Kenwood-KRC-19-A-Service-Manual电路原理图.pdf

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1、CASSETTE RECEIVERKRC-19A/GSERVICE MANUAL 2000-11 PRINTED IN KOREAB51-7688-00 (K) 1755KRC-289AUD123456CLKATTSRCPWROFFAMEADJAUTOT.C/D.SCNLOUDCRSCA.ADJFMAMFFREWPROGKRC-289CD/MD-CHANGER CONTROLAUD123456CLKATTSRCPWROFFAMEADJAUTOT.CALLLOUDCRSCA.ADJFMAMFFREWPROGKRC-19AUD123456CLKATTSRCPWROFFAMEADJAUTOT.CAL

2、LLOUDCRSCA.ADJFMAMFFREWPROGKRC-19REPRDMSCANM.RDMDISC+-HIGH POWER 40Wx40Wx4HIGH POWER 40Wx40Wx4HIGH POWER 40Wx40Wx4ANTENNAADAPTOR(T90-0523-05or T90-0534-05): KRC-19A/GDC CORD(E30-4784-05):KRC-289STAY(J54-0606-04):KRC-289SCREW SET(N99-1610-15): KRC-289PLASTIC CABINETASSY(A02-1486-13)LEVER x2(D10-3031-

3、04)MOUNTING HARDWARE ASSY(J21-9491-13)KRC-289KRC-19GKRC-19ASCREW SET(N99-1632-05): KRC-289DC CORD(E30-4790-05):KRC-19A/G40%KRC-19A/G,2892BLOCK DIAGRAMIC1KEYPAN 5VMUTEB.U. DET. B.U.ACCP-CONT.MUTEPREPOWER ICEQ. AMP.CH ISO AMPNC/MPXE-VOL.CD/MDCHANGERFRONT LchFRONT RchREAR LchREAR RchJ2LCD DRIVERLCDMAIN

4、TAPE MECHA.IC51 Lch2 RchPRE OUTIC2IC4IC3,Q153SP OUTREARJ4RSTPAN IN SWANT-CONT.P-CONT.J2Q370,371Q450,451Q50Q350-353Q58-61Q54-57Q53Q320Q301Q51,52J5IC1ED1FM+BQ200,201AM+BQ202,203AM BPFFM BPFSW 5V8VILLUMI.B.U.5VSYSTEM u-COMRST SWANT-CONT.FM ANTAM ANTRF GNDFM+BAM+BOSC GNDOSC GNDOSC GNDVTPLL +BIFC OUTSDAS

5、CLDIG GNDIF1+BIF1 GNDS-METERIF2 GNDSDFM+BSW5VACC DETB.U. DETSCLMUTESDAP CONPANELHOLDLCLKLDATASLDATALFWD/REVMOTORCH CONDATAHDATACREQ HREQ CCH CLKRchCOMLchTAPEMP INAMMPXOUT RROUT LROUT RFRchLEVELSCLSDAOUT LFRchSTBYMUTERchLchT-MUTEFWDREVB.U.5VB.U.8VB.U.CHRSTS MUTE8410B.U.5VAM+BVDD 5VPACK INL CEANT CONC

6、HMUTEBEEPSVRAMP. STBYSVRAC GND (BEEP)Lch LchRchLch1200mVTAPE :1681mVCD/MD-CH :3529mVAM :546mVFM :1781mV8VRF GNDOSC GNDIF2 +BAUDIO OUT8VS-METERSDPLL CLKPLL DATAHEADPLAYR55.6mVBU5VSW5V8VB.U.5VAM: 170mVFM: 400mVLPACK IN(FF/REW)AMP. MUTEFF/REWBU5VILL(X13)MKRC-19A/19G/289KRC-289KRC-289F/EMOTOR SWQ260,261

7、ACC. DET.5V3KRC-19A/G,289COMPONENT DESCRIPTIONRef.No.Component NameApplication/FunctionOperation/Condition/CompatibilityIC1LC75853ELCD driver with key-matrixQDTA114EK or UN2111Key-matrix permission SWReady on key-matrixRef.No.Component NameApplication/FunctionOperation/Condition/CompatibilityIC1LC72

8、366-9592System MI-COM.System controlIC2TDA7461NDE-VOL. & N.C. MPXControls sound volume. Selects each source.IC3HD74HC27FPMute logic3-input NOR gate x 3IC4TDA7384APower ICAmplifies power so that the speaker can drive audio signal.IC5LA3161Equalizer amplifierEqualizer amplifier for cassette tape sound

