Kenwood-CT2050-tape-sm 维修电路原理图.pdf

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1、RECPLAYLINEINLINEOUTRLSYSTEM CONTROLAC220-240VAC110-120VPOWERTAPE B18 PAUSE REC/ARMSTEREO DUBLE CASSETTE DECK KX-W6080AUTO REVERSEREC LEVEL /BAL./ BIASMAX/RMIN/LMODEREC OFF PLAYTIMERRESET BAUTO BIASCCRSMPX FILTERNORM.-DUBB.-HIGHTAPE A018 PAUSE REC/ARMAUTO REVERSE11RELAY RECREV.MODEDOLBY NRRESET APHO

2、NES-ON OFF0FORWARDSTOPREVERSEFORWARDSTOPREVERSEKENWOOD badge(B43-0302-04)Front glass(B10-2486-04)Knob(K29-6935-04)Knob(K29-2936-04)Panel*(A60-)Phono jack(E63-0136-15)Miniature phone jack(E11-0188-05)AC power cord*(E30-)Foot*(J02-)Power cord bushing(J42-0083-05)Cassette lid L*(A53-)Knob*(K29-)Knob*(K

3、29-)Knob*(K29-)Knob*(K29-)Knob (BUTTON)*(K27-)Phono jack(E11-0292-05)Slide switch(S31-1036-05)Front glass(B10-2450-03)Knob(K29-5828-04)Front glass(B10-2486-04)Cassette lid R*(A53-)PRECAUTIONS FOR REPAIRRefer to KX-W4070/W6070 service manual(B51-5031-00), if you want to know moreinformation of CIRCUI

4、T DESCRIPTION.Illustration is KXF-W6010.* Refer to parts list on page 18.STEREO DOUBLE CASSETTE DECKCT-203/KXF-W4010/KXF-W4010ECT-2050/KXF-W6010/KXF-W6010ESERVICE MANUAL 1998-2/B51-5413-00 (K/K) 3430CT-203/KXF-4010(K) COVER( 98.4.25 0:05 PM yW 2RadioFans.CN 收音机爱 好者资料库CT-203/2050/KXF-W4010/W60102CONT

5、ENTS / ACCESSORIES / CAUTIONSCONTENTS / ACCESSORIES / CAUTIONS. 2CONTROLS . 3ADJUSTMENT. 5PC BOARD . 7SCHEMATIC DIAGRAM . 9EXPLODED VIEW . 16PARTS LIST. 18SPECIFICATIONS . 23Beware of condensationWhen water vapor comes into contact with the surface of coldmaterial, water drops are produced. If conde

6、nsation occurs, cor-rect operation may not be possible, or the unit may not functioncorrectly. This is not a malfunction, however, and the unit shouldbe dried. (To do this, turn the POWER switch ON and leave theunit for several hours.)Be especially careful in the following conditions:GWhen the unit

7、is brought from a cold place to a warm place,and there is a large temperature difference.GWhen a heater starts operating.GWhen the unit is brought from an air-conditioned place to aplace of high temperature with high humidity.GWhen there is a large difference between the internal tempera-ture of the

8、 unit and the ambient temperature, or in conditionswhere condensation occurs easily.CautionsOperation to resetThe microcomputer may fail into malfunction (impossibility to oper-ate. erroneous display, etc.) When the power cord is unpluggedwhile this unit is ON or due to an external factor. In this c

9、ase, exe-cute the following method to reset the microcomputer and return itto normal condition.Turn the power switch on and off again while pressing the stop(7)key on desk B. Please note that resetting microcomputer clears contentsstroedin and returns it to the condition when it left the factory.Con

10、tentsAudio cord.2(E30-0505-05)System control cord.1(E30-2816-05)Except for U.S.A., Mexico, Canada,U.K., Europe and Australia AC plug adaptor.1(E03-0115-05)Note : CT-203 and CT-2050 is for USA and Canada market.AccessoriesCT-203/KXF-4010(K) COVER( 98.4.25 0:05 PM yW 3RadioFans.CN 收音机爱 好者资料库CT-203/205

