Kenwood-RXDV-252-Service-Manual电路原理图.pdf

MINI HiFi COMPONENT SYSTEMRXD-V252/V252-HSERVICE MANUAL©2001-10 PRINTED IN KOREAB51-5759-00 (K/K) 404 *Refer to parts list on page 27. In compliance with Federal Regulations, following are repro-duction of labels on, or inside the product relating to laserproduct safety.KENWOOD-Corp. certifies this equipment conforms to DHHSRegulations No.21 CFR1040. 10, Chapter 1, subchapter J.DANGER : Laser radiation when open and interlock defeated. AVOID DIRECT EXPOSURE TO BEAM.*Refer to page 2 if you want to know system configuration.(XD-V252)*70%Dress ring (A21-3966-08)FRT cab ass'y *(A60-)FL panel *(B10-)Panel(VCD)(A60-2220-08)Knob(VOLUME)(K29-8047-08)Cassette lid(R)(A21-3959-08)Phone jack (E11-0942-08)Cassette lid(L) (A21-3958-08) Jack(MIC) (E11-0953-08)RXD-V252/V252-H2CONTENTS / ACCESSORIES / CAUTIONSCONTENTS / ACCESSORIES / CAUTIONS.2EXTERNAL VIEW.3CIRCUIT DESCRIPTION.4ADJUSTMENT.7WIRING DIAGRAM.8PC BOARD.9SCHEMATIC DIAGRAM.15EXPLODED VIEW.25PARTS LIST.27SPECIFICATIONS.Back coverContentsAC Plug Adaptor (1)(E03-0115-05) Use to adapt the plug on thepower cord to the shape of thewall outlet.(Accessory only for regions whereuse is necessary.) AM Loop Antenna(1)(T90-0879-08)“AA“ size battery(2)(UM/SUM-3, R6, HP-7 or similar) Remote Control(1)(A70-1574-08)FM Antenna(1)(T90-0883-08)Video Cable(1)(E30-7255-08)The marking of products using lasers(Except for some areas)The marking is located on the rear panel andsays this product has been classified as Class1. It means that there is no danger of hazard-ous radiation outside the productCLASS 1LASER PRODUCTAccessoriesModelColorM(General Market)I(Malaysia)RXD-V252Blue-IRXD-V252-HGrayMI2System ConfigurationsCautions AttentionPlease contact our KENWOOD Service Department in your side if you want the service information; Circuit Description. FullDescribed Parts list and so. Information is available to you by internet from us.RESETTING THE MICROCOMPUTERReset the microcomputer under the following con-ditions :Toerase all of the stored memory contents (clockand timer settings, and tuner and CD presets).If the display is not correct.If the operation is not correct.1Press the ON/STANDBY button to enterthe standby mode.2Whilst pressing down the 7STOP button andthe SOUND MODE button, hold down theON/STANDBY button for at least 1 second.“CLEAR AL” will appear.Caution :The operation explained above will erase all datastored in memory including clock and timer set-tings, and tuner and CD presets.TRANSPORTING THE UNITBefore you move this product to a new location,proceed as follows :1Press the ON/STANDBY button to turn thepower on.2Press the CD button.3Press the 0 OPEN/CLOSE button to open thedisc tray.Remove all CDs inserted in the unit.4Press the 0 OPEN/CLOSE button to close thedisc tray.Make sure that “NO DISC” is displayed.5Press the ON/STANDBY