Kenwood-LSN-302-Service-Manual电路原理图.pdf

MINI HiFi COMPONENT SYSTEMRXD-302/302E/352/352E/372SLS-N302/N352SERVICE MANUAL(XD-302/302E/352/352E/372S)*©1999-5/B51-5530-00 (K/K) 2299DISC SKIPDISC3DISC2DISC1INPUTBANDPHONESEX.BASSTUNING MODEMULTI CONTROLMENUSELECTDISPLAYENTERDEMOON/STANDBYTAPE A/BREC/ARMVOLUMEAPLAYREC/PLAYBOPEN/CLOSE button(K29-7646-08)Front window(A29-1071-08)POWER button(K29-7650-08)Knob (JOG)(K29-7658-08)EX. BASS button assy(K29-7642-08)Knob (STOP)(K29-7654-08)Cass window L(B10-3527-08)Cass door L(A53-2158-08)Tuning button assy(K29-7643-08) Headphone jack(E11-0386-08)PLAY button(K29-7656-08) Knob (VOLUME)(K29-7652-08) CD door(A60-1723-08)PLAY PAUSE button(K29-7648-08)DISC button bass assy(K29-7641-08)Cass window R(B10-3528-08)Cass door R(A53-2159-08)KENWOOD-Crop. certifies this equipment conforms to DHHSRegulations No. 21 DFR 1040. 10, Chapter 1, Subchapter J.DANGER : Laser radiation when open and interlock defeated.AVOID DIRECT EXPOSURE TO BEAMIllust. is RXD-352M.In compliance with Federal Regulations, following are reproduc-tions of labels on, or inside the product relating to laser productsafety.*Refer to page 2 if you want to know system configuration.Refer to service manual RXD-251/301/301E/301W/351/351E/351W/371S (B51-5454-00), if you require CD MECH-ANISM OPERATION DESCRIPTION in detail.RXD-302(K) COVER1,1( 99.6.18 0:31 PM yW2SYSTEMMAIN UNITDESTINATIONSPEAKERXD-302RXD-302E3LS-N302XD-302ERXD-302EE4LS-N302XD-352RXD-352TEMXYLS-N352XD-352ERXD-352EE2LS-N352XD-372SRXD-372SM2LS-N352AM(T90-0815-08)loop antenna (1)Remote(A70-1320-08) : RC-352control unit (1)Batteries (R6/AA) (2)FM indoor antenna (1)Europe and U.K.Other countriesAC(E03-0115-05) plug adaptor (1)Use to adapt the plug on the power cordto the shape of the wall outlet.(Accessory only for regions where use isnecessary.)(T90-0847-08): MXYM2(T90-0836-05): TEE2E3E4RXD-302/302E/352/352E/372S2CONTENTS / ACCESSORIES / CAUTIONSCONTENTS / ACCESSORIES / CAUTIONS.2EXTERNAL VIEW.3BLOCK DIAGRAM.4CIRCUIT DESCRIPTION.5ADJUSTMENT.7PC BOARD.11SCHEMATIC DIAGRAM.15EXPLODED VIEW.29PARTS LIST.32SPECIFICATIONS.Back coverContentsAccessoriesOperation 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. 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 microcomputer clears the contentsstored in and returns and to condition when it left the factory.System configurationCautionsRXD-302(K) COVER1,1( 99.6.18 0:31 PM yW3RXD-302/302E/352/352E/372S3EXTERNAL VIEWSlide switch (S62-0083-08)AC power cord(E30-2906-08)Top cabinet(A01-3725-08)Phono jack(E63-1073-08)Lock terminal board(E70-0108-08)Antenna terminal(E70-0070-08)Illust. is RXD-352M.RXD-302(K) COVER1,1( 99.6.18 0:31 PM yW6RXD-302/302E/352/352E/372S4BLOCK