Kenwood-KD-CW-427-Y-Service-Manual电路原理图.pdf

© 2003-12 PRINTED IN JAPANB53-0113-00 (N)2704CD RECEIVERKDC-MP225KDC-MP4026/GKDC-W4527/G/GY/YKDC-W427YSERVICE MANUAL* Escutcheon(B07-3001-02)(B07-3098-02)Plastic cabinet assy(A02-1486-13)Mounting hardware assy(J21-9716-03)* DC cord(E30-6132-05)(E30-6286-05)* Antenna adaptor(T90-0523-05)* Screw(N84-4016-46)Lever(D10-4589-04) x 2* Screw set(N99-1719-05)CD mechanism extension cord (24PIN) : W05-0934-00AUTODISP MENUSCANAUDRDM REPOFFLOUDC.S.Front glass KDC-MP225 (B10-4464-01)Panel assy KDC-MP225 (A64-3170-02)AMEM.RDM+-F.SELSCRLAUTODISP MENUSCANAUDRDM REPOFFLOUDFront glass KDC-MP4026 (B10-4468-01)KDC-MP4026G(B10-4469-01)Panel assy KDC-MP4026 (A64-3174-02)KDC-MP4026G(A64-3175-02)AMEM.RDM+-F.SELSCRLAUTODISP MENUSCANAUDRDM REPOFFLOUDFront glass KDC-W427 (B10-4555-01)Panel assy KDC-W427 (A64-3336-02)AMEF.SELSCRLADJDISP MENUSCANAUDRDM REPOFFLOUDFront glass KDC-W4527/Y (B10-4466-01)KDC-W4527G/GY(B10-4467-01)Panel assy KDC-W4527/Y (A64-3172-02)KDC-W4527G/GY(A64-3173-02)TIM.RDM+-F.SELSCRL PTY* DC cord(E30-6322-05)(E30-6323-05)* Remote controller assy(A70-2040-05) : RC-505* Not supplied * Depends on model. Refer to the parts list.TDF PANEL INFORMATIONMODEL PARTS NO. PANEL NAMEKDC-MP225 Y33-1940-60 TDF-42DKDC-MP4026 Y33-1940-67 TDF-MP4026KDC-MP4026G Y33-1940-63 TDF-MP4026GKDC-W4527/Y Y33-1940-64 TDF-W4527KDC-W4527G/GY Y33-1940-65 TDF-W4527GKDC-W427Y Y33-1940-66 TDF-W427YVOL2KDC-MP225,MP4026/GKDC-W4527/G/GY/Y,W427YBLOCK DIAGRAMS7VA8VBU5VD5VA3.3VSW3.3VBU3.3VBU2.5VCD PLAYER UNIT (X32-5500-00)IC1MECHANISMCONTROLQ8APCQ9,10C-SWIC44ch BTLDRIVERMMDM1DM2SPINDLEMOTORLOADINGMOTOR& SLEDS1S2IC9DAC 3.3VAVRQ3,5,6S3S4(0-01)ONLYLEVEL SHIFTQ7Q1,4LEVELSHIFTMICROPROCESSORAVRBU 3.3VIC6DAC 3.3VAVRIC7SW 3.3VAVRIC5LEVELSHIFTIC3MP3/WMADECODERIC2PROCESSORRF AMP/SERVOCD SIGNALBUFFERIC8FO COILTR COIL(OPTICAL PICKUP)ACFBEDPU1LDPDCN2CN115DGNDDATACLKMUTERMUTELMSTOPMRST10LOS2018EJEA8VLAGNDDOUTRMOTORLO/EJ5SGNDS7V12EJELOE/LIMX216.00MHz16.898MHzX1OPEND5DGNDD524BU5338124444VREFSLDTRKFCSSPD516PON3KDC-MP225,MP4026/GKDC-W4527/G/GY/Y,W427Y1200mVDXM-6060DXM-6560DXM-6540 : 810mV: 1200mV: 1200mV1Vpp75Ter m.SWITCH UNIT (X16- )TUNERCD/VCDCHBUFFERRDSDECODERBUFFEREEPROMREMOCONRESET SWWITHLCD DRIVERKEY MATRIXLCDDSISYSTEMMPXE-VOL&ACC DETTEL MUTEB.U DETPRE MUTEDRIVERMUTEPOWERICTHERMALPROTECTACCTEL MUTEBACK UP(REAR)PRE OUTSP OUTSURGE DETSERVOSERVO+B SW 14VWIRED REMOSUPPLYICPOWER ANT CONP CONRESETSW 5VPANEL 5VSW5VILL SWILLUMIIC7IC2IC1IC4IC3IC8IC1IC2SWANALOGAUX INAUDIOPARK SW PARK SWMICROPROCESSORMECHA+B MECHA +BICVIDEO OUTIC9IC6to VIDEO OUTTUN SMETERAUDIO OUTTUN IFC OUTTUN SCLTUN SDASW5VAM+BA8VCD DISC8 SWCD DISC12 SWCD LOS SWCD SDACD SCLCD LOE LIM SWCD MUTE LCD LOEJCD MSTOPCD MRSTSERVO+BA8VBU5VMECHA+BLX DATA SLX MUTELX RSTLX REQ MLX REQ SLX CLKLX COMLX DATA MBACK UPRDS QUALS-METERRDS DATARDS CLKFMAMMPLEVELCDQUALAFSCHSW5VSW5VBU5VDSI L CLKL DATASL CE L DATALREMOMUTEPWIC MUTELINE MUTEACC DEB.U DETPWIC BEEPRSTBU5VA8VSW5VAM+BILLUMIA8VBU5VBU5VMODEFMAMMP3E-TYPE1372mV855mV3600mVK-TYPE1800mV600mV3600mVPWIC