9、Q502SC2412K or 2SD601ABACK-UP detection (MomentaryWhile BACK-UP is added, a base becomes Hi,power down detection) SWand Q50 is turned on.Q512SB1443BACK-UP 5V AVRWhile BACK-UP is added, AVR outputs +5V.Q522SC2412K or 2SD601AInverted Darlington connection.Q53DTA114YKP.ON 5V SWWhile a base becomes Lo,

10、Q53 is turned on.Q54DTC144EK or UN2213COM+B SWQ55 is turned on while Q54s base becomes Hi. Q55DTA124EK or UN2112Works during POWER ON mode.Q562SB1548(P) or 2SB1565(E,F)Q56 is turned on while Q57s base becomes Hi.or 2SB1655(E,F)COM+B AVR Q572SC2412K or 2SD601AInverted Darlington connection.Q58DTC144E

11、K or UN2213Q59 is turned on while Q58s base becomes Hi. Q59DTA124EK or UN2112ILLUMINATION +B SWWorks during POWER ON mode with a panel attached to the set. Q602SB1548(P) or 2SB1565(E,F)Q60 is turned on while Q61s base becomes Hi.or 2SB1655(E,F)ILLUMINATION +B DRIVER Q612SC2412K or 2SD601AInverted Da

12、rlington connection.When BACK-UP detection SW or CHANGER Q150DTC124EK or UN2212ELECTRIC VOLUME MUTE SWRESET SW or MI-COM.s mute works, a basebecomes Hi, and Q150 is turned on.Q151DTC114YK or UN2214SVR DISCHARGE SWWhen POWER IC RESET is activated, a base becomes Hi, Q151 is turned on.When BACK-UP det

13、ection SW or CHANGER Q153DTA124EK or UN2112PRE OUT MUTE DRIVERRESET SW or MI-COM.s mute works, a basebecomes Lo, and Q153 is turned on.Q200DTC124EK or UN2212FM +B SWQ201 is turned on when Q200s base becomes Hi.Q2012SB1277(Q,R)FM +B DRIVERWorks during FM reception mode.Q202DTC124EK or UN2212AM +B SWQ

14、203 is turned on when Q202s base becomes Hi.Q2032SB1277(Q,R)AM +B DRIVERWorks during AM reception mode.Q260DTC114YK or UN2214MOTOR +B SWQ261 is turned on when Q260s base becomes Hi. Q2612SB1443MOTOR +B DRIVERWorks during TAPE mode.Q301DTA144EK or UN2213CHANGER RESET SWWhen a base becomes Lo, Q301 is

15、 turned on.Q3202SA1037KPANEL 5V SWWhile a panel is attached to the set, a base becomes Lo, and Q320 is turned on.Q3502SB1277(Q,R)P-CON. DRIVERQ350 is turned on when Q353s base becomes Hi.Q3512SA1037KP-CON. PROTECTION SWWorks when P-CON is being short-circuited on GND.Q352DTA124EK or UN2112P-CON. PRO

16、TECTION Inhibits protection SW function when P-CONINHIBIT SWworks momentary.Q353DTC114YK or UN2214P-CON. SWQ353 is turned on when a base becomes Hi.Works during POWER ON mode.Q3702SB1277(Q,R)ANT-CON. DRIVERQ370 is turned on when Q371s base becomes Hi. Q371DTC114YK or UN2214ANT-CON. SWWorks during TU

17、NER mode.When BACK-UP detection SW or CHANGER Q450DTC143TK or UN2216PRE OUT MUTE SW(R ch.)RESET SW or MI-COM.s mute works, a base becomes Hi, and Q450,451 are turned on.Q451DTC143TK or UN2216PRE OUT MUTE SW(L ch.)SWITCH UNIT(X13-965X-XX)SYNTHESIZER UNIT(X14-6570-2X)Pin No.Pin NameI/ODescriptionProce

18、ssing Operation1XINIMain clock resonator connection terminal2GND-TEST terminal 2Connected to GND lines.3LDATA LIData input from the LCD driver IC4LDATA SOData output to the LCD driver IC5LCLKOClock output to the LCD driver IC6LCEOCE output to the LCD driver IC7SDAI/OData input/output with the E-VOL.

