Kenwood-RXD-751-Service-Manual电路原理图.pdf

《Kenwood-RXD-751-Service-Manual电路原理图.pdf》由会员分享，可在线阅读，更多相关《Kenwood-RXD-751-Service-Manual电路原理图.pdf（57页珍藏版）》请在收音机爱好者资料库上搜索。

1、321PLAY0PUSHOPEN0PUSHOPEN6774DISC SKIPDISC 1DISC 2REV.MODEDOLBY NRDISC 3VOLUMECONTROLUPDOWNSRS 3DTIMERDISPLAYEX. BASSMODE/DEMOENTERAUTOPHONESSETMAXMINSOUNDMULTI CONTROLON/STANDBYINPUTMICVOL.1MIC 2DUBBINGTUNINGBANDCD PGMMINI HiFi COMPONENT SYSTEMREC/PLAYA/BREC/ARM0SRS ( )MINI HiFi COMPONENT SYSTEMRXD

2、-501/501E/501W/551/551E/551W/571S/A5/RXD-701/701E/701W/751/751E/751W/771S/A8SERVICE MANUAL1998-3/B51-5420-00 (K/K) 3661Cassette lid (L)*(A53-) Phono jack(E11-0169-05) Phone jack(E11-0169-05)Front glass(B10-2446-13)Lighting board(B19-1587-03)Front glass*(B10-)Lighting board(B19-1589-04)Lighting board

3、(B19-1586-04)Panel assy*(A60-)Knob*(K29-)Cassette lid (R)*(A53-)Front glass(B10-2447-13)Panel (CD)*(A29-)(XD-501A8)* Refer to parts list on page 58.In compliance with Federal Regulations, following are reproduc-tions of labels on, or inside the product relating to laser productsafety.Refer to RXD-50

4、0/700 (B51-5300-00), If you requireTUNER preset frequency in detail.*Refer to page 2 if you want to know system configuration.KENWOOD-Crop. certifies this equipment conforms to DHHSRegulations No. 21 DFR 1040. 10, Chapter 1, Subchapter J.DANGER : Laser radiation when open and interlock defeated.AVOI

5、D DIRECT EXPOSURE TO BEAMPhone jack(E11-0280-05)RXD-501751(K) COVER( 98.4.23 21:42 yW2SYSTEMMAIN UNITSPEAKERSP CORDDESTI-PARTS NO.NATIONXD-501RXD-501LS-501E30-5474-08TEXD-501RXD-501LS-501E30-5475-05XXD-501WRXD-501WLS-501E30-5474-08QXD-501ERXD-501ELS-501E30-5474-08E2XD-551RXD-551LS-551E30-5475-05MXYX

6、D-551RXD-551LS-551E30-5474-08TEXD-551WRXD-551WLS-551E30-5474-08QXD-551ERXD-551ELS-551E30-5474-08E2XD-571SRXD-571SLS-551E30-5475-05M2SYSTEMMAIN UNITSPEAKERSP CORDDESTI-PARTS NO.NATIONXD-A5RXD-A5LS-451E30-5120-08KPXD-701RXD-701LS-701E30-5471-05TEXXD-701WRXD-701WLS-701E30-5471-05QXD-701ERXD-701ELS-701E

7、30-5471-05E2XD-751RXD-751LS-751E30-5471-05MXYTEXD-751WRXD-751WLS-751E30-5471-05QXD-751ERXD-751ELS-751E30-5471-05E2XD-771SRXD-771SLS-751E30-5471-05M2XD-A8RXD-A8LS-751E30-5471-05KPSystem configurationRXD-501/551/571/A5/701/751/771/A82CONTENTS / ACCESSORIESCONTENTS / ACCESSORIES.2EXTERNAL VIEW.3DISASSE

8、MBLY FOR REPAIR.4BLOCK DIAGRAM.5CIRCUIT DESCRIPTION.6ADJUSTMENT.13WIRING DIAGRAM.17WIRING DIAGRAM.17PC BOARD.19SCHEMATIC DIAGRAM.27EXPLODED VIEW.55PARTS LIST.58SPECIFICATIONS.Back coverContentsV O L U M ET A P ES E TE N T E RA / BC DT U N I N G P . C A L LM U T EM E N UR C - 7 0 1 RR E M O T E C O N

