Kenwood-KDC-4751-SD-Service-Manual电路原理图.pdf

This product uses Lead Free solder.This product complies with the RoHS directive for the European market.PbF© 2011-4 PRINTED IN JA PANB53-0844-00 (N) 303SERVICE MANUALKDC-348U/4751SDKDC-BT41U/BT648UKDC-U4549/U4549SD/U549BTKDC-X395/X695CD RECEIVERTDF SPARE-PANELMAIN UNIT NAME TDF PARTS No. TDF NAMEKDC-348U Y33-3490-11 TDF-113DKDC-4751SD Y33-3482-73 TDF-4751SDKDC-BT41U Y33-3482-71 TDF-BT41UKDC-BT648UKDC-U4549 Y33-3490-21 TDF-U4549KDC-U4549SD Y33-3480-22 TDF-U4549SDKDC-U549BT Y33-3480-21 TDF-U549BTKDC-X395 Y33-3490-10 TDF-113DXKDC-X695 Y33-3480-11 TDF-116DXKDC-4751SD : Panel assy (A64-5245-02)Y33-3480-10 TDF-BT116DAfter replacing E2PROM (IC203 on X34), tuner setting adjustment is needed.The adjustment is that to perform the “TUNER Setting Adjustment Mode” (Page 13).Tuner setting adjustment after replacing E2PROMMounting hardware assy(J22-2049-03)Lever(D10-7139-04) x2* DC cord(E30-6933-05)* Screw set(N99-1757-15)* Carrying case(W01-xxxx-xx)* DC cord(E30-6934-05)* Tap screw (2x8)(N80-2008-48)* Plastic cabinet assy(A02-2757-13)* Remote controller assy (RC-405)(A70-2104-05)* Trim plate(xxx-xxxx-xx)* Microphone (3m)(W01-1768-15)* Depends on the model. Refer to the parts list.KDC-X695 : Panel assy (A64-5241-12)KDC-BT648U : Panel assy (A64-5240-02)KDC-U4549SD : Panel assy (A64-5246-12)KDC-U549BT : Panel assy (A64-5244-12)KDC-BT41U : Panel assy (A64-5242-12)2KDC-348U/4751SD/BT41U/BT648U/U4549/U4549SD/U549BT/X395/X695BLOCK DIAGRAMELECTRIC UNIT (X34- )SWITCH UNIT (X16- )E-VOLIC401SYSTEM u-COMSW14VQ3,4A8VBU5VSW5VRESETIC202RESET SWIC201IC801J1ILLUMI+BJ701MUTEQ707,708IC501J601S301A8VIC1ICSUPPLYPOWERMUTEPREPRE-OUTDC-CNBUDC/DC5VQ51CDMECHADME1SWHI-SIDEIC71A901LX-BUSFLED1MATRIXKEYSHIFTLEVELIC301SERVO+BIC902BT3.3VBTMODULEBU5VTUNERATOMICBU5VMIC CNJ921602SHIFTLEVELBU3.3VQ701-706W551BUPOWER ICBU5VBU3.3VIC601,ROME2PIC203SW3.3VBU5V4VPRE+B A8VSHIFTLEVELSWREG5VIC802iPodAUTHENTICATIONIC261SW3.3VAM+BLPFIC901SWANALOGIC921AGC AMPIC451SPE-ANASWREG5VBT3.3VTYPE1,2BU3.3VCN901SD SLOTSD3.3VSURGEDETQ102BU DETQ301Q101ACC DETQ105ILLUMI DETLINE MUTED105AM+BSHIFTLEVELQ5-10SERVO+BQ1,24VPRE+BQ91,92BU3.3VSW3.3VQ302Q103PANEL3.3VQ301BU3.3VBU3.3V or SW3.3VBU5VSWREG5V4VPRE+BSERVO+BBU3.3VSW3.3VPANEL3.3VQ951SD3.3VBT3.3VUSB5VSD3.3V BU3.3VSWREG5VSW3.3VFL+BREMOTEILLUMIKEYCN DETUSB CNJ3J1CONNECTORIC2to GNDAUX CNJ2USB5VJ301ILLUMI+BPANEL3.3VROTARYENCODERS1SW3.3V FL+BMIC CNCN1SWREG5VBU DET112PS1-1ACC-DETOME-RCFRONT/REAR/NFPS1-2PS1-3P-ANTP-CONMUTEOEM RCACCBUFRONT L/RREAR L/R2(4MHz)2219 8 622113331225ILLUMIP-ANTACCILLUMIMUTEOEM RCP-CONILLUMIACCMUTEP-ANTP-CON4PON-PAN3PON-SW3PON-4VPREILL-DETPON-PAN3PON-4VPRESD-PWRSW-VBUSPS1-3PON-SW3PON-SWERGACC-DETLINE-MUTEILLUMI-DETBU-DETPS1-1PS2-1SD PWRVBUS OC SW VBUSPON-SWREGFSELPS2-1PS1-2LINE MUTEBU-DETFSELVBUS-OCMAIN CLOCK = 48MHz (CRYSTAL 12MHz)SUB CLOCK = 32.768kHz (QUARTZ)(2.8V)211OEM RC593KDC-348U/4751SD/BT41U/BT648U/U4549/U4549SD/U549BT/X395/X695BLOCK DIAGRAMDPU1CD PLAYER UNIT (X32-6250-02)BOARDMOTHER(X34- )EFACBTR