Kenwood-KXFW4030-tape-sm 维修电路原理图.pdf

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1、STEREO DOUBLE CASSETTE DECKCT-405KXF-W4030/W4030-S/W4030ESERVICE MANUAL 2000-3/B51-5604-00 (K/K) 3037TAPE AAUTO REVERSETAPE BAUTO REVERSEPOWERPHONESTIMER PLAYREC OFF PLAYMODEREC LEVEL/BAL/BIAS- ON OFF123718PAUSEREC/ARM0237RESET AMIN/LMAX/RDOLBY NRREV.MODE NORM.DUBB HIGH DUBB MPX FILTERCCRSAUTO BIASR

2、ESET B0PLAYBACKRECORDINGPLAYBACKLINE INRECPLAYLINE OUTSYSTEM CONTROLLRKnob(POWER) *(K27-)Cassette door assy *(A53-)Display window(B03-3870-08)AC power cord *(E30-)RCA jack(E63-1076-08)Phone jack(E11-0918-08)Front panel assy *(A60-)Control button *(K27-)Metallic cabinet *(A01-)* Refer to parts list o

3、n page 18. Knob(TIMER) *(K27-)Knob(ROTARY)*(K27-)Cassette door assy *(A53-)Knob(EJECT)(K27-2431-08)Knob(EJECT)(K27-2431-08)H/P jack(E11-0925-08)AC power cord bushing*(J42-0083-05)70%RadioFans.CN 收音机爱 好者资料库CT-405/KXF-W40302CONTENTS / ACCESSORIESCONTENTS / ACCESSORIES . 2BLOCK DIAGRAM .3CIRCUIT DESCRI

4、PTION.4ADJUSTMENT.6PARTS DESCRIPTIONS .7PC BOARD . 8SCHEMATIC DIAGRAM . 11EXPLODED VIEW .17PARTS LIST.18SPECIFICATIONS .21ContentsAudio cord(E30-0505-05). (2)System control cord(E30-2816-05).(1)AccessoriesRadioFans.CN 收音机爱 好者资料库(JK01)PLAY HEAD(CN01)REC/PLAY HEADERASE (CN02)RELAY(REC/PB)PRE AMPLIFIER

5、DECK A/B(IC1 TA7784)SYSTM CONTROL(JK02)(Q06)R/P SW(Q19,21SPEED N/H CONTROLDECK B)(Q20,22DECK A)(Q54,55(Q56,57SOL. SWDECK B)DECK A)DECK A(CN06)(CN07)DECK B(Q51,52(Q50,53MOTOR VOLTAGE SWDECK B)DECK A)EQ AMPLIFIER(IC20 CXA1598S)(IC16 TC4051BP)EQ SWAUTO-BIAS LEVEL SW(Q34-Q36)(IC14 UPC1297CA)DOLBY HX-PRO

6、(Q23,24)ERASE OSC (105kHz)(Q27,28)BIAS ON/OFF SW(Q25,26)ERASE ON/OFF SWCPU(IC11 LC866524A-5P85)ELEC. VOLUME CONTROL(IC3 TC9413AP)LINE AMPLIFIER(IC5 NJM4558D)(IC4 CXA1561S)DOLBY B/C NR(Q15,16)MPX SWDOLBY SW(Q17,18)(IC18 NJM4558D)LEVEL METER AMPRESET(IC19 S806D)(IC12 S-24C01)EEPROMPHOTO DETECTOR(IC6 B

7、A10393)HEADPHONES JACK(JK300)CN08HEADPHONES AMP(IC17 NJM4556AL)400/12.5K(Q33)AUTO BIAS F. SELECT(Q07A,07)SWAUTO BIAS INREC/PLAY SWCN09CN05ENCODER SWCN04KEY CONTROLFLD DISPLAYPOWER TRANSCN03(D01 GBL02)DC RECTFIRE+12V REGULATOR(IC9 NJM7812FA)(IC8 NJM7808FA)+8V REGULATOR(IC10 NJM78M05)+5V REGULATOR(IC7

