Kenwood-KDCX-879-Service-Manual电路原理图.pdf

© 2004-02 PRINTED IN JAPANB53-0128-00 (N)764CD RECEIVERKDC-X879SERVICE MANUALSize AA Battery(Not Supplied)Escutcheon(B07-3079-01)Plastic cabinet assy(A02-2731-13)Mounting hardware assy(J21-9823-03)Lever(D10-4674-04) x 2Screw set(N99-1723-05)CD mechanism extension cord (24PIN) : W05-0935-00Screw set(N99-1734-05)DC cord(E30-6294-05)Remote controller assy(A70-2040-05) : RC-505TDF PANEL INFORMATIONMODEL PARTS NO. PANEL NAME KDC-X879 Y33-1790-60 TDF-M9000Panel assy(A64-3227-01)Panel assy(A64-3249-02)KDC-X8792TUNERCDCHMECHAPANELTDF UNITSWITCH UNIT(X16-208)(X16-256)(X34- )(X16-253)DISPLAYUNITBUFFERRDSDECODERBUFFERREMORESET SWKEY MATRIXFLSYSTEMMPXE-VOL&ACC DETTEL MUTEB.U DETSYSTEMDRIVERMUTEPOWERICACCTEL MUTEBACK UPSP OUT (FL)RESETKEY ILLIC14IC2IC1IC4IC8IC9Q303,304AM+BAGCE'S+PRE MUTEPRE MUTEPRE MUTEPRE OUT(FRONT)PRE OUT(REAR)(SUB WOOFER)PRE OUTAUX INOP AMPOP AMPOP AMPSP OUT (FR)SP OUT (RL)SP OUT (RR)EXT AMPDIMMER DIMMEREXT.AMP.CONANT-CON ANT CONP-CON P CONWIRED REMO/OPEL DISP I/FFOCUSSWWOWIC5IC20IC6IC9IC13IC12IC11Q207,208Q205,206Q203,204BU5VSW 5VSW 14V5VSERVOFL+BSW REGA8VPANELQ1,2Q3,601Q502,503Q4,5Q6-8Q9,602BU5VSW5VPANEL5VSW14VDC/DC A8VSERVOCD4.7VIC16MOTORDRDRMOTORIC15DC/DCROTARYENCODERIC7LEVELSHIFTLEVELSHIFTIC8u-COMIC11IC2MASKROM2.5VROMFLASHIC4BPFPANELSW5VIC63.3VSW3.3VQ5FL+BQ4FL3.3VQ2,3EEPROMEEP5VQ501IC1Q23,24Q26Q25IC18Q27Q29IC10Q6,10Q11-14IC19LEDLEDEEPROMMICROPROCESSORS-METERAUDIO OUTSERVO8VBU5VCD4.7VBACK UPFMAMCDQUALCHPANEL5KEYBU5V8VSW5V8V 8VSW5VBPF8V8V9V9V9V8V9VSW5VFL+BFACAGC8V8VBU5VBU5VBU5VSERVOILL+SW5VBLOCK DIAGRAMKDC-X8793BLOCK DIAGRAMS7VA8VBU5VD5VSW3.3VBU3.3VBU2.5VSW3.3VBU3.3VBU5VA8VBU3.3VA5V(X32-5560-00/0-01)CD PLAYER UNIT(X32-5590-00/0-01)IC1u-COMQ8APCQ10C-SWIC4MOTORDRIVERMMM1M2SPINDLEMOTORLOADINGMOTORSLED &S1S2Q3,5,6S3S4(0-01)ONLYQ7Q1,4LEVELSHIFTREG3.3V/2.5VIC153.3V REGIC5LEVELSHIFTIC3MP3/WMADECODERIC2SERVO DSP(DAC,RF AMP)FO COILTR COIL(PICKUP)ACFBEDPU1LDPDCN2CN1LEVELSHIFTDACIC10IC145V REGFILTERAUDIOUNITQ9C-SW15DATACLKMUTERMUTELMSTOPMRST10LOS2018EJEA8VLAGNDDOUTRMOTORLO/EJ5SGNDS7V12EJELOE/LIMX216.00MHz16.898MHzX1OPEND5DGND24BU533882444VREFSLDTRKFCSSPD516PONSGNDDGNDDGNDDGND3AGND3DGNDDMUTESGND22AGNDDGNDDATADGNDDGNDAGNDSDODGNDDGNDDGND SUB CIRCUIT UNIT (X16-2080-10)Ref No. Application / Functions Operation / Condition / CompatibilityIC1 E2PROM E2PROM for security DISPLAY UNIT (X16-2530-11)Ref No. Application / Functions Operation / Condition / CompatibilityIC1 Panel microprocessor Panel control microprocessorIC2 ROM IC Graphic ROMIC4 AVR For 3.3V power supplyIC5 AVR For 2.5V power supplyIC6 Buffer IC Level shift buffer IC (5V3.3V)IC7 Buffer IC Level shift buffer IC (3.3V5V)IC8 Remote control IC For Remote control sensorIC9 Logic IC Control for FL contrastIC10 Analog IC Spectrum analyzer ICCOMPONENTS DESCRIPTIONKDC-X8794Ref No. Application / Functions Operation / Condition / CompatibilityQ1 3.3V Regulator While PAN5V is applied when 3.3V regulator output is +3.3VQ2 2.5V Regulator While PAN5V is applied when 