Kenwood-LSM31-cs-sm 维修电路原理图.pdf
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1、70%678679620605680681677686674684607612683682685676675603614JK602(HM-381MD)MICRO HiFi COMPONENT SYSTEMRXD-M31MD/LS-M31(M)SERVICE MANUAL 1999-12/B51-5555-00 (K/K) 1853KENWOOD-Crop. certifies this equipment conforms to DHHSRegulations No. 21 DFR 1040. 10, Chapter 1, Subchapter J.DANGER : Laser radiati
2、on when open and interlockdefeated.AVOID DIRECT EXPOSURE TO BEAM* Refer to parts list on page 42.In compliance with Federal Regulations, following are repro-ductions of labels on, or inside the product relating to laserproduct safety.Front cabinet(A60-1745-08)Top panel(A21-3801-08)Knob (MD EJECT)(K2
3、9-7702-08)Knob (VOLUME)(K29-7690-08)Control panel *(A21-)Knob (ON/STANDBY)(K29-7700-08)Cass door cover(A02-2945-08)Headphone jack(E11-0398-08)MD door(A52-0376-08)Knob (TAPE/STOP)(K29-7699-08)Knob (MD/CD PLAY)(K29-7698-08)Knob (PANEL BUTTON)(K29-7701-08)Knob (MENU)(K29-7692-08)Knob (TAPE REC)(K29-769
4、1-08)Knob(SET DEMO)(K29-7694-08)Knob (REPEAT)(K29-7693-08)Display lens(B12-0386-08)Cass door lens(B10-3524-08)Tuning panel(A21-3779-08)Knob (MD REC)(K29-7696-08)Knob (SOUND)(K29-7697-08)Knob (FF/TUNER/AUX)(K29-7695-08)RadioFans.CN 收音机爱 好者资料库SYSTEMMAIN UNITSPEAKERHM-381MD RXD-M31MDLS-M31(M)FM indoor
5、antenna (1)Loop antenna (1)Batteries (R6/AA) (2)* AC (T90-0846-08)(E03-0115-05)(T90-0801-05)plug adaptor (1)* Use to adapt the plug on the power cord to the shape of the wall outlet. (Accessory only for regions where use is necessary.)Remote control unit (1)(A70-1241-05) : RC-F503 (K,P,M)(A70-1287-0
6、5) : RC-M0505E (E,T)Battery cover (A09-1114-08)REMOTE CONTROL UNITRC-F0503ESLEEPTONESOUND123TIMER456REPEAT789RANDOM+100PGMCLEARDOT DISP.TIME DISP.TAPEP.CALLTAPETUNERBANDCDPTYTA/NEWSAUXSETENTERMUTE42 37%fi61POWERVOLUMEO.T.E.Operation to resetThe microcomputer may fall into malfunction (impossibil-ity
7、 to operate, erroneous display, etc.) when the powercord is unplugged while unit is ON or due to an externalfactor. In this case, execute the following procedure toreset the microcomputer and return it to normal condi-tion.Unplug the power cord from the power outlet then, whileholding the “set/demo”
8、 key depressed, plug the powercord again. Please note that resetting the microcomputer clears thecontents stored in and it returns to condition when it leftthe factory.22set/demoRXD-M31MD2CONTENTS / ACCESSORIES / CAUTIONSCONTENTS / ACCESSORIES / CAUTIONS.2EXTERNAL VIEW.3BLOCK DIAGRAM .4CIRCUIT DESCR