button to enterthe standby mode and then unplug the AC powercord from the AC socket.SOUNDMODEON/STANDBY7 STOPON/STANDBYCD0OPEN/CLOSERXD-V252/V252-H3EXTERNAL VIEW*Refer to parts list on page 27. ANTENNAAM LOOPFM75VIDEO/AUXVIDEOOUTSPAN SELECTOR230V240VFM 50kHz AM 9kHz FM 100kHz AM 10kHz +-LSPEAKERSRATED SPEAKER IMPEDANCE:6 OHMS MIN.RLRCabinet(TOP) (A02-3014-08)AC power cord (E30-2881-08)RCA socket(E02-0021-08)Lock terminal board(E70-0151-08) FM Antenna (E70-0145-08)Slide switch(S62-0086-08)RCA socket(E63-1219-08)AC power cord bushing (J42-0338-08)RXD-V252/V252-H4CIRCUIT DESCRIPTIONBlock Diagram for MPEG1 Video/Audio Processing RAS#ProcessorLA(17:0)DRAM InterfaceDA(8:0)InterfaceLD(7:0)HuffmanDBUS(15:1)LCS3#, LCS#(1:0)RISCDecoderDOU#DRAMLWR#Processor2Kx32 ROMDWE#LOE#2x32 SRAMCAS#ACLKAUX(7:1)AUXSerialATCLKMPEGAudioAINSerial AudioProcessorInterfaceAOUTInterfaceARFS64x32 ROMYUV(7:0)ATFS32x32 SRAMPCLK2XScreenARCLKRegistersVideo OutputPCLK VSYNCHSYNCTDMSEL-PLL(1:0)TDMInterfaceTDMCLKInterfaceOn ScreenTDMDRDisplayCPUCLKMiscTDMFSDRAM DMARESET#ControllerPort No.Port NameI/OFunction1,31,51VCC3-Supply voltage for 3.3V.2RAS#ODRAM row address strobe (active low).3DWE#ODRAM write enable (active low).412MA(08)ODRAM multiplexed row and column address bus.1328DBUS(015)I/ODRAM data bus.29RESET#ISystem reset (active low).30,50,80,100GND-Ground.3239YUV(07)OY is luminance, UV are chrominance data bus for screen video interface.YUV(07) for 8 bit YUV mode.40VSYNCI/OVertical sync for screen video interface, programmable for rising orfalling edge.41HSYNCI/OHorizontal sync for screen video interface, programmable for rising orfalling edge.42CPUCLKIRISC and system clock input.43PCLK2XI/OPixel clock: two times the actual pixel clock for screen video interface.44PCLK I/OPixel clock qualifier in for screen video interface.4549,52,53,54AUX(07)I/OAuxiliary control pins (AUX0 and AUX1are open collectors).5562LD(07)I/ORISC interface data bus.63LWR#OUnused.64LOE#ORISC interface output enable (active low).65,66,67LCS(3,1,0)#ORISC interface chip select (active low).6879,8287LA(017)ORISC interface address bus.81VCC-Digital supply voltage for 5.0V.88ACLKI/OMaster clock for external audio DAC(8.192MHz, 11.2896MHz, 12.288MHz,16.9344MHz, and 18.432MHz).ODual-purpose pin. AOUT is the audio interface serial data output.Pins SEL -PLL(1: 0) select phase-lock loop(PLL) clock frequency 89AOUT/SEL/PLL0ICPUCLK for the Visba : 00 = bypass PLL 01 = 54MHz PLL10 = 67.5MHz PLL 11 = 81MHz PLL90ATCLKI/OAudio transmit bit clock.ODual-purpose pin. ATFS is the audio interface transmit frame sync.91ATFS/SEL/PLL1IPins SEL -PLL(1: 0) select phase-lock loop(PLL) clock frequency CPUCLKfor the Visba. See the SEL -PLL0 pin above for the settings.92DOEODual-purpose pin. DRAM output enable (active low)/DRAM multiplexedrow and column address bus.93AINIAudio interface serial data