Kenwood-KDC-5021-V-Service-Manual(1) 电路图 维修手册.pdf

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1、CD RECEIVER KDC-5021/5021V SERVICE MANUAL 2002-2 PRINTED IN KOREA B51-7906-00 (K) 1926 KDC-506 KDC-5021 (E)KDC-5021V (E) KDC-506 (E) KDC-506 KDC-5021KDC-5021V The following reference numbers with accessory parts are the same reference numbers used on EXPLODED VIEW and PARTS LIST. 213 256 276 278 200

2、 DC1 222x2 Refer to the service manual X92-4430-0 x (B51-7889-00) for MECHANISM information. RadioFans.CN 收音机爱 好者资料库 KDC-5021/5021V,506 2 BLOCK DIAGRAM CH CD MECHA F/E FM+B PLL+B AM+B BUFF E-VOL SYSTEM u-COM DECODER RDS RST IC DET FLIP POSI MATRIX KEY G/R SW RST SW REMO ON BACKLIGHT LCD W-ILL DRIVER

3、 LCD REMO GUIDE ILLSW OPEN B.U.5VSW 5V SERVO +B PANEL 2WAY MUTE ACC DET. DIMMER TEL-MUTE ACC DIMMER POWER IC SP-OUT MUTE PRE-OUT (FRONT) PRE-OUT (REAR) MUTE PRE-OUT (NF/REAR) MUTE DRIVER OP-AMP SWITCHED PROTECTION THERMAL NOISE BUFFER 5V B.U. DET. SW 14 A 8V ILLUMI +B EJECT ILL/DSI (SW AND LED) EJEC

4、T KEY X89-252 X89-251 BACK UP ANT-CON ANT-CON P-CON P-CON Q1,2 Q3,4 IC7 IC1 & N.C. MPX IC2 Q6 IC8 Q906S1 ED1 IC2 IC1 Q708 Q706,707 Q901-903 Q501 Q502 Q703Q701,702 Q905 Q503,504 Q505-508 IC5 Q402 Q403,404 IC4 Q205,206 Q201-204 IC3, (NORMAL) DET FLIP LCD (NEGA) MATRIX KEY G/R SW RST SW REMO ON BACKLIG

5、HT LCD W-LED DRIVER LCD REMO ED1 IC2 IC1 X16-163 X16-167 X16-164 Q7 Q6Q2 Q3,4 LCD NEGA KDC-319/4019/5020 KDC-5020R/5021Y/YV KDC-419/X459 KDC-5021/5021V/506 5x7 TYPE14SEG TYPE DATA C CH-CON DATA H REQ H RST CLK REQ C SERVO+B PLL DATA PLL CLK M STOP M RST MUTE L LO/EJ MOSW SW2 SW3 SW1 S-METER IFC OUT

6、SW 5V 3 PANEL DET GUIDE ILL MP IN AFS LEVEL RDDA FM AM A 8V B.U.5V A 8V 3 2 2 3 8 7 SW 5V 8 SDA SCL AUDIO OUT 7 BACK UP 2 REMO RESET B.U.5V MUTE DRIVER PANEL 5V PANEL 5V 5 CD AM+B FM+B S-METER RDCK RQUAL B.U.5V 5 B.U.5V FLIP DET L DATAS L CE L CLK L DATAL L-RES(L-INH) EJECT EJECT ILLUMI/DSI ILL ON S

7、W 5V (E) TYPE(K,M) TYPE CD (NORMAL) 3600mVCHANGER3600mV 3600mV 1800mV 600mV FM AM 1372mV 855mV 3600mV 2 2 2 B.U.5V 8 2 2 2 QUAL S-MUTE REAR L/R FRONT L/R AFS NOISE N/F SW PRE MUTE N/F MUTE P MUTE MUTE BEEP B.U.5V MUTE DRIVER P-ON PANEL 5V SW 5V CH-AUX MODE PRE OUT OUTPUT VOLTAGE PANEL 5V PANEL 5V 5

8、DIMMER PWM CONTROL DIMMER 1.8V PRE 251mV (E) 470mV (K,M) 230mV 1200mV 1200mV RadioFans.CN 收音机爱 好者资料库 KDC-5021/5021V,506 3 COMPONENT DESCRIPTION REF. FUNCTIONOPERATION No. IC1SYSTEM u-COMSystem u-com. IC2E-VOL/NC/MPXE-volume, Noise Chancellor, Multiplexer. IC3MUTE4 inputs, 3 NOR gates. IC4POWER ICPow

9、er IC. IC5SWITCHING OP AMPSwitches operation amplifier. IC7RDS DEMODULATORDemodulates RDS. IC8RESET ICL 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. Q4

10、AM+B SWTurns on when AM signal exists. Q6IFC BUFFERShapes wave form. Q201PRE MUTE SW (FRONT Lch)Mutes when the base level goes H. Q202PRE MUTE SW (FRONT Rch)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 lev