8、 NJM79M08)-8V REGULATOR(Q14)-20V REGULATORLINE INLINE OUTPLAY A/B SWTYPE I/II SWREC O/PSENS/PLAY/CrO2/REC(FWD/REV)REC MUTEAUTO BIAS F. SELECTAUTO BIAS IN400/12.5K F/OEf AC(FLD)LINE O/PLINE IN MUTECK/STB/DATALINE O/P MUTEKXF-W4030/CT-4053CT-405/KXF-W4030BLOCK DIAGRAM4CT-405/KXF-W4030CIRCUIT DESCRIPTI

9、ONPinPin NameI/ODescriptionACTIVENo.HL1AUTO BIAS INOAuto bias control port.A BIASOther2400/12.5K ,F/OO400Hz/12.5kHz freq. output.3R/P HEADOControl port for recording/playback.RecordingOther4REC MUTEOAudio muting control on R/P for B deck.OffOn5LINE/O MUTEOAudio muting control for line out.OffOn6B ME

10、CH VCCOB mecha. solenoid control.OtherStop7A MECH VCCOA mecha. solenoid control.OtherStop8B SOLOB mecha. solenoid control.OnOff9A SOLOA mecha. solenoid control.OnOff10IN/MUTEOAudio muting control for input.OffOn11AC CHKIPower failure input.AC OnAC Off12RESETIReset signal input.13NC-Unused.14ENCODER

11、IN BIEncoder input B.15VSS-Connected to ground.16,17CF 6MHz-Main clock(6.0MHz).18VDD-Power supply.19-22K1-K4IKey input(k1-k4).23TIMER P/R SWITimer Play/Rec switch input.24CCRS LEVELOCCRS level control port.25LEVEL MTR L/INILevel meter input (Lch).26LEVEL MTR R/INILevel meter input (Rch).27NC-Unused.

12、28ENCODER IN AIEncoder input A.29-Connected to system cont. data. 30-35FLD 1G-6GOFLD grid control port(1G-6G).36-45FLD P1-P10OFLD segment control port(S1-S10).46VDD-Power supply.47-50FLD P11-14OFLD segment control port(S11-S14).51-VPP-FLD power supply(-26V).52-61FLD P15-24OFLD segment control port(S

13、15-S24).62A CrO2 SWIA CrO2 switch input.Type 2Type163A PLAY SWIA play switch input. StopPlay64A SENS. PULSIA photo sensor input.65A PACK SWIA pack switch input.Tape NoTape Yes66B CrO2 SWIB CrO2 switch input.Type 2Type 1 67B SENS. PULSIB photo sensor input.68B PACK SWIB pack switch input.Tape NoTape

14、Yes69B PLAY SWIB play switch input. StopPlay70REC FWD SWIForward recording switch input.71REC REV SWIReverse recording switch input.72VDD-Power supply.73MPX FILTEROMPX filter ON/OFF control.74REC FILTEROMPX filter ON/OFF control.75REC EQ ORec EQ.(I/II) Control.III76SPEED N/HOB motor speed (normal/hi

15、) control port.NorHi77DOLBY NR B/COControl port for dolby NR(B/C).78DOLBY NR ON/OFFODolby NR ON/OFF control port. 79A MOTOR SPEEDOA motor speed (normal/hi) control port.NorHi80P.B EQOP.B EQ. Control.81MTR AMP GAIN AOGain control of level meter amplifier.82MTR AMP GAIN BOGain control of level meter a

16、mplifier.1. Pin description of microprocessorCT-405/KXF-W4030CIRCUIT DESCRIPTION5PinPin NameI/ODescriptionACTIVENo.HL83AUTO BIAS F SEL.OAuto bias frequency selection 8LPF).400Hz12.5kHz84ERASE OSC ON/OFFOErase OSC(ON/OFF) control.RecordingOther85BIAS OSC ON/OFFOBias OSC(ON/OFF) control.86-88BIAS L1-L

17、3OBias level control output.89VSS-Connected to ground.90VDD-Power supply.91NC-Unused.92PLAY A or BOA/B deck control port.A PlaybackOther93NC-Unused.94EE PROM SCLOEE PROM SCL.95EE PROM SDAOEE PROM SDA.96SYSTEM CONT.BUSYOSystem control byusy.97SYSTEM CONT.DATAOSystem control data.98TC9413AP DATA/OODat