9、 T R O L U N I T1 2 304 5 6+ 1 07 8 9D I S C S K I PE X . B A S SS R S 3 DT I M E R A N D O M R E P E A T B A N DE Q O N / O F FI N P U TR D S D I S P . P T YT A / N E W S/ I N F O . P O W E RM U L T I C O N T R O LV O L U M ET A P ES E TE N T E RA / BC DT U N I N G P . C A L LM U T EM E N UR C - 7

10、0 1R E M O T E C O N T R O L U N I T1 2 304 5 6+ 1 07 8 9D I S C S K I PE X . B A S SS R S 3 DT I M E R A N D O M R E P E A T B A N DE Q O N / O F FI N P U TP O W E RM U L T I C O N T R O LAccessoriesFMIndoor antenna(T90-0801-05): KPXYMM2(T90-0836-05): TEQE2AC plug adaptor (1)(E03-0115-05)Use to ada

11、pt the plug on thepower cord to the shape of thewall outlet.(Accessory only for regionswhere use is necessary.)AM Loop antenna stand(J19-3645-05)Speaker cords (4)XD-A8/XD-7.SeriesSpeaker cords (2)XD-A5/XD-5.SeriesRemote control unit (1)(A70-1201-05) :KPMXYM2Battery cover (A09-0399-08)Remote control

12、unit (1)(A70-1202-05) : QETE2Battery cover (A09-0399-08)Batteries (R6/AA) Attached with tospeaker unitAM Loop antenna (T90-0833-05)Speaker cushion (8)RXD-501751(K) COVER( 98.4.23 21:42 yW3RXD-501/551/571/A5/701/751/771/A83EXTERNAL VIEWGNDLRLRSUB WOOFERSPEAKERS(12-16)FRONTSPEAKERS(6-16)AUXOUTPUTANTEN

13、NAFM300AUXINPUTAUXINPUTLEVELMIN.MAX.LRLRRSURROUNDSURROUNDSPEAKERS(6-16)L+ + +DIGITALOUTOPTICAL%ONOFFFM75AMFRONTSPEAKERS(6-16) SUPERWOOFERPRE OUTLR +LRAUXINPUTRXD-A5/RXD-5.SeriesRXD-A5/A8Phono jack(E63-1037-05) Phono jack(E63-1038-05)Lock terminal board*(E70-)Lock terminal board(E70-0048-05)Lock term

14、inal board(E70-0045-05)Power cord bushing(J42-0083-05) Slide switch(S62-0055-05)AC power cord*(E30-)Variale resistor(R31-0096-05)Oscillating module(W02-1114-05)Lock terminal board(E70-0057-05)Phono jack(E63-0116-05)* Refer to parts list on page 58.RXD-501751(K) COVER( 98.4.23 21:42 yW6RXD-501/551/57

15、1/A5/701/751/771/A84DISASSEMBLY FOR REPAIR1. How to remove the front panel.(1) Turn the power ON and then push the open/closekey to open the tray.(2) After removed the tray cover, push the open/closekey to close the tray and then turn the powerOFF.(3) Remove the push rivet (1) and 4 screws (2, 3).(4

16、) The front panel can be separated by removing the3 screws (4) located at the bottom plate of thefront panel.2. How to remove the CD mechanism (1) Remove 4 screws (5) on the left side/right side ofchassis.(2) Remove 2 screws (6) and the cap (7) on therear panel.(3) Disengage the CD mechanism as FIG.

17、2.3. How to open the tray if not comes out.(1) From the rear side of the CD mechanism, use ascrew driver or the like to turn the friction arm fullycounterclockwise.(2) Pull out the tray front wards by hand when thetray comes just out.* As for details of items in the below, refer to RXD-F3service man

18、ual (B51-5091-00).(1) How to detach the tray.(2) How to attach the tray.(3) Replacing the pickup.Fig.15233316 67x44x3REARSIDEFrictionArmFig.2RXD-501751(K) COVER( 98.4.23 21:43 yW7-490X-489XX05-471X(X09)-551 M,X-571 MRXD-501 XA,BX04-1313-80Q TYPE ONLYRXD-501/701(X32)(X14)(X14)T25-0050(CDM-27)MECHA.(X

19、28)TRDROUTNCDECKK12LD ONSRDRMDPFFDRFRDRDOLBY ON/OFFDOLBY R/PA,B PLAYR.RECF.RECA,B PACKA/BAUDIO OUTOFFONRFSFDRTFDRSSTPL,RLED A,BSOL-MOTOR-MOTOR BMOTOR AP.H A,BVR5,6DPSSPS LOADPS INIC CLKRM:ON/OFFBIAS:ON/OFFB:120/70A:120/70BIAS SW580mV0dBSPB OUTREC INPASSDCLRECPBREC OUT70u120uBAAUX OUTINCDDECKK2K1+-+-

