Kenwood-KDCBT-838-U-Service-Manual(2) 电路图 维修手册.pdf

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1、This product uses Lead Free solder. This product complies with the RoHS directive for the European market. 2008-5 PRINTED IN JA PAN B53-0666-00 (N) 429SERVICE MANUAL KDC-BT7539U/BT8041U /BT8141UY/BT838U CD RECEIVER KDC-BT7539U Bluetooth KDC-BT8041U Bluetooth KDC-BT838U Bluetooth KDC-BT8041U KDC-BT81

2、41UY (E type) KDC-BT838U (K type) SIZE AA BATTERY (Not supplied) Panel assy (A64-4447-02) MODEL TDF PANEL No. TDF NAME KDC-BT838U Y33-2970-60 TDF-BT89D KDC-BT8041U/BT8141UY Y33-2970-61 TDF-BT8041U KDC-BT7539U Y33-2970-62 TDF-BT7539U CD MECHANISM EXTENSIONCORD (30P) : E39-1014-05 DC cord (K,M type) (

3、E30-6428-05) DC cord (E type) (E30-6671-05) Escutcheon (B07-3245-01) Mounting hardware assy (J21-9716-03) Remote controller assy (A70-2085-05) Lever (D10-7012-04) x2 Carrying case (K,E type) (W01-1710-05) Compact disc (W01-1723-15) Screw set (K,M type) (N99-1757-15) Screw (K,M type) (N84-4016-48) Pa

4、nel assy KDC-BT8041U: (A64-4445-02) KDC-BT8141UY: (A64-4446-02) RC-547 Panel assy (A64-4444-02) Plastic cabinet assy (M type) (A02-2755-13) TDF SPARE-PANEL Microphone (W01-1718-05) KDC-BT7539U (M type) RadioFans.CN 收音机爱 好者资料库 2 KDC-BT7539U/BT8041U /BT8141UY/BT838U BLOCK DIAGRAM AM+B FRONT-END CD MEC

5、HA PON5V A8V A8V AGC E-VOL PRE MUTE IC POWER PRE OUT AUX IN IC451 RDS DECODER BU5V A8V SERVO+B UP BACK RESET IC BU5V u-COM P-CON ANT-CON ACC DET ILLUMI BU5V ILL+B SW14V A8V SW5V P-CON ANT CON ILLUMI ACC BACK UP LINE MUTE SP OUT (FL/FR/RL/RR) FL RESET SW LED BU5V PON5V SERVO A8V ILL+B ILL+B (F/R SW)

6、WIRED REMO LINE MUTE LX BUS CONNECTOR 4P USB5V to USB u-COM USB I/F SW16VSW16V SW16V USB PAN5V BU3.3V IC1 IC700 IC601 IC501 SERVO +B+B FDC FL+B SWDC/DC (FL) (D5V) DC/DC SW PAN5V HI-SIDE SW FL+B USB5V VBUS OC (BT3.3V) DC/DC PAN5VBT3.3V DET B.U/SERGE SW EJE/SRC KEY MATRIX KEY ROM CORR ROTARY ENCODER R

7、EMOTE CONTROL DRIVER LED FL+B u-COM PANEL LEVEL SHIFT AUTHENTICATION iPod u-COM (USB/CD) SUB SYSTEM VBUS OC ROM CORR PON5V ROM CORR DRIVER MUTE (K,M TYPE) BU5V MODULE BLUETOOTH BOOK TEL A8V PON5V +12dB/LPF MIC BT BT3.3V PANEL OPEN/CLOSE DET SW14V SW14V (K,M TYPE) E2PROM FST FM/AM CD SPE ANA MUTE A M

8、UTE 0,1,2 WININOFFSET MUTE A PWIC MUTE for MPX RDS DC ERR MUTE 0,1,2 AUX CH MUTE C MUTE C STBY PREM/SW M I2S I2S DAC MD(BT) RST RST (X16- ) (X34- ) ANT RadioFans.CN 收音机爱 好者资料库 3 KDC-BT7539U/BT8041U /BT8141UY/BT838U BLOCK DIAGRAM DPU1 CD PLAYER UNIT (X32-6130-00) BOARD MOTHER (X34- ) EF A C B TR COIL