19、 IC8PLL DATAI/OData input/output with the F/E9PLL CLKOClock output to the F/E10SDISD input from the F/EHi : Station detected11DATA CIData input from changers12DATA HOData output to changers13CH CLKI/OClock input/output with changers14ON.C.(Not used)15MOTOROCassette motor on/off outputHi : Motor ON16

20、SCLOClock output to the E-VOL. IC17-24ON.C.(Not used)25AM+BOAM+B ON/OFF outputHi : during AM reception26FM+BOFM+B ON/OFF outputHi : during FM reception27PACK INICassette tape Pack-in detection inputLo : Pack-in28FF/REWIFF/REW detection inputLo : FF/REW, Hi : PLAY29GNDIConnected to GND lines.30GNDICo

21、nnected to GND lines.31VDD-VDD connection terminalConnected to B.U. 5V lines.32REQ CIRequest input from changersLo : Request33MUTEOAudio mute on/off outputHi : Mute ON34CH CONOChanger controlLo : Standby, Hi : ON35REQ HORequest output to changersLo : RequestWhen the momentary power down, after 36SVR

22、OPower IC reset terminalACC ON/OFF is detected and after POWEROFF, the output becomes Hi temporarily.37AMP STBYOPower IC standby control outputHi : POWER ON mode38AMP MUTEOPower IC mute controlLo : Mute39P CONOPower controlHi : POWER ON mode40ANT CONOAntenna controlHi : during FM/AM reception41SW5VO

23、SW 5V controlLo : POWER ON mode42ILLOIllumination AVR ON/OFF control terminalHi : POWER ON mode43ON.C.(Not used)44BEEPOBEEP sound output45-47ON.C.(Not used)48ROLL OFFIRoll off inputPull down to GND lines. (Not used)49NOISE CANCELLERINoise canceller inputPull down to GND lines. (Not used)50SEL1IDesti

24、nation input 1Lo : KDC-19A/G, Hi : KDC-28951SEL2IDestination input 2Pull down to GND lines. (Not used)52ON.C.(Not used)53EQ MUTEOTape equaliser mute on/off outputN.C.(Not used)54FWD/REVIFWD/REV detection inputLo : REV mode55ON.C.(Not used)56REMOIData input from the remote controllight Pull down to G

25、ND lines. (Not used)sensor57-60ON.C.(Not used)61ACC DETIACC detection inputHi : ACC ON4MICROCOMPUTERS TERMINAL DESCRIPTION9KRC-19A/G,289Terminal Description IC1 : MI-COM. (X14-)5KRC-19A/G,289MICROCOMPUTERS TERMINAL DESCRIPTIONTEST MODEPin No.Pin NameI/ODescriptionProcessing Operation62B.U.DETIMoment

26、ary power down detection inputHi : When momentary power down detected or B.U. OFF, Lo : B.U. ON63S METERIS-meter input from the F/E64PANELIPanel detaching detection inputLo : Panel not detached65GNDIConnected to GND lines.66GNDIConnected to GND lines.67HOLDIMI-COM. HOLD inputLo : Hold68VDD-VDD conne

27、ction terminalConnected to B.U. 5V lines.69GNDIConnected to GND lines.70GNDIConnected to GND lines.71,72ON.C.(Not used)73VDD-VDD connection terminalConnected to B.U. 5V lines.74GNDIConnected to GND lines.75GNDIConnected to GND lines.76VSS-Ground connection terminalConnected to GND lines.77,78ON.C.(N

28、ot used)79GND-TEST terminal 1Connected to GND lines.80XOUTOMain clock resonator connection terminal1. How to enter the test mode Reset the unit while holding the “FM“ key and preset “6“ key. All indication segments go ON at the beginning of the test mode.2. How to release the test mode Simply reset

29、the unit. (NOTE) The test mode is not canceled by ACC OFF, power OFF, momentary power down or the panel off.3. Audio adjustment Set the volume level to -10dB (which is shown as “30“ on the display). Loudness OFF. The BASS / TREBLE and BALANCE / FADER controls can be set to the full boost / full cut

30、and full right / full left and fullfront / full rear respectively by pressing the “Track Up“ / “Track Down“ keys. Sound coordination doesnt appear for the feed.Terminal Description IC1 : MI-COM. (X14-)6KRC-19A/G,289ADJUSTMENT/EINSTELLUNGEN (MECHA.)Einstellung des KopfwinkelsVorgehensweise bei der Ko

31、pfhhen-Einstellung Whrend des Bandlaufs in Vorwrtsrichtung die Schrauben Fund F soeinstellen, da die Linie A eines 2-Linien-Bands (2-LINE TAPE) durch dieMitte der Kopfabschirmplatte (Zentrum des Mittelbereichs) verluft. Whrend des Bandlaufs in Rckwrtsrichtung die Schrauben Rund R soeinstellen, da di

32、e Linie B eines 2-Linien-Bands (2-LINE TAPE) durch dieMitte der Kopfabschirmplatte (Zentrum des Mittelbereichs) verluft. Nachdem die obige Einstellung abgschlossen ist, die Bandlaufrichtungumkehren und die Ausrichtung in Vorwrtsrichtung noch einmalberprfen. Wenn eine Abweichung festgestellt wird, is

