Kenwood RXD-M31MD Service Manual

Also see for LS-M31: Service manual

Contents

Kenwood RXD-M31MD Service Manual Manual pdf 5 page image

RXD-M31MD5CIRCUIT DESCRIPTION1. Initialization1-1 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 also 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• The 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.ch DestinationK2 E2 E1/H1 FM 97.50MHz FM 97.50MHz FM 97.50MHz2 FM 108.00MHz FM 108.00MHz FM 108.00MHz3 AM 630kHz AM 630kHz AM 630kHz4 AM 1000kHz AM 999kHz AM 999kHz5 AM 1440kHz AM 1440kHz AM 1440kHz6 AM 1610kHz AM 1602kHz AM 1602kHz7 FM 87.50MHz FM 87.50MHz FM 87.50MHz8 FM 87.50MHz FM 87.50MHz FM 87.50MHz9 FM 87.50MHz FM 87.50MHz FM 87.50MHz10 FM 89.10MHz FM 89.10MHz FM 89.10MHz11 FM 87.50MHz FM 87.50MHz FM 87.50MHz12 FM 90.00MHz FM 90.00MHz FM 90.00MHz13 FM 106.00MHz FM 106.00MHz FM 106.00MHz14 AM 530kHz AM 531kHz AM 531kHz15 FM 87.50MHz FM 87.50MHz FM 87.50MHz16 FM 98.00MHz FM 98.00MHz FM 98.00MHz17 FM 98.50MHz FM 98.50MHz FM 98.50MHz18 FM 87.50MHz FM 87.50MHz FM 87.50MHz19 AM 990kHz AM 990kHz AM 990kHz20 FM 97.40MHz FM 97.40MHz FM 97.40MHz21 FM 87.50MHz FM 87.50MHz FM 87.50MHz22 FM 87.50MHz FM 87.50MHz FM 87.50MHz23 FM 87.50MHz FM 87.50MHz FM 87.50MHz24 FM 87.50MHz FM 87.50MHz FM 87.50MHz25 FM 87.50MHz FM 87.50MHz FM 87.50MHz26 FM 87.50MHz FM 87.50MHz FM 87.50MHz27 FM 87.50MHz FM 87.50MHz FM 87.50MHz28 FM 87.50MHz FM 87.50MHz FM 87.50MHz29 FM 87.50MHz FM 87.50MHz FM 87.50MHz30 FM 87.50MHz FM 87.50MHz FM 87.50MHz31 FM 87.50MHz FM 87.50MHz FM 87.50MHz32 FM 87.50MHz FM 87.50MHz FM 87.50MHz33 FM 87.50MHz FM 87.50MHz FM 87.50MHz34 FM 87.50MHz FM 87.50MHz FM 87.50MHz35 FM 87.50MHz FM 87.50MHz FM 87.50MHz36 FM 87.50MHz FM 87.50MHz FM 87.50MHz37 FM 87.50MHz FM 87.50MHz FM 87.50MHz38 FM 87.50MHz FM 87.50MHz FML 74.00MHz39 FM 87.50MHz FM 87.50MHz FML 65.00MHz40 FM 87.50MHz FM 87.50MHz FML 69.00MHz2. TUNER preset frequencyITEMSPOWER OFFVOLUME 15BALANCE CENTERLOUDNESS OFFAMP EX. BASS ONINPUT SEL TUNERAUX INPUT 0BASS 0TREBLE 0BAND FMLAST f LIMITTUNER LAST PchAUTO/MONO AUTOPch TEST fCLOCK AM 12 : 00PROG ON AM 12 : 00CLOCK PROG OFF AM 12 : 00TIMER PRO MODE PLAYSOURCE TUNERPch 1EXE OFFOTT OFFSLEEP OFFPLAY MODE TRACKREPEAT OFFCD RANDOM OFFPLAY MODE STOPDIRECTION FORWARDDECK RVS MODE pOPERATION MODE STOPback up data4. Main microprocessor M30622MA-198FP (MAIN BOARD IC401)4-1 Microprocessor periphery block diagram4-2 Key matrixVref = 5VDesti- U-COM Discrimination Receiving frequency Channelnation Desti- DSW4 DSW3 DSW2 Band range space IF RFnationK, P K1 0 0 0 FM 87.5MHz~108.0MHz 100kHz +10.7MHz 25kHzAM 530kHz~1700kHz 10kHz +450kHz 10kHzM, X K2 0 0 1 FM 87.5MHz~108.0MHz 100kHz +10.7MHz 25kHzAM 530kHz~1610kHz 10kHz +450kHz 10kHzJ J 0 01 FM 76.0MHz~108.0MHz 100kHz -10.7MHz 25kHzAM 531kHz~1629kHz 9kHz +450kHz 9kHzE, T E1 1 1 0 FM 87.5MHz~108.0MHz 50kHz +10.7MHz 25kHzRDS AM 531kHz~1602kHz 9kHz +450kHz 9kHz3. Destination list of TUNER (DSW4=50pin, DSW3=49pin, DSW2=48pin)0=(input low) 1=(input high)IC202IC801 Q1001~1007IC301IC702IC102IC103E TYPEONLYIC401CD mechanismMechanismcontrolcircuit MechanismcontrolcircuitAuto reversecassettemechanismHead ampCXD2587QCD-DSPTUNERPLL ICLC72131MAUDIOAMP SYSTEM IC(LC75396)MDMDM-98ALEDED1FLCM1829C Key matrixencoderremoconRDSdemodu-latorDOT driverLC75710NE LED driverM30622MA-198FPu-COMDISPLAYBOARDVOLTAGE[V]