Kenwood-RXD-790-Service-Manual电路原理图.pdf

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1、MINI HiFi COMPONENT SYSTEMRXD-790/V860/V890SERVICE MANUAL(XD-790/V860/V890)1997-9/B51-5357-00 (K/K) 15863721O.T.E.DUBBINGREC/ARMDOLBY NRREV. MODEA/B0CRPUSHOPEN0CRPUSHOPEN0674DISCSKIPDISC SELECTORTIME DISP.OPEN/CLOSEDISC1DISC2DISC3DOWNUPCLASSICEQ.OFFEX.BASSSTEREOSRS 3DPRO LOGICDOLBY3 STEREOMODEINPUTD

2、ISPLAYBEST HITSDEMOAUTO POWERSAVEMIC MIX. MIN. MAX.MIC1MIC2PHONESON/STANDBYAUTOENTERBANDPOPROCKM/RRESETMINI HiFi COMPONENT SYSTEMMULTI CONTROL/VOLUMETUNINGFront glass(B10-2391-02)Panel(A60-1245-11)Knob(K29-6864-03)Knob*(K29-)Knob(K29-6759-12)Front glass(B10-2282-12)Cassette lid(A53-2019-12)Knob(K29-

3、6866-02)Lighting board(B19-1563-13)Knob(K29-6863-03)Knob(K29-6832-13) Phone jack(E11-0280-05)Knob(K29-6832-13)Knob (K29-6865-02)Knob(K29-6832-13)Knob (K29-6865-02)Front glass(B10-2283-12)Cassette lid(A53-2020-12) Knob(K29-6861-04)Illustration is RXD-790.* Refer to parts list on page 62.KENWOOD-Corp.

4、 certifies this equipment conforms to DHHS Reg-ulations 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 reproduc-tions of labels on, or inside the product relati

5、ng to laser productsafety.RXD-790/V860(k) COVER( 97.11.28 3:55 AM yW2RXD-790/V860/V8902CONTENTS / ACCESSORIESContentsAccessoriesRemocon configurationSystem configurationCONTENTS / ACCESSORIES.2EXTERNAL VIEW.3DISASSEMBLY FOR REPAIR.4BLOCK DIAGRAM.5CIRCUIT DESCRIPTION .6ADJUSTMENT.13WIRING DIAGRAM.17P

6、C BOARD .19SCHEMATIC DIAGRAM.31EXPLODED VIEW.59PARTS LIST.62SPECIFICATIONS.75Please confirm that the following accessories are present.FM indoor antenna.(1)(T90-0801-05) Loop antenna .(1) (T90-0820-05)AM loop antenna stand .(1)(J19-3645-05)Speaker cords.(2)(E30-5120-08)Remote control unit .(1)(A70-1

7、160-05) : RXD-790.RC-790(A70-1161-05) : RXD-V860.RC-V860(A70-1162-05) : RXD-V890.RC-V890Speaker stabilizer.(8)(G11-2345-04)Battery cover (A09-0380-08)Batteries (R6/AA) .(2)AC plug adapter.(1)(E03-0115-05)REMOTE CONTROL UNITN.B.SLEEPINPUTDISC SKIPO.T.E.REPEATRANDOMEDITP. MODEBANDP. CALLCDTUNINGPTYTAP

8、EA/BTA/NEWS/INFO.RDSDISPLAYEX.BASSSRS 3DAUTOVOLUMEEQ.PTYSEARCH1 2 34 5 67 8 90 +10MUTEPART NAMEMODEL NAMEA70-1160-05RXD-790A70-1161-05RXD-V860A70-1162-05RXD-V890SYSTEMMAIN UNITSPEAKERSPEAKERXD-790RXD-790LS-N850CRS-N850XD-V860RXD-V860LS-N850XD-V890RXD-V890LS-N850CRS-N850RXD-790/V860(k) COVER( 97.11.2

9、8 3:55 AM yW3RXD-790/V860/V8903EXTERNAL VIEWANTENNAAMFM300FM75GNDRLAUXINPUTRLAUXOUTPUTSUPERWOOFERPRE OUTFRONTSPEAKERS(6-16)SURROUNDSPEAKERS(8-16)CENTERSPEAKER(8-16)+-AC220-240VAC110-120VRL+-+RL+-+Metallic cabinet(A01-3532-01)Lock terminal board(E70-0057-05)Lock terminal board(E70-0054-05)Lock termin

