Kenwood-KDCC-521-FM-Service-Manual(2) 电路图 维修手册.pdf

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1、 2004-3 PRINTED IN JAPAN B53-0152-00 (N) 2703 CD AUTO CHANGER KDC-C471FM KDC-C521FM SERVICE MANUAL Size AAA battery (Not supplied) (E type only)(E type only) Remote controller assy (A70-2051-05) (RC-535) : KDC-C521FM (A70-2052-05) (RC-525) : KDC-C471FM Velcro (W01-1633-08) Unit holder (J19-7009-08)

2、Screw (N99-1755-08) x2 Antenna adaptor (T90-0512-05) Antenna adaptor (T90-0521-05) COMPACT DISC AUTO CHANGER KDC-C521FM NEW ANTI VIBRATION MECHANISM 10DISC COMPACT DIGITAL AUDIO CD-R/RW 1BIT4D/A CONVER COMPACT DISC AUTO CHANGER KDC-C471FM NEW ANTI VIBRATION MECHANISM 6DISC COMPACT DIGITAL AUDIOCD-R/

3、RW 1BIT 4D/A CONVERTER Holder assy (J19-5146-02) : KDC-C521FM (J19-5149-02) : KDC-C471FM Tray (J99-0614-01) Cord with plug (5m) (E30-4711-05) Bracket (J19-5018-03) : KDC-C521FM (J19-5020-03) : KDC-C471FM Screw set (N99-1645-15) Control unit (Display unit) RF Modulator Except KDC-C471FM (K type) KDC-

4、C521FM KDC-C471FM Bracket (J19-5019-03) : KDC-C521FM (J19-5021-03) : KDC-C471FM When transporting these models, always attach CAUTION CARD and STEPPED SCREW (for transportation). RadioFans.CN 收音机爱 好者资料库 KDC-C471FM/C521FM 2 BLOCK DIAGRAM SW5V LIM SW L.P.S. EJ SW ARM SW 12.5MHz X2 SPINDLE/LO-EJ SLED L

5、OE SW TR COIL FO COIL BTL EEPROM &TEXT DECODER APC SA5V Q1 S8V SYSTEM u-COM IC7 IC1 RF AMP&SARVO DSP 16.93MHz X1 P-ON Q10 Q15,16 Q20 BU. DET IC8 7 13 4 5 8 2 IC5 MG SW 8V AVR S8V S-RAM 24 C 2 BU14V CH RST AUDIO OUT 5 5VREG IC4 DA5V S8V 3 HOT IC9 RESET 7V/9V 5V Q21,22 M5V1 M5V2 SW5V S3 S2 S1 SW5V M M

6、 &DC MOTOR DRIVER ELEVATOR M AVR SA5V Q9 &D/A CONVERTER &SCF MUTE 0bit Q6,7 MUTE Q4,5,8 SD5V FE A D B PD M5V2 AVR CH-MUTE CH-CON 5L I/F IC11 COMM SW S4 to HEAD UNIT ASSY(X13) (X32) (X13) (X92) PICKUP RadioFans.CN 收音机爱 好者资料库 KDC-C471FM/C521FM 3 BLOCK DIAGRAM (FM MODULATOR) RadioFans.CN 收音机爱 好者资料库 KDC

7、-C471FM/C521FM 4 CD PLAYER UNIT (X32-5470-01) Ref. No.Application / FunctionOperation / Condition / Compatibility RF amplifier built in digital servo and data processor IC. Focusing, tracking, sled and spindle servo processing. Detection of dropout, anti-shock, track crossing and off-track IC1Servo

8、IC conditions. Automatic adjustment (focusing, tracking, gain, offset and balance) operations. Digital signal processing (DSP, PLL, sub-codes, CD-TEXT decode, CIRC error correction, audio data interpolaration) operations. IC4+5V AVRAnalogue output circuit power supply for D/A converter. Focusing coi

