Kenwood-KDC-5020-Service-Manual电路原理图.pdf

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1、CD RECEIVERKDC-319/4019SERVICE MANUAL 2002-2 PRINTED IN KOREAB51-7908-00 (K) 1743KDC-5020The following reference numbers with accessory parts are the same reference numbersused on EXPLODED VIEW and PARTS LIST.213256276200222x2Refer to the service manual “X92-4430-0x“ (B51-7889-00) for MECHANISM info

2、rmation.RC1277KDC-319 (K)KDC-319KDC-4019 (K)KDC-4019KDC-5020 (M)KDC-5020DC1KDC-319/4019,50202BLOCK DIAGRAMCHCD MECHAF/EFM+BPLL+BAM+BBUFFE-VOLSYSTEMu-COMDECODERRDSRST ICDETFLIPPOSIMATRIXKEYG/R SWRST SWREMO ONBACKLIGHTLCDW-ILLDRIVERLCDREMOGUIDEILL SWOPENB.U.5VSW 5VSERVO+BPANEL2WAY MUTEACC DET.DIMMERTE

3、L-MUTEACCDIMMERPOWER ICSP-OUTMUTEPRE-OUT (FRONT)PRE-OUT (REAR)MUTEPRE-OUT (NF/REAR)MUTEDRIVEROP-AMPSWITCHEDPROTECTIONTHERMALNOISEBUFFER5VB.U. DET.SW 14A 8VILLUMI+BEJECT ILL/DSI(SW AND LED)EJECT KEYX89-252X89-251BACK UPANT-CON ANT-CONP-CON P-CONQ1,2Q3,4IC7IC1& N.C. MPXIC2Q6IC8Q906 S1ED1IC2IC1Q708Q706

4、,707Q901-903Q501Q502Q703 Q701,702Q905Q503,504Q505-508IC5Q402 Q403,404IC4Q205,206Q201-204IC3,(NORMAL)DETFLIPLCD (NEGA)MATRIXKEYG/R SWRST SWREMO ONBACKLIGHTLCDW-LEDDRIVERLCDREMOED1IC2IC1X16-163X16-167X16-164Q7Q6 Q2Q3,4LCD NEGAKDC-319/4019/5020KDC-5020R/5021Y/YVKDC-419/X459KDC-5021/5021V/5065x7 TYPE 14

5、SEG TYPEDATA CCH-CONDATA HREQ HRSTCLKREQ CSERVO+BPLL DATAPLL CLKM STOPM RSTMUTE LLO/EJMOSWSW2SW3SW1S-METERIFC OUTSW 5V3PANELDETGUIDE ILLMP INAFSLEVELRDDAFMAMA 8VB.U.5VA 8V322387SW 5V8SDASCLAUDIO OUT7BACK UP2REMORESETB.U.5VMUTEDRIVERPANEL 5VPANEL 5V5CDAM+B FM+BS-METERRDCKRQUALB.U.5V5B.U.5VFLIPDETLDAT

6、ASL CELCLKLDATALL-RES(L-INH) EJECT EJECTILLUMI/DSIILLONSW 5V(E) TYPE(K,M) TYPECD (NORMAL)3600mVCHANGER 3600mV3600mV1800mV600mVFMAM1372mV855mV3600mV222B.U.5V8222QUALS-MUTEREAR L/RFRONT L/RAFSNOISEN/F SWPRE MUTEN/F MUTEP MUTEMUTEBEEPB.U.5VMUTEDRIVERP-ONPANEL 5VSW 5VCH-AUXMODEPRE OUT OUTPUT VOLTAGEPANE

7、L 5VPANEL 5V5DIMMERPWM CONTROLDIMMER1.8V PRE251mV (E)470mV (K,M)230mV1200mV1200mVKDC-319/4019,50203ELECTRIC UNIT (X25-921x-xx)REF.No.FUNCTIONOPERATIONIC1SYSTEM u-COMSystem u-com.IC2E-VOL/NC/MPXE-volume, Noise Chancellor, Multiplexer.IC3MUTE4 inputs, 3 NOR gates.IC4POWER ICPower IC.IC5SWITCHING OPAMP

