Kenwood-KDC-722-Service-Manual电路原理图.pdf

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1、KDC-7024/YKDC-722KDC-8023SERVICE MANUAL 2003-2 PRINTED IN JAPANB53-0036-00 (N)3379CD RECEIVERCD mechanism extension cord : W05-0935-00CD mechanism operation description is not in this service manual.Please, refer to service manual X92-4030-0x (B51-7867-00).Mounting hardware assy(J21-9823-03)DC cord

2、(ISO)(E30-4942-05) : KDC-7024/YRemote controller assy(RC-505)(A70-2040-05) : KDC-722DC cord(E30-6062-05) : KDC-8023(E30-6106-05) : KDC-722Lever(D10-4674-04) x 2Plastic cabinet assy(A02-2731-03)Remote controller assy(RC-420)(A70-2026-05) : KDC-8023Screw set(N99-1723-05) : KDC-722/8023Screw set(N99-17

3、34-05)Antenna adaptor(T90-0552-05) : KDC-7024/YSize AA battery(Not supplied)Escutcheon(B07-3078-01)50 4WDIGITAL AUDIOCOMPACT50 4WDIGITAL AUDIOCOMPACTPanel assy(A64-2981-01): KDC-722, (A64-2983-01): KDC-8023Escutcheon(B07-3078-01)Panel assy(A64-2995-02): KDC-722/8023Panel assy(A64-2987-01): KDC-7024/

4、YPanel assy(A64-3003-02): KDC-7024/YEscutcheon(B07-3078-01)KDC-722 only3HOW TO THE PANEL MECHANISM ASSEMBLY1. Fixed the position of operation side(Fixed the horizontal position when the panel opened)q The mounting hardware (281) of operation side is rota-tion (A) into the stop position with close si

5、de.w As figure (B) line is just above and the gear (230) at-tached to pin.BARotary to the stop position281230This line attached just aboveFig. B(This figure from look at B arrow)C284702SWDEF702SW2842. The slider assembly insert to bottom chassisq The bracket for display panel (284) is leave down, in

6、-sert to the chassis (702). (C)w The slider assembly insert to the chassis (702) afterthat shift (D) direction.e The bracket for display panel (284) is raised (E) direc-tion.r Keep the raising conditions, the slider assembly is shift(F) direction.(Note) Do not bend the knob of chassis detection swit

7、chwhen the slider assembly insert.KDC-7024/Y,722,8023KDC-7024/Y,722,80233BLOCK DIAGRAMRESET SWKEY MATRIX KEY ILLROTARYENCODERLCD DRIVERIC2SW5VQ6PANELIC3REMOCONWITHLCD DRIVERIC1KEY MATRIXLCDBUFFERRDSDECODERBUFFERu-COMMPXE-VOL&ACC DETTEL MUTEB.U DETDRIVERMUTEPOWERICACCTEL MUTEBACK UPSP OUT (FL)RESETIC

8、12IC2IC1IC4IC7Q102,103AM+BPRE MUTEPRE MUTEPRE OUT(FRONT)(REAR/NF)PRE OUTAUX INSP OUT (FR)SP OUT (RL)SP OUT (RR)EXT AMPDIMMER DIMMEREXT.AMP.CONANT-CON ANT CONP-CON P CONWIRED REMO/OPEL DISP I/FIC8Q59,60BU5VSW 5VSW 14VSERVOILL+BSW REGA8VQ1,2Q3Q4,5Q6-8Q9,34BU5VSW5VSW14VA8VSERVOCD5.0VIC14MOTORDRDRMOTORI

9、C13EEPROMEEP5VQ501IC1Q23,24Q30Q29Q25,26Q32Q33Q11-14IC5Q104Q53KEYBU5VBU5V BU5V BU5VS-METERAUDIO OUTSERVO8VBU5VCD4.7VBACK UPFMAMCDQUALCHBU5V8VSW5V8V 8VSW5V8VSW5VBU5VBU5VBU5VSERVO(X16-214)(X16-219)SWITCH UNITDISPLAY UNITTUNERCDCHMECHAPANELTDF UNIT (X16-208)(X25-966)KDC-7024/Y,722,80234a71 SUB-CIRCUIT U