18、a output to E. volume.99TC9413AP STB/OOStrobe output to E. volume. 100TC9413AP SCK/OOClock output to E. volume. Pin No.Pin NameType I N.SpType I H.SpType II N.SpType II H.Sp75Rec E.Q. I/IIHHLL76Speed N/HHLHLPORTSW1SW2SW3SW4SW5SW6(PIN19)A REVA FWDA ARESET-K1PLAYPLAYREWFFA(PIN20)B REVB FWDBBREC/MODEK2

19、PLAYPLAYREWFFREM(PIN21)A B PAUSECCRSAUTORESETK3STOPSTOPBIASB(PIN22)DOLBYREVNORHIMPX-K4MODEDUBBING DUBBINGFILTER2. Key matrix3. Description of R/P output for microprocessor.( ) Microprocessor portPin No.Pin NameDescription3Rec/P.BB Mecha. Recording Mode : HOther : L4Rec MuteB Mecha. Recording /Playba

20、ck Mode : HOther : L5Line MuteA/B Playback or B Recording : HOther : L80P.B EQ. 70Tape Type II : HOther : L1Rec Input SelectAuto Bias Recording : HOther : L83A. Bias F SelectAuto Bias 400Hz Recording : HOther : L85B OSC On/OffRecording/Playback : HOther : L81M. Amp Gain 1P.B/Recording/Dubb. : HOther

21、 : L82M. Amp Gain 1Auto Bias : HOther : LPin No.Pin NameRec.M.Fil OnRec.M.Fil OffOther73MPX FilterLHH74REC FilterLLHPin No.Pin NameDolby CDolby BOff77Dolby B/CLHH78Dolby On/OffLLH* Filter off when dubbing mode.LINE INRECPLAYLINE OUTSYSTEMCONTROLNo.ITEMINPUTSETTINGSOUTPUT SETTINGSCASSETTE DECK SETTIN

22、GSALIGNMENT POINTALIGN FORFIG. CASSETTE DECK SECTIONTAPE: NORMAL, DOLBY: OFF, INPUT: LINE IN0 dBs = 0.775 V I. REC/PLAY HEAD 1 DEMAGNET-IZATIONPOWER OFFRemove the cassette door.REC/PLAY headDemagnetize the REC/PLAY head with a head demagnetizer. 2 CLEANINGPLAYREC/PLAY head, erase head, capstan pinch

23、 rollerClean the REC/PLAY head, erase head, capstan and pinch roller using a cotton swab slightly damped with alcohol. 3 AZIMUTH(A)MTT114, TCC-153 0 kHz, -10 dB(B)PLAYAzimuth adjustment screwMaximum output.(a) II. PC BOARD 1 NOR.SPEEDA DECKB DECKHI.SPEEDNOR.SPEEDHI.SPEED(A)MTT-111, TCC-1103 kHz(B)PL

24、AYSFR 06SFR 08SFR 05SFR 075.4 kHz5.4 kHzPLAYHI DUBBINGPlay first and short* TP2 to GND.Adjust the tape speed so that a 3 kHz signal is produced at the center of the tape.Adjust the tape speed so that a 3 kHz signal is produced at the center of the tape. III. PC BOARD * TP2 (Q12, BASE)PLAYBACK LEVELM

25、TT-150400 Hz (200 nWb)DOLBY 0 dB LEVEL(B)20 dBs0 dBs(B)PLAYASFR101 (L)SFR102 (R)Output level : 0 dBs BIAS CURRENT(A)400 Hz, -20 dBs12.5 kHz, -20 dBsAdjust REC level VR so that the REC monitor output becomes -20 dBs at 400 Hz, then record and reproduce signal of 400 Hz and 12.5 kHz in alternation.SFR

26、11 (L)SFR12 (R)Record 400 Hz and 12.5 kHzin alternation and adjust the variable resistors which control the bias current so that the same playback level is obtained.RECORD LEVEL(A)400 Hz, 123mV(B)Record and reproduce a 400 Hz, signal under the conditions set in .SFR09 (L)SFR10 (R)Adjust for 0 dBs at