33、t diese Einstellungzu wiederholen. (Verwendetes Band: SCC-1659, hergestellt von A-BEX)Head Angle AdjustmentHead height alignment procedure During FWD transport adjust screws Fand F so that line A of 2-LINETAPE passes trough the center of the head shield plate (core center area) During RVS transport

34、adjust screws Rand R so that line B of 2-LINETAPE passes trough the center of the head shield plate core (center area) After the alignment above, reverse the transport direction and check theFWD alignment again. If it is deviated, perform alignment again. (Tapeused : SCC-1659, manufactured by A-BEX)

35、(2-LINE TAPE)BABA(FWD)(RVS)HEIGHT(FWD)HEIGHT/AZIMUTH(FWD)HEIGHT/AZIMUTH(RVS)TAPE SPEEDHEIGHT(RVS)FFRRACEGIBDFHJ2 1357 46Refer to the schematic diagram for the value of resistors and capacitors. PC BOARD (Component side view)78R13R14R18R8R1 1R12R19C4C2C1C5R3R4R2R1R21R20R5R6C6644932173348116111212EBQ1

36、IC1D17J1D15D13D12 D11D10D9D8D7D6D5D4D3D2D1D14ED1X13-965X-XX (J74-0963-42)PL2 PL112 9AT TVOLSRCAUT O C LK1 2 3 456 R S TAUDFMAMW122R58R155R15W112R14R62W113R152R129R59W133W119R413C202R16R13W 111W121R372R151C101R324C163R161W135R102R1 18R119R115R1 14R126R52R54R105R106R103R207R206C164R352R320C155C154C157

37、C156C153C151C506R127R154R150R153R322R401R400R408R409R407R406R412R410R41 1R303R304R306R305R403R301R402R321W129C54R63R64R57W1 14C52W116R201R203R200C200C452C201R205R455R453R454R451R450R452R104C1C2C6C5C7 C8R6R7R5R2R3R4C14R8C13R1C251R251R323W131W125C102C103W128W130R160W124W118R158W117W115W123R157R156R159

38、R250R405R404R137W134W120R122R125R120R121R123R 111R109W126R1 10W127R108W132R131C321C351TH1C60012814 15148 71252440416465801EBEBEBEBBEEBBEBEBEBEEBBEEBEBBEEBEBBEEBEBEBBEEBQ61Q52Q371Q59Q58Q57Q153Q151Q150Q55Q54Q53Q50Q353Q301Q320Q352Q351Q202Q200Q451Q450Q260IC3IC2IC1REMOGNDW100W28W75W85W22W33W73W67W72W65W1

39、3W96W35W36W68W64W15W8W31W71W69W27W79W76W34W39W43W46W51W98W99W23L3R50R65R351R353R66W48W10X1C50C17C18C160C152C55W40W20C15C16C161C350C352C162C450C451C150C159C56C58C53C57W58W94W95W101W54W41W53W29W12W16W18W7R261L5/W200R260L4C402C400C401W5W14W17W11C4C3C9C250C10W92W9W70W59W30 W25W50W24W87W80W97W93W89W88W10

40、3W86W90W78W61W3 W2 W1W56W82W44W47W83W19W74W81W49W77W37W63W32W55W102W57W52W60W62W38W84W42W21W454.5MR202R55R67W104 R350R370W105R371L8C206L9R373R1 16W26L1C320R138R132LR124BEBEEB12611111228 15 1EBBEBEEBE B18169122524X14-6570-2X (J74-1190-12)CN1Q60Q56D411D405D352J5Q51Q350D401D400D56D52D51D55D54D402D408D4

41、09 D403D350D351D53Q201Q203D200Q261D404D260IC5J2D370IC4D50Q370J4D371A1D151D150D152P1WH1D100J3CN2J1D261Ref.No.ADDRESSIC15BQ14BX13-965X-XXRef.No.ADDRESSIC15GIC25EIC35FIC42GIC55IQ504HQ514IQ524IQ534IQ543IQ553IQ562JQ573IQ584JQ594IQ603JQ613JQ1504EQ1513FQ1533DQ2004EQ2014EQ2024EQ2034EQ2606EQ2616EQ3016HQ3206H