11、el goes H. Q205PRE MUTE SW (NON-FADER Lch)Pre mute SW. Q206PRE MUTE SW (REAR Rch)Pre mute SW. Q401E-VOL MUTE SWMutes E-vol when the base level goes H. Q402NOISE BUFFERBuffers noise. Q403,404 AUDIO MUTE DRIVERTurns on when the base level goes L. Q501 BU & MOMENTARY POWER Turns on when the base level

12、goes H during the back-up effects. DOWN DETECTOR Q502ACC DETECTORTurns on when the base level goes H during ACC effects. Q503,504 P-ANT SWQ503 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 o

13、utput effect stops. Q507P-CON PROTECTORPrevents Q507 turning on during being stand-by after turning power on. Q508P-CON SWQ505 turns on when Q508 base level goes H. Q510SMALL LAMP DETECTORTurns on when the base level goes H during illumination lights. Q701,702 BU 5V AVRTurns on when the back-up effe

14、cts. Q703SW 5VTurns on when the base level goes L. Q704,705 AUDIO 8V & SERVO +B AVR Q704 turns on when Q705 base level goes H. ON/OFF SW Q706,707 AUDIO 8V AVROutput voltage is 8.3V. Q708SERVO +B AVROutput voltage is 7.4V. Q901-903 ILLUMINATION AVRAVR output turns on when Q901 base level goes H. Q905

15、PANEL 5V SWTurns on when the base level goes L. Q906GUIDE ILLUMI SWTurns on when the base level goes L. Q907EJECT KEY & DSI ILLUMI SWTurns on when the base level goes L. ELECTRIC UNIT (X25-922x-xx) RadioFans.CN 收音机爱 好者资料库 KDC-5021/5021V,506 4 COMPONENT DESCRIPTION REF. FUNCTIONOPERATION No. IC1LCD D

16、RIVERDrives LCD. IC2REMOTE CONTROLLERControls the unit. Q1KEY SCAN STARTTurns on when the base level goes L. Q2IC2 POWER SUPPLY SWTurns on when the base level goes L. Q3KEY GREEN ILLUMI SWTurns on when the base level goes H. Q4KEY RED ILLUMI SWTurns on when the base level goes H. SWITCH UNIT (X16-16

17、7x-xx) KDC-5021/5021V,506 5 MICROCOMPUTERS TERMINAL DESCRIPTION PORT PORT NAMEI/OFUNCTIONOPERATING CONDITION No. 1TYPE 0IDestination switch.- 2TYPE 1IDestination switch.- 3FLIP DETIPanel open/close detection.H : Panel opened. L : Panel closed. 4AVSS-GND.- 5PANEL DETIPanel presence detection.H : Pane

18、l does not exists. L : Panel exists. 6E2P DETIEEPROM presence detection.H : ROM exists. 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.Ma

19、x 600KHz communication speed. 12L DATA SOData to LCD driver.Max 1.2MHz communication speed. 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. 18P

20、LL CLKOClock signal to the front-end.- 19GUIDE ILLUMIOGuide illumination control. L: Illumination 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

21、 turns off. 22LO/EJI/OCD-mecha/Loading/Eject switch.L : Loading. H : Eject. 23MOSWOCD-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 : R

22、eset. 28CD DOWNICD down switch detection.H : Chucking. 29ILLUMI ONOIllumination 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

23、 mechanism. - 33VSS 1-GND.- 34IC2 DATAI/OData from or to IC2 or CD mechanism.- 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 : Pur

24、e KENWOOD brand. H : Genuine. 39AM+BOAM power supply.H : AM signal receiving. 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 c

25、ontrol.H : Changer controlled. 45DIMMER CONTODimmer control.H : 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-COM KDC-5021/5021V,506 6 MICROCOMPUTERS TER

26、MINAL DESCRIPTION PORT PORT NAMEI/OFUNCTIONOPERATING CONDITION No. 50N/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 tr

27、affic information turns on. 55P CONOPower control.H : Power turns 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 CIRequ

28、est from the changer.L : Requesting. 63R CLKIRDS clock.L : 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 du

29、ring turning power on. 70X1Imail clock.- 71TESTIProgram power 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 ex

30、ists. 80TYPE 2IDestination switch.- (X25-) IC1 : u-COM KDC-5021/5021V,506 7 TEST MODE 1. How to enter the test mode While holding the Preset 1 and Preset 3 keys, reset the unit. 2. How to exit from the test mode Reset the unit, ACC OFF, power OFF and Panel detached. (Note) The test mode cannot be te

31、rminated by momentary power down. 3. Initial status in the test mode Sources: ALL OFF Display: All segments are lit. Volume: -10dB (displayed as 30) Loudness: OFF CRSC: OFF regardless of the presence of switching function. SYSTEM Q: Flat BEEP: When pressing any keys, the buzzer generates a beep at a

32、ny time. 4. 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: Communication with

33、 the F/E is not possible. 5. 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: FMM For

34、ced Narrow: FMN 6. 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 ? No

35、. 10 ? No. 11 ? No. 12 ? No. 13 ? 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 is less than 9, 1st truck is played. 7. Audio-related specifications A short