2.5V regulator output is +2.5VQ3,4 FL +B SW FL +B (VDD1) is turned on when Q3 base level goes HQ5 3.3V SW SW3.3V is turned on when Q5 base level goes LQ6,200 FL 3.3V SW FL +3.3V (VDD1) is turned on when Q200 base level goes HQ7,8 Remote control ON SW The power supply of IC8, 10 is turned on when Q10 base level goes HQ9 FL BLK SW VFD is turned on when Q9 base level goes HQ11 Red LED SW Red LED is turned on when Q11 base level goes H SWITCH UNIT (X16-2560-10)Ref No. Application / Functions Operation / Condition / CompatibilityQ1 DSI LED SW DSI LED blinks when Q1 base level goes H/LQ2 KEY Illumination SW (Green) KEY Illumination SW “ON” when the Q2 base level goes HQ3 KEY Illumination SW (Red) KEY Illumination SW “ON” when the Q3 base level goes HQ4 KEY Illumination SW (Blue) KEY Illumination SW “ON” when the Q4 base level goes H CD PLAYER UNIT (X32-5590-00)Ref No. Application / Functions Operation / Condition / CompatibilityIC1 Mechanism control microprocessor -IC2 DSP CD signal processor, RF amp, Servo controlIC3 Decoder IC MP3/WMA decoderIC4 BTL driver Focus, Tracking coil, Feed and Spindle motor driver ICIC5 AVR SW3.3V AVRIC10 Audio DAC -IC13 LPF Audio LPFIC14 AVR A 5.0V AVRIC15 AVR BU3.3V & BU2.5V AVRQ1,4 Level shift FET Level shift (3.3V - 5.0V)Q3,5 Level shift TR Level shift (3.3V - 5.0V)Q6 Level shift TR Level shift (3.3V - 5.0V)Q7 Level shift TR Level shift (3.3V - 5.0V)Q8,11,12 APC Auto power control & A 5V constant current circuitQ9,10 Switching TR Sub beam delay control switch ELECTRIC UNIT (X34-3030-11)Ref No. Application / Functions Operation / Condition / CompatibilityIC1 System control IC System control microprocessorIC2 E-VOL & tuner IC E-VOL. FM/AM tuner & stereo decoderIC3 Power supply IC For A8V AVRIC4 Audio power IC Audio power amplifierCOMPONENTS DESCRIPTIONKDC-X8795Ref No. Application / Functions Operation / Condition / CompatibilityIC5 System IC For System Es controlIC6 Audio control IC For WOW/FOCUS controlIC7 Power supply IC -9V AVR (For 4.5V Pre-out)IC8 Reset IC When BU5V line voltage is less than 3.5V, this IC output line is “L”IC9 Muting logic IC Control for MUTE, P-ANT & RESET mutingIC10 Buffer IC For spectrum analyzerIC1113 OP AMP For 4.5V Pre-outIC14 RDS decoder Decode for RDS signalIC15,16 Motor driver Control for Panel mechanism motorIC18 P-CON IC Power control ICIC19 Power supply IC Switching regulator IC for CD4.7VIC20 Analog SW Control for WOW/FOCUS IC (IC4)Q1,2 BU 5V AVR While BU is applied when BU5V regulator output is +5VQ3,601 SW5V AVR When Q601base level goes H, SW5V regulator output is +5VQ4,5 SW14V AVR When Q5 base level goes H, SW14V regulator output is +14VQ68 Audio 8V AVR When Q6 base level goes H, A8V regulator output is +8.3VQ9,602 Servo +B AVR When Q602 base level goes H, S+B regulator output is +7.5VQ1114 Illumination & DC/DC +B AVR When Q11 base level goes H, AVR output is +9.2VQ15,16 Audio 10.5V AVR When Q16 base level goes H, AVR output is +10.5VQ1719 Pre Amp & -9V AVRQ18,19 work as differential