9、 FO COIL APC IC4 16.934MHz CLOCK IC3 LOADING & MOTOR DRIVER MOTOR SPINDLE S2 S1 S3 SLED MOTOR DM1 DM2 X1 Q1 RF AMP SERVO MP3 DECODER WMA DECODER 1M bit SRAM PROCESSOR AAC DECODER + + + + + CR FILTER CR FILTER REVERSAL CIRCUIT Q13 BU1.5V REG IC5 IC6 IC11 SW3.3V REG SW1.5V REG LOADING & VREF 12EJE-SW

10、LOS-SW LOE-SW MOTOR LO/EJ A.GND A8V A,B,C,E,F TR OUT FO OUT DM OUT FM OUT A3.3V LD SIGNAL S.GND S7.5V FO OUT TR OUT DM OUT FM OUT DRV MUTE SO SRAMSTB SI BUCK CCE PIO0 SRAMSTB BUCK CCE PIO0 SO SI MRSTMRST C88,R82 C87,R83 R-ch L-chL-ch R-ch ZDETMUTE L/R D.GND D GND BU1.5V SW1.5V SW3.3V AGND BU5V P.ON

11、PD BSIF LRCK BSIF ST REQ BSIF GATE BSIF BCK BSIF DATA BSIF ST REQ BSIF GATE BSIF DATA BSIF BCK BSIF LRCK 8EJE-SW RadioFans.CN 收音机爱 好者资料库 4 KDC-BT7539U/BT8041U /BT8141UY/BT838U SWITCH UNIT (X16-638x-xx) Ref. No.Application / FunctionOperation / Condition / Compatibility IC1Panel -COM IC3Remote Contro

12、l ICRemote control receiver Q1Triangle Red LED SWTriangle LED lights when Q1s base level goes Hi. Q3Blue LED SW (Vol left)Blue LED brightness control (PWM). Q4Blue LED SW (FL Top & ATT Key)Blue LED lights when Q4s base level goes Hi. Q5Blue LED SW (FL under)Blue LED brightness control (PWM). Q6Blue

13、LED SW (Multi function Key)Blue LED brightness control (PWM). Q11VFD Filament Voltage (-)VFD Cut-off bias (5-7.5V) supply. ELECTRIC UNIT (X34-597x-xx) Ref. No.Application / FunctionOperation / Condition / Compatibility IC11Audio8V Ref Power SupplyOutput 1.27V. IC21RegulatorPower supply for IC700. (U

14、SB -com) IC61Switching RegulatorPower supply for D5V. (to USB/PANEL) IC71Switching RegulatorPower supply for FL+B. (to PANEL) IC211Hi-side SWDetection of USB Over Current IC301RDS decoder ICRDS decoder. (only E type) IC331OPAMPFor AGC of the Spectrum Analyzer IC451Eelectrical Volume & Source Selecte

15、rControls the source, volume, and tone. IC501Power IC Amplifi es the front L/R and the rear L/R to 50W maximum. IC601System -comControls FM/AM tuner, the changer, CD mechanism, Panel, volume and tone. IC602Reset IC“L” when detection voltage goes below 3.6V or less. IC603ROM CORRECTIONFor Main progra

16、m correcting emergency (EEP_ROM) IC604Muting logic ICControls logic for muting. IC605Logic ICLevel Shift (3.3V5V) IC607Logic ICLevel Shift (5V3.3V) IC608EEP_ROMMemory of TEL BOOK for “Blue Tooth” IC700Sub -comUSB/CD mechanism control IC750iPod Authentication CoprocessoriPod Authentication IC751ROM C

17、ORRECTIONFor USB program correcting emergency (EEP_ROM) IC964OP AMP+12dB Gain AMP & L.P.F for BT Output IC965Switching RegulatorPower supply for BT3.3V. (to BT Module) Q11Audio8V AVRWhen Q13 & Q12 go ON, A8V AVR outputs 8.0V. Q12Audio8V AVR SWWhen Q13Base goes Hi, Supply current to IC11. Q13Audio8V

