Kenwood-KDC-519-Service-Manual电路原理图.pdf

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1、 2001-11 PRINTED IN JAPANB51-7868-00 (S) 3420SERVICE MANUALCD RECEIVERKDC-5019/519/8020KDC-7021/7021Y/B7021This service manual does not include information on the CD mechanism assembly (exploded view, parts list,schematic diagram or mechanism operation description).For such information, please refer

2、 to the CD mechanism assembly service manual (X92-4030-0X, X92-4440-0X: B51-7867-00).Front glass(B10-4157-01)Panel assy(A64-2578-02)Front glass(B10-4158-01)Panel assy(A64-2579-02)KDC-5019 KDC-519Front glass(B10-4162-01)Panel assy(A64-2583-02)Front glass(B10-4160-01)Panel assy(A64-2581-02)KDC-8020 KD

3、C-7021/YFront glass(B10-4163-01)Panel assy(A64-2584-02)KDC-B7021DC cord(E30-4942-05): KDC-7021Y(E30-4956-05): KDC-7021/B7021Antenna adaptor(T90-0523/0534-05)KDC-7021/7021Y/B7021 onlyScrew set(N99-1704-05)Screw set(N99-1722-05)Bracket (L)(J19-5051-03)KDC-5019/519/8020 onlyBracket (R)(J19-5052-03)Leve

4、r(D10-4562-04)x2(D10-4621-04)x2: KDC-7021/B7021Mountinghardware assy(J21-9716-03)Torsioncoil spring(G01-2924-04)Plasticcabinet assy(A02-1497-13)Remotecontroller assy(A70-2025-05)Remote controller assy(A70-0886-15)Escutcheon(B07-3010-02)DC cord(E30-4940-05): KDC-5019/519DC cord(E30-4939-05): KDC-8020

5、lKDC-5019/519/7021/7021Y/8020/B70212BLOCK DIAGRAMPLL+BFM+BQ43,44Q45,46AM+BDIMMERMUTE2WAYDET.ACCBU DET.A8VA8VQ4-6IC3Q9Q7,8Q10-13SERVO AVRSERVO+BSW5VQ3Q50,51Q30Q1,2SW5VBU5VBU5VP CONANT-CONQ26-29MUTEIC8Q32,33,35DRIVERMUTEQ37-40POWER ICIC4SYSTEM MI-COMCDCHF/EA1,Q53E-VOLIC2PRE OUTSP-OUTDIMMERTEL-MUTEACCA

6、NT-CONTQ24,25P-CONTBACK UPA-CONTP-CONTDECODERRDSIC1IC14Q52EX.AMP CONTROLILLUM+BRESETSWRESET ICIC16IC2IC1 Q7Q3,4Q5LCDDRIVERREMOG/R SW DIMMERSWBUFFERNOISEQ36OUTPUT VOLTAGECONTROLEX.AMPQ14Q15Q31(E,Z) TYPE(E,Z) TYPE(E,Z) TYPE(K,M) TYPENAVI-MUTEPANEL 5VPANEL 5VKEYMATRIXSW14VSRMMECHA.SRMDRIVERMOTOR(BACK L

7、IGHT)LCDED1CHQUALSERVO+BMUTE RSTOPSW2LO/EJMUTE LRSTSW3SW1SDASCLA8VBU5VSW5VRSTREQ CCLKCH-CONDATA HREQ HCDAMFMP MUTEMUTESW5VPANEL5VLDATALL CE L CLK LDATASDIMMERREMORESET ILL+B SRM SW1SRM DET SRM SW2 SRM SW3 SRM SUB-SRM SUB+RDCK RDDAQUALSDASCLAFSAFSA8VPLL DATAPLL CLKIFC OUTS-METERSW5VSW5VDATA CBACK UPB

8、U5VPANEL 5VCHANGERAMFM230mV1200mV1200mV251mV (E,Z) TYPE470mV (K,M) TYPEAUDIO OUTNOISECD 3600mV3600mV855mV1372mV3600mV3600mV600mV1800mVDRIVERMUTEMO SWLCDAVR(X16- )IC15(E,Z) TYPE(K,M) TYPE (E,Z) TYPEKDC-5019/519/7021/7021Y/8020/B70213COMPONENT DESCRIPTIONa71 SWITCH UNIT(X16-154X-XX, X16-1892-7X)Ref.No

