Kenwood-KDCBT-742-U-Service-Manual电路原理图.pdf

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1、This product uses Lead Free solder.This product complies with the RoHS directive for the European market.KDC-BT6544U/UYKDC-BT7043UKDC-BT742USERVICE MANUAL 2009-1 PRINTED IN JA PANB53-0698-00 (N) 429CD RECEIVERTDF SPARE-PANELMAIN UNIT NAME TDF PARTS No. TDF NAMEKDC-BT6544U Y33-3072-71 TDF-BT6544UKDC-

2、BT6544UY Y33-3072-71 TDF-BT6544UKDC-BT7043U Y33-3070-21 TDF-BT7043UKDC-BT742U Y33-3070-10 TDF-BT97DPanel assyKDC-BT742U (A64-4735-02)Panel assyKDC-BT6544U/UY (A64-4736-02)Panel assyKDC-BT7043U (A64-4738-02)Mounting hardware assy(J22-0789-03)Lever(D10-7049-04) x2* DC cord(E30-6428-05)* Screw set(N99-

3、1757-15)* Escutcheon(B07-xxxx-xx)* Carrying case(W01-1710-05)* Screw (4x16)(N84-4016-48)Remote controller assy (RC-547)(A70-2085-15)Battery(Not supplied)* Plastic cabinet assy(A02-2755-23)* DC cord(E30-6671-05)KDC-BT742UBluetoothKDC-BT6544UBluetoothKDC-BT7043UBluetooth* Depends on the model. Refer t

4、o the parts list.2KDC-BT6544U/BT6544UY/BT7043U/BT742UBLOCK DIAGRAMSWITCH UNIT (X16- )CD MECHAELECTRIC UNIT (X34- )(X92-6360-00)FRONT-ENDA480 or A481LX BUSE-VOLPRE OUTPRE OUTPRE OUTIC200IC500IC301UPBACKRESETICBU5VP-CONANT-CONACC DETDIMMERSURGE DETBU DETQ32,33BU5VQ50-53ILLUMI+BA8VSERVOQ40-43SW5VQ30,31

5、P. CONANT CONDIMMERACCBACK UPLINE MUTESP OUT (FR)SP OUT (RL)SP OUT (FL)SP OUT (RR)REMOTE(SW)(FRONT)(REAR)WIREDTEL MUTEUSB5VBU5VSW MUTEILLUMI+BCNREMOTESW5VIC2ED1J1J520S3 S175Q110-113Q114,115Q130Q92D130Q93Q90IC10Q520AM+BQ480,481SWHI-SIDESERVOIC70IC150+B4V-PREQ81-83DSP5VIC303J420J1WH160Q441,461DRIVERMU

6、TEMUTEPREPOWER ICSYSTEM u-COMENCODERROTARY(LED)KEY ILLUMI KEYMATRIX1/2WRx2(with DRIVER)FLRESETSWPANDETPAN5VDECODERRDSJ400SW5VAM+BA8VDME1SERVOIC260IC302A4VD5VPAN5VBU5VA8VAM+BSW5VPAN5VFDCBT3.3V BT3.3VIC601Q20-23PRE+BDSP5V460,462450,451,Q440,442,DSPIC240ILLUMI+BA8VPRE+BDSP5VIC241MEMORYSW5VX92-6320-00or

7、X92-6360-00BU5VA600MODULEBLUETOOTHIC600LPFBT3.3VA8VUSB5VMICCN1FDCR74,Q5,21USB CN AUXJ3USB u-COMAUTHENTICATIONiPodLEVEL SHIFT3.3VROMCORRECTION5VJ4E2PROMFSTFM/AMAUX (ISO IN)CH (ISO IN)MDOFFSETMPX for RDSRSTPRE MUTEMUTE25P-IC MUTESTBYMUTE DC ERRDC DETWININAC OUTAC INI2CI2CCD3(W/O USB MODEL)(USB MODEL O

