Kenwood-KDC-3024-A-Service-Manual电路原理图.pdf

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1、 2002-11 PRINTED IN JAPANB53-0002-00 (N)1874COMPACTDIGITAL AUDIORDMLOUD REPSCANOFFKDC-XXXXPTYVOL. ADJTIMENUCLKAUD50Wx4Panel assy(A64-2876-02): KDC-3024A/G/YA/YG(A64-2877-02): KDC-307A/G/YEscutcheon(B07-3001-02)A/YGDC cord(E30-4790-05)Plastic cabinet assy(A02-1486-13)Lever(D10-4589-04)x2Antenna adapt

2、or(T90-0523-05)Mounting hard ware assy(J21-9716-03)CD RECEIVERKDC-3024A/G/YA/YGKDC-307A/G/YA/YGSERVICE MANUALCD mechanism operation description is not in this sarvice manual.Please, refer to sarvice manual X92-4030-0x (B51-7867-00).CD mechanism extension cord : W05-0618-00KDC-3024A/G/YA/YG,307A/G/YA

3、/YG2BLOCK DIAGRAM1200mV1200mVCD : 3600mVCH : 3600mVAM(E) : 855mVFM(E) : 1372mVFM(J,K) : 1800mVAM(J,K) : 600mVCHANGERKEY MATRIXWITHLCD DRIVERLCDREMOCONMI-COMCDANTAM AGCFM AGCDECODERRDSRESETICEEP-ROMTUNER,MPX &E-VOL.SUPPLY ICSW5VSERVOP-ANTP-CONPOWERMUTELOGICDETACCBUDETMUTEPREPOWER ICSPACCUPBACKOUTOUTP

4、REIC1DATA HMUTEDATA CREQ HCH-CONAUDIO OUTCLKREQ CRSTBACK UPBU5VIC2SW5VLO/SRSTLOE/LIMMOLO/EJSTOPMUTE8EJESDASCLKAUDIO OUT12EJEQ501Q502AM+BFM+BAM AGC OUTIC6CHCDSERVOBU5VA8VTUNER OUTBU5VIC11IC12IC10FM AGC OUTA8VSW2SW1ILLUMIVCCBU5VAUDIO+BAM+BFM+BBACK LIGHTKEY ILLUMIQ51,55SW5VQ50SERVOBU5VFM+BAM+BA8VP-CONP

5、-ANTIC8Q20Q10IC7MUTEQ223,224IC4KDC-3024A/G/YA/YG,307A/G/YA/YG3a71 SWITCH UNIT (X16-1472-7x)COMPONENTS DESCRIPTIONRef.No. Application/Functions Operation/Condition/CompatibilityIC1 LCD driver & key matrixQ1 Key scan start When Q1 base goes Lo, key scan start.a71 ELECTRIC UNIT (X25-9612-7x)Ref.No. App

6、lication/Functions Operation/Condition/CompatibilityIC1 System control -com System -comIC4 Power amplifire E-Vol output encoder power amplification for speaker.IC6 RDS decoder RDS data decode to tuner receive signals.IC7 Power supply (Multi AVR) -When a pin 1, 2, or 13 is “H“, MUTE turns onIC8 MUTE

7、Logic When a pin 3, 4, or 5 is “H“, P-AMP mute turns ON.Changer is RESET when a pin 9, 10, or 11 is “L“.IC10 Tuner & E-Vol. FM/AM tuner & stereo decoder & E-Vol.IC11 Power on reset When B.U. 5V voltage is less than 3.5V, power reset.IC12 E2P-ROM Writing and read-out of adjustment data for a tunerQ10

8、 B.U. detector BU on (base “H“) : Collector “H“Q20 A.C.C detector ACC ON (base : “H“) : Collector “L“Q40 MUTE driver Base “L“ : Mute on (collector “L“)Q50 SW 5V Base “L“ : SW5V onQ51 SERBO AVR control Pin 2 “H“ : Serbo on (pin 4 “H“)Q55 SERBO AVR Base “H“ : Serbo onQ70 Surge detector Base “H“ : Surg