input.94ARCLKIAudio receive bit clock.95ARFSIAudio interface receive frame sync.96TDMCLKITDM interface serial clock.97TDMDRITDM interface serial data receive.98TDMFSITDM interface frame sync.99CAS#ODRAM column address strobe bank 0 (active low).Port Function of MPEG1 Video/Audio Processing : ES3880 (ICM2)RXD-V252/V252-H5CIRCUIT DESCRIPTIONPort No.Port NameI/OFunction1,25,26,31,7275,77,91,100VSSIGround.5,16,32,6673, 78,90VCCISupply voltage for 5.0v.6DSC CIClock for programming to access internal registers.7AUX0I/OUnused.9AUX1I/OServo reverse or control pin.11AUX2I/OServo LD ON or control pin.70AUX3I/OUnused.69AUX4I/OServo CCW/Close or control pin.68AUX5I/OUnused.67AUX6I/OServo XLAT or control pin/VFD DO.14AUX7I/OServo BRKM/Sense or control pin/VFD DI.18AUX8I/OServo Mute/Open or control pin/VFD CLK.20AUX9I/OServo SQS0 or control pin.34AUX10I/OUnused.35AUX11I/OUnused.36AUX12I/OUnused.38AUX13I/OSerial interrupt/CD Mute or control pin.39AUX14I/OUnused.40AUX15I/OUnused.8,81,83,8593,95,97,99DSC D(70)I/OData for programming to access internal registers.10DSC SIStrobe for programming to access internal registers.12DCLKODual purpose pin. DCLK is the MPEG decoder clock.EXT CLKIEXT CLK is the external clock EXT CLK is an input during bypass PLL mode.13RESET BIVideo reset (active low).15MUTEOAudio mute.17MCLKIAudio master clock.19TWSIDual purpose pin. TWS is the transmit audio frame sync.SPLL OUTOSPLL OUT is the select PLL output.21TSDITransmit audio data input.22TBCKITransmit audio bit clock.ODual purpose pin. RWS is the receive audio frame sync.Pins SEL PLL (1,0) select the PLL clock frequency for the DCLK output.23RWSSEL PLL1 SEL PLL0 DCLKSEL PLL1I00 Bypass PLL (input mode)0 1 27MHz (output mode)1 0 32.4MHz (output mode)1 1 40.5MHz (output mode)24RSTOUT BOReset output (active low).24,273076NC-Unused.RSDODual purpose pin. RSD is the receive audio data input.33SEL PLL0ISEL PLL0 along with SEL PLL1 select the PLL clock frequency for the DCLK output.37RBCKODual purpose pin. RBCK is the receive audio bit clock.SER INISER IN is the serial input DSC mode.41,51AGNDIAudio analog ground.42VCMIADC common mode reference (CMR) buffer output.43VREFPIDAC and ADC maximum reference.44VCCAAIAnalog VCC(5V).45,46AOR+, AOR-ORight channel output.47,48AOL-, AOL+OLeft channel output.49MIC1IMicrophone input 1.50MIC2IMicrophone input 2.Port Function of DAC & TV Encoder : ES3889 (ICM3)RXD-V252/V252-H6CIRCUIT DESCRIPTIONPort No.Port NameI/OFunction52VREF IInternal resistor divider generators common mode reference(CMR) voltage.53VREFMIDAC and ADC minimum reference.54RSETIFull scale DAC current adjustment.55COMPICompensation pin.56,57,62,63VGNDIVideo analog ground.58CDACOModulated chrominance output.59,60VVDDIVideo VCC(5V).61YDACOYluminance data bus for screen video port.64VDACOComposite video output.65ACAPIAudio CAP.71XOUTOCrystal output.74XINI27MHz