11、0/KXF-W4010/W60103POWERTAPE B18 PAUSE REC/ARMSTEREO DUBLE CASSETTE DECK KX-W6080AUTO REVERSEREC LEVEL /BAL./ BIASMAX/RMIN/LMODEREC OFF PLAYTIMERRESET BAUTO BIASCCRSMPX FILTERNORM.-DUBB.-HIGHTAPE A018 PAUSE REC/ARMAUTO REVERSE11RELAY RECREV.MODEDOLBY NRRESET APHONES-ON OFF0FORWARDSTOPREVERSEFORWARDST

12、OPREVERSEDeck A:Playback and Recording(KXF-W4010: Playback only)Deck B:Playback and RecordingEject button 0Eject button 0Operation key sectionDisplay PAUSE keyREC/ARM key8 8 8 Fast reverse keyFast forward keyPOWER switchPHONES jack PAUSE keyREC/ARM keyFast reverse keyFast forward keyREC LEVEL/BAL. (

13、BALANCE)/BIAS control knob(KXF-W4010: REC LEVEL/BAL.only)MODE keyTIMER switch11HIGH DUBBINGHIGH DUBBING keyNORMAL DUBBING keyNORMAL DUBBINGThis Illustration shows the KXF-W6010 model.Operation Indicators (Deck A) Transport directionRecording indicator(KXF-W6010 only)Pause indicator(KXF-W6010 only)2,

14、 38 Operation Indicators (Deck B) Transport directionRecording indicatorPause indicator2, 3REV.MODEindicatorsPeak level indicators(Dolby NR reference level)CCRS indicatorsMPX indicatorBAL.BIAS LEVELindicators(KXF-W4010:BAL.,LEVEL only)Deck B counterAUTO BIAS indicatorDOLBY NR indicatorsDUBBING indic

15、atorsNORMALHIGHRELAY indicatorDeck A counterDUBBING NORMAL HIGH DOLBY NRAUTO BIAS B C B CCONTROLSCT-203/KXF-4010(K) COVER( 98.4.25 0:05 PM yW 6CT-203/2050/KXF-W4010/W60104RESET BAUTO BIASCCRSMPX FILTERNORM.-DUBB.-HIGHRELAY RECREV.MODEDOLBY NRRESET AFORWARDSTOPREVERSEFORWARDSTOPREVERSERESET BAUTO BIA

16、SCCRSMPX FILTERREV.MODEDOLBY NRRESET AFORWARDSTOPREVERSEFORWARDSTOPREVERSERESET A key(COUNTER)DUBBING keyNORMALHIGHMPX FILTER keyREV.MODE keyCCRS keyDOLBY NR keyRELAY REC keyAUTO BIAS keyRESET B key(COUNTER)STOP keySTOP keyPlay keys ,(For deck A)Play keys ,(For deck B)RESET A key(COUNTER)MPX FILTER

17、keyREV.MODE keyCCRS keyDOLBY NR keyAUTO BIAS keyRESET B key(COUNTER)STOP keySTOP keyPlay keys ,(For deck A)Play keys ,(For deck B)Operation key section (KXF-W4010)Operation key section (KXF-W6010)CONTROLSCT-203/KXF-4010(K) COVER( 98.4.25 0:05 PM yW 7RECPLAYLINEINLINEOUTRLSYSTEM CONTROLOscilloscopeAG

18、AC voltmeterAC voltmeterFrequency counter(A)(B)8 Please refer to Automatic Adjustment for Playing, Recording, BIAS level adjustment.(a) Azimuth adjustment screwSystem connectionsCT-203/2050/KXF-W4010/W60105ADJUSTMENTCT-203/KXF-4010(K) COVER( 98.4.25 0:05 PM yW 10CT-203/2050/KXF-W4010/W60106ADJUSTMEN

19、TCT-203/KXF-4010(K) COVER( 98.4.25 0:05 PM yW 11ACEGIBDFHJ2135746Refer to the schematic diagram for the value of resistors and capacitors.PC BOARD(Component side view)78CT-203/KXF PCB/SD 2P 98.4.25 0:12 PM y W 1ABDFHJCEGI213574612. 8V6. 4V6. 4V6. 4V6. 4V6. 4V6. 4V12. 8V12. 2V3. 8V0. 8V1. 2V3. 8V9. 9