STBYBU5VTDF DETSW5VAUD SCLAUD SDAA8VPON 5PARK SWMUTE PREPS2-1 PS1-0PS2-0 PS1-2 PS1-1PON CDA8VCD MOTORCD MUTE RVIDEO OUTAUX SWRDS AFSRDS NOISESW5VSW5VL RST KEY REQBU5VBLOCK DIAGRAMELECTRIC UNIT (X25-)4KDC-MP225,MP4026/GKDC-W4527/G/GY/Y,W427Y SWITCH UNIT (X16-2640-xx/2642-xx/2652-xx)Ref. No. Application / Function Operation / Condition / CompatibilityIC1 LCD driver Drive for LCD unitIC2 Remote control IC Receiving for the remote control unitQ1 KEY scan detector key scan start at base gose “L”.Q2 key illumination SW Lights up for RED key illumination when base voltage level goes “H”Q3 key illumination SW Lights up for GREEN key illumination when base voltage level goes “H” ELECTRIC UNIT (X25-9980-xx/9982-xx/X34-3172-70)Ref. No. Application / Function Operation / Condition / CompatibilityIC1 System microcomputer Control for TUNER unit, CD mechanism, volume & tone, LCD driver and external CD changer unitIC2 Electronic volume & N.C.MPX Control for source selector, volume & tone, and FM multiplex detector.Power supply for the units (Bu5V, Audio8V, FM+B, AM+B, P-con and ANT-con)IC3 Power supply ICIC4 Audio power amp IC Amplifier for audio signal to derive for 4channel speakers (50W maximum for each channel)IC6 Muting control IC Control for timing for muteIC7 RDS decoder Decode for RDS signalIC8 Reset IC When detection voltage goes below 3.5V or less Reset IC output change to “L” signalIC9 Switching regulator Power supply for CD mecanism unitQ1 Serge detectionWhen backup voltage become more than 24V output is “L” (momentary power down) /When backup voltage become less than 24V output is “H”Q2 Backup detectionWhen BU voltage supplied output is “L” /When BU voltage not supplied or momentary power down is detected output is “H”Q3 ACC detection When ACC voltage supplied output is “L”Q4 SW 5V When base voltage is “L” Q4 is ONQ21,24 AVR Servo regulatorQ22 SW Servo SWQ23 IC control Power supply IC controllerQ41 SW Switching regulator control SWQ101 Buffer amp Composite signal bufferQ151 DSI driverWhen base voltage level is “L” DSI LED is light up / When base voltage level is “H” DSI LEDturns off / When panel assy is pull off, cut off the supply to panel 5V AVR.Q201 Buffer amp Noise buffer ampCOMPONENTS DESCRIPTIONSW1 OUT1.53.0V Audio ON3.55.0V Audio P-con ON7.0V Audio P-con, P-ant ONSW2 OUT2.03.0V Illumination, FM ON4.0V Illumination, AM ON5KDC-MP225,MP4026/GKDC-W4527/G/GY/Y,W427YRef. No. Application / Function Operation / Condition / CompatibilityQ252 For surge measure of audio power IC When base voltage to “L”, for control to power IC function (STAND BY)Q350 Pre & NF mute SW When base voltage to “L”, drive to pre & NF mute SW (Q351)Q351 Pre mute SW When base voltage to “H”, muting to the pre Lch or NF Lch lineQ352 Pre mute SW When base voltage to “H”, muting to the pre Rch or NF Rch lineQ401 DSI illumination SW When base voltage to “H”, DSI illumination is light up. CD PLAYER UNIT (X32-5500-00)Ref. No. Application / Function Operation / Condition / CompatibilityGeneration of RF signal based on the signals from the APC circuit and pickup, and generationIC1 RF amplifier adapted for CD-RW of servo error (focusing error and tracking error) signals. Detection of dropout, anti-shock,track crossing and off-track conditions, included gain control function during CD-RW.Focusing, tracking, sled and spindle servo processing. Automatic adjustment (focusing,IC2 CD signal processor built-in MI-COM tracking, gain, offset and balance) operations. Digital signal processing (DSP, PLL, sub-codes,CIRC error correction, audio data Interpol ration) operations, and Microcomputer function.IC3 MP3/WMA decoderIC4 4CH BTL driver Focusing coil, tracking coil, spindle motor and sled motor driver, disc loading and eject operation.IC5 AVR For SW3.3V AVRIC6 AVR For BU3.3V AVRIC7 AVR For BU2.5V AVRIC8 Selector Serial audio signal selector ICIC9 AVR For IC2 (DAC section) 3.3V AVRQ1,37 Level shift 3.3V 5.0VQ8 APC LD power controlQ9,10 SW Delay to sub beam line (antecedence beam)D2 Protection diode IC2 protection (for reset line)D3 Protection diode Laser diode protectionCOMPONENTS DESCRIPTION6KDC-MP225,MP4026/GKDC-W4527/G/GY/Y,W427YMICROCOMPUTERS TERMINAL DESCRIPTION SYSTEM MICROPROCESSOR : 784225GC231A (X25 : IC1)Pin No. Pin Name I/O Description / Processing Operation1 TUN SMETER I S meter detection input terminal2 RDS NOISE I FM noise detection input terminal3 LINE MUTE I Phone Muting signal input terminal (More than 2.5V : NAVI mute, Less than 1.0V : TEL mute)4AVSS - GND5L RST O Reset signal output (for LCD driver) H : Light on display, key scan, L : Light out on display, key reset6L CE O CE output for LCD driver IC7AVREF1 - BU5.0V8L DATAL I DATA input terminal from LCD derive IC9L DATAS O DATA output terminal to LCD driver IC10 L CLK O CLK output terminal to LCD driver IC11 TDF DET I Panel assy detect terminal H : Panel assy come off12 AUX ON O Select for AUX input signal H : AUX, L : Other13 RDS QUAL I RDS decoder QUAL signal input terminal14 RDS DATA I RDS decoder Data signal input terminal15 PWIC BEEP O Beep audio signal output terminal16 LX DATA S I DATA signal input from EXT. unit17 LX DATA M O DATA signal output to EXT. unit18 LX CLK I/O CLK signal input/output to EXT. unit19 TUN SCL O I2C CLK signal output terminal (for front-end)20 TUN SDA I/O I2C DATA signal input/output terminal (for front-end)21 TUN IFC OUT I IFC signal input terminal H : Station detect, L : No detect22 RDS AFS O Time constant select terminal (for noise detect) H : Receiving, L : FM seek, AF search23 CD SDA I/O I2C DATA output terminal (for CD mechanism, electric VR)24 AUD SDA O CLK output terminal (for CD mechanism, electric VR)25 NC - NC26 LX RST O Reset signal output to EXT. unit27 LX CON O Control signal output to EXT. unit H: ON L: OFF28 LX MUTE I Request signal input terminal from EXT. unit L : Mute ON29 LX REQ M O DATA signal output to EXT. unit30 PWIC SVR O SVR control for Audio power