10、NIT (X16-2080-10)Ref. No. Application/Function Operation/Condition/CompatibilityIC1 E2PROM For securitya71 SUB-CIRCUIT UNIT (X16-2140-10)Ref. No. Application/Function Operation/Condition/CompatibilityIC1 LCD driver KEY InputIC2 LCD driverIC3 Remote control sensorQ1 KEY scan start SW ON when the base

11、 goes “L”.Q5, D26 VLCD AVRQ6 Remote control sensor power supply SW ON when the base goes “L”.Q11 Dimmer control LCD back light control. OFF when the base goes “L”, ON when the base goes “H”.a71 SWITCH UNIT (X16-2190-10)Ref. No. Application/Function Operation/Condition/CompatibilityQ1 DSI (Disabled S

12、ystem Indicator) DSI blinks when the base goes “H/L”Q2 KEY illumination SW (GREEN) ON (KEY illumination green) when the base goes “H”Q3 KEY illumination SW (RED) ON (KEY illumination red) when the base goes “H”a71 ELECTRIC UNIT (X25-966x-xx)Ref. No. Application/Function Operation/Condition/Compatibi

13、lityIC1 System -comIC2 E-vol & N.C. & MPXIC3 Regulator IC for A8VIC4 Power ICIC7 Reset ICIC8 Logic IC for mutingIC12 RDS decoder ICIC13, 14 Motor driver IC for panel mechanismIC15 ROM IC For ROM correction.Q1, 2 B.U.5V AVR While BU is applied, BU5V AVR outputs +5V.Q3 SW5V When Q3base goes Lo, SW5V o

14、utputs +5V.Q4, 5 SW14V When Q5base goes Hi, SW14V outputs 14V.Q68 AUDIO 8V AVR When Q6base goes Hi, A8V AVR outputs 8.4V.Q9, 34 SERVO+B AVR When Q34base goes Hi, S+B AVR outputs 7.4V.Q1114 ILL+B AVR When Q11base goes Hi, AVR outputs 10.5V.Q23, 24 P-ANT SW When Q23base goes Hi, P-ANT SW outputs 14V.Q

15、25, 26 P-CON SW When Q26base goes Hi, P-CON SW outputs 14V.Q27, 28 P-CON protection Protect Q27 by turning on when P-CON output is grounded.Q29 Ex Amp control bufferQ30 Small lamp det SW When Q30base goes Hi, Q30 is turned on.Q32 BU det When Q32base gose Hi, Q32 is turned on.Q33 ACC det When Q33base

16、 gose Hi, Q33 is turned on.Q51, 52 Mute driver When a base gose Lo, mute driver is turned on.Q53 Noise bufferQ54 E-vol mute SW When a base gose Hi, mute SW is turned on.COMPONENTS DESCRIPTIONKDC-7024/Y,722,80235Ref. No. Application/Function Operation/Condition/CompatibilityQ55, 56 Pre-out mute SW Wh

17、en a base gose Hi, Pre-out is muted.Q59, 60 Pre-out mute SW When a base gose Hi, Pre-out is muted.Q63 E2P 5V SW When Q63base gose Lo, E2P 5V is out.Q102, 103 AM+B SW When Q102base gose Hi, AM+B is out.Q104 Composite signal buffer for RDSCOMPONENTS DESCRIPTIONa71 SYSTEM MICROCOMPUTER : UPD703030GC015

18、 (X25-966 : IC1)Pin No. Pin Name I/O Module Purpose / Description Truth table Processing Operation1 PLL_DATA I/O Tuner Data output/input with F/E.2 AM+B I/O Power supply AM+B. AM operation : H3 (FM+B) O Power supply FM+B (S01 F/E only).FM operation : H,Last FM : H (With RDS, RBDS model)4 V_ILL PAN_E