27、 line out.CT-405/KXF-W4030ADJUSTMENT6CT-405/KXF-W4030PARTS DESCRIPTIONS78ABDCE2135746Refer to the schematic diagram for the value of resistors and capacitors.PC BOARD (Component side view)J324J319J318J317J326J327J303RESET ADOLBYREV. MODENOR DUBBINGHI DUBBINGMPXCCRSAUTO BIASRESET BA REWA FFPAUSEREC/A

28、RMB REWMODEB FFJ302J301J300J316J315J314J313J312J311J310J309J308J307J306J305J304J323J322J320J321J325R300R305R311R317R316R308A2A3R310R309R315R314R321R320R319R318R303R30421REVSTOPFWDR302R312R301151549111253738FWDSTOPREVR307R313R30615C307C306G2C30014C302C303C301R323R325R324R322G114PLAYREC.TIMERS304S317S

29、318S319S320FLT01FRONT PWBS321S314S315S316S304S303S313S309S307S310S308CN05S300A MECHA PWBS311S301CN300CN302CN300CN04B MECHA PWBS306S312S305CN302POWER SW. PWBS323POWERS322CN08PHONESHEADPHONE PWBJK300CN09S325ENCODER PWBFHJLNGIKMO2135746Refer to the schematic diagram for the value of resistors and capac

30、itors.PC BOARD (Component side view)910J187J188J189J190J179J145J149J191J215J158J216J181J152J186J197J182J178J177J176J203J211J224J242J127J130J123J200J143J51J50J49J64J61J62J63J60J48J142J44AJ88J246J129J125J126J131J202TP2TP6TP4TP5OSC OFFTP3TP11GNDDOLBYDOLBYRch 388mVLch 388mVRchTP7LchL13L14TP8GNDOSC FREQ.

31、L04J184J196J199L09J198J244J245J162J161J160J159J1LJ185J135J122J136J147J146J228J229J231J241J183J201J170J169J172J171J206J167J133ENCODERJ134J168J205J166J165J194J180J175J156J155J154J144J47J46J151J164J163J148J141J140J157J173J99J213J238J225J223J237J81J82J83J137J68J84J85J86J87J119J153J80J118J114J111J110J109

32、J117J92J94J96J76J75J78J74J73J72J67J66J65J71J70J69J95J93J91J90J120J235J234J226J212J221J214J227J218J219J220J217C114C115C111C112R106C16C24R207BC134R86DR105R118R210R216R222R228R212R218R224R230C10R201R47R54R39C33R41R43R11R12R42R52AR113LchBIAS ADJ.SFR11RchBIAS ADJ.SFR12R108R115R109R110R204AC09R86HR124R180

33、AR126R104C130R205R207AJ107C18C17R13R14R07C106C102J192J195J240J23J193J208J209J210J230J239J113J24J1EJ1FJ1HJ45J1KJ43J1AJ247J79J77J102J121J112J89J14J104J105J106J232J233J97J98 J128J174J150J139J138J132CF01 J115 J207J243J1MC162C160C121C85C162C82C72C73AC84C86C87C80C71C60AC94C64C68C65C67C66C115AC153AC153C152

34、AR167C153BC155C150AC141C52C44C26C45C50C51C53C27C28C140C73C69C25R23R112C22C21C133C08C20C23C07C132C132AC38C40C49AC133AC47C49C41C49BC48C39C14C18AC17AC131022211150518081100130316113911373812R256AR256R80R76R85R78R82R75R86GR86BR86AR87R89R86CR86R88R86ER86FR156R250R251R30R29R21R28R79R81R84AR258R91R257AR101R

35、96C110C05R05C03R08C136C100C99R206AC135C137R206C131R208BR04R06C06C04R19C01R01R02C19C02C15R03R20R17R09R10R229R223R217R211R207R209R213R219R225R231R205AR51R49R203R215R221R227R226J236J248J15J13J17J31J7J222J8J1GJ36J29J10J33J44J42J1I G O331I G O31IGO311J41J40J2J6J32J16J10J30J39J56J1CJ1B15J55J54J38J37J5J35J

