Kenwood-KDC-3024-YA-Service-Manual电路原理图.pdf
© 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 adaptor(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/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 ICSPACCUPBACKOUTOUTPREIC1DATA 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-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. Application/Functions Operation/Condition/CompatibilityIC1 System control µ-com System µ-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 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 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“ : Surge 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 RF 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/YGMICROCOMPUTER'S TERMINAL DESCRIPTION4a71 SYSTEM MICROCOMPUTER uPD780058GC502 (X25 : IC1)Pin No. Name I/O Description Processing Operation1 TDF DET I Panel detection 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 panel 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 down 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 : output 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 changer 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-CONT 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 type 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 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 communication : 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:Power 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/YGMICROCOMPUTER'S 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 detection 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 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 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:mute 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 loading's switch 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 X'tal oscillating circuit 3 4.19MHz X'tal connection70 X1 3 MAIN X'tal oscillating circuit 3 4.19MHz X'tal 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 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 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/YGMICROCOMPUTER'S TERMINAL DESCRIPTION6a71 MECHANISM MICROCOMPUTER MN6627771KP (X32 : IC2)Pin No. Name I/O Description Processing Operation1 TVD O Traverse 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 It's possible to setup the TOSF25 TBAL O Tracking balance adjust output (PWM output)6 FBAL O Focus balance adjust output (PWM output)7 NRFDET 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 circuit14 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 switching 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 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 frequency 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 “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 C5(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 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/YGMICROCOMPUTER'S TERMINAL 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 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:Normal 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 bus 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 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 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/SYGuPD780058GC499L 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/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 to 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.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, same 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, around 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