19、2P DATA I/O To panel V-ILL D/A converter (V-ILL, LCD), E2PROM data.5 V_ILL PAN_E2P CLK I/O To panel V-ILL D/A converter (V-ILL, LCD), E2PROM clock.6 EVDD -7 EVSS -8 AFS O Tuner Noise detection time constant switching. FM seek, AF search : L, Receiving : H, Auto 0 : L9 BEEP O Audio Beep output.10 REM

20、O I Extra Remote control input (Panel, External display).11 P_MUTE O Audio Power IC MUTE output. Power OFF : L, All OFF : L, TEL mute : L12 (SVR) O Audio Power IC SVR discharge circuit control.Power OFF momentary power dropped: H (5 second) and then LCD CD mechanism data line.13 IC2_SDA I/O Audio IC

21、2 data line.Extra ROM correction data line.CD CD mechanism clock line.14 IC2_CLK I/O Audio IC2 clock line.Extra ROM correction clock line.15 P_STBY O Audio Power IC STBY output. Power IC ON : H, Power IC OFF : L, All OFF : H16 P_CON I/O Extra Power control. Power ON : H, Power OFF : Hi-Z, All OFF :

22、Hi-Z17 DIMMER_CONT O To panel Dimmer control (W-LED only).Dimmer : Pulse control,Frequency : 1kHz, Normally : H18 TEST - Connect to GND.19TYPE2 I Extra Destination select. wNC O Extra NC (MP3 mechanism model). w Output : L20 MUTE O Audio Mute output. ON : OPEN, OFF : L21 PRE_MUTEL O Audio PREOUT (L

23、ch) mute.M MUTE L is L : L (CD), Momentary powerdropped : L, 2 zone, NAVI interrupt : Fixed H22 PRE_MUTER O Audio PREOUT (R ch) mute.M MUTE R is L : L (CD), Momentary powerdropped : L, 2 zone, NAVI interrupt : Fixed HMICROCOMPUTERS TERMINAL DESCRIPTIONKDC-7024/Y,722,80236MICROCOMPUTERS TERMINAL DESC

24、RIPTIONPin No. Pin Name I/O Module Purpose / Description Truth table Processing Operation23 BU_DET I Extra Momentary power dropped detection.Backup : L,No backup, momentary power dropped : H24 ACC_DET I Extra ACC detection. With ACC : L, Without ACC : H25 SW5V I/O Power supply 5V power supply. ON :

25、L, OFF : Hi-Z26EXT_AMP_CONT O Extra External amplifier control. Refer to external amplifier control.NC O NC (Without EXT_AMP_CONT model) Output : L27 DIMMER I Extra Small lamp detection. ON : L, OFF : H28 ANT_CON O Extra Antenna control. wTuner ON : H, Other source With RDS last FM: H, Other source

26、with RDBS TI ON last FM : H29 P_ON I/O Power supplySW 14V, SW 5V control, AD referencePower ON : H, Power OFF : Hi-Zvoltage control output.30 ILL_ON I/O Power supply FL, illumination output. ON : H, OFF : Hi-Z31 RESET -32 XT1 - Sub clock. 32.768kHz33 XT2 - Sub clock. 32.768kHz34 REGC - Connect to 1F

27、 capacitor.35 X2 - Main clock. 20MHz36 X1 - Main clock. 20MHz37 VSS -38 VDD -39 CLKOUT -40 LX_REQ_M O LX Communication request to external slave. Request : L41 LX_MUTE I LX Mute request from external slave. Mute ON : H42 LX_CON O LX External slave select. ON : H, OFF : L43 LX_RST O LX Reset output t

28、o external slave -com.Normally : L, After system reset : H (400msor more) and then L44 NC O NC (Without WMA, MP3 model) Output : L45 TYPE0 I Extra Destination select. w46 TYPE1 I Extra Destination select. w47 IC2_TYPE0 I Extra IC2 destination. w48 IC2_TYPE1 I Extra IC2 destination. w49 NC O NC Outpu

