Kenwood-RXDV323-cs-sm 维修电路原理图.pdf
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1、MINI HiFi COMPONENT SYSTEMRXD-V323/LS-N323SERVICE MANUAL(XD-V323) 1999-7/B51-5557-00 (K/K) 35270%In compliance with Federal Regulations, following are repro-ductions of labels on, or inside the product relating to laserproduct safety.KENWOOD-Crop. certifies this equipment conforms to DHHSRegulations
2、 No. 21 DFR 1040. 10, Chapter 1, Subchapter J.DANGER : Laser radiation when open and interlockdefeated.AVOID DIRECT EXPOSURE TO BEAMRefer to RXD-251 service manual (B51-5454-00),if require to know the mechanism operationdescription in detail.DISC SKIPDISC 3DISC 2DISC 1INPUTBANDPHONESEX.BASSTUNING MO
3、DEMULTI CONTROLMENUSELECTDISPLAYENTERDEMOON/STANDBYTAPE A/BREC/ARMVOLUMEA PLAYREC/PLAYBOPEN/CLOSE button(K29-7646-08)Front window(A29-1083-08)POWER button(K29-7715-08)Knob (JOG)(K29-7658-08)MIC volume knob(K29-7713-08)MIC jack(E11-0387-08)STOP button(K29-7654-08)Cassette window L(B10-3527-08)CD door
4、(A60-1751-08)Knob (VOLUME)(KK29-7652-08)Headphone jack(E11-0943-08)TUNING button assy(K29-7643-08)Control plate(A22-1831-08)PLAY button(K29-7656-08)Cassette window R(B10-3528-08)Cassette door R(A53-2159-08)Front panel(A60-1722-18)DISC button base assy(K29-7641-08)PLAY/PAUSE button(K29-7648-08)EX.BAS
5、S button assy(K29-7642-08)Cassette door L(A53-2158-08)RadioFans.CN 收音机爱 好者资料库RXD-V3232CONTENTS / ACCESSORIES / CAUTIONSFM indoor antenna (1)AM(T90-0815-08)loop antenna (1)AC(E03-0115-05) plug adaptor (1)Remote(A70-1321-08) : RC-V323 control unit (1)Batteries (R6/AA) (2)Use to adapt the plug on the p
6、ower cordto the shape of the wall outlet.(Accessory only for regions where use isnecessary.)(T90-0847-08)Operation to resetThe microcomputer may fall into malfunction (impossibility to oper-ate, erroneous display, etc.) when the power cord is unpluggedwhile power is ON or due to an external factor.
7、In this case, executethe following procedure to reset the microcomputer and return it tonormal condition.Press the POWER key while holding the Stop (7) key ofthe CD section pressed, to switch off the power, and thenswitch the power on again after a few seconds. Please note that resetting the microco
8、mputer clears the contentsstored in and returns and to condition when it left the factory.CONTENTS / ACCESSORIES / CAUTIONS.2EXTERNAL VIEW.3BLOCK DIAGRAM .4CIRCUIT DESCRIPTION.5ADJUSTMENT.8PC BOARD .11SCHEMATIC DIAGRAM .17EXPLODED VIEW .31PARTS LIST.33SPECIFICATIONS .Back coverContentsAccessoriesCau