9、l, tracking coil, spindle motor and sled motor driver. VO1VO4 and VOL outputs ON/OFF function. While MUTE1 goes “Hi”, VO1 outputs are turned on. While MUTE2 goes “Hi”, VO2VO4 and VOL outputs are turned on. VIN1 amplifier function (input selection and VREF selection) IC5Motor driver1. Input selection

10、. While VIN SW terminal goes “Lo”, IC pin 15, 16 and 17 inputs are selected. While VIN SW terminal goes “Hi”, IC pin 15, 18 and 19 inputs are selected. 2. VREF selection. While VIN SW terminal goes “Lo”, internal VREF (2.5V typical) is selected. While VIN SW terminal goes “Hi”, external VREF (IC pin

11、 30 input) is selected. IC7Mechanism -COMMechanism and servo control. IC8EEPROMLPS data back-up memory. IC9Reset ICWhen BU 5V voltage is less than 3.0V, IC outputs “Lo”. Q1APCLaser diode auto power control. Q40 bit mute (L CH.)When 0 bit mute is activated, an emitter goes “Hi”, and Q4 outputs “Hi”.

12、Q50 bit mute (R CH.)When 0 bit mute is activated, an emitter goes “Hi”, and Q5 outputs “Hi”. Q6Mute SW (L CH.) When 0 bit mute or A mute drive is activated, a base goes “Hi”, and L channel audio signal is muted. Q7Mute SW (R CH.) When 0 bit mute or A mute drive is activated, a base goes “Hi”, and R

13、channel audio signal is muted. Q8A mute drive When audio mute of IC7 is activated, a base goes “Lo”, and audio mute drive signal is outputted. Q9Servo 5V AVRQ9 is combined with IC5s pin 26 and 27, and works as a driver of AVR. Q10P-ON 5V SWWhile base goes “Lo”, P-ON 5V is supplied to the microproces

14、sor peripheral circuits. Q11Reset SWWhen System Reset has activated, a base goes “Hi”, and Q11 is turned on. Q13CH CON SWWhile CH CON or CH-CON2 mode is selected, a base goes “Hi”, and Q13 is turned on. Q14CH MUTE SWWhen MUTE REQUEST to H/U is outputted, a base goes “Lo”, and Q14 is turned on. Q16SR

15、V 8V AVRQ16 is combined with Q15 (X92-), and works as a pre-driver of AVR. Q17,18SRV 8V AVR SWWhen Q18s base goes “Hi”, Q17 is turned on, and SVR 8V AVR is working. Q197/9V SW When a base goes “Hi”, Q19 is turned on, and SVR 8V AVR is outputting +7V. When a base goes “Lo”, Q19 is turned off, and SVR

16、 8V AVR is outputting +8.5V. Q20BU DETECTION SW While BACKUP is applied, a base goes “Hi”, and Q20 is turned on. When momentary power down has detected, a base goes “Lo”, and Q20 is turned off. COMPONENTS DESCRIPTION KDC-C471FM/C521FM 5 Ref. No.Application / FunctionOperation / Condition / Compatibi

17、lity Q21,22BU 5V AVR While BACKUP is applied, AVR outputs +5V. Q21 and Q22 are inverted Darlington connection. Q30Eccentric disc SW When an eccentric disc is detected, Q30 is turned on, and a preceding beam is made to be delayed. Q31VIN SW While spindle servo or disc loading/eject mode is selected,

18、a base goes “Hi”, and Q31 is turned on. CONTROL UNIT Ref. No.Application / FunctionOperation / Condition / Compatibility IC701LCD Driver with Key-matrix IC702Remote Control Light Sensor Q701LED ON/OFF SW Q702Key-matrix Permission SW Q703Remote Control ON/OFF SW FM MODULATOR UNIT Ref. No.Application

19、/ FunctionOperation / Condition / Compatibility IC101,102GND Isolation AMP IC103Low Pass Filter IC301FM Stereo Modulator IC3021/2 Vcc Driver, ALC Detection Amp IC501System com IC6016V AVR Q102L/R Mixer SWD.cont off : L, D.cont on : H Q103,203ALC Control SW Q301Composite Buffer Q303,304Level Control