29、t : L50 E2P5V I/O Power supply E2PROM, DA converter power supply control. ON : L, OFF : Hi-Z51 DSI I/O To panel DSI control. ON : L, OFF : Hi-Z52 L_CE O To panel Chip enable output to LCD driver.53 L_INH O To panel Inhibit signal output to LCD driver. Normally : H, Reset, momentary power dropped : L

30、54 VOL A I To panel VOL input.55 BVDD -56 BVSS -57 VOL B I To panel VOL input.58 M_RST O CD Reset output to CD mechanism. Normally : H, Reset : L (Per mechanism control)59 M_STOP O CD Stop request to CD mechanism. Stop : L, CD : H60 CD_SW3 I CD DC down switch detection. Chucking : H61 LO/EJ I/O CD C

31、D mechanism loading/eject switch. Stop, brake : Hi-Z, Loading : L, Eject : H62 MOSW O CD CD mechanism motor driver switch. Loading, eject, brake : H63 FPM MOTOR B O P-mecha FPM mechanism (Slider) control. eKDC-7024/Y,722,80237Pin No. Pin Name I/O Module Purpose / Description Truth table Processing O

32、peration64 FPM MOTOR F O P-mecha FPM mechanism (Slider) control. e65 FPM MOTOR O O P-mecha FPM mechanism (Angle) control. e66 FPM MOTOR C O P-mecha FPM mechanism (Angle) control. e67O_DATA I/O Extra External display data input/output. External displayNC O NC (Without external display model) Output :

33、 L68O_CLK I/O Extra External display clock input/output. External displayNC O NC (Without external display model) Output : L69O_CE I/O Extra External display chip enable input/output. External displayNC O NC (Without external display model) Output : L70 M_MUTER I CD Mute request form CD mechanism. (

34、R ch). ON : L (CD)71 AVDD -72 AVSS -73 AVREF - Connect to P_ON (29 pin).74 M_MUTEL I CD Mute request form CD mechanism. (L ch). ON : L (CD)75 PAN_DET I To panel Panel E2PROM detection. With : L, Without : HPHONE I Extra PHONE detection.TEL mute : 1V or less, NAVI mute : 2.5V or more,76 J type 1V or

35、less, 2.5V or more : NAVI muteNC I NC (Without TEL-MUTE model) Connect to GND.77 FPM SW4 I P-mechaFPM mechanism position detection,e3.75V or more : No mechanism,mechanism detection. 1.25V or more : H, Less than 1.25V : L78 FPM SW1 I P-mecha FPM mechanism position detection. e79 FPM SW2 I P-mecha FPM

36、 mechanism position detection. e80 FPM SW3 I P-mecha FPM mechanism position detection. e81 FPM PHOUT I P-mecha FPM mechanism position detection. e H : 2.2V or more82 S_METER I Tuner S-meter detection. Refer to S03 F/E control.83 NOISE I Tuner FM noise detection. Refer to S03 F/E control.84 IFC_OUT I

37、 Tuner F/E IFC OUT input. With station : 2.5V or more, refer to S03 F/E control.85 NC (POWER_DET) I Extra Power IC DC offset detection. 03 model not used. Connect to GND.86 NC O NC (Except J type) Output : L87R_CLK I Tuner RDS decoder clock input.NC I NC (Without RDS, RBDS model) Connecto to GND.88

38、LX_REQ_S I LX Receive request from external slave. Request : L89 KEY_REQ I To panel Communication request from LCD driver90 CD_SW1 I CD Loading switch detection. Loading start power off : L91 CD_SW2 I CD 12cm disc detection switch. 12cm disc power off : L92R_QUAL I Tuner RDS decoder QUAL input.NC I

39、NC (Without RDS, RBDS model) Connecto to GND.93R_DATA I Tuner RDS decoder data input.NC I NC (Without RDS, RBDS model) Connecto to GND.94 LX_DATA_S I LX Data input from external slave.95 LX_DATA_M O LX Data output to external slave.96 LX_CLK I/O LX Clock input/output with external slave.97 L_DATAL I