10、al board *(E70-0057-05)Lock terminal board(E20-0476-05)Phono jack(E63-1001-05)Phono jack(E63-0200-05)Slide switch(S62-0001-05) Power cord bushing(J42-0083-05)AC power cord *(E30-)Illustration is RXD-790.* Refer to parts list on page 62.RXD-790/V860(k) COVER( 97.11.28 3:55 AM yW6RXD-790/V860/V8904DIS

11、ASSEMBLY FOR REPAIRHRemove main PCBs, then connect betweenPCB GND and chassis with alligator clip.1. How to remove the main PCB.(1) Remove the 4 screws 1.(2) Remove the 9 screws 2.(3) Lay the rear panel with left side downward on thesmall box .2. How to remove the front panel.(1) Remove the 3 screws

12、 1.(2) Remove the 5 screws 2.HRemove the deck mechanism only with the fixedframe on the panel.3. How to remove CD mechanism(After remove the front panel)(3) Remove the 5 screws 3, then remove CD mecha-nism(4) with the laid set.(4) Assemble the front panel then check (+) position.HConnect between vid

13、eo out terminal GND and unitchassis with alligator clip.A111A 2222 2x2x4x3122222x2453x233RXD-790/V860(k) COVER( 97.11.28 3:55 AM yW7(X08)(X09)RXD-790/V860/V890(X32)(X09)(X14)T25-0050(CDM-27)MECHA. A,B(X28)(X05-466) (K,M,X)(X05-475) (V)SUR.20V/8C ch S ch20V/8(X05) (X08)AUDIO OUTOTHER CH24.5V/617.2V/6

14、FRONT2ch5V9VRFD.P.S.SHIGH SPEEDREC SIGNALXLON MDP SPOBL,RLED A,BSOL-MOTOR-MOTOR B MOTOR AP.H A,BVR5,6A PBB R/PIC DATA1E STB IC DATA IC CLKRM:ON/OFFP/RNR:ON/OFFBIAS:ON/OFFB:120/70A:120/70A/BBIAS SW580mV 0dBSPB OUTREC INPASS DCLRECPBVR3,4REC OUTBIAS TRAP B PB AMPLEVELVR7,8 APBIC2A PB AMP-22dBS60mVB ER

15、ASESRCOFFON TAPE TUNER CD AUXAM:180mV/3.3k FM:600mV/3.3k TUNER OUTPUTIC4BA3126N70u 120uB ABPBLEVELVR1,2IC3RXD-790/V890PRE OUTRXD-790/V890RXD-790/V890RXD-V860/V890RchSEL/75 1Vp-p2V/1kCSSIC10IC7SUR. 2ch200mV/1.1k AUX OUTAUX OUTMUTEATT ATTMUTEPAL/NTSCEHPASISMECHA.A,BMUTEATTIC3(1/2)IC6(1/2) IC6(2/2)IC3(

16、2/2)OUT VIDEOIC5IC4IC8(AC10V)Q13,14D12AVR(W02)CD VIDEOIC7P/CEXPANDERSERE PARA.IC9 DACPCMIC14IC10u-COM VIDEO-CDIC5IC2IC1DOLBYLOGIC PROE-VOLQ1Q9Q2Q10- +CENTER SPQ1,2Q3,4IC3EXPANDERAVRQ61AVRQ60,63Q56AVRAVRMUTEQ7-10Q10,11IC1 HA12209FMSIC2IC1MAINu-COMA1ED1SENSOR REMOTEFL DISPLAYSPEANAPOWER SUPPLYFINALTR-

17、12VD28D25,26D20-30V12V5.6VIC9ACAMP MAINQ5-16SP.OUTPUTWOOFER SUPERPHONESSURROUNDSP.+ - -R LSP. MAINR L+ - - +IC5N.B GE. CANCEL VOICE VOL. ELECTRICIC2-4SRS5V u-COM MOTOR12V DSP5.6VSW1-SW5P/CIC6CONTROLDSP POWERDRIVER MUTERESETIC2CXD2500BQ DSP/DACIC1RF AMP/SERVOCXA1782BQLA6537IC9LD SWCONTROLNJU3713D S/P

18、ROTARY MOTOR SPEED CONTROLL.MDRIVER LOADING ROTARYDRIVERR.MTRAVERSE UNITD40-1500STARTLIMIT SWFOCUSTRACKINGCONTROL DRIVER GAINIC34ch BTL DRIVERD.MDRIVER DISC MOTOR DRIVER FEED MOTORF.M COILDRIVER TRACKING COILCOILFOCUS COILDRIVERLDSWQ5LDF ECB AIC5BA10393Q3,4 Q1,2IC6NJU3714DMS MAIN+5VOUTL1MPXL.P.F.CHA