18、AVR SWWhen Q13Base goes Hi, Q12 & Q11 are ON. Q21,22B.U.5V AVRWhile BU is applied, BU5V AVR outputs +5V. Q23,24PON5VWhen Q24base goes Hi, PON5V outputs +5V. Q31,32SERVO+B AVRWhen Q33 & Q34 go ON, AVR outputs 8V. Q33,34SERVO+B SWWhen Q34Base goes Hi, Q33 is ON. Q41,42Illumination+B AVRWhen Q43 & Q44

19、go ON, AVR outputs 10V. Q43,44Illumination+B SWWhen Q44Base goes Hi, Q43 is ON. Q51,52SW16VWhen Q9 & Q34 go ON, The voltage appears. (16V) Q71,72FDC+B AVRWhen Q43 goes ON, AVR outputs 9V. (FL Filament) Q81,82FL+B SWWhen Q81Base goes Hi, FL+B outputs 53V. COMPONENTS DESCRIPTION 5 KDC-BT7539U/BT8041U

20、/BT8141UY/BT838U Ref. No.Application / FunctionOperation / Condition / Compatibility Q121B.U Detected SWWhen Q121base gose Hi, B.U voltage is detected. Q122Surge Detect SWWhen Q122base goes Hi, Surge voltage is detected. Q123ACC Detect SWWhen Q123base gose Hi, Acc voltage is detected. Q141,144P-CON

21、SWWhen Q144base goes Hi, AVR outputs 14V. Q142,143P-CON ProtectProtect Q141 by turning on when P-CON output is grounded. Q145,146Power Antenna SWWhen Q146base goes Hi, power antenna switch outputs 14V. Q151Small-lamp Detect SWWhen Q151base goes Hi, Small-lamp is detected. Q321,322AM+B SWWhen Q322bas

22、e gose Hi, AM+B is outputs. Q331AGC CONTROL (for SPE. ANA.)AGC GAIN CONTROL Q401406Pre-out mute SWWhen a base gose Hi, Pre-out is set to mute. Q407,408Pre-out mute driverWhen a base gose Lo, mute driver is turned on. Q602,603LEVEL SHIFTSystem -com (5V) to Sub -com (3.3V) Q680InvertorWhen a base gose

23、 Hi, BT RESET is ON. Q681,682PANEL +5V SWWhen Q682base gose Hi, PANEL +5V is outputs. Q683,684LEVEL SHIFTCD mechanism (3.3V) to Sysytem -com (5V) Q702,703 3.3V_AVR_for_IC700 (fl ash_type)When base of Q702 is “H”, 3.3V_On. Q704Decoder SRAM standby control BufferWhen base of Q704 is “L”, SRAM_STBY. Q7

24、05CD “LOE_LIM” SW_BufferWhen base of Q705 is “H”, Loading_End. Q900L.P.FL.P.F for BT Output (Rch) Q901L.P.FL.P.F for BT Output (Lch) CD PLAYER UNIT (X32-6130-00) Ref. No.Application / FunctionOperation / Condition / Compatibility IC34ch BTL Driver Driver for focusing & tracking coil, driver for sled

25、 & spindle motor, and operation for disc loading & ejection. IC4Servo DSP with built-in Audio DACWith built-in MP3/WMA/AAC decoder and 1M-bit-SRAM. IC5D1.5V REG.Power supply for digital 1.5V. IC6D3.3V REG.Power supply for digital 3.3V. IC11BU1.5V REG.Power supply for back-up 1.5V. Q1APC (Auto Power

26、Control)Drives LD (Laser Diode). Q13InverterInverts ZDET signal. D2Laser Diode ProtectionPrevents reverse bias which is applied to laser. Laser destruction prevention. D3,4Static Electricity CountermeasurePrevents malfunction by static electricity. COMPONENTS DESCRIPTION 6 KDC-BT7539U/BT8041U /BT814

27、1UY/BT838U MICROCOMPUTERS TERMINAL DESCRIPTION SYSTEM -COM: 30626FHP3A7GP (X34-597: IC601) Pin No.Pin NameI/OApplication Truth value table Processing Operation Description 1WIRED_REMOIRemote controller inputPulse width detection 2RDS_QUALIRDS decoder QUAL input terminal 2NCONot used (Models without

