Kenwood-RXDM-55-Service-Manual电路原理图.pdf

70%MICRO HI-FI COMPONENT SYSTEMRXD-M55-H/M55-N/M55-S©2002-4 PRINTED IN KOREAB51-5790-00 (K/K) 3729 *Refer to parts list on page 25. In compliance with Federal Regulations, following are repro-duction of labels on, or inside the product relating to laserproduct safety.KENWOOD-Corp. certifies this equipment conforms to DHHSRegulations No.21 CFR1040. 10, Chapter 1, subchapter J.DANGER : Laser radiation when open and interlock defeated. AVOID DIRECT EXPOSURE TO BEAM.Front glass *(B10-)Knob *(K29-) Cassette lid *(A53-)Miniature Phone jack (E11-0399-05)Panel ass'y *(A60-) Knob *(K29-)RXD-M55E-H/M55E-N/M55E-SSERVICE MANUALFront glass *(B10-)RXD-M55-H/M55-N/M55-S/M55E-H/M55E-N/M55E-S2CONTENTS / ACCESSORIES / CAUTIONSCONTENTS / ACCESSORIES.2EXTERNAL VIEW.3DISASSEMBLY FOR REPAIR.4BLOCK DIAGRAM.5CIRCUIT DESCRIPTION.6ADJUSTMENT.16WIRING DIAGRAM.18PC BOARD.19SCHEMATIC DIAGRAM.24 EXPLODED VIEW.33PARTS LIST.35SPECIFICATIONS.Back coverContentsAC Plug Adaptor (1)(E03-0115-05) Use to adapt the plug on thepower cord to the shape of thewall outlet.(Accessory only for regions whereuse is necessary.) FM indoor antenna (1)(T90-0855-05):V(T90-0877-05):EE1E2E3E4E5KK1M2H1H2T2T3M1X1X2AM loop antenna (1)(T90-0852-05):V(T90-0893-05):EE1E2E3E4E5KK1M2H1H2T2T3M1X1X2 Remote control unit (1)(A70-1568-05):EE1E2E3E4E5H2T2T3H1(A70-1569-05):KK1M1M2VX1X2 Batteries (R6/AA) (2)AccessoriesCautions1Remove the CD from the unit.2Press the CD 6key.3Wait for some time and verify that the displayappears as above.4Wait a few seconds and turn the unit OFF.Note related to transportation and movementBefore transporting or moving this unit, carry outthe follow-ing operations.Operation to resetThe microcomputer may fall into malfunction (impossibil-itytooperate, 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,thenwhile holding the POWER or key depressed, plugthepower cord again.÷Please note that resetting the microcomputer clearsthe contents stored in and it returns to conditionwhen it left the factory.orAfter resetting the microcomputer, the display will showas follow:The marking of products using lasers(For countries other than U.S.A., U.S.-Military and Canada)The marking of this product has been classified as Class 1. It meansthat there is no danger of hazardous radiation outside the product.Location: Back panelCLASS 1LASER PRODUCTCAUTIONVISIBLE LASER RADIATIONWHEN OPEN. DO NOTSTAREINTO BEAM OR VIEW DIRECTLYWITH OPTICALINSTRUMENTS.Inside this laser product, a laser diode classified as Class 3A laserradiation is contained as alerted by the internal caution label shownabove. Do not stare into beam or view directly with optical instruments.RXD-M55-H/M55-N/M55-S/M55E-H/M55E-N/M55E-S3EXTERNAL VIEWDIGITALOUTOPTICALAUXINPUTLRGNDAMANTENNAFRONTSPEAKERS(6-16)L-+RFM75Metallic