Kenwood-KDC-722-Service-Manual(2) 电路图 维修手册.pdf

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1、KDC-7024/Y KDC-722 KDC-8023 SERVICE MANUAL 2003-2 PRINTED IN JAPAN B53-0036-00 (N) 3379 CD RECEIVER CD mechanism extension cord : W05-0935-00CD mechanism operation description is not in this service manual. Please, refer to service manual X92- 4030-0 x (B51-7867-00). Mounting hardware assy (J21-9823

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

3、 KDC-722/8023 Screw set (N99-1734-05) Antenna adaptor (T90-0552-05) : KDC-7024/Y Size AA battery (Not supplied) Escutcheon (B07-3078-01) 504W DIGITAL AUDIO COMPACT 504W DIGITAL AUDIO COMPACT Panel assy (A64-2981-01): KDC-722, (A64-2983-01): KDC-8023 Escutcheon (B07-3078-01) Panel assy (A64-2995-02):

4、 KDC-722/8023 Panel assy (A64-2987-01): KDC-7024/Y Panel assy (A64-3003-02): KDC-7024/Y Escutcheon (B07-3078-01) KDC-722 only RadioFans.CN 收音机爱 好者资料库 3 HOW TO THE PANEL MECHANISM ASSEMBLY 1. Fixed the position of operation side (Fixed the horizontal position when the panel opened) q The mounting har

5、dware (281) of operation side is rota- tion (A) into the stop position with close side. w As figure (B) line is just above and the gear (230) at- tached to pin. B A Rotary to the stop position 281 230 This line attached just above Fig. B (This figure from look at B arrow) C 284 702 SW D E F 702 SW 2

6、84 2. The slider assembly insert to bottom chassis q The bracket for display panel (284) is leave down, in- sert to the chassis (702). (C) w The slider assembly insert to the chassis (702) after that shift (D) direction. e The bracket for display panel (284) is raised (E) direc- tion. r Keep the rai

7、sing conditions, the slider assembly is shift (F) direction. (Note) Do not bend the knob of chassis detection switch when the slider assembly insert. KDC-7024/Y,722,8023 RadioFans.CN 收音机爱 好者资料库 KDC-7024/Y,722,8023 3 BLOCK DIAGRAM RESET SW KEY MATRIX KEY ILL ROTARY ENCODER LCD DRIVER IC2 SW5V Q6 PANE

8、L IC3 REMOCON WITH LCD DRIVER IC1 KEY MATRIX LCD BUFFER RDS DECODER BUFFER u-COM MPX E-VOL & ACC DET TEL MUTE B.U DET DRIVER MUTE POWER IC ACC TEL MUTE BACK UP SP OUT (FL) RESET IC12 IC2 IC1 IC4 IC7 Q102,103 AM+B PRE MUTE PRE MUTE PRE OUT (FRONT) (REAR/NF) PRE OUT AUX IN SP OUT (FR) SP OUT (RL) SP O

9、UT (RR) EXT AMP DIMMERDIMMER EXT.AMP.CON ANT-CONANT CON P-CONP CON WIRED REMO/ OPEL DISP I/F IC8 Q59,60 BU5V SW 5V SW 14V SERVO ILL+B SW REG A8V Q1,2 Q3 Q4,5 Q6-8 Q9,34 BU5V SW5V SW14V A8V SERVO CD5.0V IC14 MOTOR DRDR MOTOR IC13 EEPROM EEP5V Q501 IC1 Q23,24 Q30 Q29 Q25,26 Q32 Q33 Q11-14 IC5 Q104 Q53

10、 KEY BU5V BU5VBU5VBU5V S-METER AUDIO OUT SERVO 8V BU5V CD4.7V BACK UP FM AM CD QUAL CH BU5V 8V SW5V 8V8V SW5V 8V SW5V BU5V BU5V BU5V SERVO (X16-214) (X16-219) SWITCH UNIT DISPLAY UNIT TUNER CD CH MECHA PANEL TDF UNIT (X16-208) (X25-966) RadioFans.CN 收音机爱 好者资料库 KDC-7024/Y,722,8023 4 G SUB-CIRCUIT UNI

11、T (X16-2080-10) Ref. No.Application/FunctionOperation/Condition/Compatibility IC1E2PROMFor security G SUB-CIRCUIT UNIT (X16-2140-10) Ref. No.Application/FunctionOperation/Condition/Compatibility IC1LCD driverKEY Input IC2LCD driver IC3Remote control sensor Q1KEY scan start SWON when the base goes “L

12、”. Q5, D26VLCD AVR Q6Remote control sensor power supply SWON when the base goes “L”. Q11Dimmer controlLCD back light control. OFF when the base goes “L”, ON when the base goes “H”. G SWITCH UNIT (X16-2190-10) Ref. No.Application/FunctionOperation/Condition/Compatibility Q1DSI (Disabled System Indica