36、34J18J27J26J19J28J53J52J36AJ59J3J4J58J57J20J21J25J22J12J11J124J100J101J108R220R214R204R202J103R53R44R208R16RY01L12L03L11L02L01C108L07L08R94R256BR90AR257BR91ASFR08SFR06SFR05DOLBY LEVELDOLBY LEVELADJ.ADJ. RchREC LEVELADJ. RchLchSFR01SFR02SFR10REC LEVELADJ. LchSFR09SFR07R90R100C104C101C105C107C103R103R

37、129J116R125R130R127R122R180R200R52L06C35C37R45R55C11R40R62R165R165AR165BR102AC62C60C63C61C91R260R262R263C89C88R180BR136AR57AR135R137AR264R261R265C81R74R70AR70BR73R167AR162R132AR135AR131AR136AC1461841C144C90R138R136R140R142C143C148C145C147R133R134C142C149R139HEADPHONER69C46R57R56R61C55R59AR59R58AR36R

38、60C54J9R37R56AR58R33R35R32R34R141R137JK02R66R64C32C29C30R26C42R38R50R144R132R70FR02FR01R71FR03R131R68R143R161R163R112BR63R65R67C43R27C12R166AR166C152C150R164BR160R150R151R164L05R48R46C34R164AR102R204BR72R159R158R157R121AR121C93R120C95C154C152BC36R272R273R274SWTIMERR97C119OSC FREQ. ADJ105KHZC120C118R

39、255R83R77R84R92R98C117R259R90BR95R128J204C113C109R276AR270R271R275R277R145R99R257R93R83ABBBEBEOIGBEBEBEBEBEBEBEBEBEBEBEBEBEBEBEBEEBEBEBEBEBEEBEBBABBAEEBEBEBEBEBEBEBEBEBEBEBEBEBEBEBEBEBEBEBEBEBEBEBEBEBEBEBE4141128585418541854116981181091169812212111169812212111A6C3051T015A2A5A4A1D21D03D04D07D22Q57Q25

40、IC19D09CN05Q20Q19CN07Q27Q37Q34Q35Q36Q38Q07AQ47Q46Q45Q44Q41Q14Q43IC17CN08Q12Q12AQ43AQ42Q13AJK01LINE OUTLINE INPLAYCONTROLSYSTEMMAIN PWBRECQ13Q09Q08Q42AD23Q06Q10Q30Q29Q04Q03CN02CN01Q52Q54Q28Q50Q15Q16Q07Q26Q33Q40Q39Q18Q17Q56Q55Q53Q22Q51IC11CN04CN09Q23Q24Q11Q21CN06D162D24D13D12D10D01D15D11D19AD19D17D109

41、D110D107D108D05CN03D14D02AD02D22AD06D106D105D104D103D16D18AD18D20D08D160IC6IC12IC18IC7IC10IC9IC8IC5IC1IC14IC16IC4IC3IC20TRANS PWBCN03ABDFHJCEGI213574632112345612345678910SOL.SENSPLAY SWMTR (+)SPEED ASPEED B+5VGNDCrO2 SWPACK123456789101112SOL.SENSPLAY SWMTR (+)SPEED ASPEED B+5VGNDCrO2 SWPACKREC. SW (

42、FWD)REC. SW (REV)321123456642115103121416857913VCCGNDBIAS1115KR07330KR0518KR0322KR174.7u50+C0710u50+C13330PC1527KR13330PC03C05 0.01R1427K10u50C14+1KSFR02330KR02680PC02680PC01330KR010.1C19470u16C20+SFR011KC16330P820PC18820PC174.7u50C17A+4.7u50C18A+2.2u50C25+R23 3.3K1/4WRY0115KR08330KR0618KR040.01C063

