Kenwood-KDCC-521-FM-Service-Manual电路原理图.pdf

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1、 2004-3 PRINTED IN JAPANB53-0152-00 (N)2703CD AUTO CHANGERKDC-C471FMKDC-C521FMSERVICE MANUALSize 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-C471FMVelcro(W01-1633-08)Unit holder(J19-7009-08)Screw(N99-1755-0

2、8) x2Antenna adaptor(T90-0512-05)Antenna adaptor(T90-0521-05)COMPACT DISC AUTO CHANGER KDC-C521FMNEW ANTI VIBRATION MECHANISM10DISCCOMPACTDIGITAL AUDIO CD-R/RW1BIT 4D/A CONVERCOMPACT DISC AUTO CHANGER KDC-C471FMNEW ANTI VIBRATION MECHANISM6 DISCCOMPACTDIGITAL AUDIO CD-R/RW1BIT 4D/A CONVERTERHolder a

3、ssy(J19-5146-02) : KDC-C521FM(J19-5149-02) : KDC-C471FMTray(J99-0614-01) Cord with plug (5m)(E30-4711-05) Bracket(J19-5018-03) : KDC-C521FM(J19-5020-03) : KDC-C471FMScrew set(N99-1645-15) Control unit(Display unit) RF ModulatorExcept KDC-C471FM (K type)KDC-C521FMKDC-C471FMBracket(J19-5019-03) : KDC-

4、C521FM(J19-5021-03) : KDC-C471FMWhen transporting these models, always attach CAUTION CARD and STEPPED SCREW (for transportation).KDC-C471FM/C521FM2BLOCK DIAGRAMSW5VLIM SWL.P.S.EJ SWARM SW12.5MHzX2SPINDLE/LO-EJSLEDLOE SWTR COILFO COILBTLEEPROM&TEXT DECODERAPCSA5VQ1S8VSYSTEM u-COMIC7IC1RF AMP&SARVO D

5、SP16.93MHzX1P-ONQ10Q15,16Q20BU. DETIC87134582IC5MG SW8V AVRS8VS-RAM24C2BU14VCH RSTAUDIOOUT55VREGIC4DA5VS8V3HOTIC9RESET7V/9V5VQ21,22M5V1M5V2SW5VS3S2S1SW5VMM&DC MOTORDRIVERELEVATORMAVRSA5VQ9&D/A CONVERTER&SCFMUTE0bitQ6,7MUTEQ4,5,8SD5VFEADBPDM5V2AVRCH-MUTECH-CON5L I/FIC11COMM SWS4toHEADUNITASSY (X13)(X

6、32)(X13)(X92)PICKUPKDC-C471FM/C521FM3BLOCK DIAGRAM(FM MODULATOR)KDC-C471FM/C521FM4 CD PLAYER UNIT (X32-5470-01)Ref. No. Application / Function Operation / Condition / CompatibilityRF amplifier built in digital servo and data processor IC. Focusing, tracking, sled andspindle servo processing. Detecti

7、on of dropout, anti-shock, track crossing and off-trackIC1 Servo ICconditions.Automatic adjustment (focusing, tracking, gain, offset and balance) operations.Digital signal processing (DSP, PLL, sub-codes, CD-TEXT decode, CIRC errorcorrection, audio data interpolaration) operations.IC4 +5V AVR Analog

8、ue output circuit power supply for D/A converter.Focusing coil, 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 select

9、ion and VREF selection)IC5 Motor driver 1. Input selection.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.W

10、hile VIN SW terminal goes “Hi”, external VREF (IC pin 30 input) is selected.IC7 Mechanism -COM Mechanism and servo control.IC8 EEPROM LPS data back-up memory.IC9 Reset IC When BU 5V voltage is less than 3.0V, IC outputs “Lo”.Q1 APC Laser diode auto power control.Q4 0 bit mute (L CH.) When 0 bit mute

11、 is activated, an emitter goes “Hi”, and Q4 outputs “Hi”.Q5 0 bit mute (R CH.) When 0 bit mute is activated, an emitter goes “Hi”, and Q5 outputs “Hi”.Q6 Mute SW (L CH.)When 0 bit mute or A mute drive is activated, a base goes “Hi”, and L channel audiosignal is muted.Q7 Mute SW (R CH.)When 0 bit mut

12、e or A mute drive is activated, a base goes “Hi”, and R channel audiosignal is muted.Q8 A mute driveWhen audio mute of IC7 is activated, a base goes “Lo”, and audio mute drive signal isoutputted.Q9 Servo 5V AVR Q9 is combined with IC5s pin 26 and 27, and works as a driver of AVR.Q10 P-ON 5V SW While