19、NNEL OTHERDOLBYQ5CONTROL BIASBEAT CANCELQ7,8OSC BIASAUX INAUX IN200mV/47kMIC1,21.6mV/2.2k MICINPUTSEL.IC1VR1IC8IC7MICECHOMIXINGIC6(2/2)MIC AMPIC6(1/2)BLOCK TUNERRXD-790 (X32) : Refer on page5 (X32) of RXD-500/700 servi manual (B51-5300-05)RXD-V860 (X092) : Refer on page5 (X09) of RXD-500/700 servi m

20、anual (B51-5300-05)(X08) : Except RXD-V860RXD-790/V860/V8905BLOCK DIAGRAMRXD-790/V860(k) COVER( 97.11.28 3:55 AM yW10RXD-790/V860/V8906CIRCUIT DESCRIPTION1. Initialization1-1 Setting of initial conditionsWhile pressing the ENTER key, plug the AC cord into the AC power outlet.1-2 Initializing operati

21、onA microcomputer is initialized for start when the AC power is turned on while pressing the ENTER key. At that time, CDmechanism are also initialized.During the initial operation, the display shows “INITIALIZE”and after that the clock blinks up on display.1-3 Initial items and back up dataITEMSH PO

22、WEROFFH VOLUME15H BALANCECENTERMUTINGOFFH EQOFFH EQ. MANUFLATAMPH EX. BASSONH SRS 3DOFFH INPUT SELTUNERH AUX INPUT0 (-6dB)H REC LEVEL-17N. B.OFFECHONONEOFFH 3D LEVEL0H REF/MANUREFH DEMOONH D-SURROUNDOFFNONEH D-3STEREOOFFNONEH CENTERNORMALNONEH CEN LEVEL0 (-10dB)NONEH SUR LEVEL0 (-10dB)NONEITEMSH BAN

23、DFMH LAST fLIMITTUNERH LAST Pch H AUTO/MONOAUTOH PchTEST fH CLOCKAM 12 : 00H PROG ONAM 12 : 00CLOCKH PROG OFFAM 12 : 00TIMERH PRO MODEPLAYH SOURCETUNERH Pch1H EXEOFFH OTTOFFSLEEPOFFH DIRECTIONFORWARDH RVS MODEpDECKH DOLBY NROFFA/BBACTIVE MODESTOPPLAY MODETRACKREPEATOFFCDRANDOMOFFPLAY MODESTOPTIMESIN

24、GLEH A/NTSC/PALNONEAUTOVIDEO-CDAUTO PBCNONEONDIGESTNONEOFFMEM STOPNONEOFF1-4 Mechanism initialization1-4-1 CD mechanismDisc unclamps (traverse down)Rotary tray rotates (1/3 rotation)If a mechanism error occurs, “C”is indicated on the display.1-4-2 DECK mechanismWhen initial condition becomes NG for

25、the third time, decide the error.The error condition is displayed as “X“ on the display.1-4-3 Error displayC ERR or X ERRH back up dataRXD-790/V860(k) COVER( 97.11.28 3:55 AM yW11RXD-790/V860/V8907CIRCUIT DESCRIPTIONDesti-DSWReceiving frequencyChannelPORTnation3(D23)2(D22)1(D21)0(D20)BandrangespaceI

26、FRF47K10000FM87.5MHz108.0MHz100kHz+10.7MHz25kHz0AM530kHz1700kHz10kHz+450kHz10kHz0K20001FM87.5MHz108.0MHz100kHz+10.7MHz25kHz1AM530kHz1610kHz10kHz+450kHz10kHz0E10011FM87.5MHz108.0MHz50kHz+10.7MHz25kHz0AM531kHz1602kHz9kHz+450kHz9kHz05. Test mode5-1 Test mode of the receiver5-1-1 Setting of the test mod

27、eWhile pressing the INPUT key or Band key, plug theAC power cord in AC outlet.5-1-2 Canceling of the test modeUnplug the AC power cord.5-1-3 Condition in test modePOWER ONSELECTOR AUX (in case of INPUT key)TUNER (in case of BAND key)FL, LED All the fluorescent display indicatorsand LEDs light. (The