20、V10. 0V12. 8V12. 8V12. 8V12. 8V1. 7V12. 8V12. 8V0V0V0. 6V4. 4V4. 4V0V0V4. 4V0. 6V0V0V11. 9V11. 9V11. 9V11. 9V5. 5V5. 5V5. 5V5. 5V12. 8V12. 7VPLAY, RECREC PAUSE: 4. 6VOTHER:0V6. 4V6. 4VREC:4. 9VOTHER: 0VA. PLAY: 0VB. PLAY: 4. 7VA. PLAYB. PLAY: 0V: 4. 7VBIAS ON: 4. 6VBIAS OFF: 0V4. 6VPLAY, RECOTHER: 0

21、VREC PAUSE: 4. 6VREC: 4. 7VOTHER: 0VPLAY, RECOTHER: 0. 6VREC PAUSE: 0VREC: 0VOTHER: 0. 6V1. 2V1. 2V1. 2V1. 2V6. 0V1. 2V6. 0VCrO2: 0VNORMAL: 1.2VREC: 0. 7VOTHER:0VOTHER: 0. 6VPLAY, REC,REC PAUSE:0VREC:0VOTHER: 0. 6V4. 5V4. 2V0. 1V0. 2V0. 2V0. 2V4. 5V4. 7V0. 6V2. 6V12. 2V2. 7V2. 6V6. 1V6. 0V0. 2V6. 0V

22、6. 0V6. 0V0. 2V12. 8VX28- ( G / 8 )X28 - 278x - x x A / 8CN6CN5CN2REC INPLAY OUTJ 1J 2WH2Q1Q2I C7I C7Q3Q4Q50D3CN3Q51Q52LRI C3HX- PROQ26Q53IC5I C5Q9Q10Q6Q8I C4Q7Q5Q18Q16Q17Q15Q27Q28Q24Q25B MECHAI C4J 61 / 22 / 2J 4CN131 / 22 / 21/ 22 / 2D2*Q49*Q29Q31Q33Q35Q30Q32Q34Q36Q38Q40Q39Q37*Q41Q42Q43Q44D68D69D7

23、0D71D72D35D75D36D73D74D76D77J 8J 9J 5KX- W6080CN2KX- W4080B MECHAA MECHAA MECHARc h( RED )L c h( WHITE )COM( BLUE )Rc h( RED )L c h( WHITE )E (GRAY )E (YEL LOW)COM( BLUE )PHRPEHI C2J 14J 12J 13ERASEB PBA PBI C1I C2I C3I C4, 5I C6I C7I C8I C9I C10: XL24C01AP: CXP82540 - 136Q: HA12167FB: UPC1297CA: TA

24、8125S: NJM4558D: S- 806D- Z: BA17812T orUPC7812AHF: BA10393Q14, 15, 16Q512, 19, 20, 222628, 43, 444850, 53, 6568Q13, 14, 17, 18Q2325Q2936, 51, 52, 54Q3740: 2SD1450(S, T)UN4212: DTC124ES orUN4112: DTA124ES or: 2SC3311A( Q, R) : 2SC1845(F, E): 2SC2003(L, K)Q41, 42Q47: 2SA992( F, E ): 2SA1534A( R, S )D

25、2, 3, 5, 6, 1012D7: 1SS 133 orHSS104: HZS6. 8N( B2 ) orRD6. 8ES( B2 )D8D9, 20D13D18: HZS13N( B2 ) orRD13ES( B2 ): HZS5. 6N( B2 ) orRD5. 6ES( B2 ): HZS3. 9N( B2 ) orRD3. 9ES( B2 )D4: D3SBA20F03 orRBV- 402LFASELECTR/ PA / BHI .EQLINE MUTEBUFFLINE MUTELEVEL AMP S /WL INEMUTEDRIVERECMUTEDRIVELEVEL AMP S

26、WRECMUTESWOSC21, 45, 46, 58Q55: 2SD2374Q57: 2SA1535AQ56, 59, 60, 63, 64: 2SC3246Q61, 62: 2SA1309A( Q, R) oror2SA1048( Y, GR)1417, 19, 2130: HZS20N(B) orRD20ES(B)D 3 7: HZS2. 7N( B2 ) orRD2. 7ES( B2 )6777PHONESSYSTEM ICHEADRchLc hRc hLc hLc hRc h2SC2458(Y,GR)3336,46, R812KA.RECPLAYGNDA. CrO2MOTORCOM+