28、RDS) Output is fi xed to L 3S_SYS_DATAO Data from system -com to SOC (System -com SOC) 400k 3CD_SIOCD mechanism serial output 4S_SOC_DATAI Data from SOC to system -com (SOC System -com) 400k 4CD_SOICD mechanism serial input 5S_SOC_CLKIHost is SOC, CLK from SOC400k 5CD_CLKO6E Mechanism serial clock o

29、utputf=1MHz 6BYTE 7CNVSS 8XCIN32,768Hz 9XCOUT32,768Hz 10RESET 11XOUT12MHz 12VSS 13XIN12MHz 14VCC1 15NMIINot used 16RDS_CLKIRDS clock input terminalRDS clock input terminal 16NCONot used (Models without RDS) Output is fi xed to L 17PANEL_DETI Panel connector attach/detach detection terminal H: Panel

30、detach, L: Panel attach 18SRC_KEYISource key inputH: OFF, L: ON 19RDS_DATAIRDS decoder DATA input terminal 19NCONot used (Models without RDS) Output is fi xed to L 20CD_DRIVEMUTEOCD motor driver mute output 20NCONot used (Models with USB) Output is fi xed to L 21EJECT_KEYIEject key inputH: OFF, L: O

31、N 22PANRSTOPanel reset terminalH: Normal, L: Reset 23CD_PIO0I Command I/F Communication request terminal from mechanism DSP H: Data request 23NCONot used (Models with USB) Output is fi xed to L 24PON_CDI/OCD mechanism power supply control H: CD mechanism power supply ON Hi-Z: Power supply OFF 24NCON

32、ot used (Models with USB) Output is fi xed to L 25F_SEL1I/O SW_REG frequency setup terminal 1 (Models with BT) H: When receiving MW Hi-Z: When receiving other frequency than MW 25NCONot used (Models without BT) Output is fi xed to L 26PWIC_BEEPOBeep output2kHz 1kHz 27TUN_SCLI/OF/E I2C clock I/O term

33、inalMAX 400k 28TUN_SDAI/OF/E I2C data I/O terminal MAX 400k 29PAN_SYS_DATAO Data from system -com to panel (System -com Panel) UART MAX 500k 7 KDC-BT7539U/BT8041U /BT8141UY/BT838U MICROCOMPUTERS TERMINAL DESCRIPTION Pin No.Pin NameI/OApplication Truth value table Processing Operation Description 30P

34、AN_PAN_DATAI Data from panel to system -com (Panel System -com) UART MAX 500k 31PAN_SYS_REQO Communication request from system -com to panel (System -com Panel) 32PAN_PAN_REQI Communication request from panel to system -com (Panel System -com) 33BT_SYS_DATAO Data from system -com to BT module (Syste

35、m -com BT module) 33NCONot used (Models without BT) Output is fi xed to L 34BT_BT_DATAI Data from BT module to system -com (BT module System -com) 34NCONot used (Models without BT) Output is fi xed to L 35NCONot used Output is fi xed to L 36PON_ILLI/O Panel LED FL bias power supply control H: Power

36、ON Hi-Z: When panel is detach and power is OFF 37NCONot used Output is fi xed to L 38PON_PANELI/O Power supply for panel -com Supply FL_VDD H: Power ON Hi-Z: When panel is detach and power is OFF 39ROMCOR_DETIROM correction writing requestH: Can re-write ROM correction (I2C open) 39EPMI EPM input te

37、rminal for re-writing Rewritable when EPM input terminal is “L” when starting to re-write. 40CD_MOTOROCD motor control terminal 41CD_LOE_LIM_SWICD detection terminal (Chucking SW)H: Loading completed, L: No disc 42CD_LOS_SWICD loading detection terminal L: Ejection completed 43CD_DISC12_SWICD disk d

38、etection terminal (12cm)L: 12cm disc 44PAN_SC_CONO Panel operation control terminal CE when re-writing system -com H: In normal condition, L: Stop the panel 45CD_LOEJI/OCD motor control terminal 46S_SOC_REQI Communication request from SOC to system -com (SOC System -com) 46NCONot used (Models withou

39、t USB) Output is fi xed to L 47SOC_SSTOPOSOC stop terminal H: Normal, L: Stop SOC 47CD_SRAMSTBO Decoder SRAM STANDBY control (Models without USB) L: SRAM standby (6E*) 48SOC_SRSTOSOC reset terminalH: Normal, L: Reset (Bolero) 48CD_RSTOCD mechanism -com RST terminalH: Normal, L: Reset 49S_SYS_REQO Co