8、Switches operation amplifier.IC7RDS DEMODULATORDemodulates RDS.IC8RESETIC“L“ when detection voltage goes below 3.0V.IC9EEPROMEEPROM.Q1FM+B SWQ1 turns on when Q2 base level goes “H“.Q2FM+B SWTurns on when FM signal exists.Q3AM+B SWQ3 turns on when Q4 base level goes “H“.Q4AM+B SWTurns on when AM sign

9、al exists.Q6IFC BUFFERShapes wave form.Q201PRE MUTE SW (FRONTLch)Mutes when the base level goes “H“.Q202PRE MUTE SW (FRONTRch)Mutes when the base level goes “H“.Q203PRE MUTE SW (REAR Lch)Mutes when the base level goes “H“.Q204PRE MUTE SW (REAR Rch)Mutes when the base level goes “H“.Q205PRE MUTE SW (

10、NON-FADER Lch)Pre mute SW.Q206PRE MUTE SW (REAR Rch)Pre mute SW.Q401E-VOLMUTE SWMutes E-vol when the base level goes “H“.Q402NOISE BUFFERBuffers noise.Q403,404AUDIO MUTE DRIVERTurns on when the base level goes “L“.Q501BU & MOMENTARYPOWER DOWNDETECTORTurns on when the base level goes “H“ during the b

11、ack-up effects.Q502ACC DETECTORTurns on when the base level goes “H“ during ACC effects.Q503,504P-ANTSWQ503 turns on when Q504 base level goes “H“.Q505P-CON SWQ505 turns on when Q508 base level goes “H“.Q506P-CON PROTECTORProtects Q505 by Q506 turning on when P-CON output effectstops.Q507P-CON PROTE

12、CTORPrevents Q507 turning on during being stand-by after turningpower on.Q508P-CON SWQ505 turns on when Q508 base level goes “H“.Q510SMALLLAMPDETECTORTurns on when the base level goes “H“ during illumination lights.Q701,702BU 5V AVRTurns on when the back-up effects.Q703SW 5VTurns on when the base le

13、vel goes “L“.Q704,705AUDIO 8V & SERVO +B AVR ON/OFF SWQ704 turns on when Q705 base level goes “H“.Q706,707AUDIO 8V AVROutput voltage is 8.3V.Q708SERVO +B AVROutput voltage is 7.4V.Q901-903ILLUMINATION AVRAVR output turns on when Q901 base level goes “H“.Q905PANEL5V SWTurns on when the base level goe

14、s “L“.Q906GUIDE ILLUMI SWTurns on when the base level goes “L“.Q907EJECTKEY& DSI ILLUMI SWTurns on when the base level goes “L“.COMPONENT DESCRIPTIONKDC-319/4019,50204COMPONENT DESCRIPTIONSWITCH UNIT (X16-163x-xx)REF.No.FUNCTIONOPERATIONIC1LCD DRIVERDrives LCD.IC2REMOTE CONTROLLERControls the unit.Q

15、1KEYSCAN STARTTurns on when the base level goes “L“.Q2IC2 POWER SUPPLYSWTurns on when the base level goes “L“.Q3KEYGREEN ILLUMI SWTurns on when the base level goes “H“.Q4KEYRED ILLUMI SWTurns on when the base level goes “H“.KDC-319/4019,50205MICROCOMPUTERS TERMINAL DESCRIPTIONPORTPORT NAMEI/OFUNCTIO

16、NOPERATING CONDITIONNo.1TYPE 0IDestination switch.-2TYPE 1IDestination switch.-3FLIP DETIPanel open/close detection.“H“ : Panel opened. “L“ : Panel closed.4AVSS-GND.-5PANEL DETIPanel presence detection.“H“ : Panel does not exists. “L“ : Panel exists.6E2P DETIEEPROM presence detection.“H“ : ROM exist