9、e detectQ101 DSI driver Base “H“ : DSI onQ102 PANEL 5V SW Panel attch : PAN5V onQ201 Noise buffer Tuner noise input, Emitter outputQ223,224 MUTE Base “H“ : Mute onQ252 S_METER RC & MPTH TC SW Base “H“ : RC&TC=Long (Base “L“ at AF serch)Q253 S_METER RC & MPTH TC SW Emitter “H“: Collector “H“Q501 AM R

10、F amplifire Base “H“ : Gain UPQ502 FM RF amplifire Gate “H“ :Gain UPQ503 MPX buffer MPX input buffer with RDSKDC-3024A/G/YA/YG,307A/G/YA/YGMICROCOMPUTERS TERMINAL DESCRIPTION4a71 SYSTEM MICROCOMPUTER uPD780058GC502 (X25 : IC1)Pin No. Name I/O Description Processing Operation1 TDF DET I Panel detecti

11、on H:Panel detached L:Panel attached2 8EJE SW IH:Eject is completed Except 8cm CD model:always output L3 NC O Not used (out put L)4 AvssH:Panel detached L:RESET5 L-RST O LCD driver RESET 3 normal H , Power off LWhen 7seg model,output L6 L-CE O LCD driver selectionH:Select (panel communication)When p

12、anel attached,output L7 AVREF18 NC Not used (connected to 9pin)9 IC10-DATA I/O IC10,E2PROM data communication 3 non communication : H10 IC10-CLK O IC10,E2PROM clock communication 3 non communication : HNon communication : H11 L-DATAL I Data input from the LCD driver When panel detached : L3 Pull dow

13、n on X25 unit,Pull up on X16 unit12 L-DATAS O Data output to the LCD driver When panel detached , output L13 L-CLK O Clock output to the LCD driver When panel detached , output L14 R-DATA I Data input from the RDS Except RDS model : output L15 R-QUAL I Quality input from the RDS Except RDS model : o

14、utput L16 CH-DATAC I Data input from the changer (new 5L) Except changer model : output L17 CH-DATAH O Data output to the changer (new 5L)When non communication ,last data keepingExcept changer model : output L18 CH-CLK I/O Clock input/output with the Changer (new 5L)Check the old and newExcept chan

15、ger model : output L19 CH-REQH O Request output to the changer (new 5L)L:RequsetExcept changer model : output L20 NC O Not used (output L)21 AFS O Noise detection time constant switching terminalH:Normal L:FM/AM seek and AF search3 (When tuner SRC auto zero , L)22-24 NC O Not used (output L)25 CH-CO

16、NT O Changer controlH:Changer on L:Changer offExcept changer model : output L26 TYPE REF O 5V lines output for destination setting H:During destination reading27 SD I Tuner SD input H:Station detected28 NC O Not used (output L)29 TYPE2 I Destination type selection terminal 2 Refer to destination typ

17、e list.30 TYPE1 I Destination type selection terminal 1 Refer to destination type list.31 TYPE0 I Destination type selection terminal 0 Refer to destination type list.32 TUNER-TYPE1 I Destination available/genuine model rool off H:genuine model 1 L:available model33 Vss134 TUNER-TYPE0 I Destination

18、available/genuine model noise cancel H:genuine model 0 L:available model35 MUTE O Mute (E.Vol,Preset) controlH:mute on L:mute offPower off after that 15 second L36 M-DATA I/O Data input/output with the CD mechanism 3 non communication : H37 M-CLK O Clock output to the CD mechanism 3 non communicatio

