Kenwood-RXDV323-cs-sm 电路图维修手册.pdf

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1、MINI HiFi COMPONENT SYSTEM RXD-V323/LS-N323 SERVICE MANUAL (XD-V323) 1999-7/B51-5557-00 (K/K) 352 70% In compliance with Federal Regulations, following are repro- ductions of labels on, or inside the product relating to laser product safety. KENWOOD-Crop. certifies this equipment conforms to DHHS Re

2、gulations No. 21 DFR 1040. 10, Chapter 1, Subchapter J. DANGER : Laser radiation when open and interlock defeated. AVOID DIRECT EXPOSURE TO BEAM Refer to RXD-251 service manual (B51-5454-00), if require to know the mechanism operation description in detail. DISC SKIP DISC 3DISC 2DISC 1 INPUTBAND PHO

3、NES EX.BASSTUNING MODE MULTI CONTROL MENUSELECT DISPLAY ENTER DEMO ON/STANDBY TAPE A/BREC/ARM VOLUME A PLAY REC/ PLAYB OPEN/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-

4、7654-08) Cassette window L (B10-3527-08) CD door (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

5、 button base assy (K29-7641-08) PLAY/PAUSE button (K29-7648-08) EX.BASS button assy (K29-7642-08) Cassette door L (A53-2158-08) RadioFans.CN 收音机爱好者资料库 RXD-V323 2 CONTENTS / ACCESSORIES / CAUTIONS FM indoor antenna (1) AM (T90-0815-08) loop antenna (1) AC (E03-0115-05) plug adaptor (1) Remote (A70-1

6、321-08) : RC-V323 control unit (1) Batteries (R6/AA) (2) Use to adapt the plug on the power cord to the shape of the wall outlet. (Accessory only for regions where use is necessary.) (T90-0847-08) Operation to reset The microcomputer may fall into malfunction (impossibility to oper- ate, erroneous d

7、isplay, etc.) when the power cord is unplugged while power is ON or due to an external factor. In this case, execute the following procedure to reset the microcomputer and return it to normal condition. Press the POWER key while holding the Stop (7) key of the CD section pressed, to switch off the p

8、ower, and then switch the power on again after a few seconds. Please note that resetting the microcomputer clears the contents stored in and returns and to condition when it left the factory. CONTENTS / ACCESSORIES / CAUTIONS.2 EXTERNAL VIEW.3 BLOCK DIAGRAM .4 CIRCUIT DESCRIPTION.5 ADJUSTMENT.8 PC B

9、OARD .11 SCHEMATIC DIAGRAM .17 EXPLODED VIEW .31 PARTS LIST.33 SPECIFICATIONS .Back cover Contents Accessories Cautions System configuration SYSTEMMAIN UNITSPEAKER XD-V323RXD-V323LS-N323 Reference number for LS-N323, refer to parts list on page 33. RadioFans.CN 收音机爱好者资料库 RXD-V323 3 EXTERNAL VIEW +

10、+ SPEAKERS (616 ) FM 75 AM ANTENNA GND AC 220240VAC 110120V R AUX INPUT AUX OUTPUT VIDEO OUTPUT L L L R R Antenna terminal(4p) (E70-0070-08) Slide switch (S62-0083-08) Phono jack (E63-1076-08) 1P RCA jack (E63-1075-08) Lock terminal board (E70-0108-08) RadioFans.CN 收音机爱好者资料库 RXD-V323 4 BLOCK DIAGRA

11、M A/B PLAY AMP ALCP/B R/P OSC BIAS Q211/L201 Q205 Q203, Q204, Q206 Q201Q202 TAPE OUT REC PRE-AMP IC403 RL501 Q407, 408 MUTE SYSTEM POWER AMP IC501 +VCC -VCC Q501-503 DETECTOR +12V 512 Q511, MUTE JACK SPEAKER HEADPHONES Q703 +7.5V Q701 Q704 +VCC to XFORMER -12V +12V -VP CN701 D702 D701 Q706 IC801 IC6