20、TUNERAUXFANFROMOTHER CHHEADFAN DRIVERQ21-23SUBONLYRXD-701 SERIES(M,T,X,E,Q, TYPE)RXD-701RXD-501(M,X TYPE)S.P OUTPUT17.3V/6SERIESRXD-A5/RXD-5XXSERIESRXD-A8/RXD-7XX20.49V/624.49V/6RXD-501SERIES ONLY1.8V/3.3KJ2J2+B +L-+-RWOOFERSP.RELAY+BK11FRONT S.P+BH.P RELAYMUTEPOWERAMPK13VR1AUX LEVELIC19X09,IC9SPEAN

21、AIC2X1ST SW, PS SWLD/UNLD SW, UP/DOWN SWRMR/BRKM/RMF/LMF/LMRX09,IC10M38199MF-075FPMAIN u-COM+5V+5VTC74HC166APPOLARUNITMUTEQ3,4Q10,11IC1 HA12209FMSAMPRECIC3IC1FL DRIVERu-COMA1 ED1SENSORREMOTEFL DISPLAYIC21OTHER CHSURROUNDJ4WOOFERSUBPHONESSURROUNDSP.+-RLSP.FRONTRL+-+IC4SURROUNDSRSVOL.ELECTRICZERO MUTE

22、16.9344MHzDRIVER MUTEIC2CXD2587QDSP/DACIC1RF AMP/SERVOCXA1571MBA5979SIC4,5 MOTORDRIVERTA8409SL.MDRIVERLOADINGROTARYDRIVERR.MTRAVERSE UNITD40-1500STARTLIMIT SWFOCUSTRACKINGIC34ch BTL DRIVERD.MDRIVERDISC MOTORDRIVERFEED MOTORF.MCOILDRIVERTRACKING COILCOILFOCUS COILDRIVERLDSWQ1LDFECBAIC5BA10393Q3,4Q1,2

23、A PBB R/PIC6EXPANDER IC+5VOUTL1MPXL.P.F.CHANNELOTHERDOLBYQ5CONTROLBIASVR3,4BIAS TRAPIC4BA3126NBPBLEVELVR1,2IC3B PB AMPBEAT CANCELQ7,8LEVELVR7,8APBIC2A PB AMP22.2dBS60mVOSCBIASB ERASEAUX OUTAUX OUT0.5V/3.3kAUX INAUX IN400mV/47kMIC1,22.5mV/2.2kMICINPUTSEL.IC1AM:180mV/3.3kFM:600mV/3.3kTUNER OUTPUTBLOCK

24、TUNERACD24D26SWSURROUNDMATRIXRELAYS.W. SPEAKERRELAYFRONT S.PTUNER(IC2)DSPDRIVER(IC4.5)MOTORH.P RELAYTUNERANALOGMECHA.DECKQ19IC13AVR+5V+9VBIASAVRFL DRIVERu-COMMIAN u-COMSUB u-COMIC21ICIC15AVRPOWER+12VIC12AVR-12VQ14AVR-30VQ15AVR+5.6VIC21POWERICD23D22D24D26D18D17VR1MIXINGIC101(2/2)MIC AMPIC101(1/2)RXD-

25、501/551/571/A5/701/751/771/A85BLOCK DIAGRAMRXD-501751(K) COVER( 98.4.23 21:43 yW10RXD-501/551/571/A5/701/751/771/A86CIRCUIT DESCRIPTION1. Initialization1-1 Setting of initial conditionsWhile pressing the ENTER key, plug the AC cord intothe AC power outlet.1-2 Initializing operationA microcomputer is

26、 initialized for start when the ACpower is turned on while pressing the ENTER key. Atthat time, CD mechanism and CASSETTEmecha-nism are also initialized.During the initial operation, the display shows “INITIAL-IZE”and after that the clock blinks up on display.1-3 Initial items and back up dataITEMSC