20、SWLEVEL 1/2 : L, LEVEL 3/4 : H, LEVEL 2/4 : L, LEVEL 1/3 : H Q305Audio MutePower on : L, Power off : H Q351Temperature compensation Q401,402PLL Low Pass Filter Q411RF Amp Q501Changer Reset SW Q502Reset SW Q601,602Display Unit Power SW Q603Backup 5V AVR Q604,605Power SW Q6068V AVR Q607Relay Driver Q6

21、08ACC Detection Q609Hold Detection COMPONENTS DESCRIPTION KDC-C471FM/C521FM 6 MECHANISM MICROCOMPUTER : 784214AGC-165 (X32 : IC7) Pin No.Pin NameI/ODescriptionProcessing Operation 1NOR/RWOCD-DA/CD-RW SwitchingNot used (N.C.) 2TSTBOCD-TEXT parameter strobe 3P-CONOP-CON outputNot used (N.C.) 4FOKIFocu

22、s OK input“Hi” : Focus OK 5XTALENOServo IC oscillation stop control“Hi” : Oscillation stop 6RSTOServo IC reset terminal“Lo” : Reset 7SAOOServo IC command/parameter setting terminal“Hi” : Parameter setting, “Lo” : Address resister setting 8SSTBOServo IC command/parameter setting strobe terminal“Hi”“L

23、o” : Serial data latch 9VDD-Positive power supply connection terminalConnected to D 5V lines 10X2-Main clock resonator connection terminal 2 11X1IMain clock resonator connection terminal 1 12VSS-Ground connection terminalConnected to GND lines 13XT2-Sub clock resonator connection terminal 2Not used

24、(N.C.) 14XT1ISub clock resonator connection terminal 1Not used (connected to GND lines) 15RESETISystem reset input“Lo” : System reset 16FOGUPIVibration detect input“Hi” : Vibration detect 17MGSWIMagazine switch input“Hi” : Magazine in 18EJSWIEject switch input“Hi” : Eject switch ON 19COMMSWI5-line c

25、ommunication old/new switch input“Hi” : New communication, “Lo” : Old communication 20PACKIText data pack synchronous signal input“Hi”“Lo” : The head of the pack data 21CH-CONIChanger control input“Hi” : Standby mode, “Lo” : Operation mode 22BUDETIMomentary power down detection input “Hi” : When mom

26、entary power down detected or BU OFF “Lo” : BU ON 23AVDD-A/D converter positive power supply connection terminalConnected to D 5V lines 24AVREF0IA/D converter reference voltage inputConnected to PON 5V lines 25HOTIRise in temperature detection input 26LPSILPS Mechanical deck position detection input

27、 27LOESWILoading complete switch input“Lo” : Loading complete 28LIMSWILimit switch input“Lo” : Pickup most inner position 29TOFFITracking OFF mode terminalNot used (pull down to GND lines) 30ADJSELIServo automatic adjustment ON/OFF terminalNot used (pull down to GND lines) 31TBANKITracking gain swit

28、ching mode terminalNot used (pull down to GND lines) 32SIM2IDestination input 2Not used (pull down to GND lines) 33AVSS-A/D, D/A converter ground connection terminalConnected to GND lines 34LPSCOOLPS A/D converter reference power control outputNot used (N.C.) 35AMUTEOAudio mute output“Lo” : Audio mu

29、te ON 36AVREF1ID/A converter reference voltage inputConnected to D 5V lines 37SDIIServo IC communication serial data input 38SDOOServo IC communication serial data output 39SCKOServo IC communication serial clock output MICROCOMPUTERS TERMINAL DESCRIPTION KDC-C471FM/C521FM 7 Pin No.Pin NameI/ODescri

30、ptionProcessing Operation 40DATAHIData input from H/U 41DATACOData output from the changer 42HCLKI/OCommunication clock input/output with H/U 43RECQCOCommunication request to H/U“Lo” : Communication requested 44CHMUTEO Audio mute request to H/U“Lo” : Audio mute requested 45TSIIText data input from s