IC31 PWIC STBY O STBY control for Audio power IC H : Power IC ON32 PWIC MUTE O Muting control for Audio power IC33 VSS1 - GND34 ACC DET I ACC detection input terminal L : ACC detect35 RESET2 O Reset output terminal L : Active36 MUTE O Muting signal output terminal37 BU DET I BU detect input terminal L : BU detect38 PARK SW I Packing condition detect terminal H : OFF, L : ON (PARKING)39 PS2 1 O Power supply IC control terminal7KDC-MP225,MP4026/GKDC-W4527/G/GY/Y,W427YMICROCOMPUTERS TERMINAL DESCRIPTIONPin No. Pin Name I/O Description / Processing Operation40 PS2 0 O Power supply IC control terminal41 PS1 0 O Power supply IC control terminal42 PS1 1 O Power supply IC control terminal43 PS1 2 O Power supply IC control terminal44 PON 5 O SW5V/SW14V control output terminal Hi-Z : OFF, L : ON45 NC - NC46 PON CD O MP3 power supply control terminal47 CD DISC12 SW I 12cm CD disc eject SW detection input terminal L : 12cm disc48 CD MUTE R I Request for muting signal from CD mechanism L : Mute request49 NC - NC50 CE MRST O Reset signal output to CD mechanism L : Active51 CD DISC8 SW I 8cm CD disc eject SW detection input terminal (Not used)52 CD LOS SW I Loading start SW detection input terminal L : Loading start53 CD MUTE L I Request for muting signal from CD mechanism L : Mute request54 NC - NC55 CD MSTOP O Request signal (Mechanism is STOP) output to CD mechanism L : Active56 CD LOE LIM SW I Down SW detection from CD mechanism57 CD LOEJ I/O CD mechanism loading / eject control terminal H : Eject, L : Loading58 CD MOTOR O CD mechanism motor loading control terminal H : Loading, Eject, Brake, L : Play59 DSI O Disc guide illumination control terminal H : DSI ON60 RESET I Reset input terminal L : Active61 NC - NC62 KEY REQ I Request for communication to slave unit L : Key input mode63 RDS CLK I RDS decoder CLK input terminal64 LX REQ S I DATA signal input from EXT. unit65 REMO I Remote control signal input terminal66 NC - NC67 VSS0 - GND68 VDD1 - BU5.0V69 X2 - Main clock input terminal (10MHz)70 X1 - Main clock input terminal (10MHz)71 TEST - GND72 XT2 - Sub clock input terminal (32.768kHz)73 XT1 - Sub clock input terminal (32.768kHz)74 VDD0 - BU5.0V75 AVDD - BU5.0V7678 TYPE02 I Destination input terminal DXM6540 (SEL0 : Lo, SEL1 : Lo)79,80 TUN TYPE0,1 I Electric volume condition setting terminal8KDC-MP225,MP4026/GKDC-W4527/G/GY/Y,W427YMICROCOMPUTERS TERMINAL DESCRIPTION CD SIGNAL MICROPROCESSOR : UPD63712GC (X32 : IC2)Pin No. Pin Name I/O Description / Processing Operation1 VREFL I Reference voltage input terminal2AVSS - GND for ADC3AVCC - Power supply for ADC (BU3.3V)4NCONC (OPEN)5 20RST O Reset control output terminal (for decoder) L : RESET, H : NORMAL6 20ACK I Acknowledge signal input terminal (for decoder)7 20STBY O Standby control (for decoder) H : STAND BY, L : NORMAL8,9 NC O NC (OPEN)10 20INT I Interrupt signal input terminal (for decoder)11 FOGUP I Interrupt for focus gain up control signal H : Focus gain UP, L : NORMAL12 LZM I 0 bit muting