COILFO COILAPCIC416.934MHzCLOCKIC3LOADING &MOTORDRIVERMOTORSPINDLES2S1SLEDMOTORDM1DM2X1Q1RF AMPSERVOMP3 DECODERWMA DECODER1M bit SRAMPROCESSORAAC DECODER+LEVEL SHIFTRESISTORFILTERFILTERD1.5VIC5Q14REGBU1.5V/OUTPUTD3.3VVREF12EJE-SWLOS-SWLOE-SWMOTORLO/EJA.GNDTR OUTFO OUTDM OUTFM OUTA3.3VLDSIGNAL A/B/C/E/FS.GNDS7.5VFO OUTTR OUTDM OUTFM OUTDRV MUTESOSRAM STBSIBUCKCCEPIO0R15SRAM STBBUCKCCEPIO0SOSIMRST MRSTC43C44RchLch LchRchZDET MUTE L/RD.GNDD GND BU1.5VD1.5V D3.3VAGNDBU5VP.ONPD4KDC-348U/4751SD/BT41U/BT648U/U4549/U4549SD/U549BT/X395/X695COMPONENTS DESCRIPTION ELECTRIC UNIT (X34-696x-xx)Ref. No. Application / Function Operation / Condition / CompatibilityIC1 Power Supply IC Outputs 5Vx2, 8V, 8.3V, 10.3V, P-CON, P-ANT.IC21 3.3V AVR IC Power supply for BU+3.3V to -COM.IC51 SW REG Power supply for D+5.1V to USB and panel.IC71 Hi-side SW USB over-current detection.IC201 System -COM Controls FM/AM tuner, CD mechanism, panel, volume.IC202 Reset IC Lo when detection voltage goes below 2.8V.IC203 E2PROM For log memory.IC261 iPod Authentication IC For Apple authentication.IC301 3.3V to 5V Level shift.IC401 E-VOL Controls the source and volume.IC501 ATomIC RDS Tuner IC.IC601,602 3.3V to 5V Level shift.IC801 Power IC Amplifi es the front L/R and the rear L/R to 50W maximum.IC802 3.3V to 5V Level shift.IC901 BT LPF Bluetooth output low pass fi lter.IC902 3.3V AVR Power supply for BT/SD+3.3V.IC921 Switch IC MIC switching signal (Panel microphone/ Rear microphone)Q1,2 SERVO+B AVR When Q2s base goes Hi, AVR outputs 7.5V.Q3,4 Control SW for SERVO+B ON when Q3s base goes Hi.Q5,6 Control SW for IC1 ON when Q5s base goes Hi.Q7,8 Control SW for IC1 ON when Q7s base goes Hi.Q9,10 Control SW for IC1 ON when Q9s base goes Hi.Q51 FREQ CONT SW for IC51 1.1MHz when the base goes Lo, 1.7MHz when the base goes Hi.Q91,92 4V PREOUT+B AVR When Q92s base goes Hi, AVR outputs 12V.Q93,94 CONT SW for 4V PREOUT+B ON when Q94s base goes Hi.Q101 ACC DET ON when the base goes Hi during ACC is applied.Q102 Surge DET When the base goes Hi, surge voltage is detected.Q103 BU DET ON when the base goes Hi during BU is applied.Q104 Mute CONT ON when the base goes Hi.Q301 PAN3.3V SW ON when the base goes Lo.Q302 SW3.3V SW ON when the base goes Lo.Q701,702 Pre-out Mute SW When one of 2 bases goes Hi, pre-out is muted.Q703,704 Pre-out Mute SW When one of 2 bases goes Hi, pre-out is muted.Q705,706 Pre-out Mute SW When one of 2 bases goes Hi, pre-out is muted.Q707,708 Mute Driver for Pre-out ON when the base goes Lo.Q921 MIC SW CONT Rear MIC when the base goes Lo, panel MIC when the base goes Hi.Q951 SD3.3V SW ON when the base goes Lo.5KDC-348U/4751SD/BT41U/BT648U/U4549/U4549SD/U549BT/X395/X695 CD PLAYER UNIT (X32-6250-02)Ref. No. Application / Function Operation / Condition / CompatibilityIC3 4ch BTL DriverDriver for focusing & tracking coil, driver for sled & spindle motor, and operation for disc loading & ejection.IC4 Servo DSP with built-in Audio DAC With built-in MP3/WMA/ACC decoder and 1M-bit-SRAM.IC5 