8、NLY)R520GND214-SEG 13-DIGIT3KDC-BT6544U/BT6544UY/BT7043U/BT742UBLOCK DIAGRAMBU1.5VBU3.3VSW3.3VDPU1CD PLAYER UNIT (X32-6260-00)BOARDMOTHER(X34- )EFACBTR COILFO COILAPCIC216.934MHzCLOCKIC3LOADING &MOTORDRIVERMOTORSPINDLES2S1S3SLEDMOTORDM1DM2X3Q7RF AMPSERVOMP3 DECODERWMA DECODER1Mbit SRAMPROCESSORAAC D

9、ECODER+LEVELSHIFTIC5iPodIC7REGBU3.3 /AUTHENTICATIONLEVELIC6SHIFTIC1u-COMQ5SWBU1.5VIC9SW3.3VREGQ3SWCLOCK9.000MHzX132.768kHzCLOCKX2IC4INVQ9MECHANISMVREF12EJE SWLOS SWLOE SWMOTORLO/EJAGNDTROFOODMOFMOLDSIGNAL A/B/C/E/FS.GNDS7.5VFOOTRODMOFMOCD DRIVE MUTESOSRAMSTBSIBUCKCCECD REQMSTOPBUCKCCEREQSOSIRSTMRSTL

10、chRchZ DETMUTE L/RDGNDDVSSBU1.5VSW1.5V D3.3VBU5VPDVBUS SWUSB+VBUS OCUSB-DATA SCD SIREQ AMRSTMSTOPCLKCD MUTEREQ MDATA MUSB D+USB D-USB VBUS SWUSB OCCD LOE LIM SWRVIN1/RVIN2DVCC3BPON DVSS DVCC3A PWECD SODSP REQCD CLKCD RSTZDET INCD SRAMSTBCEBSIF LRCKBSIF DATABSIF BCKBSIF GATEBSIF ST REQIPOD SDAIPOD SC

11、LAVSSA3.3V LOROBSIF ST REQBSIF GATEBSIF DATABSIF BCKBSIF LRCKGDS4KDC-BT6544U/BT6544UY/BT7043U/BT742U ELECTRIC UNIT (X34-629x-xx)Ref. No. Application / Function Operation / Condition / CompatibilityIC10 Audio 8V REF / Power Supply Outputs 1.27V.IC70 Digital AVR for Panel & USB Switching regulator for

12、 USB&VBUS and FDC (5V).IC150 Power Control SW USB power control switch with over current detection and protection.IC200 Power IC Amplifi es front L/R and rear L/R.IC240 DSP Digital signal processor.IC241 E2P Memory DSP setting memory.IC260 Source Selector & E-VOLSelects analog source & full source v

13、olume. Analog source: AM/FM, CH, AUX. Digital source is selected by CD mecha. (CD/USB) Speaker-out “DC-offset” detection and protection. (This function consists of IC260 and IC200)IC301 System -COM Reset Control Outputs Lo (system -COM reset) when detection voltage goes below 3.6V.IC302 System -COMS

14、ystem control including power management, panel control, AM/FM/CH/SOC control, external control and etc.IC303 Mute Logic Controls logic for muting.IC500 RDS & RBDS DecoderIC600 Bluetooth MIC Buffer MIC signal differential amplifi er.IC601 Bluetooth Module 3.3V AVR During active time, POWER is ON.Q10

15、12 Audio 8V AVR During active time, POWER is ON.Q2023 DSP5V AVR When the base of Q23 goes Hi, DSP5V AVR is ON.Q30,31 SW5V During active time, POWER is ON.Q32,33 BU5V AVR During active time, POWER is ON.Q4043 Servo AVR During active time, POWER is ON.Q5053 ILLUMI AVR During active time, POWER is ON.Q

16、90 BU DET SW Detects the backup voltage. If the backup is detected, it is ON.Q92 ACC DET SW Detects ACC voltage. If ACC is detected, it is ON.Q93 Surge DET SW Detects over-input voltage. If surge is detected, it is ON.Q110113 Power Cntrol OutputWhen the base of Q110 goes Hi, power control output is