42、Q3503GQ3513GQ3524GQ3534HQ3703GQ3714GQ4503DQ4513EX14-6570-2XKLNPRTMOQS2 1357 46Refer to the schematic diagram for the value of resistors and capacitors.PC BOARD (Foil side view)109R4R5C6R611R1133 4832171649C4R19164R8BEC1C2C512R121R14R13R182R21R20R2 R3 R1Q1IC1J1D17D13D12D15D14D11D10D9D8D7D6 D5ED1D3X13

43、-965X-XX (J74-0963-42)D4D2D1SRC21ATTVOLPL21AUTO543CLK29RST6PL1AUDFMAMC452BR157W118W124W119W112C321EBR322R203W117R161R104W134C202R1 14R207R102R103C155C156 C157 C506C154R206C153R12614R150R1 18R127R131R1191R125R106R105W135R205EB15C151BEEBC1642814817R159W123R413R453C201 C200ER454EB R452R451R201R200BC163

44、R450W1 14W116W115R405ER455R402R41 1R410R412R409R408R400R401EBR404R403R406R407R152R13R16W 111W133R320R324C14R301R305R304R303R306R323EBR321W131EBC13EBBEW120C54R129R25025801C10224W132W128R160C103W129W130R11565C101R13764R108R122W12540R1 1041R156R158R109R1 1 1W126R121R123W127R120R59C2C5R5R3R7C7R8C8R1C1C2

45、51R6R4C6R2R251BEEBEBR154R155C351EEBBBER352R372R151R57W121R54C52R52R58R153W113W122BEBEEBR63R62BER64BETH1C600R14R15Q260Q200Q202IC2Q150IC3Q450Q153Q451Q151Q301Q320Q352Q353Q50Q52IC1Q371Q59Q58Q351Q55Q61Q53Q54Q57W58W2W5W3R2611 6R260BEW27EW31L9 L8GNDREMO2 1W124C206W49W47W44W14R1 16W9W10W26W17W15W30 W24W25W3

46、7W38W45W42W48W40W52W55W22W11L3W8R202W105BC150C152W32W35W23W361 L5/W200L4C401C402W21 C450BEW13W20W18W16W7C451C18C15C17W50C16W34W46W43W39W51C400W19LRW12W33W28C160C159214.5MW56W65212111W70W78C320W82W93C9W57C10W85X1R138W83W92C250W59W60W62W63W84W81W90W87W89W88W77W74W80C352C55W86C38C45W971R1321W102W103C56

47、W100W61R373R371R353BEBC350ER351R370R50EBW104R55R350C53C162C161W71W68W67W6924W7225W76W75W79C50W7381W98W96R67C57C58W94W95W99BER65R66BL1EW29W41W64W54W53169W101Q261D260P1Q203CN2WH1D200D261Q201A1J1D409D402D400D401D404D405D411D403J5D408J3D352D100IC5CN1D152D150Q370D151Q350D371D52D351D54D370D350D51D53Q51D56

48、D55Q60Q56D50J2X14-6570-2X (J74-1190-12)J4IC4Ref.No.ADDRESSIC15LQ14LX13-965X-XXRef.No.ADDRESSIC15PIC25RIC35QIC42QIC55NQ504OQ514OQ524NQ534NQ543OQ553OQ562NQ573NQ584NQ594NQ603NQ613NQ1504RQ1513QQ1533SQ2004RQ2014SQ2024SQ2034SQ2606RQ2616RQ3016PQ3206OQ3503PQ3513PQ3524PQ3534PQ3703PQ3714PQ4503SQ4513SX14-6570-

49、2XGIFHKJMLONACEBD2 1357 46KRC-19A/G,2890V0V 5V0V 5V0V 5V0V 5V5.0V10.2V5.0V5.0V14.4V14.2V8.2V0V5V 5V0V0V5V5V0V0V0V5.0V0V 5V5V0V5V0V0V5V5V13.6V14.4V14.4V14.4V13.6V10.2V0V0V or 5.0V5V0V5V0V5V0V0V5.0V0V5.0V0V0V0V0V1.3V0.8V3.5V0V8.2V3.5V0.8V1.3V0V7.3V4.9V7.3V14.4V7.3V0V7.3V7.3V7.2V7.2V0V7.2V7.2V7.3V7.3V0V7.3V14.4V7.3V3.3V7.3V0V5V0V0V5V0V5V0V5V0V5V0V5.0V4.0V4.0V4.0V4.0V4.0V4.0V4.0V4.0V4.0V4.0V4.8V4.0V0V 5V0V5V0V8.2V8.2V8.2V8.2V8.2V8.2V3.8V(FM),3.5V(AM)8.2V 5.1V3.4V0V4V0V4V0V5VB LINEAM+B134 3128 7112 1610591923 202122AUDIO OUTSDS-METERIF1+