19、n : HWhen adjustment = H38 ADJ O Tuner lines adjustment PS1-0,1=L PS1-2,2-0,1=Hi-zIC10-DATA,CLK=Hi-z39 P-MUTE O Power IC mute controlH:mute off L:mute onPower off after that 15 second H40 SVR O Power IC servo controlH:When momentary power down detectedL:Nomal41 P-STBY O Power IC standby control H:Po

20、wer IC ON L:Power IC OFF42 SW5V OSW 5V control H:SW5V OFF L:SW5V ONPower off after that 10 second HKDC-3024A/G/YA/YG,307A/G/YA/YGMICROCOMPUTERS TERMINAL DESCRIPTION5Pin No. Name I/O Description Processing Operation43 B.U-DET I Back up detection terminal H:power down L:B.U. on44 ACC-DET I ACC detecti

21、on terminal H:ACC OFF L:ACC ON45 PS1-0 OPower supply IC SW1 control 0Audio 8V,P-CON46 PS1-1 OPower supply IC SW1 control 1Audio 8V,P-CON47 PS1-2 O Power supply IC SW1 control 2 P-ANTPower supply IC SW2 control 048 PS2-0 OILL,FM,AMPower supply IC SW2 control 149 PS2-1 OILL,FM,AM50 BEEP BEEPH:Light on

22、 L:Light off51 DSI O DSI controlWhen panel attached,output LWhen panel detached,flashing at the panel (H/L)FIX model is output L52 NC O Not used (out put L)53 NC O Not used (out put L)54 LOE/LIM SW I CD mechanism down&limit detection H:Chucking detection L:Normal55 MO SW O CD mechanism loading motor

23、 control output H:Loading,Eject,Break L:Play56 LO/EJ I/O CD mechanism loading/Eject switching terminal H:Eject L:Loading57 M-STOP O Stop output to the CD mechanism H:Play L:Stop58 M-RST O Reset output to the CD mechanism H:Normal L:CD mechanism reset59 M-MUTE I Mute input from the CD mechanism H:mut

24、e off L:mute on60 RESET Reset input from the System microcomputer61 REMO I Remote control input62 R-CLK I RDS clock input Except RDS model : output LH:Changer detection63 CH-REQC I Request input from the changer (new 5L) L:RequestExcept Changer model : output L64 LOS SW I CD mechanism loadings switc

25、h detectedH:No discL:DISK IN(Loading Start)65 KEY-REQ IKey input detected H:Key no input(11pin L connected to the DATA L) L:Key input (edge key data reading start)66 12EJE SW I 12cm disc detected L:12cm disc67 Vss068 VDD169 X2 3 MAIN Xtal oscillating circuit 3 4.19MHz Xtal connection70 X1 3 MAIN Xta

26、l oscillating circuit 3 4.19MHz Xtal connection71 IC TEST72 XT2 Not used OPEN73 XT174 VDD0 VDD Connected to VDD75 AVREF0A/D converter reference voltage control output,connection to the 80pin AVCONT76 S-METER I S-meter input77 NOISE I FM noise detection input 32.5V or greater:NAVI MUTE78 PHONE I 2way

27、 mute 1.0V or less:TEL MUTEExcept phone mute model : output L79 NC O Not used (out put L)80 AVCONT O A/D converter standard voltage control outputH:During A/D converter activesame timing with PONBA4911 SW1 Power supply IC outputPS1-2 PS1-1 PS1-0 A8V P-CON P-ANTL L L STANBYLL(H)H(L)ON OFF OFFL H H ON

28、 ON OFFH H H ONONONBA4911 SW2 Power supply IC outputPS2-1 PS2-0 ILLUMI FM AML L STANBYL(H) H(L) ON ON OFFH H ON OFF ONKDC-3024A/G/YA/YG,307A/G/YA/YGMICROCOMPUTERS TERMINAL DESCRIPTION6a71 MECHANISM MICROCOMPUTER MN6627771KP (X32 : IC2)Pin No. Name I/O Description Processing Operation1 TVD O Traverse