27、 POWEROFFC VOLUME45C BALANCECENTERMUTINGOFFEQOFF (ROCK)C EQ. MANUFLATAMPEX. BASSONC SRS 3DOFFC S.W.LEVEL 3 (RXD-701/751 ONLY)C INPUT SELTUNERC 3D LEVELLEVEL +5C DEMOONC BANDFMC LAST fLOWEST FREQUENCYTUNERC LAST PchC AUTO/MONOAUTOC PchTEST fC CLOCKAM 12 : 00C PROG ONAM 12 : 00CLOCKC PROG OFFAM 12 : 0

28、0TIMERC PRO MODETIMER PLAYC SOURCETUNERC Pch1C EXEOFFC OTTOFFSLEEPOFFC DIRECTIONFORWARDC RVS MODEpDECKC DOLBY NROFFA/BBACTIVE MODESTOPPLAY MODETRACKREPEATOFFCDRANDOMOFFPLAY MODESTOPTIMESINGLE1-4 Mechanism initialization1-4-1 CD mechanismDisc unclamps (traverse down)Rotary tray rotates (1/3 rotation)

29、If a mechanism error occurs, “C”is indicated on thedisplay.1-4-2 DECK mechanismWhen initial condition becomes NG for the third time,decide the error.The error condition is displayed as “X“ on the display.1-4-3 Error displayCD X ERRC back up dataRXD-501751(K) COVER( 98.4.23 21:43 yW11RXD-501/551/571/

30、A5/701/751/771/A87CIRCUIT DESCRIPTIONDesti-DSWReceiving frequencyChannelPORTnation3(83pin)2(84pin)1(85pin)(86pin)BandrangespaceIFRF47K10000FM87.5MHz108.0MHz100kHz+10.7MHz25kHz0AM530kHz1700kHz10kHz+450kHz10kHz0K20001FM87.5MHz108.0MHz100kHz+10.7MHz25kHz1AM530kHz1610kHz10kHz+450kHz10kHz0K31001FM87.5MHz

31、108.0MHz100kHz+10.7MHz25kHz1MW530kHz1610kHz10kHz+450kHz10kHz0SW5.9MHz17.9MHz5kHz+450kHz5kHz0E10011FM87.5MHz108.0MHz50kHz+10.7MHz25kHz0AM531kHz1602kHz9kHz+450kHz9kHz0E31011FM87.5MHz108.0MHz50kHz+10.7MHz25kHz0MW531kHz1602kHz9kHz+450kHz9kHz0SW5.9MHz17.9MHz5kHz+450kHz5kHz0E10101FM87.5MHz108.0MHz50kHz+10

32、.7MHz25kHz0RDSAM531kHz1602kHz9kHz+450kHz9kHz0E20110FM87.5MHz108.0MHz50kHz+10.7MHz25kHz0RDSMW531kHz1602kHz9kHz+450kHz9kHz0LW153kHz279kHz9kHz+450kHz9kHz0Q0111FML65.0MHz74.0MHz10kHz+10.7MHz5kHz1FMH87.5MHz108.0MHz50kHz+10.7MHz5kHz0MW531kHz1602kHz9kHz+450kHz9kHz0LW153kHz279kHz9kHz+450kHz9kHz03. Test mode

33、3-1 Test mode of the receiver3-1-1 Setting of the test modeWhile pressing the INPUT key or Band key, plug theAC power cord intoAC outlet.3-1-2 Canceling of the test modeUnplug the AC power cord.3-1-3 Condition in test modePOWER ONSELECTOR AUX (in case of INPUT key)TUNER (in case of BAND key)FL, LED

34、All the fluorescent display indicatorsand LEDs light. (The all illuminatedstate is cleared by pressing any mainunit key or remocon key.EX. BASS OFFS.W. OFF3-1-4 Basic operation in test mode.(1) The muting during mode selection is not controlled inthe test mode.(2) The test mode is cancelled when the

35、 AC power isturned OFF.(3) The operation of the keys in the test mode, as follows.3-1-5 The operation of the keys in the test mode.(1) MODE / 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

36、 on AUX, when the DISC 13 keysare operated, the 3D level settings can be made asfollows.1DISC 1 3D ON level -8 (Min)2DISC 2 3D ON level 0 (Center)3DISC 3 3D ON level +8 (Max)(3) DISC SKIP key (S level display)With the selector on TUNER, the fluorescent changescyclically as follows by pressing the DI

37、SC SKIP key.1ATT is switched OFF. “ATT OFF XX”2ATT is switched ON. “ATT ON XX”3ATT is switched OFF. Normal displayXX means A/D value (HEX) of S.(4) CD STOP keyWith the selector on TUNER, when the CDSTOPkey operated, the preset memory can be changed as10 steps.10 20 30 40 00 ()(5) AUTO, TUNING UP/DOW