40、 To panel Data input from LCD driver.98 L_DATAS O To panel Data output to LCD driver.99 L_CLK O To panel Clock output to LCD driver.100 PLL_CLK I/O Tuner Clock input/output with F/E.MICROCOMPUTERS TERMINAL DESCRIPTIONKDC-7024/Y,722,80238Truth tablew Destination portMODEL Destination DISPLAY TYPE2 TY

41、PE1 TYPE0KDC-X969 K FL 0 0 0KDC-MP922 K FL 0 0 1FX-9000 J FL 0 1 0KDC-PSW9524 E FL 1 0 0KDC-9023R M (E) FL 1 0 1KDC-X869 K FL 0 1 1KDC-8024 E FL - - -KDC-MP822 K LCD - 0 0KDC-M7024 E LCD - 0 1FX-5000 J LCD - 1 0KDC-V7022 K LCD 0 0 0KDC-X769 K LCD 0 0 1KDC-722 K LCD 0 1 0KDC-7024E LCD 0 1 1KDC-7024YK

42、DC-8023 M (K) LCD 1 0 0Note : When FL model using TYPE2, K & J type (with ANT_CON model) : L, E type (without ANT_CON model) : HDestination(IC2)TYPE0 TYPE1Market model L LMarket model CRSC modiification L HOEM model CRSC modification H LOEM model CRSC and de-emphasis modification H He FPM MOTORSlide

43、FPM mechanism operationFPM MOTOR B FPM MOTOR F0 0 Standby1 0 Backward operation0 1 Forward operation1 1 BrakeAngleFPM mechanism operationFPM MOTOR O FPM MOTOR C0 0 Standby1 0 Angle open direction0 1 Angle close direction1 1 BrakeMICROCOMPUTERS TERMINAL DESCRIPTIONKDC-7024/Y,722,80239TEST MODEa71 How

44、 to enter the test modeWhile pressing and holding the Preset 1 and Preset 3 keys,reset the unit.a71 How to exit from the test modeWhile holding the Preset 6 key, reset the unit.(Note) The test mode cannot be terminated by reset theunit, ACC OFF, power OFF and Panel detached, momen-tary power down.a7

45、1 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 of switching func-tion. SYSTEM Q : Flat WOW : All OFF BEEP : When pressing any keys, the buzzer generates abeep at any time. A

46、UX : ON MENU SYSTEM Q : OFF Variable model : Default is white Multifunction : Source dependency (Preset, SCAN, etc.)a71 Special display in Tuner modeWhen any of the following messages is displayed in Tunermode, the F/E may be abnormal. “TNE2P NG” : The EEPROM is set to the default (unstablevalues) b

47、ecause the F/E was shipped without passingthrough the adjustment process, etc. “TNCON NG” : Communication with the F/E is not possible.a71 Forced switching of K3IEach press of the Preset 6 key in Tuner mode should switchK3I from AUTO Forced Wide Forced Middle ForcedNarrow AUTO.The initial status is

48、AUTO and the display shows thesemodes as follows. AUTO : FMA Forced Wide : FMW Forced Middle : FMM Forced Narrow : FMNa71 Test mode specifications of the CD receiver Forced ejection is inhibited in the reset start operation. Whenthe unit is reset while a CD is loaded in it, the CD is notrecognized b

49、y resetting. Each press of the Track Up key jumps to the following tracknumbers:No. 9 No. 15 No. 10 No. 11 No. 12 No. 13 No. 22 No. 14 No. 9 (The cycle restarts from here.) Each press of the Track Down key jumps to the previoustrack number to the track being played. When the number of total trucks of the MP3 disc or theWMA disc is less than 9, 1st truck is played. When the disc media is CD, A short press of the Preset 1key jumps to the track number 28. When the model is equipped the CD mechanism assemblyadapted for MP3 or MP