9、. Component Name Application/Function Operation/Condition/CompatibilityIC1 LC75808W LCD driver with key matrixIC2 RS-171 Remote sensor ICQ1 DTA114EUA or KRA302 Key permission SW For the key scanning start and the key detection SWQ3 2SC4081 Red LED SW When a base goes Hi, RED LEDs are turned on.Q4 2S

10、C4081 Green LED SW When a base goes Hi, GREEN LEDs are turned on.Q5 2SC4081 VLCD AVR For LCD driver ICQ6 DTA114EUA or KRA302 REMO SW While a base goes Lo, PAN 5V is supplied to the Remote sensor IC.Q7 DTC143ZK Dimmer SWUsually Q7s base goes Hi. When DIMMER mode is selected, pulsewave shape is applie

11、d to Q7s base.a71 ELECTRIC UNIT(X25-939X-XX, X25-8762-7X)Ref.No. Component Name Application/Function Operation/Condition/CompatibilityIC1 UPD703033GC139 System MI-COM.IC2 TDA7407D E.VOL & N.C.MPX ICIC3 M5237ML AVR IC IC is combined with Q4, and it works as the error detection, the driver.IC4 TA8273H

12、 Power ICHD74HC02FPIC8 or TC74HC02AF Mute logic 2-input NOR x 4or 74VHC02SJIC14 TDA7479D RDS decoderIC15 LB1930M Motor driver ICIC16 S-80837ANNP Reset IC When BU 5V voltage is less than 3.7V, IC outputs Lo.Q1 2SB1548(P)BU 5V AVRWhile BACKUP is applied, AVR outputs +5V.Q2 2SC4081 or 2SD1819A Q1 and Q

13、2 are inverted Darlington connection.Q3 2SA1576A or 2SB1218A SW 5VWhile a base goes Lo, SW 5V is supplied to the microprocessorperipheral circuits.Q4 2SB1548(P) A8V AVR Q4 is combined with IC3, and it outputs +8.3V.Q5 DTC144EUA or UN5213A8V AVR SWA8V AVR ON/OFF controlQ6 DTA124EUA or KRA303 While Q5

14、s base goes Hi, Q6 is turned on, and A8V AVR is working.Q7 DTA124EUA or KRA303A8V AVR and SERVO +B AVR ON/OFF controlQ8 DTC144EUA or UN5213SW14V SW While Q8s base goes Hi, Q7 is turned on, A8V AVR and SERVO +BAVR are working.Q9 2SD2375 SERVO +B AVR When Q9s base goes Hi, SERVO +B AVR outputs +7.6V.Q

15、10 2SB1184ILL +B AVRWhile Q11s base goes Hi, AVR outputs +10.7V.Q11 2SC4081 or 2SD1819A Works during POWER ON mode with a panel attached to the set.Q12 DTC144EUA or UN5213ILL +B SWILL +B AVR ON/OFF controlQ13 DTA124EUA or KRA303 While Q12s base goes Hi, Q13 is turned on, and ILL +B AVR is working.Q1

16、4 DTA123JK or KRA105S EXT. AMP CON. SWWhen a base goes Lo, Q14 is turned on, and control pulse waveformshape is outputted.Q15 DTC144EUA or UN5213 Small lamp detection SW When vehicle small lamps turn on, Q15 is turned on .Q24 DTC114YUA or UN5214ANT-CON. SWWhen Q24s base goes Hi, Q25 is turned on.Q25

17、 2SB1277(Q,R) Works during the tuner reception mode.Q26 2SB1277(Q,R)P-CON SWWhen Q29s base goes Hi, Q26 is turned on .Q29 DTC114YUA or UN5214 Works during POWER ON mode.Q27 2SA1576A or 2SB1218A P-CON. protection SW Protect Q26 by turning ON when P-CON output is grounded.Q28 DTA124EUA or KRA303 P-CON