13、tor)DSI blinks when the base goes “H/L” Q2KEY illumination SW (GREEN)ON (KEY illumination green) when the base goes “H” Q3KEY illumination SW (RED)ON (KEY illumination red) when the base goes “H” G ELECTRIC UNIT (X25-966x-xx) Ref. No.Application/FunctionOperation/Condition/Compatibility IC1System -c

14、om IC2E-vol & N.C. & MPX IC3Regulator IC for A8V IC4Power IC IC7Reset IC IC8Logic IC for muting IC12RDS decoder IC IC13, 14Motor driver IC for panel mechanism IC15ROM ICFor ROM correction. Q1, 2B.U.5V AVRWhile BU is applied, BU5V AVR outputs +5V. Q3SW5VWhen Q3base goes Lo, SW5V outputs +5V. Q4, 5SW1

15、4VWhen Q5base goes Hi, SW14V outputs 14V. Q68AUDIO 8V AVRWhen Q6base goes Hi, A8V AVR outputs 8.4V. Q9, 34SERVO+B AVRWhen Q34base goes Hi, S+B AVR outputs 7.4V. Q1114ILL+B AVRWhen Q11base goes Hi, AVR outputs 10.5V. Q23, 24P-ANT SWWhen Q23base goes Hi, P-ANT SW outputs 14V. Q25, 26P-CON SWWhen Q26ba

16、se goes Hi, P-CON SW outputs 14V. Q27, 28P-CON protectionProtect Q27 by turning on when P-CON output is grounded. Q29Ex Amp control buffer Q30Small lamp det SWWhen Q30base goes Hi, Q30 is turned on. Q32BU detWhen Q32base gose Hi, Q32 is turned on. Q33ACC detWhen Q33base gose Hi, Q33 is turned on. Q5

17、1, 52Mute driverWhen a base gose Lo, mute driver is turned on. Q53Noise buffer Q54E-vol mute SWWhen a base gose Hi, mute SW is turned on. COMPONENTS DESCRIPTION KDC-7024/Y,722,8023 5 Ref. No.Application/FunctionOperation/Condition/Compatibility Q55, 56Pre-out mute SWWhen a base gose Hi, Pre-out is m

18、uted. Q59, 60Pre-out mute SWWhen a base gose Hi, Pre-out is muted. Q63E2P 5V SWWhen Q63base gose Lo, E2P 5V is out. Q102, 103AM+B SWWhen Q102base gose Hi, AM+B is out. Q104Composite signal buffer for RDS COMPONENTS DESCRIPTION G SYSTEM MICROCOMPUTER : UPD703030GC015 (X25-966 : IC1) Pin No.Pin NameI/

19、OModulePurpose / DescriptionTruth tableProcessing Operation 1PLL_DATAI/OTunerData output/input with F/E. 2AM+BI/OPower supplyAM+B.AM operation : H 3(FM+B)OPower supplyFM+B (S01 F/E only). FM operation : H, Last FM : H (With RDS, RBDS model) 4V_ILL PAN_E2P DATAI/OTo panelV-ILL D/A converter (V-ILL, L

20、CD), E2PROM data. 5V_ILL PAN_E2P CLKI/OTo panelV-ILL D/A converter (V-ILL, LCD), E2PROM clock. 6EVDD- 7EVSS- 8AFSOTunerNoise detection time constant switching.FM seek, AF search : L, Receiving : H, Auto 0 : L 9BEEPOAudioBeep output. 10REMOIExtraRemote control input (Panel, External display). 11P_MUT

21、EOAudioPower IC MUTE output.Power OFF : L, All OFF : L, TEL mute : L 12(SVR)OAudioPower IC SVR discharge circuit control. Power OFF momentary power dropped : H (5 second) and then L CDCD mechanism data line. 13IC2_SDAI/OAudioIC2 data line. ExtraROM correction data line. CDCD mechanism clock line. 14

22、IC2_CLKI/OAudioIC2 clock line. ExtraROM correction clock line. 15P_STBYOAudioPower IC STBY output.Power IC ON : H, Power IC OFF : L, All OFF : H 16P_CONI/OExtraPower control.Power ON : H, Power OFF : Hi-Z, All OFF : Hi-Z 17DIMMER_CONTOTo panelDimmer control (W-LED only). Dimmer : Pulse control, Freq

23、uency : 1kHz, Normally : H 18TEST-Connect to GND. 19 TYPE2IExtraDestination select.w NCOExtraNC (MP3 mechanism model).wOutput : L 20MUTEOAudioMute output.ON : OPEN, OFF : L 21PRE_MUTELOAudioPREOUT (L ch) mute. M MUTE L is L : L (CD), Momentary power dropped : L, 2 zone, NAVI interrupt : Fixed H 22PR