13、 base goes “Lo”, P-ON 5V is supplied to the microprocessor peripheral circuits.Q11 Reset SW When System Reset has activated, a base goes “Hi”, and Q11 is turned on.Q13 CH CON SW While CH CON or CH-CON2 mode is selected, a base goes “Hi”, and Q13 is turned on.Q14 CH MUTE SW When MUTE REQUEST to H/U i

14、s outputted, a base goes “Lo”, and Q14 is turned on.Q16 SRV 8V AVR Q16 is combined with Q15 (X92-), and works as a pre-driver of AVR.Q17,18 SRV 8V AVR SW When Q18s base goes “Hi”, Q17 is turned on, and SVR 8V AVR is working.Q19 7/9V SWWhen a base goes “Hi”, Q19 is turned on, and SVR 8V AVR is output

15、ting +7V.When a base goes “Lo”, Q19 is turned off, and SVR 8V AVR is outputting +8.5V.Q20 BU DETECTION SWWhile 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 DESCRIPTIONKDC-C471FM/C521FM5Ref. No. Ap

16、plication / Function Operation / Condition / CompatibilityQ21,22 BU 5V AVRWhile BACKUP is applied, AVR outputs +5V.Q21 and Q22 are inverted Darlington connection.Q30 Eccentric disc SWWhen an eccentric disc is detected, Q30 is turned on, and a preceding beam is made tobe delayed.Q31 VIN SWWhile spind

17、le servo or disc loading/eject mode is selected, a base goes “Hi”, and Q31 isturned on. CONTROL UNITRef. No. Application / Function Operation / Condition / CompatibilityIC701 LCD Driver with Key-matrixIC702 Remote Control Light SensorQ701 LED ON/OFF SWQ702 Key-matrix Permission SWQ703 Remote Control

18、 ON/OFF SW FM MODULATOR UNITRef. No. Application / Function Operation / Condition / CompatibilityIC101,102 GND Isolation AMPIC103 Low Pass FilterIC301 FM Stereo ModulatorIC302 1/2 Vcc Driver, ALC Detection AmpIC501 System comIC601 6V AVRQ102 L/R Mixer SW D.cont off : L, D.cont on : HQ103,203 ALC Con

19、trol SWQ301 Composite BufferQ303,304 Level Control SW LEVEL 1/2 : L, LEVEL 3/4 : H, LEVEL 2/4 : L, LEVEL 1/3 : HQ305 Audio Mute Power on : L, Power off : HQ351 Temperature compensationQ401,402 PLL Low Pass FilterQ411 RF AmpQ501 Changer Reset SWQ502 Reset SWQ601,602 Display Unit Power SWQ603 Backup 5

20、V AVRQ604,605 Power SWQ606 8V AVRQ607 Relay DriverQ608 ACC DetectionQ609 Hold DetectionCOMPONENTS DESCRIPTIONKDC-C471FM/C521FM6 MECHANISM MICROCOMPUTER : 784214AGC-165 (X32 : IC7)Pin No. Pin Name I/O Description Processing Operation1 NOR/RW O CD-DA/CD-RW Switching Not used (N.C.)2 TSTB O CD-TEXT par

21、ameter strobe3 P-CON O P-CON output Not used (N.C.)4 FOK I Focus OK input “Hi” : Focus OK5XTALEN O Servo IC oscillation stop control “Hi” : Oscillation stop6 RST O Servo IC reset terminal “Lo” : Reset7SAO O Servo IC command/parameter setting terminal “Hi” : Parameter setting, “Lo” : Address resister

22、 setting8 SSTB O Servo IC command/parameter setting strobe terminal “Hi”“Lo” : Serial data latch9 VDD - Positive power supply connection terminal Connected to D 5V lines10 X2 - Main clock resonator connection terminal 211 X1 I Main clock resonator connection terminal 112 VSS - Ground connection term

23、inal Connected to GND lines13 XT2 - Sub clock resonator connection terminal 2 Not used (N.C.)14 XT1 I Sub clock resonator connection terminal 1 Not used (connected to GND lines)15 RESET I System reset input “Lo” : System reset16 FOGUP I Vibration detect input “Hi” : Vibration detect17 MGSW I Magazin

24、e switch input “Hi” : Magazine in18 EJSW I Eject switch input “Hi” : Eject switch ON19 COMMSW I 5-line communication old/new switch input “Hi” : New communication, “Lo” : Old communication20 PACK I Text data pack synchronous signal input “Hi”“Lo” : The head of the pack data21 CH-CON I Changer contro