18、. protection inhibit SW Prevents Q27 tuning ON during start-up after power ON.While BACKUP is applied, a base goes Hi, and Q30 is turned on.Q30 2SC4081 or 2SD1819A BU detection SW When momentary power down has detected, a base goes Lo, andQ30 is turned off.Q31 2SC4081 or 2SD1819A ACC detection SW Wh

19、ile ACC is applied, a base goes Hi, and Q31 is turned on.Q32 DTA124EUA or KRA303 Mute driver for L Ch. When BU detection SW or System RESET or MI-COM.s Pre-mute isQ33 DTA124EUA or KRA303 Mute driver for R Ch. working, a base goes Lo, and Q32 and Q33 are turned on.Q35 DTC124EUA or UN5212 E. VOL mute

20、SWWhen BU detection SW or MI-COM.s mute is working, a base goesHi, and Q35 is turned on.Q36 2SC4081 or 2SD1819A Noise bufferKDC-5019/519/7021/7021Y/8020/B70214Ref.No. Component Name Application/Function Operation/Condition/CompatibilityQ37 DTC143TUA or KRC410 Audio mute SW (Front L) When Q37s base g

21、oes Hi, Pre-output is muted.Q38 DTC143TUA or KRC410 Audio mute SW (Front R) When Q38s base goes Hi, Pre-output is muted.Q39 DTC143TUA or KRC410 Audio mute SW (Rear L) When Q39s base goes Hi, Pre-output is muted.Q40 DTC143TUA or KRC410 Audio mute SW (Rear R) When Q40s base goes Hi, Pre-output is mute

22、d.Q43 DTC124EUA or UN5212FM +B SWWhen Q43s base goes Hi, Q44 is turned on, and A8V is supplied to the F/E.Q44 2SB1277(Q,R) Works during FM reception mode.Q45 DTC124EUA or UN5212AM +B SWWhen Q45s base goes Hi, Q46 is turned on, and A8V is supplied to the F/E.Q46 2SB1277(Q,R) Works during AM reception

23、 mode.Q50 DTC144EUA or UN5213PAN 5V SWWhile a panel is attached to the set, Q50 and Q51 are turned on, andQ51 2SA1576A or 2SB1218A BU 5V is supplied to the panel.Q52 2SC4081 or 2SD1819A Composite signal output bufferQ53 DTC144EUA or UN5213 IFC buffer Waveform shapingKDC-5019/519/7021/7021Y/8020/B702

24、15MICROCOMPUTERS TERMINAL DESCRIPTIONa71 IC1(ELECTRIC UNIT : X25-939X-XX, X25-8762-7X)Pin No. Pin Name I/O Description Processing Operation1 AM+B O AM+B control Hi: During AM reception2 FM+B O FM+B controlHi: During FM reception, Hi: During FM receptionif with RDS, RDBS3 AFS O Noise detection time c

25、onstant switching terminalHi: During FM reception, Lo: During FM seek orAF search4 PLL-DATA I/O Data input/output with F/E5 PLL-CLK I/O Clock output to F/E6 EVDD - Positive power supply connection terminal Connected to BU 5V lines.7 EVSS - Ground connection terminal Connected to GND lines.8 N.C. O N

26、ot used(N.C.)9 BEEP O BEEP sound output10 REMO I Data input from the remote control light sensor11 PRE-MUTE L O Pre-out mute control (L)When M MUTE L input is Lo during CD sourceselected, PRE MUTE L outputs Lo.12 PRE-MUTE R O Pre-out mute control (R)When M MUTE R input is Lo during CD sourceselected

27、, PRE MUTE R outputs Lo.13 IC2-SDA I/O Data line with IC2,CD mechanism MI-COM.14 IC2-CLK O Clock line with IC2,CD mechanism MI-COM.15,16 N.C. O Not used(N.C.)17 DA-SDA / DIM-CON OData output to D/A converter(V-LED model) Data line with D/A converter/ Dimmer control output / Hi: Dimmer OFF, Pulse wav