9、tionsSystem configurationSYSTEMMAIN UNITSPEAKERXD-V323RXD-V323LS-N323 Reference number for LS-N323, refer toparts list on page 33.RadioFans.CN 收音机爱 好者资料库RXD-V3233EXTERNAL VIEW+SPEAKERS(616 )FM 75 AMANTENNAGNDAC 220240VAC 110120VRAUXINPUTAUXOUTPUTVIDEO OUTPUTLLLRRAntenna terminal(4p)(E70-0070-08)Slid
10、e switch (S62-0083-08)Phono jack(E63-1076-08)1P RCA jack(E63-1075-08)Lock terminal board(E70-0108-08)RXD-V3234BLOCK DIAGRAMA/BPLAYAMPALCP/BR/POSCBIASQ211/L201Q205Q203, Q204,Q206Q201Q202TAPE OUTRECPRE-AMPIC403RL501Q407,408MUTESYSTEMPOWER AMPIC501+VCC-VCCQ501-503DETECTOR+12V512Q511,MUTEJACKSPEAKERHEAD
11、PHONESQ703+7.5VQ701Q704+VCCtoXFORMER-12V+12V-VPCN701D702D701Q706IC801IC601CPUKEYMATRIXMIXBUFFAMPTUNEAM ANTGNDFM ANTAMPAM RFTUNEOSCANTRFIFTPLLL.P.FQ107,108AMPRFIC103u-COMAMPQ105CF1IFFILTERAM SECTIONAMFM SECTIONCF2OUTRCIC102TUNEFM RFFMOSCQ102GNDIC01 LA9241MRF SIGNAL PROCESSING/SERVO AMPCOMPACT DISC PL
12、AYERDIGITAL SIGNALCD POWER DRIVERIC04 BA5936SMPEG u-COMIC03 LC867240AIC02 LC78630EXTL0116.9344MHzNJM4558LOP AMPMMOTORDISCMOTORFEEDMTRAY MOTORT/T MOTORSWLIMIT INOUTPUTAUDIOCONTROL SWS01-04RchLchu-COMANALOG SIGNAL PROCESSOR(ASP)DSPtoTAPEAUXCDAMPIC402D/ACLKCONTROLSRAMA/DLPFLPFBUFFMIXAMPMICMIC VRECHO VR
13、SWLOGICIC301Q301Q302from CD-DSP PCBLC867240AIC07OSDLC74772V2SA1175EVIDEO BUFFERQ18,19Q202SC2785EFILTER2SA1175EQ22VIDEO O/PIC05CPU I/FCD-ROMDECODERSYSTEMDECODERMPEG AUDIODECODERDECODERMPEG VIDEODRAM ARBITERMPEG DECODERLC74202EIC08CPUPLL+VCO54MHzIC02(from CD DSPLC78630E)4MBIT DRAMIC10LC32V4265TfromMPE
14、GCN404VIDEO OUTJK402MICIC401Q404Q403,MUTEOUTAUXR/P SWITCHINGAMPRECTUNERVOLUMETREBLEMIDDLEBASSSPKR ATTSUPPLYL/RI CBUS DECODER + LATCHESJK502JK501Q504RECO/PSWITCHBUFFERRECBUFFERRECRchLchQ218Q217ERASECONTROLLERFLD DISPLAYFLD DRIVERBLOCKCD/VCDVOL/EQECHOTUNER PLLCASSLOGIC DECKDRIVERLOGIC DECKCONTROLR/PVF
15、VF-VCC-2VCCCD/VCD BLOCKto CPUVDD +5.6V+12V/MOTORSPK PROTECT INTOPROTECTFROMCURCUITTDA74390/30db2db stopLEVEL DET.METERVOLUMETAPE OUTA/BIC201FM RF IC101TUNER UNITCD MECHA. UNITRXD-V323IC302IC303MPEG UNITVOCAL FADERPCB ASSY24232019161412591113+FOCUSTRACKING816,91CBA3,13PTSMPEG AUDIOSTART TRIGGER16.934
16、4MHzCD DSP CLOCKTRACK 1INFORMATIONVB OOT17.734475MHzPAL/14.31818MHzNTSC/MPEG VIDEOPTSMPEG BITSTREAM+100K25262716152224192818172021222435291302 4891011121314100K100K100KAGNDVaOUTDIG-GNDSDASCLCREF6VREFGRXD-V3235CIRCUIT DESCRIPTION1. Reception Bands3. Microprocessor : (IC601,LC867248A)3-1. Pin descript
17、ion2. TUNER preset frequencyBandTuning RangeStepRFIFFM87.50108.00MHz50kHz25kHz+10.7MHzAM5311602kHz9kHz9kHz+450kHzM.chFrequency1FM87.5MHz2FM90.0MHz3FM98.0MHz4FM106.0MHz5FM108.0MHz6AM531kHz7AM603kHz8AM999kHz9AM1404kHz10AM1602kHz11FM87.5MHz12FM87.5MHz13FM87.5MHz14FM87.5MHz15FM87.5MHzM.chFrequency16FM87