amplifier, Q17 wark as driver and -9.1V is supplied toOP AMP for Pre-outQ2022 Pre Amp & +9V AVRQ20,22 work as differential amplifier, Q21 wark as driver and +9.4V is supplied toOP AMP for Pre-outQ23,24 P-ANT SW When Q23 base level goes H, P-ANT SW output is +14VQ25 Buffer EX amp control bufferQ26 Small lamp det. SW When Q26 base level goes H, Q26 turned ONQ27 BU detector When Q27 base level goes H, Q27 turned ONQ29 ACC detector When Q29 base level goes H, Q29 turned ONQ30,31 Muting driver When base level goes L, muting driver is turned ONQ201 Buffer Noise detect buffer ampQ202 E-VOL muting SW When Q202 base level goes H, muting SW is turned ONQ203208 Pre-out muting SW When base level goes H, Pre-output is mutedQ210 AGC For AGC for spectrum analyzerQ303,304 AM +B SW When Q303 base level goes H, AM +B is out to tuner unitQ305 Buffer Composite signal buffer for RDSQ501 E2P 5V SW When Q501 base level goes L, E2P 5V is out for E2PROMQ502,503 Panel 5V SW When Q503 base level goes H, Panel 5V is outQ603 SW When Q603 base level goes H, Q603 is turned ONCOMPONENTS DESCRIPTIONKDC-X8796 SYSTEM MICROPROCESSOR : UPD703030GC041 (X34-303 : IC1)Pin No. Pin Name I/O Description / Processing Operation Fig.1 PLL DATA I/O Data input/output terminal for Tuner front-end2 AM+B I/O AM+B (AM operation : H)3 (FM+B) O FM+B (FM operation : H, Last FM : H with RDS, RBDS model)4PAN E2P DATA I/O Variable illumination D/A converter, E2PROM DATA terminal5PAN E2P CLK I/O Variable illumination D/A converter, E2PROM CLK terminal6 EVDD - VDD 5V7 EVSS - GND8 AFS O Time constant switching for noise detection (FM seek, AF search, AUTO 0 : L, Receiving : H)9 BEEP O BEEP audio output terminal10 REMO I Remote control input terminal11 P MUTE O Audio power IC muting control terminal (POWER OFF, ALL OFF, TEL MUTE : L)12 SVR O Audio power IC SVR discharge circuit control terminal13 IC2 SDA I/O CD mechanism, IC2, IC5, ROM correction DATA line14 IC2 CLK I/O CD mechanism, IC2, IC5, ROM correction CLOCK line15 P STBY O Audio power IC Stand-by terminal (POWER IC ON, ALL OFF : H, POWER IC OFF : L)16 P CON I/O Power control terminal (POWER ON : H, POWER OFF, ALL OFF : Hi-Z)17 WOW MODE2 O WOW control terminal 118 TEST - NC (GND)19 DIAG I Over voltage/Over current detection terminal (Normal : H, Bad condition : L)20 MUTE O MUTE output terminal (ON : OPEN, OFF : L)21 PRE MUTER O PREOUT (Rch) muting control terminal22 PRE MUTEL O PREOUT (Lch) muting control terminal23 BU DET I Momentary power dropped detection terminal (No Backup, Momentary power dropped : H, Backup : L)24 ACC DET I ACC detection terminal (With ACC : L, Without ACC : H)25 FOCUS I/O WOW/FOCUS control terminal (FOCUS HI : H, FOCUS LOW : L)26 EXT AMP CONT O External amplifier control terminal27 DIMMER I Small lamp detection terminal (ON : L, OFF : H)28 ANT CONT(TYPE2) I/O Antenna control/Destination select terminal (TUNER ON : H)29 P ON I/O SW14V, SW5V control terminal (POWER ON : H, POWER OFF : Hi-Z)30 ILL ON I/O FL, illumination