17、s. “L“ : ROM does not exist.7AVREF 1IReference voltage.To BU 5V.8CH DATA CIData from the changer.-9CH DATA HOData to the changer.-10CH CLKI/OClock signal from or to the changer.-11L DATA LIData from LCD driver.Max 600KHz communication speed.12L DATA SOData to LCD driver.Max 1.2MHz communication spee

18、d.13L CLKOClock signal to LCD driver.-14L CEOLCD driver enable.“H“ : Driver selected. “L“ : Driver non-selected. 15BEEPOBuzzer.-16PLL DATAI/OData from or to the front-end.-17L RSTOLCD driver reset.“L“ : Reset.18PLL CLKOClock signal to the front-end.-19GUIDE ILLUMIOGuide illumination control.“L“: Ill

19、umination turns on.“H“ : Illumination turns off.20EJECT ILLUMI/DSIOEJECT/DSI illumination control.“L“ : Illumination turns on.“H“ : Illumination turns off.21PANELI/OPanel power supply control.“L“ : Panel exists, ACC turns off.22LO/EJI/OCD-mecha/Loading/Eject switch.“L“ : Loading. “H“ : Eject.23MOSWO

20、CD-mecha/Motor switch.“H“ : Loading, eject, breaking.24M MUTEILch mute request from CD mechanism.“L“ : Mute.25-26M STOPOStop request to CD mechanism.“L“ : Mechanism stop. “H“ : CD playing.27M RSTOCD mechanism reset.“L“ : Reset.28CD DOWNICD down switch detection.“H“ : Chucking.29ILLUMI ONOIlluminatio

21、n power control.“H“ : Illumination turns on.“L“ : Illumination turns off.30IC2 TYPE 1IIC2 destination switch.“L“ : Pure KENWOOD brand. “H“ : Genuine.31P-ONI/OSW 5V control.“L“ : P-ON turns on.32IC2 CLKOClock signal to IC2 or CD mechanism.-33VSS 1-GND.-34IC2 DATAI/OData from or to IC2 or CD mechanism

22、.-35R QUALIRDS QUAL.“L“ : Model without RDS.36R DATAIRDS data.“L“ : Model without RDS.37AFSONoise detection time constant switch.“L“ : FM seeking, AF searching.“H“ : Signal receiving.38IC2 TYPE 0IIC2 destination switch.“L“ : Pure KENWOOD brand. “H“ : Genuine.39AM+BOAM power supply.“H“ : AM signal re

23、ceiving.40FM+BOFM power supply.“H“ : FM signal receiving.41CH MUTEIMute request from the changer.“H“ : Mute effects.42CH RSTOReset signal to the changer.“H“ : Reset.43CH REQ HORequest to the changer.“L“ : Requesting.44CH CONOChanger control.“H“ : Changer controlled.45DIMMER CONTODimmer control.“H“ :

24、 Dimmer turns on.46MUTEOMute.“H“ : Mute effects.47N/F MUTEONon-fader preout mute.“L“ : Mute effects.48PRE MUTEI/OFront/Rear preout mute.“L“ : Mute effects.49REMOTEIRemote control.-(X25-) IC1 : u-COMKDC-319/4019,50206MICROCOMPUTERS TERMINAL DESCRIPTIONPORTPORT NAMEI/OFUNCTIONOPERATING CONDITIONNo.50N

25、/F SWONon-fader switch.“H“ : Rear. “L“ : Front.51P MUTEOPower IC mute.“L“ : Power off, all off.52SVROSVR control.“H“ : Discharging.53P STBYOPower IC stand-by control.“H“ : Power IC turns on.54ANT CONTOAntenna control.“H“ : Tuner or the traffic information turns on.55P CONOPower control.“H“ : Power t

26、urns on.56BU DETIBack-up detection.“L“ : Back-up effects.57ACC DETIACC detection.“L“ : ACC effects.58DIMMERIDimmer detection.“L“ : Dimmer turns off.59-60RESETISystem u-com reset.“L“ : Reset.61EJECTIEject key.“L“ : Key turns on.62CH REQ CIRequest from the changer.“L“ : Requesting.63R CLKIRDS clock.“L