BU1.5V/D3.3V REG.Power supply for BU1.5V.Power supply for digital/analogue/audio 3.3V.Q1 APC (Auto Power Control) Drives LD (Laser Diode).Q14 D1.5V OutputSwitches ON/OFF at one end of BU1.5V line which is separated into 2 directions.Uses output voltage as D1.5V.D2 Laser Diode ProtectionPrevents reverse bias which is applied to laser.Laser destruction prevention.D3,4 Static Electricity Countermeasure Prevents malfunction by static electricity.COMPONENTS DESCRIPTION6KDC-348U/4751SD/BT41U/BT648U/U4549/U4549SD/U549BT/X395/X695MICROCOMPUTERS TERMINAL DESCRIPTION System -COM : IC201 (X34- : ELECTRIC UNIT)Pin No. Pin Name I/O ApplicationTruth Value TableProcessing / Operation / Description1,2 NC - Not used3 AVSS - Reference GND for A/D converterConnects to GND even when A/D converter is not used4 VREFH - Reference power supply for A/D converterConnects to +B even when A/D converter is not used5 RESET I Reset input6 MODE I Mode Connects to GND7 IPOD SDA I/O I2C data input/output for iPod authentication IC8 IPOD SCL O I2C clock output for iPod authentication IC9 IPOD RST O Reset signal for iPod authentication IC10 ROTARY CW I VOL encoder input Pulse width detection11 VFD DATA I/O VFD data input/output VFD data input/output12 VFD PAN DATA I VFD data input VFD data input13 VFD CLK O VFD clock output 125kHz14 ROTARY CCW I VOL encoder input Pulse width detection15 DVSS - GND16 VFD RST O VFD driver reset outputH: Reset cancelled, L: ResetMomentary power down or panel detached or 11 minutes after ACC OFF: L17 VFD CE O VFD control request18 PON SW3 I/O SW3.3V control ON: L, OFF: Hi-Z19 BSIF LRCK O BS LRCK output20 BSIF BCK O BS BCK output21 BSIF DATA O BS DATA output22 BSIF GATE O Data transfer starting signal23 BSIF ST REQ I Data input request signal24 MIC SW O BT microphone switching (KDC-BT648U) L: Panel microphone, H: Rear microphone25 PON PANEL3 I/O PAN3.3V controlON: L, Momentary power down or panel de-tached or 11 minutes after ACC OFF: Hi-Z26 NC - Not used Output L fi xed27 PANEL DET I Panel connection detection H: No panel, L: Panel attached28 NC - Not used Output L fi xed29 CD BREAK O CD motor brake q Refer to the truth value table30 CD LOEJ O CD motor control q Refer to the truth value table31 CD PON I/O CD mechanism power supply control output H: Power supply ON, Hi-Z: Power supply OFF32 CD LOE LIM SW I CD detection (Chucking SW) H: Loading completed, L: No disc33 CD SRAM STBY O Decoder SRAM standby control L: SRAM standby34 CD REQ I Communication request from mechanism DSP H: Data request35 CD LOS SW I CD loading detection36 CD SO O Serial interface transmission37 CD SI I Serial interface reception38 CD CLK O Serial interface clock output 1MHz39 BEEP O Beep output 2kHz/1kHz40 CD DISC12 SW I 12cm disc detection7KDC-348U/4751SD/BT41U/BT648U/U4549/U4549SD/U549BT/X395/X695Pin No. Pin Name I/O ApplicationTruth Value TableProcessing / Operation / Description41 ZDET IN I 0-bit mute request H: Mute request, L: Normal play42 CD RST O CD mechanism reset