12、01 CPU KEY MATRIX MIX BUFF AMP TUNE AM ANT GND FM ANT AMP AM RF TUNE OSC ANT RF IFT PLL L.P.F Q107,108 AMP RF IC103 u-COM AMP Q105 CF1 IF FILTER AM SECTION AM FM SECTION CF2 OUT RC IC102 TUNE FM RF FM OSC Q102 GND IC01 LA9241M RF SIGNAL PROCESSING/SERVO AMP COMPACT DISC PLAYER DIGITAL SIGNAL CD POWE

13、R DRIVER IC04 BA5936S MPEG u-COM IC03 LC867240A IC02 LC78630E XTL01 16.9344MHz NJM4558L OP AMP M MOTOR DISC MOTOR FEED M TRAY MOTOR T/T MOTOR SW LIMIT IN OUTPUT AUDIO CONTROL SW S01-04 Rch Lch u-COM ANALOG SIGNAL PROCESSOR(ASP) DSP to TAPE AUX CD AMP IC402 D/ACLK CONTROLSRAM A/D LPF LPF BUFFMIX AMP

14、MIC MIC VR ECHO VR SW LOGIC IC301 Q301Q302 from CD-DSP PCB LC867240A IC07 OSD LC74772V 2SA1175E VIDEO BUFFER Q18,19 Q20 2SC2785E FILTER 2SA1175E Q22 VIDEO O/P IC05 CPU I/F CD-ROM DECODER SYSTEM DECODER MPEG AUDIO DECODER DECODER MPEG VIDEO DRAM ARBITER MPEG DECODER LC74202E IC08 CPU PLL+VCO 54MHz IC

15、02 (from CD DSP LC78630E) 4MBIT DRAM IC10 LC32V4265T from MPEG CN404 VIDEO OUT JK402 MIC IC401 Q404 Q403, MUTE OUT AUX R/P SWITCHING AMP REC TUNER VOLUMETREBLEMIDDLEBASS SPKR ATT SUPPLY L/R I CBUS DECODER + LATCHES JK502 JK501 Q504 REC O/P SWITCH BUFFER REC BUFFER REC Rch Lch Q218 Q217 ERASE CONTROL

16、LER FLD DISPLAY FLD DRIVER BLOCK CD/VCD VOL/EQ ECHO TUNER PLL CASS LOGIC DECK DRIVER LOGIC DECK CONTROL R/P VF VF -VCC -2VCC CD/VCD BLOCK to CPU VDD +5.6V +12V/MOTOR SPK PROTECT IN TO PROTECT FROM CURCUIT TDA7439 0/30db 2db stop LEVEL DET. METER VOLUME TAPE OUT A/B IC201 FM RF IC101 TUNER UNITCD MEC

17、HA. UNIT RXD-V323 IC302IC303 MPEG UNIT VOCAL FADER PCB ASSY 24 23 20 19 16 14 1 2 5 9 11 13 + + FOCUS TRACKING 8 1 6,9 1 C B A 3,13 PTS MPEG AUDIO START TRIGGER 16.9344MHz CD DSP CLOCK TRACK 1 INFORMATION VB OOT 17.734475MHz PAL/ 14.31818MHz NTSC/ MPEG VIDEO PTS MPEG BIT STREAM + 100K 25262716152224

18、192818172021222 4 3 5 29 1 30 2 4 8 9 10 11 12 13 14 100K100K100K AGND Va OUT DIG-GND SDA SCL CREF 6 VREF G RXD-V323 5 CIRCUIT DESCRIPTION 1. Reception Bands 3. Microprocessor : (IC601,LC867248A) 3-1. Pin description 2. TUNER preset frequency BandTuning RangeStepRFIF FM87.50108.00MHz50kHz25kHz+10.7M

19、Hz AM5311602kHz9kHz9kHz+450kHz M.chFrequency 1FM87.5MHz 2FM90.0MHz 3FM98.0MHz 4FM106.0MHz 5FM108.0MHz 6AM531kHz 7AM603kHz 8AM999kHz 9AM1404kHz 10AM1602kHz 11FM87.5MHz 12FM87.5MHz 13FM87.5MHz 14FM87.5MHz 15FM87.5MHz M.chFrequency 16FM87.5MHz 17FM87.5MHz 18FM87.5MHz 19FM87.5MHz 20FM87.5MHz 21FM87.5MHz