17、ON. During active time, audio source is active.Q114,115 Power ANT SW During active time, tuner source is active.Q130 Small Lamp DET SW Detects small lamp. If small lamp is detected, it in ON.Q170 Level Shift Sysytem -COM (5V) Bluetooth module (3.3V)Q440 Preout Mute SW Non-fader LchQ441 Preout Mute D

18、river (Non-fader) When this transistor is ON, mute is active.Q442 Preout Mute SW Non-fader RchQ450 Preout Mute SW Front LchQ451 Preout Mute SW Front RchQ460 Preout Mute SW Rear LchQ461 Preout Mute Driver (F/R) When this transistor is ON, mute is active.Q462 Preout Mute SW Rear RchQ480,481 AM+B SW Du

19、ring active time, AM source is active.Q520 PAN5V SW When the base goes Lo, PAN5V is ON.Q601 Bluetooth Module Reset When the base goes Hi, Bluetooth module is reset.COMPONENTS DESCRIPTION5KDC-BT6544U/BT6544UY/BT7043U/BT742U SWITCH UNIT (X16-6500-21)Ref. No. Application / Function Operation / Conditio

20、n / CompatibilityIC2 Remote Controller Remote control receiver.Q5 PAN5V When the base goes Hi, PAN5V is supplied for IC2.Q20 Key Scan Timing Adjustment When the base goes Hi, key scan starts.Q21 PAN5V When the base of Q5 goes Hi, PAN5V is supplied for IC2.Q22 Grid Reversing Driver When the base goes

21、 Hi, GRID1 is ON.Q23 Grid Reversing Driver When the base goes Hi, GRID2 is ON.Q24 Grid Reversing Driver When the base goes Hi, GRID3 is ON.Q51 Left Sub-ILLUMI Controller When the base goes Hi, left sub-illumination is ON.Q52 Center 3-key ILLUMI Controller When the base goes Hi, center 3-key illumina

22、tions are ON.Q53 Right Sub-ILLUMI Controller When the base goes Hi, right sub-illuminations are ON. CD PLAYER UNIT (X32-6260-00)Ref. No. Application / Function Operation / Condition / CompatibilityIC1 Mechanism -COMControls DSP and peripheral circuit.USB host controller. (Compliant with Universal Se

23、rial Bus Specifi cation Rev2.0)IC2 Servo DSP with Built-in Audio DACBuilt-in MP3WMAAAC decoder.Built-in 1M-bit-SRAM.IC3 4ch BTL DriverDriver for focusing & tracking coil, driver for sled & spindle motor, and operation for disc loading & ejection.IC4 iPod AuthenticationConnection authentication for i

24、Pod.MFI341S2162: iPhone-compliant.IC5 3.3V5.0V Level Shift Converts communication signal from 3.3V to 5.0V.IC6 5.0V3.3V Level Shift Converts communication signal from 5.0V to 3.3V.IC7 BU1.5V / BU3.3V RegulatorPower supply for digital back-up.Power supply for mechanism -COM.IC8 E2PROMMemory for ROM c

25、orrection.Countermeasure for software malfunction.IC9 A3.3V Regulator Power supply for digital, analog and audio line.Q3 D1.5V OutputThe output voltage in which the power supply that diverges from the BU1.5V line is turned on and off is used as D1.5V. Q5 B.3.3V OutputThe output voltage in which the

26、power supply that diverges from the BU3.3V line is turned on and off is used as D3.3V. Q6 Control signal Inverter Controls Q5.Q7 APC (Auto Power Control) Laser diode driver.Q9 Control signal InverterBecause the detection logic of LOE/LIM_SW is different in the mechanism -COM and the system -COM, the

27、 logic to the mechanism -COM side is reversed. D1 Laser Diode ProtectionPrevents reverse bias which is applied to laser. Laser destruction prevention.D2,3 Countermeasure against Static ElectricityThe potential difference between DGND and AGND is absorbed, and the malfunction by static electricity is

28、 prevented. COMPONENTS DESCRIPTION6KDC-BT6544U/BT6544UY/BT7043U/BT742UMICROCOMPUTERS TERMINAL DESCRIPTION SYSTEM -COM: IC302 on X34- (ELECTRIC UNIT)Pin No. Pin Name I/O ApplicationTruth Value TableProcessing / Operation / Description1 REMO IExternal remote control input and panel remote control inpu