36、 press of the Q key initiates the audio adjustment mode. Pressing the ? key on the remote initiates the audio adjustment 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 th

37、e Track Up/Down keys. Balance is adjusted in 3 steps of Left Max / Center / Right Max with the Track Up/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 Menu mode. Pressing

38、 the DNPP/SBF key on the remote initiates the Menu mode. Continuous holding of a remote control key is inhibited. 9. Backup current measurement When the unit is reset while ACC is OFF (i.e. by turning Backup ON), the MUTE terminal goes OFF in 2 seconds in place of 15 second. (The CD mechanism is not

39、 activated at this time.) 10. Special display when the display is all on Pressing the Preset keys while the power is ALL OFF displays the following information. Security-related information 1. Forced Power ON mode (All models) Even when the security (Mask key) is approved, resetting the unit while h

40、olding the ATT and Preset 4 keys makes it possible to turn the power ON for 30 minutes. After 30 minutes have elapsed, it is not possible to return to the previous condition unless the unit is reset again. 2. Method of registration of the security code after EEPROM (Tuner Unit Assy) replacement (Cod

41、e security model) 1. Enter the test mode. (See 1. How to enter the test mode) 2. Press the MENU key to enter the Menu mode. Version display (8 digits, Month/Day/Hour/Minute) (Display)xxxxxxxx : System microcomputer Short press : View power ON time. (The All OFF period is not counted.) Long press/hol

42、d : Clear power ON time at the power ON time displaying. (Display)PON xxxxxMax. 65535 (hours) Short press : Display CD operation time. Long press/hold : Clear CD operation time at the CD operation time displaying. (Display)CDT xxxxxMax. 65535 (hours) Short press : Display CD ejection count. Long pre

43、ss/hold : Clear CD ejection count at the CD ejection count displaying. (Display)EJC xxxxxMax. 65535 (times) Short press : Display Panel open/close count. Long press/hold : Clear Panel open/close count at the Panel open/close count. (Display)PC xxxxxxMax. 655350 (times) PRESET 1 PRESET 3 PRESET 4 PRE

44、SET 5 PRESET 6 KDC-5021/5021V,506 8 TEST MODE 3. When the message Security is displayed, press and hold the Track Up/Down key for 1 second to enter the security registration mode. 4. Enter the code using the FM/AM/Track Up/Track Down keys. FM key: Number up Am key: Number down Track Up key: Cursor r

45、ight shift Track Down key: Cursor left shift 5. Hold down the Track Up key for at least 3 seconds and the message, RE-ENTER appears, so once again enter the code 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

46、2. How to exit from the test mode) (Note) All Clear is not applicable to the security code of this model. ABDFHJCEGI 2 1 3 5 7 4 6 1 55 27 30 3 12 4 29 KI2 KS5 KI4 KS4 KI5 KS2 KI3 KI1 KS3 AUTO DISP 654321RSTAUD SRC AM FM ATT D18 D19 IC2 D5 D6 D7 D4D1 D2 D3 D11 D12 D13 D8 D9 D10 ED1 D20D21 X16-163x-x

47、x/167x-xx (J74-1315-02) SWITCH UNIT R106 C610 C611 R611 L601 R202 R204 R201 R203 R226 R225 R219 R223 R217 R218 R224 1 8 9 1 16 69 R220 R912 R242 R911 R908 R907 R910 R909 R241 R903 R904 R906 R905 R243 R210 R212 R214 R215R213 R208 R206 R227 R237 R221 R216 R239 R222 R228 R632 R638 R639 R636 R637 R630 R

48、623 R621 R617 R619 R628 R629 R627 R656 R704 R703 R650 R644 R640 R641 CP60 CP61 R647 R410 R411 R240 R238 R405 R521 R523 R520 C414 C605 C604 C509 C10 C402 R205 R211R209 R207 X2 X1 C16 R605 R646 C18 B B E EBE BE BE 18 17 2 1 1 2 23 24 EB EB EB EBEBEB BE BE BEEB B BE 17 148 120 21 40 4160 61 80 114 1528

49、 14 85 18 169 1 8 16 9 EB EB BE TEST 1 9 13 10 11 6 12 7 8 5 4 1 32 25 224 VDD RST 32.768kHz 12.0MHz SCL 4.332MHz SDA W5 R513 R506 R509 R515 R710 R701 R511 R505 R514 R707 R510 R708 R516 X3 L1 L6 L401 L5 C212 C204 C214 C216 C202 C506 C412 C403 C410 C413 C208 C415 C210 C703 C11 C1 1 24 C13 C203 C201 C3 C207 C601 C511 C508 C215 C209 C211 C213 C704 C205 C401 C5 C8 C706 C701 C708 C707 C217 C219 C220C218 L501 W30 W29 W28 W17 W11 W15 W14 W12 W10 W9 W8 W20 W16 W13 W2 W23 W18 W19 W21 W22 W26 W27 W31 W24 W1 W3 W4 W6 W25 C502 W7 B E E IC9 IC3 IC2 IC7 Q905