cabinet *(A01-)AC power cord *(E30-)Lock terminal board *(E70-)Pin jack(E63-1264-05)AC power cord bushing (J42-) Tuner ass'y *(W02-)Oscillating module(W02-1114-15)*Refer to parts list on page 25. RXD-M55-H/M55-N/M55-S/M55E-H/M55E-N/M55E-S4DISASSEMBLY FOR REPAIRHow to open the CD tray when it does not come out.1. Insert a flat driver and so on to a square hole in the mechanism asshown in the figure.2. Push a rack gear in the direction of arrow.(At this time, the tray comes out slightly frontward.)3. The tray can be opened by hand.RXD-M55-H/M55-N/M55-S/M55E-H/M55E-N/M55E-S5BLOCK DIAGRAMAM 0dB=180mVFM 0dB=600mV:75kDEV.0dB=1.2V:1kHz580mV300mV300mV+34dBTUNERCD 0dB0dBINPUT VOL.AUXTAPE -2dBSELECTORINPUT VOL. MAIN VOL.10 to -78dBMAIN VOL.20 to -18dBAMFMA.OUTPB AMP REC AMPVR1.2PLL DOSA CESA DATASA CLK SDSTREC/PLAYBEAT CANCELPHOTOSOLCPMREC-RREC-FPACK-SWPLAY-SWD.OUTA.OUT(ONLY E,T,H TYPE)FC DRTR DRSP DRSL DRTESL DFSL DRSP DRSP DFTR KRTR KF ABFC SRFC SFPDLDDCFELDCDATACLKCEA.MUTE ON/STANDBY+-B+BFL DRIVER+PRE. AMPLEDFL DRIVERON/OFF+u-COMSTAND-BY LEDTACT KEYAC INREMOCON. MODULEBACK-UP CIRCUITX14,K401FE+L1,2+9.0V0dBCASSETTE DECKCDTUNERTUNERFLATTAPE RECTAPE PLAYAUX INE.VOLINPUTVOL.AMPCDAUX INE.VOLX29,IC601LC75343MTUNER PACKERASEREC/PLAYHA12230NTIC1TRAPBIASOSCBIASDECK MECHADIGITAL OUTX29,A601DSPX29,IC22MN6627482WBDACMAIN u-COMX29,IC701REMOCON MODULEX14,A501X14,S516ROTALY ENCODERLEDKEYFL DRIVERX14,IC501X29,IC801RDS ICFLED5014ch DRIVERIC23RF-AMPAN8399SA-E1IC21CD MECHAX29,Q111-114POWER AMPPROTECTIONJ2X29,D3POWER AMP.X29,Q13-30VAVRX29,+5VAVRAVRIC101+9VFILPRIMARYRELAY+5.4VAVRIC402D403X14,-8dBATT.X29,J601LOUDNESS BASS,MID,TRETONE10dBEX BASSQ1,2K1HEAD-OUTPHONEREC OUTBIAS ADJ.Q15-18Q5X29,X29,X14,GAIN DISTRIBUTORVOL.MAINX29,Q10LEVEL DIAGRAM(X28- )RXD-M55W02-2919-05 (M TYPE)W02-2920-05 (OTHERS)RXD-M55RXD-M55-H/M55-N/M55-S/M55E-H/M55E-N/M55E-S6CIRCUIT DESCRIPTIONFrequencyFrequencyP.CHK1(K,P TYPE)K2(M,V TYPE)E1/E3P.CHK1(K,P TYPE)K2(M,V TYPE)E1/E3(E,E2,T,H,M,V,X)(E,E2,T,H,M,V,X)1FM 98.30MHzFM 98.30MHzFM 98.30MHz16FM 98.00MHzFM 98.00MHzFM 98.00MHz2FM 108.0MHzFM 108.0MHzFM 108.0MHz17FM 98.50MHzFM 98.50MHzFM 98.50MHz3FM 89.10MHzFM 89.10MHzFM 89.10MHz18FM 87.50MHzFM 87.50MHzFM 87.50MHz4FM 87.50MHzFM 87.50MHzFM 87.50MHz19AM 990kHzAM 990kHzAM 945kHz5FM 90.00MHzFM 90.00MHzFM 90.0.0MHz20FM 97.40MHzFM 97.40MHzFM 97.40MHz6FM 87.50MHzFM 87.50MHzFM 87.50MHz21AM 530kHzAM 530kHzAM 531kHz7FM 87.50MHzFM 87.50MHzFM 87.50MHz22FM 87.50MHzFM 87.50MHzFM 87.50MHz8AM 1610kHzFM 87.50MHzAM 1503kHz23FM 87.50MHzFM 87.50MHzFM 87.50MHz9AM 1700kHzAM 1610kHzAM 1584kHz24FM 87.50MHzFM 87.50MHzFM 87.50MHz10AM 1000kHzAM 1000kHzAM 999kHz25FM 87.50MHzFM 87.50MHzFM 87.50MHz11AM 630kHzAM 630kHzAM 621kHz26FM 87.50MHzFM 87.50MHzFM 87.50MHz12AM 1440kHzAM 1440kHzAM 1350kHz27FM 87.50MHzFM 87.50MHzFM 87.50MHz13FM 106.0MHzFM 106.0MHzFM 106.0MHz28FM 