29、 driver output (PWM output)2 SPL O Spindle motor drive output (PWM output)3 PC O Spindle motor ON output L:ON H:OFF (default )4 PWM O multi-purpose PWM output Its possible to setup the TOSF25 TBAL O Tracking balance adjust output (PWM output)6 FBAL O Focus balance adjust output (PWM output)7 NRFDET

30、I RF detection signal input L:detected 8 OFT I Off-track signal input H:detected9 BDO I Drop out signal input H:detected10 LDON O Laser on signal output H:ON When command FO on,LDON is H11 DSLB O DSL balance output12 DVDD1 - Power supply for digital circuit13 DVSS1 - Ground lines for digital circuit

31、14 AVSS2 - Ground lines for analog circuit For DSL,PLL and AD15 DSLF I/O Loop filter terminal for DSL The bias of ARF output terminal in one16 ARF I RF signal input17 RFSW I When DSL circuit,constant switch terminal18 PLLF I/O Loop filter terminal for PLL19 PLLF2 I/O Loop filter characteristic switc

32、hing terminal for PLL20 IREF I Standard voltage input terminal21 RFENV I RF envelope signal input Analog input22 TRCRS I Track cross signal input Analog input23 TE I Tracking error signal input Analog input24 FE I Focusing error signal input Analog input25 AVDD2 - Power supply for analog circuit For

33、 DSL,PLL and AD26 AVSS1 - Ground lines for analog circuit For audio output (Lch and Rch in one)27 OUTR O Rch audio output28 AVDD1 - Power supply for analog circuit For audio output (Lch and Rch in one)29 OUTL O Lch audio output30 DVSS3 - Ground lines for digital circuit31 CSEL I Oscillation frequenc

34、y specification terminal H:33.8488MHz L:16.9344MHz32 NC O Not used33 ASEL I Audio output polarity switching terminal L:Reverse H:Non reverse34 MSEL0 I Destination type selection port (set 2bit) Order “MSEL 0“ and “MSEL 1“ Set up35 MSEL1 I Destination type selection port (set 2bit) Order “MSEL 0“ and

35、 “MSEL 1“ Set up36 ICRST O Reset control terminal for external DAC37 BCLK O Bit clock output for serial data38 LRCK O L/R identification signal output39 SRDATA O Sirial data output40 VREFP I A/D converter standard power supply input41 HOT I Temperature protection detection terminal (AD input) Over C

36、5(h):on42 8EJE_SW I 8cm disc eject stop detection terminal H:Stop43 12EJE/SDET_SW I Judge the 8cm or 12cm disc 12cm disc stop detection terminal44 LOE/LIM_SW I Pick-up inside detected Loading end detection terminal45 PCK O PLL extracted clock output,etc46 EFM O EFM signal output,etc47 SENSE O Optics

37、 servo status signal output,etc48 CLVS O Spindle servo phase synchronous signal output,etc L:Normal operation H:Luff servo49 DEMPH O Dephase detection signal output,etc H:on50 DVDD2 - Power supply for digital circuit51 X1 I Main clock input terminalKDC-3024A/G/YA/YG,307A/G/YA/YGMICROCOMPUTERS TERMIN

38、AL DESCRIPTION7Pin No. Name I/O Description Processing Operation52 X2 O Main clock output terminal53 DVSS2 - Ground lines for digital circuit54 XSUB1 I When external DAC,external clock input terminal55 XSUB2 O56 TEST1 I Test port 1 Normal operation is H fixed 57 TEST2 I Test port 2 Normal operation

39、is H fixed 58 NC O Not used59 VER/HOR O Put length or breadth switching motor terminal H:Put length L:Put breadth60 DRV_MUTE O Driver mute control terminal L:MUTE ON H:MUTE OFF61 /MUTE_L O Audio Lch MUTE output L:MUTE62 /MUTE_R O Audio Rch MUTE output L:MUTE63 /RST I LSI reset input terminal H:Norma