crystal input.79PCLKI/O13.5MHz pixel clock.802XPCLKI/O27MHz (2 times pixel clock).82HSYN BOHorizontal sync (active low).84VSYN BOVertical sync (active low).8689,9294,96,98YUV(70)IYUV data bus for screen video port.Block Diagram for DAC & TV Encoder : ES3889 (ICM3)Visba ES3889Companion ChipCD-ROM ControllerCD-ROMRemote InterruptRemoteKitControl ControlReceiverVisba ES3880Audio DACSpeakers(Video CD)DSCROMPLLNTSC/PALVideoTelevisionEcho/Surround/Vocal AssistMic 1Pre ampDRAMVolume ControlVFDVFDMic 2Pre ampDriverPanelVolume ControlRXD-V252/V252-H7ADJUSTMENTAPPLYWAX AFTERADJUSTL312T306T303T302IC301L354T351T301L312IC303IC302X352NO.CHECKING ITEMSG 'N' SET FREQADJDC VOLTAGEREMARKSPOINTSPECFL531KHzT3061.1V ±0.1VADJUST UNTIL VOLTAGE1.AM FREQ(TP301)IS WITHIN GIVEN SPEC.COVERAGEFH1602KHz(TP301)8.8V ±0.5VCONFIRM VOLTAGE IS WITHINGIVEN SPEC2.AM IFFL990KHzT351-SP OUTPUT î ADJ T351 UNTIL MAX(50dB)(TP302)POINT FROM AC VOLTMETER3.AM FREQ.FL990KHzTP302-CONFIRM MAX. OUTPUT.TRACKING(50dB)(ADJUST IF 'NG')NO.CHECKING ITEMSG 'N' SET FREQADJSPECREMARKSPOINTFL87.5MHzT3011.3V ±0.1VADJUST UNTIL VOLTAGE IS WITHIN1.FM FREQ(TP301)GIVEN SPECCOVERAGEFH108.0MHz(TP301)7.8V ±0.8VCONFIRM VOLTAGE IS WITHINGIVEN SPEC.ADJUST COIL T302 UNTIL MAX.T302OUTPUT2.FM IF-10.7MHz(TP302)-3.FM FREQ.-98MHzL312-ADJUST L312 UNTIL MAXIMUMTRACKING(TP302)WAVEFORM APPEAR.CONDITION : AM MOD 30% DEV 400HzTOANTENATERMINAL75 75 37.5 S.G(50 )(50 )(50 )TOGNDTOGNDANT DUMMY CIRCUIT FOR FM*CENTER FREQ. MARKER 10.7MHz*CFM GOOD AND MAX 'S'CURVE IS OBTAINED.Adjustment Parts ConfigurationRXD-V252/V252-H8WIRING DIAGRAMCNS701BI2JK601FW951ACNP11CNP1CNP701WT902CNPK1CNP403HEAD-PHONESJK1CNS702CNP102CNP101CNS101CNS102CNP102SO801AC801T801CNP901BI901CNP905BI11BI905CNP2MOTORFANM901CNS902MCNP12BI8FW701 AFW701 BDISCSKIP CLOSEOPEN/SW721SW720FL701BI606CNP2JK671OUTVIDEOCNP9CNP10CNP3CNP3ACNP302AMFMSW601Lch 1AUX INRch 2SO401RchGNDGNDSO901LchSP6 ohmSO301AANTENNA20118201151816FFC5111011071011317311110FFCTF801150 C11313 1611616121219191133121271171818116621100kHz50kHz10kHz9kHz21SECTIONDISPLAYMICSECTIONRXD-V252SECTIONTUNER/MAIN/POWERCD/VCD/MP3SECTIONPICKUP UNITPWB-DMECHATAPEPOWERSECTIONPOWERSECTIONCD MOTORACEGIBDFHJ2 1357 46Refer to the schematic diagram for the value of resistors and capacitors. PC BOARD (Component side view)78C430C429C402C401C937C938C338C615C616C106C120C1 13C126C132C121C127C133C1 15C137C104C107C105C102C103C1 12C1 14C145C143C414C413C435R418R417C444C445MJ413MJ412MJ410MJ414MJ801C443C337C397R325R302C310C302C31 1R327C312C309R313C308C314C303C313C324R311C304C306R322MJ305C305C315R316C317C316C392C381C387C385C323C395C355C356C334C336C335C384C354C399C301C353C344C350AC351C342C361C366C363C382C330C332C369TP302MJ315C319C302C340C386R365R422R421R425R401R402 R403R404R407R935R936R931R932R616R615R619R1 18R134R103R147R144R110R104R126R132R130R121R135R136R101R102R131R129MJ101R133R1 