28、all illuminatedstate is cleared by pressing any mainunit key or remocon key.EX. BASS OFFREC LEVEL All position 0dB (REC 80)5-1-4 Sub clock osculation diagnosisSub clock oscillation be diagnosed OK and NG beforeinput test mode.ERR1 : OSC non activeERR2 : Frequency NG.5-1-5 All RAM clearWhile pressing

29、 3STEREO key or HIT MASTER key,plug the AC power cord into AC power output, the allRAM cleared.5-1-6 Basic operation in test mode.(1) The muting during mode selection is not controlled inthe test mode.(2) The REC out level is fixed to 0dB (MAX).(3) The test mode is cancelled when the AC power isturn

30、ed OFF.(4) The operation of the keys in the test mode, as follows.5-1-7 The operation of the keys in the test mode.(1) DISP/DEMO keyWhen this key is pressed in the test mode, all the flu-orescent light off and normal display are indicatedcyclically.(2) DISC 13 keysWith the selector on AUX, when the

31、DISC 13 keysare operated, the 3D level settings can be made asfollows.1DISC 1 3D ON level -10 (Min)2DISC 2 3D ON level 0 (Center)3DISC 3 3D ON level +10 (Max)4. Destination list of tunerDIODE SW :0 = Without diode (When static, input low)I = With diode (When static, input high)2. KEY MATRIX3. TUNER

32、preset frequencyRefer to RXD-500/700 service manual (B51-5300-00), if need TUNER preset frequency K1 and K2.KR0KR1KR2KR341424344KEY197 PINB PACKB PLAYSTEREOF RECKEY296 PINA PACKA PLAYSDR RECKEY3 95 PINPOWERA/B/BEATCINPUTPOPKEY4 94 PINEQ. OFFMANU/REFCLASSICROCKKEY5 93 PINDSW3DSW2DSW1DSW0KEY6 92 PINTE

33、ST (RDS)DSW6DSW5DSW4KEY7 90 PIN (CD)DISC SKIP6 (CD)OPEN/CLOSWKEY8 89 PINTIME DISP4 (CD)7 (CD)DISC3KEY9 88 PIN7 (DECK) (DECK) (DECK)“ (DECK)KEY10 87 PINOTE (DECK)DUBBINGREC/ARM1 (DECK)KEY11 86 PINDISC1REV MODEDOLBY NRDISC2KEY12 85 PINTUNING UPBANDAUTOBEST/ECHO/AKEY13 84 PINSRS 3D3 STEREOENTERMODE/OTT

34、KEY14 83 PINRESETEX.BASS/PRGDISPLAYSTEREO/BESTKEY15 82 PINTUNING DOWNPRO LOGICNo. of : Port No. of (X14)IC1 u-COM.RXD-790/V860(k) COVER( 97.11.28 3:55 AM yW14RXD-790/V860/V8908CIRCUIT DESCRIPTIONPLLLC72131EXPANDER ICNJU3711 EXPANDER ICNJU3714DCD MECHANISMUNITCDM-27 DECK MECHANISMGT-E5000SYSTEM ICHA1

35、2209FPARALLEL-SERIALTC74HC166APSELECTORNJU7313SYSTEM ICLC75393EKEYMATRIX13SCAN 4RETURNSPEANABA3834SSTBRECEIVER SECTIONIC_CLK/DATACEPHGRID (10)(X14) IC1(X14) IC2(X32) IC2(X32) IC6(X28) IC1(X28)IC6(X32)IC5(X14) ED1(X09) IC1(X09) IC5(X05) IC2SEGMENT (42)POWERMUTEST. CLEARM38199MF-069FPM38198MCA-807FPFI

36、P10HMW6RCD DSPCXD2509QFLMAINu-COMCDDECKEXPANDERSERI PARAEXPANDERSERI PARAPRO LOGICDOLBYC,S VOL.SEL.ST P.LOG. VIDEO CD-COMVIDEO CD(W02-)CD MECHANISM(CDM-27)DAC4ch BTLRF SERVODSP(X32) IC2 (X32) IC1 (X32) IC24ch BTL(X32) IC3RF SERVO(X32) IC1(X32) IC14 (X32) IC10(X32) IC6,7,9, CD/VIDEO CD(X08) IC7 (X08)