H: Normal, L: Reset43 CD CCE O CD mechanism chip enable44 CD DRIVE MUTE O CD motor driver mute output45 CD MOTOR O CD motor switching control q Refer to the truth value table46 NC - Not used Output L fi xed47 DVCC3 - Power supply48 DVSS - GND49,50 NC - Not used Output L fi xed51 SD CD I SD card insert detection L: SD found52 SD PWR I/O SD block power supply control L: POWER ON, Hi-Z: POWER OFF53 BT RST O BT module reset L: BT reset, H: Normal53 SD CS O CS output to SD5456 NC - Not used Output L fi xed57 PS1-1 O Power supply IC control w Refer to the truth value table58 PS1-2 O Power supply IC control w Refer to the truth value table59 PS1-3 O Power supply IC control w Refer to the truth value table60 PS2-1 O Power supply IC control w Refer to the truth value table61 NC - Not used Output L fi xed62 FSEL1 O SW-REG frequency switching63 NC - SW-REG frequency switching Output L fi xed64 PON SW-REG O SW-REG ON/OFF L: OFF, H: ON65 BT SYS DATA O Data output to BT65 SD DO O Data output to SD66 BT BT DATA I Data input from BT66 SD DI I Data input from SD67 SD CLK O Clock output to SD6870 NC - Not used Output L fi xed71 ILLUMI DET I Dimmer illumination detection L: ON, H: OFF72 BU DET I Momentary power-down detectionBU found: L, No BU or momentary power down: H (Operates less than 4ms after momentary power down)73 ACC DET I ACC detection ACC found: L, No ACC: H74 NC - Not used Output L fi xed75 PON 4V-PRE I/O 4V-PRE power supply control (eXcelon model) H: ON, Hi-Z: OFF76 SA RST O Reset output for spectrum analyzer H: Reset cancelled, L: Reset77 SA CLK O Clock output for spectrum analyzer78 MUTE 0 O Front direct muteL: Mute ON (Time constant solo setting: 10ms), H: Normal79 MUTE 1 O Rear direct muteL: Mute ON (Time constant solo setting: 10ms), H: Normal80 MUTE 2 O Other direct muteL: Mute ON (Time constant solo setting: 10ms), H: Normal (Countermeasure against IC2 shock noise)MICROCOMPUTERS TERMINAL DESCRIPTION8KDC-348U/4751SD/BT41U/BT648U/U4549/U4549SD/U549BT/X395/X695Pin No. Pin Name I/O ApplicationTruth Value TableProcessing / Operation / Description81 MUTE AFS I/O AFS muteL: Mute ON (Time constant solo setting: 0.5ms), Hi-Z: Normal82 PWIC MUTE O Power IC muteSTANDBY source or momentary power down: L, TEL mute: L83 PWIC STBY O Power IC standby control POWER ON: H, POWER OFF: L 84 PWIC DC ERR IDetection of power ICs +B and GND short-circuited85 LX DATA M O Data to slave unit SIO mode transmission86 LX DATA S I Data from slave unit SIO mode reception87 LX CLK I/O LX-BUS clock SIO mode clock (125kHz or 107kHz)88 NC - Not used Output L fi xed89 DVCC3 - Power supply90 DVSS - GND91 SW DIO - For on-board writing92 SW CLK - For on-board writing93 TRACE CLK - For debug94 TRACE DATA 0 - For debug95 TRACE DATA 1 - For debug96 TRACE DATA 2 - For debug97 TRACE DATA 3 - For debug98 AUD SDA I/O I2C data input/output (E-VOL IC control)Communication with E2PROM for system -COM data keeping99 AUD SCL O I2C clock input/output (E-VOL IC control)Communication with E2PROM