detect (Lch) L : MUTE OFF, H : MUTE ON13 RZM I 0 bit muting detect (Rch) L : MUTE OFF, H : MUTE ON14,15 NC O NC16 20CS O Chip select signal output terminal (for decoder)17 20LP O Latch pules signal output terminal (for decoder)18 20TXD0 I/O Serial data signal output terminal (for decoder)19 20RXD0 I Serial data signal input terminal (for decoder)20 20SCLK0 O Serial data clock output terminal (for decoder)21 DSPTXD1 O Serial data signal output terminal (for DSP)22 DSPRXD1 I Serial data signal input terminal (for DSP)23 DSPSCLK1 O Serial data clock output terminal (for DSP)24 AM0 I Select for ROM mode H : NORMAL, L : External ROM mode25 DVCC - BU3.3V26 X2 O Oscillator (16MHz)27 DVSS - GND28 X1 I Oscillator (16MHz)29 AM1 I BU3.3V30 RESET I Reset terminal L : RESET, H : NORMAL31,32 NC O NC33,34 EMU0,1 O NC35 DSPSTB O Data strobe signal output terminal36 DSPA0 O Command, parameter select signal H : Parameter, L : Command37 DSPRST O Reset control output terminal (for DSP)38 DSPINT I Interrupt signal input terminal (for DSP) H : Interrupt39 /DAC RESET O Reset signal output terminal (for DSP) L : RESET, H : NORMAL40 SEARCH O Search condition output terminal H : Search, L : NORMAL41 LOE/LIM_SW I SLT SW detect input terminal H : Inside4245 NC O NC (OPEN)46 PONE5 O +5V AVR control terminal (for VIDEO) H : Power ON47 PONE2.5 O +2.5V AVR control terminal (for VIDEO) H : Power ON9KDC-MP225,MP4026/GKDC-W4527/G/GY/Y,W427YPin No. Pin Name I/O Description / Processing Operation48,49 NC O NC (OPEN)50 FLAGIN I C2 error detect terminal L : Correction OK, H : Correction NG51-60 NC O NC (OPEN)61 /DAC PD O Reset control output terminal (for DAC) L : RESET, H : NORMAL62 DVSS - GND63 NMI I Request for non maskable interrupt signal input terminal64 DVCC - +VCC65 DAC MUTE O Muting control output terminal (for DAC) H : MUTE, L : MUTE OFF66 DAC PON O Audio power supply (for DXM-6550) H : POWER ON67 PONA5 O +5V Audio power supply (for DXM-6550) H : POWER ON68 ESRST O Reset signal output terminal (for ES3890) L : RESET, H : NORMAL69 VMUTE O Video mute control terminal H : MUTE ON, L : MUTE OFF70 NC O NC (OPEN)71 SELINT O Video/Audio select output terminal H : NORMAL, L : Interrupt72 ASEL0 O Audio signal output select control terminal 1 00 : STEREO, 01 : Lch73 ASEL1 O Audio signal output select control terminal 1 10 : Rch, 11 : Not function74 NT/PAL O NTSC/PAL select terminal L : NTSC, H : PAL75 DATASEL O 20F/ES3890 output select H : 20F, L : ES389076,77 NC O NC (OPEN)78 NC (BOOT) I Flash memory writing terminal L : Writing, H : NORMAL79,80 NC O NC (OPEN)81 POND3.3 O D3.3V power ON control terminal H : POWER ON82 MUTEL O Audio muting control terminal (Lch)83 MUTER O Audio muting control terminal (Rch)84 SDA I/O I2C data (for system microprocessor)85 SCL I/O I2C clock (for system microprocessor)86 MSTOP I Interrupt signal for stand-by mode L : STOP, H : STOP cancellation87 NC O NC88 DMUTE O Driver muting control L : MUTE ON, H : MUTE OFF89 DVCC - +VCC90 NC O NC (OPEN)9