31、ervo IC 46TSOOText data output to servo IC 47TSCKOText data clock to servo IC 4855A0A7OAddress setting terminal for S RAM 5663D0D7I/OData input/output terminal with S RAM 6468A8A12OAddress setting terminal for S RAM 6971A13A15OChip enable setting terminal for S RAMNot used (pull down to GND lines) 7

32、2VSS-Ground connection terminalConnected to GND lines 73A16OChip enable setting terminal for S RAMNot used (pull down to GND lines) 74A17OChip enable setting terminal for S RAM 75RAMOKOPickup check judging terminal for productionNot used (N.C.) 76ELVADJIMechanism deck ascent/descent position termina

33、lNot used (pull up to D 5V lines) 77RDORead-out to S RAM control output 78WROWrite to S RAM control output 79WAITIWaiting time insertion input when accessing S RAMNot used (pull down to GND lines) 80ASTBOChip selection to S RAMNot used (N.C.) 81VDD-Positive power supply connection terminalConnected

34、to D 5V lines 82PUSELIPickup type select terminalPull up to D 5V lines 83REQHICommunication request from H/U“Lo” : Communication requested 84SPLO+OSpindle/Loading control terminal 85SPLO-OSpindle/Loading control terminal 86ELV+OMechanism deck ascent/descent terminal 87ELV-OMechanism deck ascent/desc

35、ent terminal 88SIM1IDestination input 1“Lo” : adapted for CD-TEXT, “Hi” : not adapted for CD-TEXT 89SEARCHOSearch mode outputNot used (N.C.) 90TEST1ITest mode terminal 1 for test modeNot used (pull down to GND lines) 91TEST2ITest mode terminal 2 for test modeNot used (pull down to GND lines) 928/7VO

36、Motor driver IC power voltage control output“Hi” : 7V, “Lo” : 8.5V 93EEPWRIEEPROM write mode terminal for productionNot used (pull down to GND lines) 94TEST/VPPIFlash ROM program mode terminalNot used (connected to GND lines) 95SRVSELIServo active mode terminal (no mechanism movement)Not used (pull

37、down to GND lines) 96SLNSAISled non-sensitive area ON/OFF terminalNot used (pull down to GND lines) 97SDAI/OData input/output with EEPROM 98SCLOClock output to EEPROM 99PONOPON output“Lo” : AVR & LPS POWER ON 100ARMSWIArm switch input“Hi” : Arm switch ON MICROCOMPUTERS TERMINAL DESCRIPTION KDC-C471F

38、M/C521FM 8 SYSTEM MICROCOMPUTER : LC72366-9B63 (FM MODULATOR UNIT : IC501) Pin No.Pin NameI/OTerminal nameDescriptionOperation in HOLD 1XINIX INX_tal- 2TEST2-GNDGround connection terminal- 35PG31ONCNot used (pull down to GND lines.)L 6PG0IGNDConnected to GND lines.- 7PF3ONCNot used (open)L 8PF2IREQC

39、CD-Changer REQC (Active “Low”)- 9PF1OREQHCD-Changer REQH (Active “Low”)H 10PF0OCHCONCD-Changer ONL 11SI2ICH_DATA_CCD-Changer DATA in- 12SO2OCH_DATA_HCD-Changer DATA outL 13SCK2OCH_CLKCD-Changer DATA SCK (Active “Low”)H 14PE0ONCNot used (open)L 15PD3OLCD DATA outLCD Driver DATA outL 16PD2OLCD CLKLCD

40、Driver CLK outL 17PD1OLCD RESETLCD Driver RESET outL 18PD0OLCD CELCD Driver CE outL 1926PC3PB0ONCNot used (open)L 27PA3ILCD DATA inLCD Driver DATA in- 2830PA20INCNot used (pull down to GND lines.)- 31VDD-Vdd5V- 32PQ0ONCNot used (open)L 3344PP3PN0OGAIN121Modulation output switchingL 45PM3OSEP-ATTWhen