27、12VM(B)M(A)PHARGLLRLR1324R171R172C115C116R170R169C117R168R167R163C1131050C114R164R166R165R173R161R162R1100R2100R7R5R6R81K3. 9K3. 9K1KC31050C41050R3C1R4C218K2700P18K2700PR175R17610KR11R9R10100K100KR17R18100K100KR1210KC11810010C51050C610 501234567810KR15R133. 9KR143. 9KR1610KRGL- EHK2L6L53214532145VCA

28、PRE101112VCADETPEAKABSODETCOMP.78DRIVERTHERMAL DETECT INGPROTECTIONC IRCUITSTAOIL I Z I NGPOWER SOURCEPEAKDETABSODETCOMP.569C1010. 014C990. 02215C1000. 022131418C1020. 011231617R13633KR13533KC960. 01C950. 01560PC97C98560PR134220KR16022KL9641235680P680PR31R32150K150KC19C20C22C211050471647161050R33180

29、C25C26390P390PR35R366. 2K6. 2KR37R38150K150KC27C280. 0220. 02212345678C119C1203301610016R178R1791K 1 / 4W1K 1 / 4WR28150KC180. 022R266. 2KC12390PC101050C164716R22180C14R24220K330KR20C8220P8765C7220P330KR19R21180C13R23220KC91050C154716C11390PR256. 2KC170. 022R27150K43218910111213141516171819202122232

30、42526272829303132333435363738394041424344454647484950515253REC OUT+-LMARECTEQ VOLRECEQ5BITDAC+-LMA5BITDACRECEQEQ VOLRECTREC OUTSWI ILLOGICCMMB IASADJINJ5BITDACGNDCOUTB IAS(L )Vcc5BITDACB IAS(R)EQ -CONTROLERHCHNNMNCNNFMFQF/ QGHGLGPHMD-GNDON/OFFC/ONPXRESETR123R90R8962KC810. 150R79100KR8810KC7918PC8018

31、PR80C82100K0. 150R8310KR82R8410KR855. 6KR865. 6KR875. 6KC7856PR7856KC702.2 50C752.2 50C762.2 50C772.2 50R765. 6KC68150C662.2 50C640.150C621050R7010KR62R605. 1KR72220KR683. 9KR7447KR9324KC692.2 50C67150R673. 9KR6910KR71220KR61R755. 6KR7756KR7347KC652.250C630.1 50C61105010mHL2L110mHC88220PC87220PR39R4

32、01. 5K1. 5KR301. 5KR291. 5KR6510K123MOTORBA+1. 5KRchLchGNDPHOTO REFLECTOR45- EH+EH5605601010331656056056K56K3. 3K47K47K1050( 8 1 0 )( 2 2, 2 3)NCKXF-W6010 : D4 0 - 1473- 0 522KR174R9110KC8633016ERASEHEAD100K15 1 / 4WR177471618K18K4716N.NORN.Cro2H.NORH. Cro2R595.1K22KR122R121R120R119R118R117R116R115R

33、114R113R112R111R110R109R108R107R106R105R104R103R102R101R100100K56K100K39K36K33K18K56K56K75K82K39K39K18K18K33K18K27K39K27K27K51K22K2K100K22K43K43KC23180R34C24- EHK1W65W6110KR12610KR12515K15KR129R13015KR12815KR127R1374. 7KR1394. 7KR1414. 7KR1434. 7KR1384. 7KR1404. 7KR1424. 7KR1444. 7KW222W223SOLR. REC

34、PACKNCNCB. PLAYGNDB. CrO2MOTORCOM+12VM(B)M(A)PHBSOLR. RECPACKNCNCB. REC220PC92*R132220KC1031050R133220K220KR131W224W227W291. 2K1.2 KR146R1481. 2K1.2 KR147R14510P 500C10510P 500C1040. 047C1420. 047C152C111C1120. 010. 015. 6K5. 6KR151R15222KR14922KR15010KR21910KR220SOL.FWD RECPLAYCrO2RVS RECPACKB. PLA