29、t2 LX REQ M O Communication request to slave unit3 B SYS DATA O Serial output to Bolero4 B MECHA DATA I Serial input from Bolero5 B MECHA CLK I Serial clock input from Bolero6 BYTE -7 CNVSS -8 XCIN - Sub clock 32.768kHz9 XCOUT - Sub clock 32.768kHz10 RESET -11 XOUT - Main clock 12.00MHz12 VSS -13 XI

30、N - Main clock 12.00MHz14 VCC1 -15 NMI -16 LX REQ S I Communication request from slave unit17 RDS CLK I RDS decoder clock input (Terminal for European model)18 PANEL DET I Panel connector detached/attached detection H: Panel detached, L: Panel attached19 PON AM I/O AM power supply control AM operate

31、d: H, AM not operated: Hi-Z20 TUN IFC OUT I Front-end IFC-OUT input H: Station found, L: No station21 RDS AFS M I/O Noise detection time constant SW (Terminal for European model)22 RDS QUAL I/O RDS decoder qualifi cation input (Terminal for European model)23 RDS DATA I RDS decoder data input (Termin

32、al for European model)24 V SYNC - Not used Output L fi xed25 NC - Not used Output L fi xed26 PWIC BEEP O Beep output 2kHz/1kHz (Model with Bluetooth)27 TUN SCL I/O Front-end I2C clock input/output MAX 400kHz28 TUN SDA I/O Front-end I2C data input/output29 VFD DATA I/O VFD data input/output30 ROTARY

33、CW I VOL key detection (Clockwise)Detects pulse widthTDF: 15-pulse/360, 2-click/1-pulse31 VFD CLK O VFD clock output 125kHz32 VFD RST O VFD resetH: Reset released, L: ResetMomentary power-down or panel detached or 11 minutes after ACC OFF: L33 BT SYS DATA O Data output to Bluetooth34 BT BT DATA I Da

34、ta input from Bluetooth35,36 NC - Not used Output L fi xed37 PON D5V I/O SW-REG control H: ON, Hi-Z: OFF38 NC - Not used Output L fi xed39 ROMCOR DET I E2PROM writing request H: Writing40 PDN O Simple DSP power down H: ON, L: OFF41 DFZ MUTE I Mute request from simple DSP L: Mute request7KDC-BT6544U/

35、BT6544UY/BT7043U/BT742UPin No. Pin Name I/O ApplicationTruth Value TableProcessing / Operation / Description42 ROTARY CCW I VOL key detection (Counterclockwise)Detects pulse widthTDF: 15-pulse/360, 2-click/1-pulse43 NC - Not used Output L fi xed44 VFD CS O VFD control request H: Possible to transfer

36、 VFD data45 BT RST O Bluetooth module reset L: Normal, H: Bluetooth reset46 VFD INT I VFD-INT input47 NC - Not used Output L fi xed48 PON PANEL I/O Panel 5V power supply controlON (For 11 minutes after ACC OFF): LMomentary power-down or panel detached or 11 minutes after ACC OFF: Hi-Z49 PON O Power

37、supply control H: Power supply ON, L: Power supply OFF50 CD DISC12 SW I 12cm disc detection51 CD LOS SW I CD loading detection52 MECHA STOP O SOC (System On Chip) stop H: Normal, L: SOC stopped52 CD PON O CD mechanism power supply control H: ON, L: OFF53 CD MUTE I CD Mute request L: Mute request, H:

38、 Normal54 S MECHA REQ ICommunication request from mechanism to system -COM55 MECHA RST O SOC (System On Chip) reset H: Normal, L: Reset56 SRAMSTBY O Decoder SRAM standby control H: SRAM standby56 NC - Not used Output L fi xed57CD LOE LIM SWI CD detection (Chucking SW) H: Loading completed, L: No dis