control terminal (ON : H, OFF : Hi-Z)31 RESET I Reset input terminal32,33 XT1/XT2 - Sub clock (32.768KHz)34 REGC - Connect to 1µF capacitor35,36 X2/X1 - Main clock (20MHz)37 VSS - GND38 VDD - AVR 5V39 CLKOUT - NC40 LX REQ M O Communication request to external slave unit (Request : L)41 LX MUTE I Mute request from external slave unit (MUTE : H)MICROCOMPUTERS TERMINAL DESCRIPTIONKDC-X8797Pin No. Pin Name I/O Description / Processing Operation Fig.42 LX CON O External slave unit (ON : H, OFF : L)43 LX RST O Reset output to external slave unit (Normal : L, After system reset : H 400ms or more and then L)44 CD MECHA+B O CD4.7V output terminal (CD : H, Except CD source : L)45,46 TYPE0/TYPE1 I Destination select terminal47,48 IC2 TYPE0/TYPE1 I IC2 destination select terminal49 PAN5V O Panel 5V control terminal (ON : H, Momentary power dropped : Hi-Z)50 E2P5V I/O E2PROM, D/A converter power supply control terminal (ON : L, OFF : Hi-Z)51 DSI I/O DSI control (ON : L, OFF : Hi-Z)52 MC REQ O Communication request to panel microprocessor53 PAN RST O Reset output to panel microprocessor (Normal : H, Reset, Momentary power dropped : L)54 WOW MODE3 O WOW control terminal 155 DVDD - AVR 5V56 DVSS - GND57 SC CON O Panel microprocessor control terminal (POWER OFF, ACC OFF : L)58 M RST O Reset output to CD mechanism (Normal : H, Reset : L)59 M STOP O Stop request to CD mechanism (STOP : L, CD : H)60 CD SW3 I CD DOWN SW detection terminal (CD disc chucking : H)61 LO/EJ I/O CD mechanism loading/ eject selector (STOP, Brake : Hi-Z, LOADING : L, EJECT : H)62 MOSW O CD mechanism motor driver SW (LOADING, EJECT, Brake : H)63 FPM MOTOR B O FPM mechanism (Slider) control terminal 264 FPM MOTOR F O FPM mechanism (Slider) control terminal 265 FPM MOTOR O O FPM mechanism (Angle) control terminal 266 FPM MOTOR C O FPM mechanism (Angle) control terminal 267 O DATA I/O External display DATA terminal 268 O CLK I/O External display CLK terminal69 O CE I/O External display chip enable terminal70 M MUTER I Mute request from CD mechanism (Rch ON : L)71 AVDD - AVR 5V72 AVSS - GND73 AVREF I Connect to P-ON (29PIN)74 M MUTEL I Mute request from CD mechanism (Lch ON : L)75 PAN DET I PANEL, E2PROM detection terminal (With panel : L, Without : H)76 PHONE I PHONE detection terminal (TEL MUTE : 1V or less, NAVI MUTE : 2.5V or more)77 FPM SW4 IFPM mechanism position detect/ CD Mechanism detection terminal2(3.75V or more : No mechanism, 1.25V or more : H, Less than 1.25V : L)78 FPM SW1 I FPM mechanism position detect terminal 279 FPM SW2 I FPM mechanism position detect terminal 280 FPM SW3 I FPM mechanism position detect terminal 281 FPM PHOUT I FPM mechanism position detect terminal (2.2V or more : H) 282 S METER I S meter detection terminalMICROCOMPUTERS TERMINAL DESCRIPTIONKDC-X8798Pin No. Pin Name I/O Description / Processing Operation Fig.83 NOISE I FM noise detection terminal84 IFC OUT I Front end IFC OUT input terminal (Receiving station : 2.5V or more)85 POWER DET I Audio power IC