20、 22FM87.5MHz 23FM87.5MHz 24FM87.5MHz 25FM87.5MHz 26FM87.5MHz 27FM87.5MHz 28FM87.5MHz 29FM87.5MHz 30FM87.5MHz Active Pin. No.NameI/ODescription HL 1CEOCE output to LC72131D(TUNER,IC103). 2RESET-OUTILC867240A(CD,IC03) reset out.O 3DOIData input from LC72131D(TUNER,IC103). 4DIOData output to LC72131D(T

21、UNER,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 output. 11BUSY-INIBusy input. 12RESETIR

22、eset signal input.O 13POWER-DOWNIPower down input.O 14GND-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 mode switch input. 26BAND-S

23、WIBand switch input. 27GND-Ground. 28SP PR INISpeaker protection input.OnOff 29REMOTE INIRemocon signal input.O 30VR+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. 34DISC-COUNTIDisc coun

24、ter switch input. 35TURNTABLE SWITurntable switch input. 36TRAY-OPENITray open switch input. 37TRAY-CLOSEITray close switch input. RXD-V323 6 CIRCUIT DESCRIPTION Active Pin. No.NameI/ODescription HL 38TURNTABLE MOTOR +OTurntable motor(+) control. 39TURNTABLE MOTOR -OTurntable motor(-) control. 40TRA

25、Y MOTOR +OTray motor(+) control. 41TRAY MOTOR -OTray motor(-) control. 42MOTOR SPEEDOMotor speed control. 4345-No used. 46AUX-No used. 47TAPEOSystem muting control.O 48TUNER-No used. 49CD-No used. 50,51-No used. 52LED STANDBYOStandby LED control.O 53TIMEROTimer LED control.O 54TAPE M/M SW AIInput po

26、rt of mode switch for A deck mechanism.StopPlay 55TAPE M/M SW BIInput port of mode switch for B deck mechanism.StopPlay 56VDD-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 swit

27、ch input. 61REC.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.PlayStop 65RECODeck recording control.RecOther 66SOL.BOControl port of solenoid for deck B. OnOff 67DUBBINGODubbing contro

28、l.DubbNor 68SOL.AOControl port of solenoid for deck A. OnOff 69REC.MUTEOREC mute control.OtherRec 70BIASODeck bias control.RecOther 71A or BODeck(A or B) control.AB 72REC.BEAT CANCELOREC beat cancel.OnOff 73TAPE MUTEOMuting control of deck line output.OnOff 7478-No used. 79SP SW OTOSpeaker relay con

29、trol.OnOff 80REM CODEIGround. 81,82-Ground. 83JOG ECD AIInput port of jog encoder(A).O 84JOG ECD BIInput port of jog encoder(B).O 85-Ground. 86FM STEREO INIFM stereo signal input.MonoStereo 87SDAI/OTDA7439(MAIN PCB,IC104) SDA. 88SCLI/OTDA7439(MAIN PCB,IC104) SCL. 89VSS2-Ground. 90VDD2-Power supply(+

30、5.0V). 91POWER-SW-No used. 92SYS-MUTEOSystem muting control.OffOn 93TU-MUTEOTuner muting control.OnOff 94LINE OUT MUTEOMuting control of line out.OnOff 95EX.BASS OUT-No used. 96V/CANCEL OUTOVoice cancel out.OffOn 97CSOM66004(FL driver) CS.O 98RESETOM66004(FL driver) reset.O 99,100-No used. 7 RXD-V32

31、3 CIRCUIT DESCRIPTION 4. MPEG Microprocessor : LC867240(CD PCB,IC03) 4-1. Pin description Active Pin.No.NameI/ODescription HL 1N/P SEL OUT-No used. 2RESET OUTOLC74202E(IC08),LC74772V(IC07) reset out.O 3DIILC74772V(IC07) SIN. 4DOONo used. 5CLILC74772V(IC07) clock. 6DATA OUTOMain CPU(IC601) interface

32、data out. 7DATA INIMain CPU(IC601) interface data in. 8SCKIMain CPU(IC601) interface clock. 9STB INIMain CPU(IC601) interface STB in. 10BUSY OUTOMain CPU(IC601) interface STB out. 11MIRQILC74202E(IC08) IRQ. 12RESETIReset input.O 13,14VSS-VSS 15VSS-VSS 16,17CF1/CF2-Xtal 6.0MHz. 18VDD-Power supply(+5.