40、mmunication request from system -com to SOC (System -com SOC) 49CD_CCEO Command I/F CD mechanism chip enable terminal 50SOC_MUTEIDAC mute request H: Mute request, L: In normal condition 50CD_MUTEIDAC mute request L: Mute request, H: In normal condition 51PON_D5VI/O For USB /FDC 5V power supply contr

41、ol terminal H: ON, Hi-Z: OFF 52PONI/OPower supply control terminalH: ON, Hi-Z: OFF 53OEM_DISP_DATAI/OExternal display DATAExternal display 53NCO Not used (Models without BT/Models without OEM_DISP) Output is fi xed to L 8 KDC-BT7539U/BT8041U /BT8141UY/BT838U MICROCOMPUTERS TERMINAL DESCRIPTION Pin N

42、o.Pin NameI/OApplication Truth value table Processing Operation Description 54OEM_DISP_CLKI/OExternal display CLKExternal display 54NCO Not used (Models without BT/Models without OEM_DISP) Output is fi xed to L 55OEM_DISP_CEI/OExternal display control request External display 55NCO Not used (Models

43、without BT/Models without OEM_DISP) Output is fi xed to L 56P_CONI/OPCON control terminal POWER ON: H, POWER OFF: Hi-Z STBY source: Hi-Z 57ANT_CONOANTCON control terminal TUNER source (including while receiving RDS): H POWER OFF: L, STBY source: L 58NCONot used (Models without EXT_AMP) Output is fi

44、xed to L 59ILLUMI_DETIDimmer illumi detectionL: ON, H: OFF 60VCC2- 61MUTE_0OEVOL FRONT MUTE control L: Mute ON, Independent setup of time constant 10ms, H: In normal condition 62VSS- 63MUTE_1OEVOL REAR MUTE control L: Mute ON, Independent setup of time constant 10ms, H: In normal condition 64MUTE_2O

45、IC-2 SW MUTE control L: Mute ON, Independent setup of time constant 10ms, H: In normal condition, Shall be shared with MUTE_ PRE_SW, IC2 shock noise measure 65LINE_MUTEILine mute detectionTEL MUTE: 1V or less, NAVI MUTE: 2.5V or more 66NCONot used Output is fi xed to L 67BT_RSTOBT module reset termi

46、nalH: Normal, H: BT reset 67NCONot used (Models without BT) Output is fi xed to L 68NCONot used Output is fi xed to L 69MUTE_SAI/O IC-2 MUTE_A control Spectrum analyzer MUTE L: Mute ON, Independent setup of time constant 0.5ms, Hi-Z: In normal condition 70PWIC_DC_DETIDC offset detection terminal 71A

47、CC_DETIACC detection ACC detected: L, ACC not detected: H 72BU_DETIBU detection BU detected: L BU not detected/Reduced voltage/Over-voltage: H 73LX_REQ_SICommunication request from slave unit 73NCONot used (Models not-supporting LX-BUS) Output is fi xed to L 74MUTE_AFSI/O IC-2 MUTE_C control AFS MUT

48、E L: Mute ON, Independent setup of time constant 0.5ms, Hi-Z: In normal condition 74 MUTE_AFS (Not-used) INot used Input is fi xed to Hi-Z 75SDA/EVOL_SDAI/O Data output from system -com to E.VOL (System -com E.VOL data output) Communication speed 200-400k 75PBOOK_SDAI/OData for BT telephone book mem

49、ory 75SDA/E2P_SDAI/OI2C data for ROM correction Communication speed 200-400k 76SCL/EVOL_SCLI/O Output from system -com to EVOLCLK (System -com EVOLCLK output) Communication speed 200-400k 76PBOOK_SCLI/OClock for BT telephone book memory 76SCL/E2P_SCLI/OI2C clock for ROM correction Communication speed 200-400k 77PWIC_MUTEOPower IC MUTE terminal While in STANDBY source, or momentary power down: L While TEL MUTE: L 78PWIC_STBYOPower IC standby terminal POWER ON: H, POWER OFF: L 9 KDC-BT7539U/BT8041U /