24、E_MUTEROAudioPREOUT (R ch) mute. M MUTE R is L : L (CD), Momentary power dropped : L, 2 zone, NAVI interrupt : Fixed H MICROCOMPUTERS TERMINAL DESCRIPTION KDC-7024/Y,722,8023 6 MICROCOMPUTERS TERMINAL DESCRIPTION Pin No.Pin NameI/OModulePurpose / DescriptionTruth tableProcessing Operation 23BU_DETIE

25、xtraMomentary power dropped detection. Backup : L, No backup, momentary power dropped : H 24ACC_DETIExtraACC detection.With ACC : L, Without ACC : H 25SW5VI/OPower supply5V power supply.ON : L, OFF : Hi-Z 26 EXT_AMP_CONTOExtraExternal amplifier control.Refer to external amplifier control. NCONC (Wit

26、hout EXT_AMP_CONT model)Output : L 27DIMMERIExtraSmall lamp detection.ON : L, OFF : H 28ANT_CONOExtraAntenna control.w Tuner ON : H, Other source With RDS last FM : H, Other source with RDBS TI ON last FM : H 29P_ONI/OPower supply SW 14V, SW 5V control, AD reference Power ON : H, Power OFF : Hi-Z vo

27、ltage control output. 30ILL_ONI/OPower supplyFL, illumination output.ON : H, OFF : Hi-Z 31RESET- 32XT1-Sub clock.32.768kHz 33XT2-Sub clock.32.768kHz 34REGC-Connect to 1F capacitor. 35X2-Main clock.20MHz 36X1-Main clock.20MHz 37VSS- 38VDD- 39CLKOUT- 40LX_REQ_MOLXCommunication request to external slav

28、e.Request : L 41LX_MUTEILXMute request from external slave.Mute ON : H 42LX_CONOLXExternal slave select.ON : H, OFF : L 43LX_RSTOLXReset output to external slave -com. Normally : L, After system reset : H (400ms or more) and then L 44NCONC (Without WMA, MP3 model)Output : L 45TYPE0IExtraDestination

29、select.w 46TYPE1IExtraDestination select.w 47IC2_TYPE0IExtraIC2 destination.w 48IC2_TYPE1IExtraIC2 destination.w 49NCONCOutput : L 50E2P5VI/OPower supplyE2PROM, DA converter power supply control.ON : L, OFF : Hi-Z 51DSII/OTo panelDSI control.ON : L, OFF : Hi-Z 52L_CEOTo panelChip enable output to LC

30、D driver. 53L_INHOTo panelInhibit signal output to LCD driver.Normally : H, Reset, momentary power dropped : L 54VOL AITo panelVOL input. 55BVDD- 56BVSS- 57VOL BITo panelVOL input. 58M_RSTOCDReset output to CD mechanism.Normally : H, Reset : L (Per mechanism control) 59M_STOPOCDStop request to CD me

31、chanism.Stop : L, CD : H 60CD_SW3ICDDC down switch detection.Chucking : H 61LO/EJI/OCDCD mechanism loading/eject switch.Stop, brake : Hi-Z, Loading : L, Eject : H 62MOSWOCDCD mechanism motor driver switch.Loading, eject, brake : H 63FPM MOTOR BOP-mechaFPM mechanism (Slider) control.e KDC-7024/Y,722,

32、8023 7 Pin No.Pin NameI/OModulePurpose / DescriptionTruth tableProcessing Operation 64FPM MOTOR FOP-mechaFPM mechanism (Slider) control.e 65FPM MOTOR OOP-mechaFPM mechanism (Angle) control.e 66FPM MOTOR COP-mechaFPM mechanism (Angle) control.e 67 O_DATAI/OExtraExternal display data input/output.Exte

33、rnal display NCONC (Without external display model)Output : L 68 O_CLKI/OExtraExternal display clock input/output.External display NCONC (Without external display model)Output : L 69 O_CEI/OExtraExternal display chip enable input/output.External display NCONC (Without external display model)Output :

34、 L 70M_MUTERICDMute request form CD mechanism. (R ch).ON : L (CD) 71AVDD- 72AVSS- 73AVREF-Connect to P_ON (29 pin). 74M_MUTELICDMute request form CD mechanism. (L ch).ON : L (CD) 75PAN_DETITo panelPanel E2PROM detection.With : L, Without : H PHONEIExtraPHONE detection. TEL mute : 1V or less, NAVI mu

35、te : 2.5V or more, 76J type 1V or less, 2.5V or more : NAVI mute NCINC (Without TEL-MUTE model)Connect to GND. 77FPM SW4IP-mecha FPM mechanism position detection, e 3.75V or more : No mechanism, mechanism detection.1.25V or more : H, Less than 1.25V : L 78FPM SW1IP-mechaFPM mechanism position detect

