1 Initial OperationSetting: Insert the power cord to the wall outlet withpressing the AUTO/MONO key.Cancel: Turn power off.1. Check sub clock oscillation. Display lights for 2 secs. If noproblem.2. Display A shows destination. 3. Display A shows sensor's condition with H or L after anykey is pressed.5-5-2 Display CheckDisplay's dots light on or off by pressing MODE key.Back light is always on.5-5-3 Slot Check6. InitializationSetting: Insert the power cord to the wall outlet withpressing the STOP key.Initialize amplifier section(preset,time reset and RAM)after CD mechanism initialization.Turn unit to standby mode.Display shows INITIALIZE for check time.Display shows CD EER if any trouble.7. Cancel of Test ModeInitialized and cancel test mode if pulling out power cord.Not initialized and cancel test mode if the power switchturns off.Turn normal mode if pressing STOP key in stopcondition of CD test mode.8. Common Operation in Test Mode1. Volume level is 40 at every test mode start up.2. No muting with switching test mode. But muting-on ifpower switch on/off.3. AUX test mode is available for selecting MD,TAPE, orAUX4. Initialize setting value or condition if pull out the powercord.5. AUX IN LEVEL is initialized to +3(0dB).6. Input key is available for switching test modeitem,tuner,cd, MD, tape and aux.keydescriptionCD PLAY/tracking servo on/offPAUSEdisplay B shows 05:if servo ondisplay B shows 03-:-ifservo offskip uphorizontal or vertical position choice display B shows 05V:in horizontal mode(servo gain and tracking bias)keydescriptionFFslot in operation. Display B shows LOADFBslot out operation. Display B shows UNLOAD.keydescriptionFFpickup travels outwards and display B shows OUTSIDE.FBpickup travels inwards and display B shows INSIDE.1p 99.10.30 3:08 PM yW3RD-VH7CIRCUIT DESCRIPTION89. Common Operation in AUX/TUNER TestMode9-1 Bias and Main Volume LevelSet unit to aux or tuner test mode.Select the proper value with CD PLAY/PAUSE or CDSTOP key.Multi control knob is available for same setting aftermode key is pressed.9-2 FAN OperationDisplay C shows fan condition.volumebiasdisplay D0pure A lowPURE#A#L1pure A lowPURE#A#L20pure A midPURE#A#M40pure A highPURE#A#H80pure B lowPURE#B#LFANDisplay CoffFAN#OFF#lowFAN#low#highFAN#Hi#10. MICROPROCESSOR ; M30622MC-570FP(X09,IC4)10-1 MICROPROCESSOR PERIPHERY BLOCK DIAGRAMKEY MATRIX* REFERENCE VOLTAGE: 5.0VCD ASPLA9241MCD MECHA. CDM-34TUNER UNIT(RDS DECODER)E/T ONLYRELAY (PWER, SP, HP)DISPLAY u-COMHD6433297A17FSL16LCD DRIVERSED1565LCDREMBACK UPFANBIASMUTINGPROTECTIONREC OUT SELLEDKEYCD DSPLC78628ESYSTEM ICLC75396NEX09, IC400X09, IC401X09, IC2X09, IC4X09, IC5M30622MC-570FPENCODERAUDIO LEVELDESTINATIONTILT SENSORHEADPHONES DETECTORVOLTAGE0.0001.0611.0611.7261.7262.4372.4373.1563.1563.8273.8274.5864.586KEY189PINMODEPOWER KEYOFFKEY290PINSTOPSKIP DOWNPLAY/PAUSEINPUTBANDKEY OFFKEY391PINSKIP UPEJECTTUNING UPTUNINGDOWNAUTO/MONOKEY OFF1p 99.10.30 3:08 PM yW4RD-VH7CIRCUIT DESCRIPTION9Pin No.Pin NameI/ODescriptin1RELAY HPOHeadphones relay control terminal.2RELAY SPOSpeaker relay control.3DISP_RSTOReset for communication between display u-COM and u-COM(IC4).4DISP CEOChip en