35、YGNDB.CrO2MOTORCOM+12VM(B)M(A)PHBSOLR. RECPACKNCNCB. REC1234512345231RGL123MOTORBA+1. 5KRchLchGNDPHOTO REFLECTOR45- EH+EHKXF-W4010 : D4 0 - 1473- 05ERASEHEADSOL.FWD RECPLAYCrO2RVS RECPACKB. PLAYGNDB.CrO2MOTORCOM+12VM(B)M(A)PHBSOLR.RECPACKNCNCB. REC123MOTORBA+1. 5KRchLchGNDPHOTO REFLECTOR45- EH+EHKXF

36、-W6010 : D4 0- 1450 - 0 5ERASEHEADSOL.FWD RECPLAYCrO2RVS RECPACKPLAYGNDB. CrO2MOTORCOM+12VM(B)M(A)PHASOLR. RECPACKNCNCA. REC123MOTORBA+1. 5KPLAY HEADRchLchPHOTO REFLECTORKXF-W4010 : D4 0 - 1451- 0 5SOL.PLAYCrO2PACKRchLchGNDPLAYGNDB. CrO2MOTORCOM+12VM(B)M(A)PHASOLR. RECPACKNCNCA. RECR/P HEADRchLchR/P

37、 HEADRchLchR/P HEADRchLch1/ 4W15R254+EH+EH1234567891011121314151234567891011121314151234567891011121314151234567891011121314151234567891011121314151234567891011121314151234( 2 3 )( 2 2 )( 19 )( 10 )( 9 )( 8 )( 2 7 )(18 )(17 )(16 )(15 )(14 )(42 )(43 )(79 )(80 )(25 )( 24)TO CN2TO CN5TO CN3TO CN6( 76)(

38、 74)( 76)(74 )C1650. 010. 01C164W51C94220PC90220PC91C93C89220PW47+-+( 1 )( 2 )( 2 )( 1 )( 1 )( 2 )( 1 )( 2 )( 1 )( 2 )( 3 )( 4 )( 5 )( 6 )( 7 )( 8 )CAUTION: For continued safety, replace safety critical components only with manufacturersrecommended parts (refer to parts list). indicates safety criti

39、cal components. For continuedprotection against risk of fire, replace only with same type and rating fuse(s). To reduce the risk ofelectric shock, leakage-current or resistance measurements shall be carried out (exposed parts areacceptably insulated from the supply circuit) before the appliance is r

40、eturned to the customer.DOLBY and the double-D symbol are trademarks of DolbyLaboratories Licensing Corporation. Noise reduction circuit madeunder license from Dolby Laboratories Licensing Corporation.The DC voltage is an actual reading measured with a high impedance type voltmeter with a cassettelo

41、aded at playback mode. The measurement value may vary depending on the measuringinstruments used or on the product. Bias circuit DC voltage is measured while in the record mode.CT-203/KXF PCB/SD 2P 98.4.25 0:12 PM y W 2KMOQSLNPRT- 19. 5V- 44. 0V12. 8V- 19. 5V4. 9V4. 9V4. 9V3. 6V24. 7V11. 9V19. 4V 24

42、. 0V4. 9V4. 9V0V4. 6V28. 6V0. 6V- 13. 2V- 19. 5V- 36. 2V- 11. 5V13. 7V0V8. 7V(REC)- 13. 4V28. 6V- 13. 7V- 19. 5V0. 4V0. 4VOTHER:12.4VREC:0VOTHER:0VREC: 4.9V0V0V2. 4V4. 9V4. 8V0V4. 9V0V0V4. 9V4. 9V4. 6VREC: 4.9V400: 4. 9V 12. 5K: 0VON:0V OTHER: 4.8V2. 5V2. 5V0V0. 6V0. 6V4. 6V4. 6VOTHER: 0V5. 0V5. 0V4

43、. 9V4. 9V2. 2K2. 2K5. 0V0V5. 0V0V4. 9VHI SPEED: 0VNORMALSPEED: 4. 9VHI SPEED: 11. 9VNORMAL SPEED: 0VB. MOTORON: 0. 7VOFF:0VHI SPEED: 0VNORMALSPEED: 4. 6VA. MOTORON: 0. 7VOFF: 0VREC: 0VOTHERDUBBING: 0. 7VREC: 0VOTHERDUBBING: 0. 7VA. PLAY: 4.8VNORMAL SPEEDOTHER: 0VHIGH SPEED6. 0V6. 0V0. 3V6. 0V6. 6V6.