27、“ : Model without RDS.64KEY REQIPanel key interruption.“L“ : Key requesting.6512cm DISCI12cm DISC detection switch.“L“ : 12cm disc exists.66LOAD SWILoading switch detection.“L“ : Loading starts.67VSS-GND.-68VDD-VDD.-69X2-Main clock.Oscillates during turning power on.70X1Imail clock.-71TESTIProgram p

28、ower supply.-72XT2-Sub clock.-73XT1ISub clock.-74VDD-VDD.-75AVDD-Analogue VDD.-76S METERITuner S-meter voltage.-77NOISEINoise detection.-78PHONEIPhone detection.TEL MUTE : Below 1V. NAVI MUTE : Over 2.5V.79IFCIIFC.“H“ : Station signal exists.80TYPE 2IDestination switch.-(X25-) IC1 : u-COMKDC-319/401

29、9,50207TEST MODE1. How to enter the test modeWhile holding the Preset 1 and Preset 3 keys, reset theunit.2. How to exit from the test modeReset the unit, ACC OFF, power OFF and Paneldetached.(Note) The test mode cannot be terminated bymomentary power down.3. Initial status in the test mode Sources:

30、ALL OFF Display: All segments are lit. Volume: -10dB (displayed as “30“) Loudness: OFF CRSC: OFF regardless of the presenceof switching function. SYSTEM Q:Flat BEEP: When pressing any keys, thebuzzer generates a beep at anytime.4. Special display in Tuner modeWhen any of the following messages is di

31、splayed inTuner mode, the F/E may be abnormal. “TNE2P NG“: The EEPROM is set to thedefault (unstable values)because the F/E was shippedwithout passing through theadjustment process, etc. “TNCON NG“: Communication with the F/E isnot possible.5. Forced switching of K3IEach press of the Preset 6 key in

32、 Tuner mode shouldswitch K3I from AUTO Forced Wide K3Forced MiddleK3Forced Narrow K3AUTO.The initial status is AUTO and the display shows thesemodes as follows. AUTO: FMA Forced Wide: FMW Forced Middle: FMM Forced Narrow: FMN6. Test mode specifications of the CD receiver Forced ejection is inhibited

33、 in the reset start operation.When the unit is reset while a CD is loaded in it, theCD is not recognized by resetting. Each press of the Track Up key jumps to the followingtrack numbers:No. 9 K3No. 15 K3No. 10 K3No. 11 K3No. 12 K3No.13 K3No. 14 K3No. 9 (The cycle restarts from here.) Each press of t

34、he Track Down key jumps to theprevious track number to the track being played. When the number of total trucks of the MP3 disc is lessthan 9, 1st truck is played.7. Audio-related specifications A short press of the Q key initiates the audioadjustment mode. Pressing the K2Akey on the remote initiates

35、 the audioadjustment mode. Fader is selected to the initial item. Continuous holding of a remote control key is inhibited. Bass, Middle and Treble are adjusted in 3 steps of Min/ Center / Max with the Track Up/Down keys. Balance is adjusted in 3 steps of Left Max / Center /Right Max with the Track U

36、p/Down keys. Fader is adjusted in 3 steps of Rear Max / Center /Front Max with the Track Up/Down keys.8. Menu-related specifications A short press of the MENU key initiates the Menumode. Pressing the DNPP/SBF key on the remote initiates theMenu mode. Continuous holding of a remote control key is inh

37、ibited.9. Backup current measurementWhen the unit is reset while ACC is OFF (i.e. by turningBackup ON), the MUTE terminal goes OFF in 2 secondsin place of 15 second. (The CD mechanism is notactivated at this time.)10. Special display when the display is all onPressing the Preset keys while the power

38、 is ALL OFFdisplays the following information. Security-related information1. Forced Power ON mode (All models)Even when the security (Mask key) is approved,resetting the unit while holding the ATT and Preset 4keys makes it possible to turn the power ON for 30minutes.After 30 minutes have elapsed, i

39、t is not possible toreturn to the previous condition unless the unit is resetagain.2. Method of registration of the security code afterEEPROM (Tuner Unit Assy) replacement (Codesecurity model)1. Enter the test mode. (See 1. How to enter the testmode)2. Press the MENU key to enter the Menu mode.Versi

40、on display (8 digits, Month/Day/Hour/Minute)(Display)xxxxxxxx : System microcomputerShort press : View power ON time. (The All OFF period is not counted.)Long press/hold : Clear power ON time at the power ON time displaying.(Display)PON xxxxxMax. 65535 (hours)Short press : Display CD operation time.