9、IPTION.5ADJUSTMENT.11WAVE FORM.12PC BOARD .14SCHEMATIC DIAGRAM .21EXPLODED VIEW .39PARTS LIST.42SPECIFICATIONS .53AccessoriesCautionsSystem configurationContentsRefer number for LS-M31(M), refer to parts list on page 52.Note related to transportation and movementBefore transporting or moving this un
10、it, carry out the follow-ing operations.1 Remove the CD or MD from the unit.2 Press the 6 key of the MD.3 Press the 6 key of the CD.4 Wait for some time and verify that the display becomesas shown in the figure.5 Wait a few seconds and turn the unit OFF.RadioFans.CN 收音机爱 好者资料库RXD-M31MD3EXTERNAL VIEW
11、FM300WFM75WAMGNDDIGITALOUTOPTICALANTENNAAUX INPUTAC 110120VAC 220240VSPEAKERS(616)+SUPERWOOFERPRE OUTMANUALAUTOPANELOPEN/CLOSERRLLMetal plate(RIGHT SIDE)(A51-1337-08)Metal plate(LEFT SIDE)(A50-1332-08)Speaker terminal(E70-0113-08)Phono jack(E63-1092-08)Slide switch(S62-0090-08)Power cord bushing *(J
12、42-)AC power cord *(E30-)Slide switch *(S62-0091-08)Lock terminal board *(E70-)HS cover(BLACK)(F07-1685-18)RCA jack(E63-1091-08)Oscillating module*(OPTICAL)(W02-1114-05)* Refer to parts list on page 42.RXD-M31MD4BLOCK DIAGRAMDISPLAYMD CONTROLBOARDMAIN BOARDONLYE,T TYPEPOWER BOARDRXD-M31MDBOARDBOARDK
13、EYBOARDKEYCASSETTE BOARDTRANSFORMER BOARDAUX INATT-3dBFMAMANTTUNERERASER/PBIAS TRAPOSCBIASQ713IC702IC703FE-BIASVR201(RF-AMP)CXA1571MIC202CXD2587Q(DSP/DAC/CD-TEXT)IC201(4ch BTL-DRIVER)BA5979SIC203MECHA.CDDIGITAL OUTRDS(MAIN u-COM)IC401IC103REMOTEFLFLDRIVER(A/D)KEYENCODERROTARYC0NTROLLEDMIDTREBLEBASSE
14、X.BASSLOUDJK602HEADPHONESAMPPOWERD+12VF.OFFu-COMCD+BFLFL FILAMENTIC801J10011007IC1001IC701IC301Q601,IC601Q612-32VAVR+8.0VQ607AC INDIGITAL OUTJK302DECKJK601SPEAKERSJK301JK101Q712MECHA.DECKQ1001-603AC5.6V+5.6VQ611-18.5V+18.5VPOWERAMPAVR+12VQ604FETESIRFFFDRFRDRTFDRTRDRSFDRSRDRMDPMD R. DMD T. DRch-OUTLc
15、h-OUTPB AMPREC AMPDOUT(FCS.TRK.SLD.SFD-DRIVE)+3dBMUTEDECKTUNERAUXCDMD+12VuPD78058GC-B20MD MECHA.IC501IC502CN502DIGITAL IN(LEVEL SHIFT)TC74HCT7007AFMD MECHA.MDM-98ACONTROL u-COMDSCKRESETPDOWNMD-STSERCHKDATAU.T.DU.K.DX1X1X2DSTBMDDATALOAD SW5.0V3.3V(5MHz)RXD-M31MD5CIRCUIT DESCRIPTION1. Initialization1-
16、1 Setting of initial conditionsWhile pressing the SET key, plug the AC power cordinto an AC power outlet.1-2 Initializing operation A microcomputer is initialized for start when the ACpower is turned on while pressing the SET key. Atthat time, CD mechanism, MD mechanism and CAS-SETTE mechanism are a
17、lso initialized. During the initial operation, the display shows “INITIAL-IZEdiately.” and normal indication, after that it goes off imme-1-3 Initial items and back up data1-4 Mechanism initialization1-4-1 CD mechanism If a mechanism error occurs, “C” is indicated on thedisplay.1-4-2 MD mechanism Th