25、l input “Hi” : Standby mode, “Lo” : Operation mode22 BUDET I Momentary power down detection input“Hi” : When momentary power down detected orBU OFF “Lo” : BU ON23 AVDD - A/D converter positive power supply connection terminal Connected to D 5V lines24 AVREF0 I A/D converter reference voltage input C

26、onnected to PON 5V lines25 HOT I Rise in temperature detection input26 LPS I LPS Mechanical deck position detection input27 LOESW I Loading complete switch input “Lo” : Loading complete28 LIMSW I Limit switch input “Lo” : Pickup most inner position29 TOFF I Tracking OFF mode terminal Not used (pull

27、down to GND lines)30 ADJSEL I Servo automatic adjustment ON/OFF terminal Not used (pull down to GND lines)31 TBANK I Tracking gain switching mode terminal Not used (pull down to GND lines)32 SIM2 I Destination input 2 Not used (pull down to GND lines)33 AVSS - A/D, D/A converter ground connection te

28、rminal Connected to GND lines34 LPSCO O LPS A/D converter reference power control output Not used (N.C.)35 AMUTE O Audio mute output “Lo” : Audio mute ON36 AVREF1 I D/A converter reference voltage input Connected to D 5V lines37 SDI I Servo IC communication serial data input38 SDO O Servo IC communi

29、cation serial data output39 SCK O Servo IC communication serial clock outputMICROCOMPUTERS TERMINAL DESCRIPTIONKDC-C471FM/C521FM7Pin No. Pin Name I/O Description Processing Operation40 DATAH I Data input from H/U41 DATAC O Data output from the changer42 HCLK I/O Communication clock input/output with

30、 H/U43 RECQC O Communication request to H/U “Lo” : Communication requested44 CHMUTE O Audio mute request to H/U “Lo” : Audio mute requested45 TSI I Text data input from servo IC46 TSO O Text data output to servo IC47 TSCK O Text data clock to servo IC4855 A0A7 O Address setting terminal for S RAM566

31、3 D0D7 I/O Data input/output terminal with S RAM6468 A8A12 O Address setting terminal for S RAM6971 A13A15 O Chip enable setting terminal for S RAM Not used (pull down to GND lines)72 VSS - Ground connection terminal Connected to GND lines73 A16 O Chip enable setting terminal for S RAM Not used (pul

32、l down to GND lines)74 A17 O Chip enable setting terminal for S RAM75 RAMOK O Pickup check judging terminal for production Not used (N.C.)76 ELVADJ I Mechanism deck ascent/descent position terminal Not used (pull up to D 5V lines)77 RD O Read-out to S RAM control output78 WR O Write to S RAM control

33、 output79 WAIT I Waiting time insertion input when accessing S RAM Not used (pull down to GND lines)80 ASTB O Chip selection to S RAM Not used (N.C.)81 VDD - Positive power supply connection terminal Connected to D 5V lines82 PUSEL I Pickup type select terminal Pull up to D 5V lines83 REQH I Communi

34、cation request from H/U “Lo” : Communication requested84 SPLO+ O Spindle/Loading control terminal85 SPLO- O Spindle/Loading control terminal86 ELV+ O Mechanism deck ascent/descent terminal87 ELV- O Mechanism deck ascent/descent terminal88 SIM1 I Destination input 1 “Lo” : adapted for CD-TEXT, “Hi” :

35、 not adapted for CD-TEXT89 SEARCH O Search mode output Not used (N.C.)90 TEST1 I Test mode terminal 1 for test mode Not used (pull down to GND lines)91 TEST2 I Test mode terminal 2 for test mode Not used (pull down to GND lines)92 8/7V O Motor driver IC power voltage control output “Hi” : 7V, “Lo” :

36、 8.5V93 EEPWR I EEPROM write mode terminal for production Not used (pull down to GND lines)94 TEST/VPP I Flash ROM program mode terminal Not used (connected to GND lines)95 SRVSEL I Servo active mode terminal (no mechanism movement) Not used (pull down to GND lines)96 SLNSA I Sled non-sensitive area

37、 ON/OFF terminal Not used (pull down to GND lines)97 SDA I/O Data input/output with EEPROM98 SCL O Clock output to EEPROM99 PON O PON output “Lo” : AVR & LPS POWER ON100 ARMSW I Arm switch input “Hi” : Arm switch ONMICROCOMPUTERS TERMINAL DESCRIPTIONKDC-C471FM/C521FM8 SYSTEM MICROCOMPUTER : LC72366-