37、 IC4 (X08) IC2 (X08) IC1DOLBY PROLOGIC(X14) IC5(3) CD STOP keyWith the selector on TUNER, when the CDSTOPkey operated, the preset memory can be changedas 10 steps.10 20 30 40 00 ( )(4) AUTO, TUNING UP/DOWNWith the selector on something other than TUNER,the E.Q (Flat, Min, Max) settings can be made b

38、ypressing the AUTO key and the tuning UPDOWN keys.AUTO key E.Q FlatTUNING DOWN keyE.Q MinTUNING UP key E.Q Max(5) CD SKIP UP/DOWN keysWith the selector on TUNER, the P. CALL is operat-ed by pressing the skip UP/DOWN keys.SKIP UP key P.CALL upSKIP DOWN key P. CALL down(6) CD OPEN/CLOSE keysWith the s

39、elector on TUNER, the channel space(emphasis) settings can be mad cyclically by press-ing the OPEN/CLOSE keys with E1 and K2 version.(7) Other keysDuring the test mode, it can be operated in a specialmanner that is different from an ordinary operationby using the keys on the main body, specifically

40、asshown in the following table.TAPEKEYINDICATIONOF VOL.VALUEPress mode key in the AUX mode1 time2 timesBALANCEINPUT LEVELRVS MODE1L-13DOLBY NR44 (MID)CENTER-4A/B86 (MAX)R+2DUBBING-8O.T.E-36. Main microprocessorM38198MCA-807FP (X14: IC1) : RXD-790M38199MF-069FP (X14: IC1) : RXD-V860/V8906-1 Microproc

41、essor periphery block diagramOPERATION KEYDISCRIPTIONCD CENTER LEVEL UPCD 4CENTER LEVEL DOWNTAPE REAR LEVEL UPTAPE 1REAR LEVEL DOWNRXD-790/V890RXD-790RXD-V860RXD-V890CDOCD/VIDEO CDOODOLBY PROLOGICOORXD-790/V860(k) COVER( 97.11.28 3:55 AM yW15RXD-790/V860/V8909CIRCUIT DESCRIPTIONPin No.I/ONameDescrip

42、tion1IBP-INSpeana input (A/D convertor input)2ICWRotary encoder input B3ICCWRotary encoder input A4IA-PHA photo sensor input5IB-PHB photo sensor input6IHEAD PHONEHead phone sw inputH : ON L : OFF7ODOLBY STSurround IC(LV1016/LA2786) strobe8I/OSEL STSelector IC(NJU7313) strobe9OIC-DATASelector/PLL/E.

43、Volume/Expander IC (data)10OIC-CLKSelector/PLL/E. Volume/Expander IC (Clock)11OE STExpander IC (NJU3711/NJU3713/NJU3714) strobe12OSANYO CESystem IC(LC75393(/PLL(LC72131)/E. vol(LC7536) CE13IPLL DOPLL data input14ODAC STDAC(PCM1717E) strobe15OC BUSYVCD busy output16OVCD CLOCKVCD clock17OC DATAVCD dat

44、a output18IM DATAVCD data input19OCD-CLKCD DSP clock (CXD2509Q)20OSQCKSub cord clock(CXA 1782BQ, CXD2509Q)21OCD-DATACD IC DATA22ISUBQSub code data23OCD-XLATCD latch output (CXA1782BQ, CXD2509Q)24ISENSECD sense input (CXA1782BQ, CXD2509Q)25OPS-LOADParallel serial IC loadH : ShiftL : Load26IPS-SINPara

45、llel serial IC data27OE. VOL ATTE. Vol attenuationH : ONL : OFF28OIC-CLRExpander IC resetH : NormalL : Reset29ICEPower failure inputH : AC ONL : AC OFF30ISCORSub code synchronism signal (CXD2509Q)31OA MUTEMute controlH : OFFL : ON32IREMRemote control input33IPROTECTProtection inputH : ProtectL : Nor

46、mal34IM BUSYVCD board u-COM busy input35IRESETResetH : Normal L : Reset 36IXcinTimer clock input/output(32.768kHz)37OXcout38IXinMain clock input/output(8.38MHz)39OXout40Vss(GND)4144IKR0KR3Key return 03H : ON4554O1G10GFL grid 1G10G5573OSEG41SEG23FL segment SEG41SEG237476OSEG22/BP OUT3SEG20/BP OUT1FL segment SEG22SEG20/band pass control 317781OSEG19SEG15FL segment SEG19SEG1582 90OSEG14 / KEY15/SEG6/KEY7FL segment SEG14SEG6/Key scan K