41、Long press/hold : Clear CD operation time at the CD operationtime displaying.(Display)CDT xxxxxMax. 65535 (hours)Short press : Display CD ejection count.Long press/hold : Clear CD ejection count at the CD ejectioncount displaying.(Display)EJC xxxxxMax. 65535 (times)Short press : Display Panel open/c

42、lose count.Long press/hold : Clear Panel open/close count at the Panelopen/close count.(Display)PC xxxxxxMax. 655350 (times)PRESET 1PRESET 3PRESET 4PRESET 5PRESET 6KDC-319/4019,50208TEST MODE3. When the message “Security“ is displayed, press andhold the Track Up/Down key for 1 second to enter thesec

43、urity registration mode.4. Enter the code using the FM/AM/Track Up/TrackDown keys.FM key: Number upAm key: Number downTrack Up key: Cursor right shiftTrack Down key: Cursor left shift5. Hold down the Track Up key for at least 3 secondsand the message, “RE-ENTER“ appears, so onceagain enter the code

44、according to Step 4 above.6. Press and hold the Track Up key for 3 seconds until“APPROVED“ is displayed.7. Exit from the test mode. (See 2. How to exit from thetest mode)(Note) All Clear is not applicable to the security codeof this model.3. Simplified method of clearing the security code (K Type on

45、ly)1. While the code entry is requested, press and hold theVOL UP key for 3 seconds while holding the DISP keypressed. (This should turn “-“ off.)2. Enter “KCAR“ from the remote. (Same way as the 01model)Press the 5 key on the remote twice, then press theTrack Up key. (This enters “K“.)Press the 2 k

46、ey on the remote 3 times, then pressthe Track Up key. (This enters “C“.)Press the 2 key on the remote once, then press theTrack Up key. (This enters “A“.)Press the 7 key on the remote twice, then press theTrack Up key. (This enters “R“.)3. The security code is cleared and the unit enters theALL OFF

47、mode.4. If you commit a mistake in the code entry, the unitenters the code request mode again.ABDFHJCEGI2 1357 46155273031 2429KI2KS5KI4KS4KI5KS2KI3KI1KS3AUTODISP 6 5 4 3 2 1 RST AUDSRCAMFMATTD18D19IC2D5D6D7D4 D1D2D3D11D12D13D8D9D10ED1D20D22D21X16-1630-10 (J74-1316-02) SWITCH UNITR106C610C61 1R611L6

48、01R202R204R201R203R226R225R219R223R217R218R22418 911669R220R912R242R91 1R908R907R910R909R241R903R904R906R905R243R210R212R214R215R213R208R206R227R237R221R216R239R222R228R632R638R639R636R637R630R623R621R617R619R628R629R627R656R704R703R650R644R640R641CP60CP61R647R410R411R240R238R405R521R523R520C414C605

49、 C604C509C10C402R205R21 1R209R207X2X1C16R605R646C18BBEEBEBEBE181721122324EBEBEBEBE BE BBEBEBEEBBBE1714812021 4041606180114152814 851816918169EBEBBETEST191310 11612785413225224VDDRST32.768kHz12.0MHzSCL4.332MHzSDAW5R513R506R509R515R710R701R511R505R514R707R510R708R516X3L1L6L401L5C212C204C214C216C202C506C412C403C410C413C208C415C210C703C11C1124C13C203C201C3C207C601C51 1C508C215C209C211C213C704C205C401C5C8C706C701C708C707C217C219C220C218L501W30 W29W28W17W1 1W15W14W12W10W9W8W20W16W13W2W23W18W19W21W22W26W27W31W24W1W3W4W6W25C502W7BEEIC9IC3IC2I