19R123R106R113R108R109R107R120R111R105R112R128R137R127R125R148R122R141R124C441R415C442R416R614R424MJ402MJ41 1C375R380R379R372R383R385R376R359R381R373R374R352R323R353R355R388R351R362R361R356R377R360R393R395R378TP301R427R428R903R336MJ306R972C972EBEE BBEEBBEBEBEBE121920BEB1131911221211BEBE241311EBEBE71EBGOIGBEOIGOIE BBEBB EB EB EB EB EB E3126122413EBEBC933C928C922R973C920R982CF302C352T351T301T302C394X352L351R382R375J425J426R423J402J401C423J107R143J106C139L101C129C135C131R140R139C150C138C134R142J109C130C144C128C1 16L102C1 18 R1 17R1 16R149C148C141C1 19R145 J102J101R157J830J819J821J825J828J831J832J834J836J838J840J841J839J837J835J833J829J826J827J822J824J820R408J403C406C440J418J419J420J421J416J415J41710 1J414J413J412J41 1J422J423J427J307J428J429J430J431J432R410J404J441J405J406R429R431R430J316J424C617J861 J860C407C409C411C417C421C419J407J408C123J105C122C117R115C136R114J104J103C108L104C142C140C101R146R138J409J410C427C425C428C426C424C422 C420C418C388C404C408C410C412T30321C331C926R926R927C921R916R917C915R915R908J903J904C980J905R916C913R91 1C907R909R981R981J843C902J847R363R364C935C403C374C350J310J525R370X351CF351J312J313J302J440J437J439R613J436R409J434J435J433J305L352J306C370J304J303R350R309R314C367C373J849R904R902C904J845R910R804C81 1C812J806BI901J807C813R807R806J812J863J81 1R833C836J808113J815J901J805J902R919R980C910C940C914J908C923C929R924C925R923C924C929L921L920R922R953C954C955C916R954HD95115R907R905LG902R901R920C911R978C909C912J852C816C817C812J804C853J801J802J803J859C808C810LUG961C815C809LG904J858J810J809J862J857R811R851C849C873R834J853C936R934R933C906C905C901C372R357C365 C364R358J317J3081CF352J318J309C326C393TP301C380R387R392C398C357C358R391R384R386C391C396C307C362L312T306C368C3711121152413J850C818R814R815C852R906C908C820R912R979C903R913C917J906R420R419C971R971RL951C927C934R921J910240V220V127V110VFH808FH806FH804J854C803C802FH802FH801FH803FH805FH8075R951J856J855C806C805CV601R884R885F804F803F802T4A L 250VT4A L 250VT2A L 250VT2A L 250VF801R952J927116131K801K802J918J917J916J915J920J914J919IC401BI11BI403CNP101Q103Q109CNP701Q 111IC852Q603Q604Q401CNP901CNP951JK951PHONESVIDEOOUTD803DV601BI671JK671DV602D805D804D802D809S0801CNP905Q971CNP302S0301AD303D304Q360E BQ302VD302IC302D302D301BF301VD301VD303IC301FW951AZD351S0901LSPEAKERSRAUX-INSPANSELECTORAMFMANTENNAS0401SW601CNP2D951Q951Q904IC303Q903D971D305Q901IC812Q813ZD810Q902IC811D901IC901D902ZD904D903IC101CNS102Q102Q101Q107Q105Q104Q106Q1 14Q1 10Q1 12Q1 13Q108Q801ZD801ZD802ZD803D808D807D806Q402D851BI901D831D833KLNPRTMOQS2 1357 46Refer to the schematic diagram for the value of resistors and capacitors.PC BOARD (Component side view)109DM1D22D21ZD1ZD61CM50RM63R97RM21RM15RM27CM22RM49CM20RM26RM16CM19CM18RM22RM23R110R48R99R98R111C55R50R51R52R53R54R11C22C81R80C29C82C25R95R94R116R115RM28CM37CM40CM31CM30CM29RM45RM41RM25RM34 RM36CM35R68R67C80RM68RM73RM76C72R72RM47R77R76R75C77C76C75R78R71R73RM1RM2RM3RM77R