18、e MD ON code is input within 4 seconds after turnedthe power port on, the MD initial code (D122H) is out-put. If the MD on code is not input, the error indication isdisplayed as M on the display.1-4-3 CASSETTE mechanism If a mechanism error occurs, X is indicated on the dis-play.chDestinationK2E2E1/
19、H1FM97.50MHz FM97.50MHz FM97.50MHz2FM108.00MHz FM108.00MHz FM 108.00MHz3AM630kHz AM630kHz AM630kHz4AM1000kHz AM999kHz AM999kHz5AM1440kHz AM1440kHz AM1440kHz6AM1610kHz AM1602kHz AM1602kHz7FM87.50MHz FM87.50MHz FM87.50MHz8FM87.50MHz FM87.50MHz FM87.50MHz9FM87.50MHz FM87.50MHz FM87.50MHz10FM89.10MHz FM
20、89.10MHz FM89.10MHz11FM87.50MHz FM87.50MHz FM87.50MHz12FM90.00MHz FM90.00MHz FM90.00MHz13FM106.00MHz FM106.00MHz FM 106.00MHz14AM530kHz AM531kHz AM531kHz15FM87.50MHz FM87.50MHz FM87.50MHz16FM98.00MHz FM98.00MHz FM98.00MHz17FM98.50MHz FM98.50MHz FM98.50MHz18FM87.50MHz FM87.50MHz FM87.50MHz19AM990kHz
21、AM990kHz AM990kHz20FM97.40MHz FM97.40MHz FM97.40MHz21FM87.50MHz FM87.50MHz FM87.50MHz22FM87.50MHz FM87.50MHz FM87.50MHz23FM87.50MHz FM87.50MHz FM87.50MHz24FM87.50MHz FM87.50MHz FM87.50MHz25FM87.50MHz FM87.50MHz FM87.50MHz26FM87.50MHz FM87.50MHz FM87.50MHz27FM87.50MHz FM87.50MHz FM87.50MHz28FM87.50MH
22、z FM87.50MHz FM87.50MHz29FM87.50MHz FM87.50MHz FM87.50MHz30FM87.50MHz FM87.50MHz FM87.50MHz31FM87.50MHz FM87.50MHz FM87.50MHz32FM87.50MHz FM87.50MHz FM87.50MHz33FM87.50MHz FM87.50MHz FM87.50MHz34FM87.50MHz FM87.50MHz FM87.50MHz35FM87.50MHz FM87.50MHz FM87.50MHz36FM87.50MHz FM87.50MHz FM87.50MHz37FM8
23、7.50MHz FM87.50MHz FM87.50MHz38FM87.50MHz FM87.50MHz FML 74.00MHz39FM87.50MHz FM87.50MHz FML 65.00MHz40FM87.50MHz FM87.50MHz FML 69.00MHz2. TUNER preset frequencyITEMSPOWEROFFVOLUME15BALANCECENTERLOUDNESSOFFAMPEX. BASSONINPUT SELTUNERAUX INPUT0BASS0TREBLE0BANDFMLAST fLIMITTUNERLAST PchAUTO/MONOAUTOP
24、chTEST fCLOCKAM 12 : 00PROG ONAM 12 : 00CLOCKPROG OFFAM 12 : 00TIMERPRO MODEPLAYSOURCETUNERPch1EXEOFFOTTOFFSLEEPOFFPLAY MODETRACKREPEATOFFCDRANDOMOFFPLAY MODESTOPDIRECTIONFORWARDDECKRVS MODEpOPERATION MODESTOPback up data4. Main microprocessor M30622MA-198FP (MAIN BOARD IC401)4-1 Microprocessor peri
25、phery block diagram4-2 Key matrixVref = 5VDesti-U-COMDiscriminationReceiving frequencyChannelnationDesti-DSW4DSW3DSW2BandrangespaceIFRFnationK, PK1000FM87.5MHz108.0MHz100kHz+10.7MHz25kHzAM530kHz1700kHz10kHz+450kHz10kHzM, XK2001FM87.5MHz108.0MHz100kHz+10.7MHz25kHzAM530kHz1610kHz10kHz+450kHz10kHzJJ001
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