for system -COM data keeping100 LX RST O Forced reset to slave unit H: Reset, L: Normal101 LX MUTE I Mute request from slave unit H: Mute ON, L: Mute OFF 102 LX REQ M O Communication request to slave unit103 LX CON O Start-up request to slave unit H: Slave unit ON, L: Slave unit OFF104 USB PON O USB P.ON output H: ON, L: OFF105 USB OC I USB over-current detection L: Detected, H: Normal106 NC - Not used Output L fi xed107 MUTE PRE O External preout mute O-bit or momentary power down: L, L: Mute ON108 MUTE PRE SW O External preout mute (SUB) O-bit or momentary power down: L, L: Mute ON109 LX REQ S I Communication request from slave unit For external interrupt110 TUN SDA I/O I2C data input/output (Tuner IC control)111 TUN SCL O I2C clock output (Tuner IC control) I2C clock frequency: 200kHz112 REMO IInput signal of remote control reception and wired remote controlPulse width detection113 REMO I Remote control signal inputEven pin No.112 is being short-circuited, input signal can be ignored in software114 REG VCC3 - Power supply115 XT1 I Low frequency resonator connection Sub clock: 32.768kHz116 XT2 O Low frequency resonator connection Sub clock: 32.768kHz117 CVCC3 - Power supply118 X1 I High frequency resonator connection Main clock: 12MHz119 CVSS - GNDMICROCOMPUTERS TERMINAL DESCRIPTION9KDC-348U/4751SD/BT41U/BT648U/U4549/U4549SD/U549BT/X395/X695Pin No. Pin Name I/O ApplicationTruth Value TableProcessing / Operation / Description120 X2 O High frequency resonator connection Main clock: 12MHz121 DVCC3 - Power supply122 DVSS/REGVSS - GND123 USB D+ I/O USB data connection124 USB D- I/O USB data connection125 NM IN I Non-maskabe interrupt126 TEST1 - For test Output L fi xed127 TEST2 - For test Output L fi xed128,129 NC - Not used Output L fi xed130 AVCC3 - Power supply131 SA IN I Input data for spectrum analyzer132 AUD DC ERR I DC offset detection133 NC - Not used134 LINE MUTE I Line mute detectionTEL mute: Below 1V (Model without BT func-tion), NAVI mute: Over 2.5V135138 NC - Not used139 TYPE 1 I Destination switching140 TYPE 2 I Destination switching141,142 NC - Not used143 SERIAL DET I For serial number writing144 NC - Not usedTruth value tableq CD motor controlCD MOTOR (Pin 45) CD LOEJ (Pin 30) CD BRAKE (Pin 29)Standby L L LEject H H LLoad H L LBrake H H/L Hw Power supply IC control SEL1 (Pin No.10 of IC1)PS1-2 (Pin 58) PS1-3 (Pin 59) PS2-1 (Pin 60) ILLUMI P-CON P-ANTL L L OFF OFF OFFL L H ON OFF OFFH L H ON ON OFFH H H ON ON ONw Power supply IC control SEL1 (Pin No.11 of IC1)PS1-1 (Pin 57) AUDIO/SW5/AML OFFHONMICROCOMPUTERS TERMINAL DESCRIPTION10KDC-348U/4751SD/BT41U/BT648U/U4549/U4549SD/U549BT/X395/X6951. PanelACCENTSEARCHRETURN VOL2. How to enter each Test ModeTest Mode name OperationProduction Test Mode Press and hold 1 key and 3 key and reset.Service Test ModeIn the STANDBY source, while pressing and holding 2 key, press 6 key for 7 seconds.(Starting to press 2 key and 6 key at the same time can not be entered into the mode)Service informati