87.50MHzFM 87.50MHzFM 87.50MHz14AM 530kHzAM 530kHzAM 531kHz29FM 87.50MHzFM 87.50MHzFM 87.50MHz15FM 87.50MHzFM 87.50MHzFM 87.50MHz30FM 106.0MHzFM 106.0MHzFM 106.0MHzTypeE/E2/T/HK/PM/VXVoltage Range4.2V5.0V2.6V4.1V1.4V2.5V0.71.3VSetDestinationBandReceiving Frequency RangeChannelIFRFSpaceK/PK1FM87.5MHz108.0MHz100kHz+10.7MHz25kHzAM530kHz1700kHz10kHz+450kHz10kHzE/T/HE3FM87.5MHz108.0MHz50kHz+10.7MHz25kHzE2RDSAM531kHz1602kHz9kHz+450kHz9kHzM/X/VE1FM87.5MHz108.0MHz50kHz+10.7MHz25kHzAM531kHz1602kHz9kHz+450kHz9kHzM/VK2FM87.5MHz108.0MHz100kHz+10.7MHz25kHzAM530kHz1610kHz10kHz+450kHz10kHz1. Initializing1-1 Initializing Method While holding down the POWER key, plugged in the power cord to AC power wall outlet.1-2 Initializing Operation During the initial operation, the display shows “RESET“ and after that it will be returned to standby condition. If any mechanisms error occurred, the error indication is displayed as “ERR“ in the display.1-3 Mechanism Initializations1CD Mechanism If a mechanism error occurred, the error indication is displayed as “C ERR“ in the display.2Deck Mechanism If a mechanism error occurred, the error indication is displayed as “X ERR“ in the display.2. Tuner DestinationPin 3 of microcomputer (X29, IC701).3. Tuner Preset FrequencyRXD-M55-H/M55-N/M55-S/M55E-H/M55E-N/M55E-S7CIRCUIT DESCRIPTION8th Dot(Display)1st figure2nd figure3rd figure 4th figureMechanismFWD REC InhibitRVS REC InhibitCassette HalfTape PlayHalf SwitchDetection SWDetection SWDetection SWDetection SWONBlankBlankBlankBlankOFFEEEEKeysDisplayOperation 4 Seconds RecordingIf the REC/ARM key is pressed, the system record for 4 seconds.Then, it rewinds to the REC starting position and plays back automatically.TAPE RECTAPEIf the REC/ARM key is pressed, during the 4 seconds REC operation, thesystem records further for 4 seconds, then returns to the starting positionof the first 4 seconds REC operation and plays back.SOUNDBeat-C ONBeat cancel will be on while pressing the sound key.KeysDisplayOperationCD-PLAY/PAUSE05 : Tracking-servo on.(Cyclically changed the mode( : )Time Display Pickup moves inward.05 and 03 by pressing the key.)03 : Tracking-servo off. (for checking TE)( : )Time Display Pickup moves outward.CD STOP00 : 00Stop the CD operation.Adjustment value/mean value(Cyclically changed in the07 FG/FEFG value /FE valuestop mode only.)08 FB/FOFBAL value /FO value09 TG/TETG value /TE value10 TB/TOTBAL value /TO valueSKIP UPEx.0102 Track number up.SKIP DOWNEx.0201 Track number down.SKIP UPUsual Indication Play the first track number in the stop mode.SKIP DOWNUsual Indication Play the last track number in the stop mode.Test ModeKeysSetting MethodCD MODECD PLAY keyDECK MODETAPE PLAY Insert the AC cord to AC wall SUB CLOCK OSCMODE keyoutlet while holding down theDIAGNOSISleft key.4. Test Mode4-1 