28、e shape: Dimmer ON18 TEST - Test terminal Not used(Connected to GND lines)19 P-MUTE O Power IC mute control outputLo: Mute (during POWER OFF, ALL OFF, TELMUTE)20 P-STBY O Power IC standby control outputLo: Power IC OFF, Hi: Power IC ON, ALL OFFmode21 MUTE O IC2 mute control output OPEN(Hi): Mute ON,

29、 Lo: Mute OFF22,23 N.C. O Not used(N.C.)24 ACC-DET I ACC detection terminal Lo: ACC ON, Hi: ACC OFF25 DIMMER I Small lights detection input Lo: During vehicle small lamps turn on.26 SW5V O SW 5V control output Lo: POWER ON modeBass boost OFF_Hi: 160msec, Lo: 40msec27 EXT-AMP-CONT O External amp. con

30、trol output Bass boost LOW_Hi: 130msec, Lo: 70msecBass boost HI_ Hi: 100msec, Lo: 100msec28 P-CON O Power control output Lo: POWER OFF mode, Hi: POWER ON mode29 ANT-CON O Antenna control output Hi: During TUNER mode or TI reception30 P-ON O SW 14V control output Hi: POWER ON mode31 RESET I Reset inp

31、ut terminal Lo: System reset32 XT1 I Sub clock resonator connection terminal Clock count during POWER OFF mode33 XT2 - Sub clock resonator connection terminal34 REGC -Capacitor conection terminal for regulator insidemicroprocessorOscillation: POWER ON mode, Oscillation stop:35 X2 - Main clock resona

32、tor connection terminal POWER OFF mode or momentary power downdetected36 X1 I Main clock resonator connection terminal37 VSS - Ground connection terminal Connected to GND lines.38 VDD - Positive power supply connection terminal Connected to BU 5V lines.39 CLKOUT O Internal system clock output Not us

33、ed(N.C.)40,41 N.C. O Not used(N.C.)42 TYPE0 I Destination type selection terminal 043 TYPE1 I Destination type selection terminal 144 TYPE2 I Destination type selection terminal 245 N.C. O Not used(N.C.)46 IC2 TYPE0 I IC2 setting terminal Lo: Initial value47 IC2 TYPE1 I IC2 setting terminal Lo: Init

34、ial value48 CH-REQH O Request output to changers Lo: RequestKDC-5019/519/7021/7021Y/8020/B70216MICROCOMPUTERS TERMINAL DESCRIPTIONPin No. Pin Name I/O Description Processing Operation49 CH-RST O Reset output to changers : Reset50 CH-MUTE I Mute request from changers Hi: Mute request51 CH-CON O Chang

35、er control Lo: Standby mode, Hi: Operation mode52 ILL-ON O Illumination AVR on/off control output Hi: POWER ON mode except panel detached53 M-MUTE L I Mute request (L Ch.) from CD MECHA. MI-COM. Lo: Mute request54 M-MUTE R I Mute request (R Ch.) from CD MECHA. MI-COM. Lo: Mute request55 BVDD - Posit

36、ive power supply connection terminal Connected to BU 5V lines.56 BVSS - Ground connection terminal Connected to GND lines.57 M-RST O Reset output to CD mechanism MI-COM. Lo: Reset58 M-STOP O Stop request to CD mechanism MI-COM. Lo: Stop mode, Hi: Operation mode59 N.C. O Not used(N.C.)60 LO/EJ I/O CD

37、 mechanism loading/Eject switching output Lo: Loading, Hi: Eject, Hi-Z: Stop or Break61 MOSW O CD mechanism loading motor control output Hi: CD loading/eject action or Break, Lo: other62 N.C. O Not used(N.C.)63 CD-SW3 I Down & limit switch detection input Hi: Chucking, Lo: Pickup most inner position

38、64 DA-SDA/NC O Clock output to D/A converter (V-LED model) Lo: Panel detached, momentary power down detected65 LCE O CE output to LCD driver IC66-69 N.C. O Not used(N.C.)70 AV CONT O A/D converter reference voltage control output Hi: Active, Connected to AVREF terminal71 AVDD - A/D converter positiv

39、e power supply connection terminal Connected to BU 5V lines.72 AVSS - A/D converter ground connection terminal Connected to GND lines.73 AVREF I A/D converter reference voltage input terminal74 PHONE I PHONE detection input 1V or less: TEL MUTE, 2.5V or greater: NAVI MUTE75 SRM-SW3 I Mask mechanism