18、.5MHz17FM87.5MHz18FM87.5MHz19FM87.5MHz20FM87.5MHz21FM87.5MHz22FM87.5MHz23FM87.5MHz24FM87.5MHz25FM87.5MHz26FM87.5MHz27FM87.5MHz28FM87.5MHz29FM87.5MHz30FM87.5MHzActivePin. No.NameI/ODescriptionHL1CEOCE output to LC72131D(TUNER,IC103).2RESET-OUTILC867240A(CD,IC03) reset out.O3DOIData input from LC72131
19、D(TUNER,IC103).4DIOData output to LC72131D(TUNER,IC03).5CLKOClock output to LC72131D and M66004SPA(FRONT,IC801).6DATA-OUTOSub CPU(CD PCB,IC03) interface data output.7DATA-INISub CPU(CD PCB,IC03) interface data input.8CLK-OUTOSub CPU(CD PCB,IC03) interface clock output.9N/C-No used.10STB-OUTOStrobe o
20、utput.11BUSY-INIBusy input.12RESETIReset signal input.O13POWER-DOWNIPower down input.O14GND-Ground.15VSS-Ground.16X1-Xtal 6.0MHz .17X2-Xtal 6.0MHz .18VDD1-Power supply(+5.0V).1921K1K3IKey input(K1K3).22K4-Connected to VCC.23L/MILevel meter.24EX.BASSIExtra bass ON/OFF signal input.25DECK-MODEIDeck mo
21、de switch input.26BAND-SWIBand switch input. 27GND-Ground.28SP PR INISpeaker protection input.OnOff29REMOTE INIRemocon signal input.O30VR+IVolume encoder(VR801) input.31VR-IVolume encoder(VR801) input.32PIC-UPIInput port of up switch for pick up.33PIC-DOWNIInput port of down switch for pick up.34DIS
22、C-COUNTIDisc counter switch input.35TURNTABLE SWITurntable switch input.36TRAY-OPENITray open switch input.37TRAY-CLOSEITray close switch input.RXD-V3236CIRCUIT DESCRIPTIONActivePin. No.NameI/ODescriptionHL38TURNTABLE MOTOR +OTurntable motor(+) control.39TURNTABLE MOTOR -OTurntable motor(-) control.
23、40TRAY MOTOR +OTray motor(+) control.41TRAY MOTOR -OTray motor(-) control.42MOTOR SPEEDOMotor speed control.4345-No used.46AUX-No used.47TAPEOSystem muting control.O48TUNER-No used.49CD-No used.50,51-No used.52LED STANDBYOStandby LED control.O53TIMEROTimer LED control.O54TAPE M/M SW AIInput port of
24、mode switch for A deck mechanism.StopPlay55TAPE M/M SW BIInput port of mode switch for B deck mechanism.StopPlay56VDD-Power supply(+5.0V).57VSS-Ground.58TAPE M/H SW AIHalf switch input of A deck mechanism.59TAPE M/H SW BIHalf switch input of B deck mechanism.60REC.FWD SWIREC forward switch input.61R
25、EC.RVS SWIREC reverse switch input.62REEL PULS AIReel pulse input of A deck.63REEL PULS BIReel pulse input of B deck.64TAPE M.VCC-Power supply for deck mechanism.PlayStop65RECODeck recording control.RecOther66SOL.BOControl port of solenoid for deck B. OnOff67DUBBINGODubbing control.DubbNor68SOL.AOCo
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