Setting method of the Test Mode The oscillation diagnosis (existence of oscillation and measurement of period) of a sub clock is performed before the testmode is entered. If the diagnosis result is OK, the system enters the test mode.If the diagnosis result is NG, the oscillation of the sub clock is diagnosed again. If the result is OK, the system enters thetest mode. If the diagnosis result is continuously NG 5 times, the system stops with “ERR1“ and “ERR2“ displayed. 4-2 Cancel of the test mode Initialized and cancel the test mode if pulling out the power cord. Cancel the test mode only if the power key is turned off.4-3 Contents of the Test Mode The muting during mode selection is not controlled in the test mode. During the test mode, it can be operated in a special manner that is different from an ordinary operation by using the keyson the main body, specifically as shown in the following tables.4-4 CD Test Mode4-5 Deck Test Mode Mechanism half switches indicationThe mechanism half switches status are indicated “blank“ or “E“ in the display.RXD-M55-H/M55-N/M55-S/M55E-H/M55E-N/M55E-S8CIRCUIT DESCRIPTIONX28,IC1 DECK SYSTEM ICHA12230NTX14,IC501FLDRIVER(MN12510F)DECK MECHA.X14,ED501X29,IC601SYSTEM IC(LC75343M)X29,IC701MN101C51FGBX29,IC22TUNER ASSYDSPIC(MN6627482WB)PLLICX29,IC801CD MECHA.(KSM213)RDS IC (E/TTYPE)(BU1923F)KEYREMOTEENCODERKEY1,2X14,A501X14,S516Vaccume FluorescentDisplay (HNA-14MS07T)Voltage00.891.552.002.613.023.473.955.00RangeKey 1ON/AUXTUNERSKIPSTOPCDSKIPCD(off)(Pin 5)STANDBYDOWNPLAYUPOPENKey 2RECSETMODEO.T.E.TAPEREPEATSOUND(off)(Pin 6)PLAY5. Microcomputer : MN101C51FGB(X29,IC701)5-1 Microcomputer Periphery Block DiagramKey Matrix VREF =5.0VRXD-M55-H/M55-N/M55-S/M55E-H/M55E-N/M55E-S9CIRCUIT DESCRIPTIONPin No.Pin NameI/OPin DescriptionActiveHL1VREF-Power supply (-) for A/D converter.2PHIDeck reel sensor input.3TN TYPEIDiscrimination of tuner destination.4SLEVELIRDS signal level input. (E/T version only)5,6KEY1,KEY2IA/D key (1, 2) input.7ALEVELIUnused.8THIUnused.9CD PROTECTIDetection pin of CD protection.10VREF+-A/D reference voltage input of the A/D converter.11VDDIPin for power supply (+5V).12OSC2OMain clock output (8.388MHz).13OSC1IMain clock input (8.388MHz).14VSS-Connected to be ground.15XIITimer clock input (32.768kHz).16XOOTimer clock output (32.768kHz).17MMOD-Connected to be ground.18SDIOData output to FL driver.19SDOIData input from FL driver.20SCLKOClock output to FL driver.21MLDOCD DSP command load signal output.Load22SUBQICD sub code input.23SQCKOCD sub code clock output.24CL SWIInput pin of close switch for CD tray.Closed25RESETIReset signal input for microcomputer.Reset26CEIBack up detection input.AC OnAC Off27OP SWIInput pin of open switch for CD tray.Opened28CD POWEROON/OFF control pin for CD DSP power.ONOFF29XRSTOCD DSP reset output.Reset30SLT