36、ion.e 79FPM SW2IP-mechaFPM mechanism position detection.e 80FPM SW3IP-mechaFPM mechanism position detection.e 81FPM PHOUTIP-mechaFPM mechanism position detection.eH : 2.2V or more 82S_METERITunerS-meter detection.Refer to S03 F/E control. 83NOISEITunerFM noise detection.Refer to S03 F/E control. 84I

37、FC_OUTITunerF/E IFC OUT input.With station : 2.5V or more, refer to S03 F/E control. 85NC (POWER_DET)IExtraPower IC DC offset detection.03 model not used. Connect to GND. 86NCONC (Except J type)Output : L 87 R_CLKITunerRDS decoder clock input. NCINC (Without RDS, RBDS model)Connecto to GND. 88LX_REQ

38、_SILXReceive request from external slave.Request : L 89KEY_REQITo panelCommunication request from LCD driver 90CD_SW1ICDLoading switch detection.Loading start power off : L 91CD_SW2ICD12cm disc detection switch.12cm disc power off : L 92 R_QUALITunerRDS decoder QUAL input. NCINC (Without RDS, RBDS m

39、odel)Connecto to GND. 93 R_DATAITunerRDS decoder data input. NCINC (Without RDS, RBDS model)Connecto to GND. 94LX_DATA_SILXData input from external slave. 95LX_DATA_MOLXData output to external slave. 96LX_CLKI/OLXClock input/output with external slave. 97L_DATALITo panelData input from LCD driver. 9

40、8L_DATASOTo panelData output to LCD driver. 99L_CLKOTo panelClock output to LCD driver. 100PLL_CLKI/OTunerClock input/output with F/E. MICROCOMPUTERS TERMINAL DESCRIPTION KDC-7024/Y,722,8023 8 Truth table w Destination port MODELDestinationDISPLAYTYPE2TYPE1TYPE0 KDC-X969KFL000 KDC-MP922KFL001 FX-900

41、0JFL010 KDC-PSW9524EFL100 KDC-9023RM (E)FL101 KDC-X869KFL011 KDC-8024EFL- KDC-MP822KLCD-00 KDC-M7024ELCD-01 FX-5000JLCD-10 KDC-V7022KLCD000 KDC-X769KLCD001 KDC-722KLCD010 KDC-7024 ELCD011 KDC-7024Y KDC-8023M (K)LCD100 Note : When FL model using TYPE2, K & J type (with ANT_CON model) : L, E type (wit

42、hout ANT_CON model) : H Destination(IC2) TYPE0TYPE1 Market modelLL Market model CRSC modiificationLH OEM model CRSC modificationHL OEM model CRSC and de-emphasis modificationHH e FPM MOTOR Slide FPM mechanism operation FPM MOTOR BFPM MOTOR F 00Standby 10Backward operation 01Forward operation 11Brake

43、 Angle FPM mechanism operation FPM MOTOR OFPM MOTOR C 00Standby 10Angle open direction 01Angle close direction 11Brake MICROCOMPUTERS TERMINAL DESCRIPTION KDC-7024/Y,722,8023 9 TEST MODE G How to enter the test mode While pressing and holding the Preset 1 and Preset 3 keys, reset the unit. G How to

44、exit from the test mode While holding the Preset 6 key, reset the unit. (Note) The test mode cannot be terminated by reset the unit, ACC OFF, power OFF and Panel detached, momen- tary power down. G Initial status in the test mode Sources : ALL OFF Display : All segments are lit. Volume : -10 dB (dis

45、played 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 a beep at any time. AUX : ON MENU SYSTEM Q : OFF Variable model : Default is white Multifunction : Source dependency (Prese

46、t, SCAN, etc.) G Special display in Tuner mode When any of the following messages is displayed in Tuner mode, the F/E may be abnormal. “TNE2P NG” : The EEPROM is set to the default (unstable values) because the F/E was shipped without passing through the adjustment process, etc. “TNCON NG” : Communi

47、cation with the F/E is not possible. G Forced switching of K3I Each press of the Preset 6 key in Tuner mode should switch K3I from AUTO Forced Wide Forced Middle Forced Narrow AUTO. The initial status is AUTO and the display shows these modes as follows. AUTO : FMA Forced Wide : FMW Forced Middle :

48、FMM Forced Narrow : FMN G 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 CD is not recognized by resetting. Each press of the Track Up key jumps to the following track numbers: No. 9 No. 15

49、 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 previous track number to the track being played. When the number of total trucks of the MP3 disc or the WMA disc is less than 9, 1st truck is played. When the disc media is CD, A short press of the Preset 1 key jumps to the track number 28. When the model is equipped the CD mechanism assembly adapted for MP3 or MP3/WMA disc, the mechanism name and version number are displayed during the FL model is lower stand and Displa