DC offset detection86 CD SW4 I 8cmDISC detection terminal (8cmDISC : L)87 R CLK I RDS decoder clock input terminal88 LX REQ S I Receive request from external slave unit (Request : L)89 SC REQ I Communication request from panel microprocessor90 CD SW1 I LOADING SW detection terminal (LOADING start, POWER OFF : L)91 CD SW2 I 12cmDISC detection terminal (12cmDISC, POWER OFF : L)92 R QUAL I RDS decoder QUAL input terminal93 R DATA I RDS decoder DATA input terminal94 LX DATA S I Data input from external slave unit95 LX DATA M O Data output to external slave unit96 LX CLK I/O Clock input/ output with external slave unit97 PAN RX I Data input from panel microprocessor98 PAN TX O Data output to panel microprocessor99 WOW MODE1 O WOW control terminal100 PLL CLK I/O Clock input/ output to Tuner front-end 1Fig.2 FPM motor controlSLIDE FPM mechanismFPM MOTOR B FPM MOTOR F operationLLStandbyHLBackward operationLHForward operationHHBrakeANGLE FPM mechanismFPM MOTOR O FPM MOTOR C operationLLStandbyHLAngle open directionLHAngle close directionHHBrakeFig.1 WOW mode operationMODE WOW MODE1 WOW MODE2 WOW MODE3 FOCUSBYPASS L L L Dont careTuBass L H L Dont care3D-STEREO L L H Dont careFOCUS LOW H L L L (Hi-Z)FOCUS HI H L L HWOW LOW H H H L (Hi-Z)WOW HI H HHHMICROCOMPUTERS TERMINAL DESCRIPTIONKDC-X8799 PANEL MICROPROCESSOR : 703132GJ011-A (X16-253 : IC1)Pin No. Pin Name I/O Description / Processing Operation17 D14D8 I/O External ROM data input/output terminal8 3.3VDD - AVR 3.3V9 VSS - GND1017 D7D0 I/O External ROM data input/output terminal18 FL GCP1 O FL bright control terminal19 SC REQ O Communication request to system microprocessor (H : Request)20 MC REQ I Request from system microprocessor (H : Request)21 SC CON I Panel microprocessor control (H : While operation)22 FL BLK O Display control SW for FL driver (H : Display ON, L : Display OFF)23 2.5V VDD - AVR 2.5V24 VSS - GND2527 KS5KS3 O Key scan output terminal28,29 TDI/TDO - NC30,31 KS2,1 O Key scan output terminal32 TRST I NC33 ROTARY CCW I Volume input terminal34 ROTARY CW I Volume input terminal35,36 TMS/TCM O NC37 3.3VDD - AVR (3.3V)38 VSS - GND3942 KI1KI4 I Key return input terminal43 FLGCP2 O FL bright control terminal44 NC - NC45 SYS TX I DATA input from system microprocessor46 SYS RX O DATA output to system microprocessor47 FL CLK3 O Clock output to FL driver48 KI5 I Key return input terminal (SRC, OPEN, EJECT interrupt port)49 FL DATA3 O DATA output to FL driver50 SCK1 I Clock input from FL driver51 NC - NC52 FL DATA2 O DATA output to FL driver53 CLK IN1 I Clock input from FL driver54 NC - NC55 FL DATA1 O DATA output to FL driver56 3.3VDD - AVR (3.3V)57,58 X2/X1 - Main clock (5MHz)5961 CVSS/CKSEL/PSEL - GND62 2.5V VDD - AVR 2.5V63 VSS - GNDMICROCOMPUTERS TERMINAL DESCRIPTIONKDC-X87910Pin No. Pin Name I/O Description / Processing Operation64,65 MODE0,1 - GND66 PAN RST I Reset signal request form system microprocessor (L : Reset)67 VREF - Connect to 83PIN (VREF)68,69 NC - NC70,71 AVSS1,0 - GND72 VREF -