39、c58 S SYS REQ OCommunication request from system -COM to mechanism58 MDSP CE O Mechanism chip enable59 PON ILL O Key illumination power supply control H: Power supply ON, L: Power supply OFF60 VCC2 -61 DRV MUTE O CD motor driver mute output62 VSS -63 TYPE 1 I Destination SW64 TYPE 2 I Destination SW

40、65 NC - Not used Output L fi xed66 CD LOEJ I/O CD motor control q Refer to the truth value table67 CD MOTOR O CD motor control q Refer to the truth value table6870 NC - Not used Output L fi xed71 ILLUMI DET I Dimmer illumination detection L: ON, H: OFF72 ACC DET I ACC power supply detection ACC foun

41、d: L, No ACC: H73 BU DET I Momentary power-down detection BU found: L, Momentary power down: H74 ANT CON O Power antenna control Tuner ON: H75 PCON O External power amplifi er control76 PWIC SVR O Power IC SVR discharge circuit control H: ON, L: OFF77 PWIC MUTE O Power IC mute control78 PWIC STBY O

42、Power IC standby control79 LINE MUTE I Line mute detection TEL mute: Below 1V, NAVI mute: Over 2.5VMICROCOMPUTERS TERMINAL DESCRIPTION8KDC-BT6544U/BT6544UY/BT7043U/BT742UPin No. Pin Name I/O ApplicationTruth Value TableProcessing / Operation / Description80 ST DC DET I Wrong connection detection81 E

43、2P SDA I/O E2PROM I2C data input/output82 E2P SCL I/O E2PROM I2C clock input/output83 DC DET I DC offset detection84 MUTE AFS I/O AFS mute L: Mute ON, Hi-Z: Mute OFF85 MUTE 0 O E-VOL Front mute L: ON, H: OFF86 MUTE 1 O E-VOL Rear mute L: ON, H: OFF87 MUTE 2 O E-VOL Sub Woofer mute L: ON, H: OFF88 MU

44、TE PRE FR O PRE-OUT mute Front/RearLo when mute is Lo (CD played).Momentary power-down: LH fi xed only when Dual Zone is ON.89 MUTE PRE SW OPRE-OUT mute SW (Sub Woofer) * For both PRE-OUT Rear selected and SW selected.L: Mute, H: Mute OFFLo when mute is Lo (CD played).Momentary power-down: L90 RDS N

45、OISE I FM noise detection (Terminal for European model)91 TUN SMETER I S-meter input92 LX MUTE I Mute request from slave unit H: Mute ON, L: Mute OFF 93 LX CON O Start-up request to slave unit H: Slave unit ON , L: Slave unit OFF94 AVSS -95 LX RST O Forced reset to slave unit H: Reset, L: Normal96 V

46、REF -97 AVCC -98 LX DATA S I Data from slave unit99 LX DATA M O Data to slave unit100 LX CLK I/O LX-BUS clockMICROCOMPUTERS TERMINAL DESCRIPTION Truth value tableq CD motor control CD motor CD loading/ejectStop L LLoad H LEject H HBrake H Hi-z9KDC-BT6544U/BT6544UY/BT7043U/BT742UTEST MODE Display des

47、criptionKey Description of display DescriptionA symbol “” in the key column indicates that the key should be pressed and held for 1 second or longer. Key layoutFM+TEL/TI/AUTOPLAY/PAUSE RESETAMAUD uutt How to enter the test modeProcedure NoteReset while SEARCH and SRC keys are being pressed. While “

48、” is displayed, power can be turned ON.All lamps blink when it is detected that the sub-clock resonator is disconnected.When having started up in the test mode, change the LINE MUTE inhibition time from 10 seconds to 1 second.When operating in the test mode, even if a DC offset error occurs, detecti

49、on information is not written in the E2PROM.When operating in the test mode, CD mechanism error log information clear mode, and DC offset error detection information clear mode, do not perform DEMO mode operations.Also, do not display DEMO ON/OFF option items in the MENU in STANDBY source in the above modes.In the test mode the forced disc ejection is prohibited to shorten the period of activation during the test mode transition opera-tion. How to clear the test modeProcedure NoteReset, momentary power down,