40、l L:Reset64 OCD_CLK I When OCD connected, clock input65 /MSTOP I Standby detection terminal H:Normal L:Mecha stop66 DATA I/O I2C bus data line (communication line with system computer) At that time serial writer connected67 SBIO I When connected to serial writer,data input terminal68 /CLK I/O I2C bu

41、s clock line (communication line with system computer) At that time serial writer connected69 TX O Digital audio interface signal output70 EQCNT O RF EQ switching terminal L:x2 times H:x1 times71 XSEL I During the external DAC connection MCLK external input (H:input)72 MCNT I CD mecha Loading/Eject

42、control ON/OFF L:OFF (HOST control) H:mechanism control73 P-ON O Audio and servo origin power control terminal L:power on H:power off74 MOTOR O Loading/Eject control switching terminal At that time LO/EJ is “H“75 LO/EJ O Loading/Eject control terminal or output L When 72pin (P82) is “L“,output “L“76

43、 CD-RW O CD-RW control terminal H:CD-RW L:normal77 LDCNT O LD control terminal Operation is same LDON as timing78 DVDD3 - Power supply for digital circuit79 FOD O Focus driver output (PWM output)80 TRD O Tracking driver output (PWM output)TYPE2 TYPE1 TYPE0 MODEL NAMEL L L KDC-2024SA/SYA, 2024SG/SYGu

44、PD780058GC499L L H KDC-2022, 2022V,202MRL H L RY-391CD, RX-491CDL H H KDC-4023, 2023, 3023L L H KDC-122, 122SuPD780058GC501 L H H KDC-1023, 1023SH L H KDC-222, 222SL L L KDC-3024G/YG, 307G/YGuPD780058GC502L H H KDC-3023RH L L KDC-3024A/YA, 307A/YAH L H KDC-4024/Y/V/YVuPD780058GC503 L L L KDC-2094YA/

45、YGH: R135 R137 R139L: R136 R138 R140System mi-com Destination type listKDC-3024A/G/YA/YG,307A/G/YA/YGADJUSTMENT81. IC10 (TDA7513) -The Tuner adjustment method When IC10 and its circumference are fixed, according to the following order, it readjusts if needed. The adjustment item changes with parts t

46、o exchange. Please refer to “Parts vs Adjustment item table“.1-1. VCO Coil Adjustment - Adjustment of Tunning VoltageVoltage Check Point : Vt-Check Land (PWB Side_B, around D506)Adjustment Coil : L507 (VCO Coil)The adjustment method : VCO coil is turned and adjusted according to the following tables

47、.M : AM AdjustmentFor Your Information : The frequency of SET is only set up by Pre-Set-Key in case this adjustmenta120The appearance and the coil with which S-METER DC voltage serves as the maximum are turned and adjusted in the above-mentioned SG input.By the above-mentioned adjustment method, sam

48、e adjustment is performed to both sides (1st&2nd MIX Coil).TYPE Mode freq. Voltage FigE/M AM 1611kHz 5.5 0.1(V) (C)K AM 1700kHz 5.8 0.1(V) (C)J FM 90.0MHz 5.6 0.1(V) (C)W(Wide Band) FM 108.0MHz 7.2 0.1(V) (C)1-2. Adjustment of 1st & 2nd-MIX CoilVoltage Check Point : S_METER-Check Land (PWB Side_B, a

49、round W572)Adjustment Coil : 1stIFT = L508 / 2ndIFT = L509Setting of Signal Generator : Refer to the following tablesTYPE MODE freq. Mod. ANT Input FigK AM 1000kHz OFF 35dBuEMF (B),(C)E,M,J,W AM 999kHz OFF 35dBuEMF (B),(C)a120The appearance and the coil with which S-METER DC voltage serves as the maximum are turned and adjusted in the above-mentioned SG input.By the above-mentioned adjustment method, same adjustment is performed to both sides (ANT&RF Coil).1-3. Adjustme