38、NWith the selector on something other than TUNER,the E.Q (Flat, Min, Max) settings can be made bypressing the AUTO key and the tuning UP DOWNkeys.AUTO key E.Q FlatTUNING DOWN keyE.Q MinTUNING UP key E.Q Max2. Destination list of tunerRXD-501751(K) COVER( 98.4.23 21:43 yW14RXD-501/551/571/A5/701/751/

39、771/A88CIRCUIT DESCRIPTIONCD MECHCDM-27X14, IC1FL DRIVER uCOMuPD780204X09, IC10X09, IC11RDS ICSAA6579X09, IC1SELECTOR ICNJU7313ALX09, IC4SYSTEM ICM62430FPX09, IC9SPEANA ICBA3834SKX05, IC2PLL ICLC72131M38199MF-075FPu-COMX32, IC2DSPCXD2587QX28, IC6EXPANDER ICTC74HC166APDECK MECH(6) CD SKIP UP/DOWN key

40、sWith the selector on TUNER, the P. CALL is operatedby pressing the skip UP/DOWN keys.SKIP UP key P.CALL upSKIP DOWN key P. CALL down(7) CD OPEN/CLOSE keysWith the selector on TUNER, the channel space set-tings can be mad cyclically by pressing theOPEN/CLOSE keys with M version.(8) REC/ARMWhenever t

41、he REC/ARM key is pressed, the indica-tion of S.W. (ON/OFF) is available.4. Main microprocessor4-1 Microprocessor periphery block diagramRXD-501751(K) COVER( 98.4.23 21:43 yW15RXD-501/551/571/A5/701/751/771/A89CIRCUIT DESCRIPTIONNoNameI/ODescription1PS INIParallel serial IC input data2PS LOADOParall

42、el serial IC loadH : SHIFTL : LOAD3A MUTEOAudio mute controlH : OFFL : ON4BP INISpeana input (A/D converter input)5JOG CWIJog input B6JOG CCWIJog input A7ENC CWIRotary encoder input B8ENC CCWIRotary encoder input A9H.P.IHeadphones switch inputH : ONL : OFF10NCI/ONo used11CD RSTOCD DSP IC reset contr

43、ol (CXD2587Q)H : NORMALL : RESET12DRV CLKOFL driver u-COM control clock13DRV SIOFL driver u-COM control data output14DRV SOIFL driver u-COM control data input15S LEVELIRDS S Level input16RDS DATAIRDS data input17,18 NCINo used19CD CKOCD DSP IC clock (CXD2587Q)20SQCKOCD Sub code clock (CXD2587Q)21CDD

44、TOCD DSP IC data (CXD2587Q)22SQSOICD Sub code input (CXD2587Q)23CDXLOCD latch output (CXD2587Q)24SENSICD sense input (CXD2587Q)25CDSCKOSense data reading clock output (CXD2587Q)26LD ONOCD laser outputH : OFFL : ON27DATAOSELECTOR/SYSTEM/DAC/DOLBY IC data output28CLKOSELECTOR/SYSTEM/DAC/DOLBY IC clock

45、 output29PROTIProtection inputH : PROTECTION ONL :NORMAL30SCORISub code synchronism signal (CXD2587Q)31E DATAOE. vol data output (M62430FP)32E CLKOE. vol clock output (M62430FP)33NCI/ONo used34RDS CLKIRDS clock input35RESETIReset signal inputH : NORMAL L : RESET36X CINITimer clock input (32.768kHz)3

46、7X COUTOTimer clock output (32.768kHz)38X INIMain clock input (8.38MHz)39X OUTOMain clock output (8.38MHz)40VSSGND41PLL DOIPLL data input42STEREOIStereo detector input43SDISD detector input44CEIPower failure inputH : AC ONL : AC OFF45PLL CEOPLL IC chip enable (LC72131)46TU EMPOFM emphasis change-over (M type only)H : 100kHzL : 50kHzPolar/Pilot change-over (Q type only) H : POLARL : PILOT47FL RSTOFL driver reset control output4-2 Pin descriptionMicroprocessor : M38199MF-075FP (X09, IC10)RXD-501751(K) COVER( 98.4.23 21:43 yW18RXD-501/551/571/A5/701/751/771/A810CIRCUIT DESCRIPTIONNoNameI/ODescri