40、position SW3 input Panel: (SW1,SW2,SW3)=(Lo,Lo,Hi)76 SRM-SW1 I Mask mechanism position SW1 inputAngle: (SW1,SW2,SW3)=(Hi,Hi,Lo)Eject: (SW1,SW2,SW3)=(Hi,Hi,Hi)77 SRM-SW2 I Mask mechanism position SW2 input Mask : (SW1,SW2,SW3)=(Lo,Lo,Lo)78 SRM-DET I Mask mechanism detection input Lo: Mechanism detect

41、ed, Hi: mechanism not detected79 NOISE I FM noise detection input80 S-METER I S-meter input from F/E81 R-DATA I Data input from the RDS decoder ICExcept RDS, RBDS model: Not used(pull down toGND lines)82 R-QUAL I Quality input from the RDS decoder ICExcept RDS, RBDS model: Not used(pull down toGND l

42、ines)83 IFC-OUT I F/E IFC OUT input terminal Lo: Station detected, Hi: Not detected84,85 N.C. I Not used(pull down to GND lines)Standby: (SRM+B,SRM-B)=(Lo,Lo)86 SRM-B O SRM mechanism submotor control outputClock wise: (SRM+B,SRM-B)=(Hi,Lo)Counter clock wise: (SRM+B,SRM-B)=(Lo,Hi)Break: (SRM+B,SRM-B)

43、=(Hi,Hi)87 R-CLK I Clock input from the RDS decoder ICExcept RDS, RBDS model: Not used(pull down toGND lines)88 CH-REQC I Request input from changers Lo: Request89 KEY-REQ I Communication request from LCD driver IC90 CD-SW1 I Loading SW detection input Lo: Loading start91 CD-SW2 I 12cm disc detectio

44、n SW input Lo: 12cm disc detected92 SRM+B O SRM mechanism submotor control output93 BU-DET I Momentary power down detection inputHi : When momentary power down detected or BU OFFLo : BU ON94 CH-DATAC I Data input from changers95 CH-DATAH O Data output to changers96 CH-CLK I/O Clock input/output with

45、 changers97 L-DATA L I Data input from the LCD driver IC98 L-DATA S O Data output to the LCD driver IC99 L-CLK I/OClock output to the LCD driver IC/Panel detaching detection input(LCD Driver) Lo: Panel attached100 PAN5V O Panel 5V control Hi: Panel attached, Lo: Panel detachedKDC-5019/519/7021/7021Y

46、/8020/B70217KDC-5019/519/7021/7021Y/8020/B70218TEST MODE TEST MODE / ATTENTION1. How to enter the test modeWhile holding the FM and Preset 6 keys, reset the unit.2. How to exit from the test modeWhile holding the Preset 6 key, reset the unit.(Note) The test mode cannot be terminated by ACC OFF,power

47、 OFF or momentary power down.3. Initial status in the test mode Sources : ALL OFF Display : All segments are lit. Volume : -10 dB (displayed as “ 30 “) Loudness : OFF CRSC : OFF regardless of the presence ofswitching function. SYSTEM Q : Flat4. Special display in Tuner modeWhen any of the following

48、messages is displayed in Tunermode, the F/E may be abnormal. “ TNE2P NG “: The EEPROM is set to the default(unstable values) because the F/E was shipped withoutpassing through the adjustment process, etc. “ TNCON NG “: Communication with the F/E is notpossible.5. Forced switching of K3IEach press of

49、 the Preset 6 key in Tuner mode should switchK3I from AUTO Forced Wide Forced Middle ForcedNarrow AUTO.The initial status is AUTO and the display shows thesemodes as follows. AUTO : FMA Forced Wide : FMW Forced Middle : FMM Forced Narrow : FMN6. Test mode specifications of the CD receiver Forced ejection is inhibited in the reset start operation.When the unit is reset while a CD is loaded in it, the CDis not recognized by resetting. Each press of the Track Up key jumps to the followingtrack numbers:No. 9 No. 15 No. 10 No. 11