DIAGRAM24 2313+100K17 18 28 19 20 21215 16 26 25 23 24121113141098722435291306100K100K100K100K100K100K100KGG21 2 5 91120 19 16 14+27CDTUNERTAPEA/BPLAYAMP.ALCPLAYR/POSCBIAS(Q213,L201)Q205Q203 Q204Q206Q201Q202TAPE OUTQ403,404REC BUFFERTAPE OUT REC. OUTREC INDECK A/B SW.B+PRE. SET EQPRE-AMPIC402RL501Q408,409MUTESYSTEMPOWERIC501+Vcc-VccQ501-503DETECTORu-COMSPEAKERPROTECTOR+12V506Q505,MUTEJACKSPEAKERHEADPHONES+5.5VQ706Q707Q705+Vcc(SWITCHED)toX'FORMER-35VQ708+12V-VccCN702D709D710Q702FLD DISPLAYIC601u-COMKEYMATRIXCN05-to CD PCBto MAIN PCBRFAMP FILTERRCTUNEAMPMIXIFT CF1BUFFOSCTUNEAMPIFCF2TUNEAM RFAMPRFQ106FM SECTIONQ101PLLu-COMIC201L.P.FAM SECTIONV.T.AM ANTGNDFM ANT OUTMIXBUFFAMPTUNEAMPAM RFTUNEOSCANTRFPLLL.P.FAMPRFIC201u-COMAMPQ106IFT CF1IFFILTERAM SECTIONFM SECTIONCF2OUTRCIC102IC102TUNEFM RFFMOSCQ102IC01 CXA1992BRRF SIGNAL PROCESSING/SERVO AMPPROCESSOR W/DACDIGITAL SIGNALCD POWER DRIVERIC03 BA5936SIC02 CXD2589QXTL0133.86MHzMMOTORDISCMOTORFEEDMTRACKINGFOCUSTRAY MOTORT/T MOTORSW.LIMIT INOUTPUTAUDIOCONTROL SW.S01-04RchLchu-COMAUXBASSMIDDLETREBLEVOLUMESPKR ATTLEFTPRE. SET EQVOLUME MIDDLETREBLE BASSSUPPLYSPKR ATTLEFTI CBUS DECODER+ LATCHESINPUT MULTIPLEXER+GAINVREF0/30 dB2dB STEPLchRchR/P SWITCHINGLchRchREC.AMP.-Vcc 12V+Vcc 12VJK601AMP.PRE. AMP.IC602SUB WOOFERB +12VFRONT PCBtoMOTOR SOL.7.2MHZ7.2MHZV.TIFTAMIC201FM FRONT-ENDFM RF IC101TUNER PCB UNITCD MECHA. UNITTUNER PCB UNITMAIN PCB/FRONT PCBIC401RXD-302(K) COVER1,1( 99.6.18 0:31 PM yW7RXD-302/302E/352/352E/372S5CIRCUIT DESCRIPTIONCD MECHA(9140-C1)DECK MECHAIC01IC601IC201RF AMP/SERVO(CXA1992BR)DECK PLAY/REC EQ IC(TA8189N)IC02IC102MAIN U-COMDSP(CXD2589Q)FM/AM/MPX IC(LC1833L)LC867240A-5L36IC03IC103BTL DRIVER(BA5936S)PLL IC(LC72131D)IC801IC401FL CONTROLLER(M66004SPA)AUDIO CONTROL IC(TDA7439)00.290.610.991.381.822.32.772.77Tape speedMTT-111TCC-100 SCC-1727 3 kHz, -4 dB(A)PLAYSFR201Adjust so that Frequency is 3 kHz at the center of the tape.Playback levelTCC-120 315 Hz 0dB(A) PLAYApprox. -5dBmreference levelRecording levelPut standard test tape(TCC-120)into B deck. Put standard blank tape into A deck.(A)Dubbing and playback.Approx. -5dBmreference levelCASSETTE DECK SECTIONINSTRUMENTS CONNECTIONRXD-302(K) COVER1,1( 99.6.18 0:31 PM yW18RXD-302/302E/352/352E/372S10ADJUSTMENTFIG.(a)No.ITEMINPUTSETTINGSOUTPUTSETTINGSALIGNMENTPOINTSALIGNFORPLAYERSETTINGS1LASER POWER-Apply the sensor sectionof optical power meteron the pickup lens.-On the power from0.08 to 0.15 mW,when the diffractiongrating is correctlyaligned with the RFlevel of 0.6 Vp-p ormore.Press thePLAY/PAUSE key.PickupNote:Type 4 disc : SONY YEDS-18 Test Disc or equivalent.(KTD-0)0.080.15 mWOptical power meter(a) Laser power CD SECTIONRXD-302(K) COVER1,1( 99.6.18 0:31 PM yW19