SWICD start limit switch input. “L“ : Start Limit Position31REM CONTROLIRemote control signal input.32NO USE-Unused.33RDSCLKIRDS clock input. (E/T version only)34CE2IDetection pin of voltage drop.35CD BLKCKISub code block clock input.36MDATAOCD DSP command data output.37STATICD DSP status signal input.38MCLKOCD DSP command clock signal output.39CLOSEOControl pin of CD tray motor.40OPENOControl pin of CD tray motor.41HP IIDetection pin for headphones jack.Detected42FLASH UC 1IPower supply for flash ROM.43FLASH UC 2IPower supply for flash ROM.44EVOL CEOChip enable output of electronic volume (X29, IC601).45EVOL.CLKOClock output of electronic volume (X29, IC601).46EVOL.DATAOData output of electronic volume (X29, IC601).47POWER RLYOPower relay control.ON48,49N.C.-Unused.50FLASH WRITEIUnused.51N.C.-Unused.52PLL CLKOPLL IC clock output.53PLL DO/STIPLL IC data input.54PLL DATOPLL IC data output.55PLL CEOPLL IC chip enable output.5-2 Port Description of MicrocomputerRXD-M55-H/M55-N/M55-S/M55E-H/M55E-N/M55E-S10CIRCUIT DESCRIPTIONPin No.Pin NameI/OPin Description1BCLK-Unused.2LRCK-Unused.3SRDATA-Unused.4DVDD1-Digital power supply.5DVSS1-Digital ground.6TXODigital Out output.7MCLKICPC command clock signal input.8MDATAICPU command data signal input.9MLDICPU command load signal input. “L“ : Load10SENSE-Unused.11FLOCK-Unused.12TLOCK-Unused.13BLKCKOSub code block clock output.14SQCKISub code Q data clock input pin.15SUBQOSub code Q data signal output pin.16DMUTE-Connected to be ground.17STATOStatus signal output.18RSTIReset signal input.19SMCK-Clock signal output (unused).20PMCK-Clock signal output (unused).21TRVOTraverse stop signal output.22TVDOTraverse control pin.23PCOSpindle motor on signal output.24ECMOControl signal output for spindle motor.25ECSOControl signal output for spindle motor.Pin No.Pin NameI/OPin DescriptionActiveHL56SDISD detector input.Detected57TU MUTEOTuner mute control.Mute ON58PLAY SWIDetection switch input of head position for deck.Playback59REC R SWIDeck reverse recording switch input.OFFON60REC F SWIDeck forward recording switch input.OFFON61HALF SWICassette half switch input.Detected62BEAT COON/OFF control pin of beat cancel for deck.ONOFF63R/PODeck recording & playback changeover.RecordingPlayback64BIASOON/OFF control pin of bias for deck.ONOFF65A/B-1ODeck recording mute & head select control 1.66A/B-2ODeck recording mute & head select control 2.67MUTEODeck line mute control.ON68CPMOControl pin of capstan motor for deck.69SOLOControl pin of solenoid for deck.70RDS DATAIRDS data input. (E/T version only)71PROTECTIDetection pin of the protection for power supply.72AMUTEOAudio mute output.73SP RLYOOn/off control pin for speaker relay.74EEP SDAI/OEEPROM data input/output.75EEP SCLOEEPROM clock output.76,77ENC A,BIVolume encoder (X14, S516) signal inpu