43、30PC0447KR2047u16C21+C22+1u501KR194.7KR218092100U16+0.1C24C232.2KR1227mHL0275PC102700PC123.3KR104.7u50C08+22KR163.3KR09+8V+8V75PL01 27mHC092700PC112.2KR1112345678VSSOUT(L)IN(L)NCA-GNDCS1GNDCK161514131211109VDD(R)OUT(R)INNCA-GNDCS2STBDATA2221201918171615141312VCTPB/IL/IMPX/IMPX/OL/OTCMTCLREC/OMODEVCC

44、1234567891011IREFPB/IR/IMPX/IMPX/OH/OTCMTCLREC/OSW.VEEL063.3KR44R428.2KR40 10KC32 100P4.7u50C44+1KR385.6K5.6K9998TP110KR2710u50+C26AC301000P1000PC295.6K10010u50C26+10KR41100PC331K4.7u50+12354R55432513.3K0.1C350.068C37R438.2K4.7KR364.7KR3712345678910SOL.SENSPLAY SWMTR (+)SPEED ASPEED B+5VGNDCrO2 SWPA

45、CK123456789101112SOL.SENSPLAY SWMTR(+)SPEED ASPEED B+5VGNDCrO2 SWPACKREC. SW (FWD)REC. SW (REV)56697165266320KSFR0522KR9310KSFR0727KR9547KR916556R9427KSFR0810K47KR9020KSFR0622KR9210KR90A1/4WR91A10K 1/4WTP24.7KR90B10KR86H79L09C1200.01R985.65.63900PC11818KR9618KR973900PC119R100 1501KR1014.7KR102BAABCr

46、O2 SWPACK SWCrO2 SWPACK SWREC SW(RVS)REC SW(FWD)SOLSOLC34 0.1C36 0.068C38 10u50+TP4TP3C49 100u16+R52 47R548.2KC39 10u50+100u16C49B+100u16+C49A10u50+C40100u16C48+8.2KR52A2.2u50+C1218200PC117TP8TP54.7KR102AR100A150 1/4W470uHL03470uHL041/4WR99Q23,246547321Q25,262221201918171615141312GPGHGLGPCALGHCALREC

47、CALINIRFEBOOSTVCCOUT1234567891011FQF/QFMFPCALD-GNDRECINGNDBOOSTVEEOUT161514131211109VDD2183ABC1234567846CON75INHVEEVSS2021220.01C134312R20639K100PC13110u50C137+12KR206B2.2u50C133+SFR09 10K1KR205R205A2.2KC133A+1u50R2042.2KR204A1KSFR10 10KR2012.2K3.3KR2023.3KR2031u50C132A+33KR204BR2002.2KC27 4.7u50+C2

48、8 4.7u50+10KR26220PC42220PC43R28R29R30L05R451/4W15K+8V+8V+8V+8V+8V+8V+8V13121415R86D 10KR86C 2.2K32221202112141513C135 0.01C136+10u5012KR207BR206A15KR22615KR229120KR22768KR22875KR23068KR23122KR21168KR21710KR22368KR21633KR21518KR220200KR22151KR22215KR21418KR20851KR21027KR20968KR21956KR21815KR22439KR2

49、2539KR21327KR2122.2u50+C132100PC130757610u50C99+10KR121AR207 47K10KR207A10K1/4WMUTE(L)(R)100u16C162+6265667068C160100u16+12V+12V+5V101387610KR2571KR2551KR25610KR25810KR257A1KR257B1/4WR256B10KR256A91KL13 470uHL14 470uH6161121310844R53473+5V+8V+8V+8V1013+12V+12V+12V+12V+5VR39C45+8V+12V+12V+8V+5V+5V+5V

50、+5V+5V+5V+5V+B+B+B+B+B+B+B+B+B+12V8V8V8V8V8V8V8V8V8V8V8V8V+8V+8VNF-2NMNMNF-1CH1-FCH2-FCH2-RCH1-R23154786OSC FREQ105KHzOSC OFF1,2B(A)B(B)+8V+5V+B+12V+5V1312HNNORTAPE TYPE1415CrO2PINNo.SPEEDTAPEHNHNHNCN01CN02CN06CN07CN01CN02LchRchRchERASELchPLAYR/PEQ SWT1/T2 SWPB LEVEL(Rch)(Lch)PB LEVELD20Q06R/P SWQ03