38、9B63 (FM MODULATOR UNIT : IC501)Pin No. Pin Name I/O Terminal name Description Operation in HOLD1 XIN I X IN X_tal -2 TEST2 - GND Ground connection terminal -35 PG31 O NC Not used (pull down to GND lines.) L6 PG0 I GND Connected to GND lines. -7 PF3 O NC Not used (open) L8 PF2 I REQC CD-Changer REQC

39、 (Active “Low”) -9 PF1 O REQH CD-Changer REQH (Active “Low”) H10 PF0 O CHCON CD-Changer ON L11 SI2 I CH_DATA_C CD-Changer DATA in -12 SO2 O CH_DATA_H CD-Changer DATA out L13 SCK2 O CH_CLK CD-Changer DATA SCK (Active “Low”) H14 PE0 O NC Not used (open) L15 PD3 O LCD DATA out LCD Driver DATA out L16 P

40、D2 O LCD CLK LCD Driver CLK out L17 PD1 O LCD RESET LCD Driver RESET out L18 PD0 O LCD CE LCD Driver CE out L1926 PC3PB0 O NC Not used (open) L27 PA3 I LCD DATA in LCD Driver DATA in -2830 PA20 I NC Not used (pull down to GND lines.) -31 VDD - Vdd 5V -32 PQ0 O NC Not used (open) L3344 PP3PN0 O GAIN1

41、21 Modulation output switching L45 PM3 O SEP-ATT When it has GAIN5 output, “Hi” output L4652 PM2PL0 O NC Not used (open) L53 PK3 O RELAY Antenna relay control output terminal L54 PK2 O P-on P_ON L55 PK1 O MUTE Mute output terminal for the Tuner frequency change L56 INT0 I REMOCON Remote controller s

42、ignal input5760 PJ30 O NC Not used (open) L6166 PI1PH0 I NC Not used (pull down to GND lines.) -67 HOLD I HOLD ACC detection (Operation in HOLD “Low”) L68 SNS I Vdd Vdd -69 LCTR I NC Not used (pull down to GND lines.) -70 HCTR I NC Not used (pull down to GND lines.) -71 EO3 O NC Not used (open) Hi-Z

43、72 SUBPD O NC Not used (open) Hi-Z73 VDD - Vdd Vdd -74 AMIN I NC Not used (pull down to GND lines.) -75 FMIN I VCO in VCO input -76 VSS - Vss Vss -77 EO2 O NC Not used (open) Hi-Z78 EO1 O Error out Phase Detector Error output Hi-Z79 TEST1 - NC Not used (pull down to GND lines.) -80 XOUT O X-out X-ta

44、lMICROCOMPUTERS TERMINAL DESCRIPTIONKDC-C471FM/C521FM9 L.P.S. initial position adjustment procedure1. Connect the changer to the HEAD 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.

45、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 deck to around the 1st stage by press-ing the DISC- or DISC+ button.6. Insert the adjustment tool (W05-0635-00) into the tool holeon the changer mechanism.7. Then press the DIS

46、C+ button to move the mechanism deckuntil the mechanisms slider hits the adjustment tool.8. When the motor locks (stops), press the REPEAT key ofthe H/U.When the REPEAT key is pressed, the mechanism movesautomatically to the 1st stage and the initial position adjust-ment completes. (The data is writ

47、ten in the EEPROM atthis time.) Caution : Note on IC8 (EEPROM)Be sure to use the W05-0869-00 when replacing theEEPROM. IC8 stores the digital servo data of the pickupservo.Therefore, if the EEPROM does not store servo data, ER-ROR76 (E-76) will indicate the H/Us display section at themoment CD is pl

48、ayed.Instrument :SSG, OSC (5MHz), AC VOLTMETER, PWR SUPPLY, H/UNIT, CD-CHRECEIVERALIGNMENTNo. ITEM INPUT SETTINGS OUTPUT SETTINGS (MODULATOR)POINTSALIGN FOR FIG.FREQL/R Balance CD-CH cignal offConnect a1Adj. (Tr No.29 or Pause)Oscilloscope 88.3MHz VR301 Min Level (a)to Q301 Base.1. Ref.FM 1kHz 80dBV

49、 Connect aDifference between2ModurationStereo, CD-CH Tr No.1 AC voltmeter 88.3MHz VR302FM and a CD-CHlevel Adj.2. D.Cont Off MOD Lv:2 to Receiver PreOutlevel 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 : 5mV2. TIME/DIV : 50sAdjusted to bemin level point(Before Adj.) (After Adj.)Fig. (a)W05-0635-00ADJUSTMENTKDC-C471FM/C521FM10A B C D E1234567PC BOARD (COMPONENT SIDE VIEW)C63R68C52R78R79C72R133C61 R77C68R97R206C17R146C8R16C7C3R4C4R87 R84R145C16C15R54