41、 it has GAIN5 output, “Hi” outputL 4652PM2PL0ONCNot used (open)L 53PK3ORELAYAntenna relay control output terminalL 54PK2OP-onP_ONL 55PK1OMUTEMute output terminal for the Tuner frequency changeL 56INT0IREMOCONRemote controller signal input 5760PJ30ONCNot used (open)L 6166PI1PH0INCNot used (pull down

42、to GND lines.)- 67HOLDIHOLDACC detection (Operation in HOLD “Low”)L 68SNSIVddVdd- 69LCTRINCNot used (pull down to GND lines.)- 70HCTRINCNot used (pull down to GND lines.)- 71EO3ONCNot used (open)Hi-Z 72SUBPDONCNot used (open)Hi-Z 73VDD-VddVdd- 74AMININCNot used (pull down to GND lines.)- 75FMINIVCO

43、inVCO input- 76VSS-VssVss- 77EO2ONCNot used (open)Hi-Z 78EO1OError outPhase Detector Error outputHi-Z 79TEST1-NCNot used (pull down to GND lines.)- 80XOUTOX-outX-tal MICROCOMPUTERS TERMINAL DESCRIPTION KDC-C471FM/C521FM 9 L.P.S. initial position adjustment procedure 1. Connect the changer to the HEA

44、D UNIT (H/U). 2. While holding the magazine eject button of the changer, press the reset button of the H/U. 3. After about 3 seconds, release the magazine eject button. 4. Press the SRC button of the H/U to enter the CD-CH mode, and the H/Us display section indicates “E-88”. 5. Move the mechanism de

45、ck to around the 1st stage by press- ing the DISC- or DISC+ button. 6. Insert the adjustment tool (W05-0635-00) into the tool hole on the changer mechanism. 7. Then press the DISC+ button to move the mechanism deck until the mechanisms slider hits the adjustment tool. 8. When the motor locks (stops)

46、, press the REPEAT key of the H/U. When the REPEAT key is pressed, the mechanism moves automatically to the 1st stage and the initial position adjust- ment completes. (The data is written in the EEPROM at this time.) Caution : Note on IC8 (EEPROM) Be sure to use the W05-0869-00 when replacing the EE

47、PROM. IC8 stores the digital servo data of the pickup servo. Therefore, if the EEPROM does not store servo data, ER- ROR76 (E-76) will indicate the H/Us display section at the moment CD is played. Instrument : SSG, OSC (5MHz), AC VOLTMETER, PWR SUPPLY, H/UNIT, CD-CH RECEIVER ALIGNMENT No.ITEMINPUT S

48、ETTINGSOUTPUT SETTINGS(MODULATOR) POINTS ALIGN FORFIG. FREQ L/R BalanceCD-CH cignal off Connect a 1 Adj.(Tr No.29 or Pause) Oscilloscope88.3MHzVR301Min Level(a) to Q301 Base. 1. Ref.FM 1kHz 80dBVConnect a Difference between 2 Moduration Stereo, CD-CH Tr No.1AC voltmeter88.3MHzVR302 FM and a CD-CH le

49、vel Adj. 2. D.Cont Off MOD Lv:2to Receiver PreOut level is adjusted to (-0.51.0dB). * After Adj. The glue is applied to VR301, VR302. (Scope Setting Condition for L/R BAL. Adj.) 1. VOLTAGE RANGE : 5mV 2. TIME/DIV : 50s Adjusted to be min level point (Before Adj.)(After Adj.) Fig. (a) W05-0635-00 ADJUSTMENT KDC-C471FM/C521FM 10 ABCDE 1 2 3 4 5 6 7 PC BOARD (COMPONENT SIDE VIEW) C63 R68 C52 R78 R79 C72 R133 C61 R77 C68 R97 R206 C17 R146 C8 R16 C7 C3 R4 C4 R87 R84 R145 C16 C15 R54 R53 R73 R72 R96 C69 R106 R67 R69 R162 R105 CP10 CP11 CP6 CP5 CP12 R70 R139 COMMSW /CE1 TSCK T