33、0V). 1929VSS-VSS 30VIDEO LEDOLED(VIDEO CD) control.O 31PBC-Playback control.O 3237-No used. 38VDD CONTROLONo used. 3955N/C-No used. 56VDD-Power supply(+5.0V). 57VSS-VSS 5861-No used. 62CEOLC74202E(IC08) CE. 63CLOLC74202E(IC08) CL. 64DOI/OLC74202E(IC08) DO. 65-No used. 66DII/OLC74202E(IC08) DI. 6773-

34、No used. 74SL +OSled motor control(+).O 75SL -OSled motor control(-).O 76SPEED BOSpeed control terminal to IC01(LA9241). 77SPEED AOSpeed control terminal to IC01(LA9241). 78AUDIO MUTEOAudio muting control.OnOff 79MUTEOBA5936S(IC04) muting control.CDOther 80PIC LIMIT SWIInput port of pick up limit sw

35、itch.O 8186-VSS 87CLOCommand clock output to LC78630E(IC02) and LA9241(IC01). 88DATOCommand output to LC78630E(IC02) and LA9241(IC01). 89VSS-VSS 90VDD-Power supply(+5.0V). 91SQ OUTISub code Q input from LC78630E(IC02). 92RWCOLC78630E(IC02) RWC,LA9241(IC01) CE. 93RESOChip reset output to LC78630E(IC0

36、2). 94DRFIDRF from LA9241(IC01). 95,96N/C-No used. 97CE-No used. 98VOC-No used. 99CSOCS to LC74772V(IC07). 100RESET OUT-No used. 5. Key matrixPORTSW1SW2SW3SW4SW5SW6SW7 SW8 Pin 19 (K1) PowerInputEX Bass Display /Demo Menu Select Enter Pin 20 (K2) BandTuning Mode Tape Rec A/BPlayStopFFREW Pin 21 (K3)

37、CD Play Pause StopDisc Skip Disc 3Disc2 Disc 1 Open Close ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?

38、? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?

39、? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 8 RXD-V323 ADJUSTMENT NO.ITEM INPUT SETTING OUTPUT SETTING TUNER SETTING ALIGNMENT POINTS ALIGN FORFIG. 1.IF (D) 531 kHz 1 kHz, 30% MOD 60 dBu (ANT INPUT) (B) 5

40、31 kHzT102 Maximum output (Minimum distortion) 2. LOW END TRACKING (D) 531 kHz 1 kHz, 30% MOD 30 dBu (ANT INPUT) (B)531 kHzT103Maximum output 3. HIGH END TRACKING (D) 1602 kHz 1 kHz, 30% MOD 30 dBu (ANT INPUT) (B)1602 kHzTC101Maximum output 4.VT Connect the DC voltage meter to TP1. 531 kHzT104VT=1.2

41、V0.05V 1602 kHz Check the VT=7.3V1.0V MW SECTION FM SECTION NO.ITEM INPUT SETTING OUTPUT SETTING TUNER SETTING ALIGNMENT POINTS ALIGN FORFIG. 1 AUTO STOP LEVEL (A) 98.0 MHz MONO 1kHz, 75kHz dev 30dBu (ANT input) AUTO 98.0MHz SFR101 Adjust SFR101 and stop at the point where FLD801( ) goes ON. FM 75 AM ANTENNA GND (A) (C) (D) AM-SG FM-MPX-SG FM-MPX-SG POLAR SG Dummy antenna INSTRUMENTS CONNECTION Oscilloscope AC voltmeter (B) Distortion meter TO TUNER UNIT CN101, pin 9 (Lch) pin 7 (Rch) pin 8 (GND) ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?