44、 6V6. 0V6. 6V6. 6V6. 0V6. 6V6. 6V6. 0V5. 8V6. 1V6. 0V6. 0V6. 0V1. 9V1. 7V6. 0V6. 0V6. 0V6. 0V6. 1V6. 2V6. 2V6. 2V6. 1V1. 7V1. 8V4. 9V+ B L INE- B L INE100160.1X28 - (C/ 8 )X28- ( F / 8 )ASIGNAL L INEGND L INEX28- 278x - x xRECORDING L INEX28- (H/ 8 )X28- (C/ 8 )X28- (H/ 8 )Q45Q46Q47Q48Q19Q21Q22Q14BO

45、TTOM V IEW- COMI C6I C6Q67Q68D37Q66D17D16D15D14D20D18Q57IC9D19Q56D4CN4D12 D11 D10D13D6D5WH5WH4WH3J3SYSTEMD23D24D26D25D30D29D27D28Q20Q23Q13I C10P-ROMD21I C8D22Q58CN1CONTROLI C1D7ANOR SPCrO2: ONCN7D9D8Q55Q541/ 22 / 2Q62D34Q60Q64Q61D33Q59Q63Q65Q12Q11D672/2TO X28 CN8J 7( M TYPE )WH6WH7CN1WH6WH7( K, E TY

46、PE )WH1PH DET( SYSTEM ICOSC,PBEQ)PHONE+12V AVRRESETREC MUTE70SW400 / 12. 5KSELECTOSCLEVEL7 0 SWPOWER SUPLLYA. N/ H SWTEST MODEUNIT NO.MODELNAMEABB.DESTINATIONCOUNTRYEUROPEGENERAL MARKETUSAK1Q2944, 49D2132, 137144R127, 128, 131C93, 94UNIT NO.MODELNAMEABB.F1CN14, 15W221111, 142,C89, 90, 105C13, 140 -

47、102 - 710 - 21EUROPEGENERAL MARKETUSA0 - 112 - 720 - 22YES470P220PNO680P150P0 - 102 - 710 - 210 - 112 - 720 - 22MT, E, E1K, PY, MX,T,E,E1K, PNOYESYESNOYESNONOYESYESNO222224W29, 47, 5161, 65227KXF-W6010/(E)Y, MX, T, EK, PY, MX, T, E, E1K, PR262W45KXF-W4010/(E)KXF-W6010/(E)KXF-W4010/(E)R262 8.2*W45CT-

48、2050CT-2050CT-203CT-203C109R157C108R156C1070. 0122K5600P22K5600PR15910 1 / 4WR15810 1 / 4WR155C110180 1/ 4W10501234567545556575859606162636465666768697071727374757677787980DOLBYB /C NR(R-CH)1A5BITDACE.VOLGND5BITDACE.VOLDOLBYB /C NR(L- CH)1AVrefC600. 150C580. 150C562200PR58560C542200PR64C742. 250C721

49、050C522200P22KR56L410mHC50220PMPXNCR525. 6KR502. 2KR9218KC46C42C44150150150MPXNCR515. 6KR492. 2KR63C732.2 50C711050C590. 150C570. 150C552200PR57560C532200PR5522K2200PC51C49220PL310mHR532.2 K0. 027C47R96R97C83130K6. 2K3300P0. 1C84R991. 2KR9811KR9422KR483. 9KC43150C41150C45150C851501234567891011121314

50、151617181920212223242526272829303132333435363738394041( 42 )43444546474849505152535455565758596061626364656667686970717273747576777879806G5G4G3G2G1GVFDPVDDNCA R/PERASEB R/PNCCEPHBPHACWCCWNCIN MUTEOSC OUTS. BUSYS. DATACLKSTBDATA400 /12. 5KREADNOR/A. BIASKR1KR2KR3KR4KR5PLAY A/BDATACLKR.MUTEL.MUTELEVEL