Kenwood-RXDM-32-MD-Service-Manual电路原理图.pdf

70%MICRO HiFi COMPONENT SYSTEMRXD-M32MDSERVICE MANUAL(HM-382MD)©2000-5/B51-5620-00 (K/K) 2335downstandby/timer TAPECD 00AUTO REVERSE CASSETTE DECKHM-382MDphonesCD6MD6TAPE23STOPvolume/multi control70MDMDrecTAPErecTUNER/bandupAUXsound4¢menuset/demoTEXTDIGITAL AUDIODIGITAL AUDIOCOMPACTCOMPACTKnob(K29-7780-08)Panel(A29-1099-08)Front glass (B10-3591-08)Indicator(B12-0396-08)Dressing panel *(A21-)*Refer to parts list on page 46. Escutcheon(B07-2517-08)Knob(K29-7789-08)Panel(A29-1097-08)Knob *(K29-)Indicator(B12-0397-08)Miniature phone jack(E11-0200-05)In compliance with Federal Regulations, following are repro-ductions of labels on, or inside the product relating to laserproduct safety.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 BEAMFM (T90-0861-05)indoor antenna (1)AM (T90-0852-05)loop antenna (1)Remote control unit (1)Batteries AC plug adaptor (1)(E03-0115-05)(R6/AA) (2)Europe Battery cover(A09-1161-08)and U.KOther countriesRXD-M32MD2CONTENTS / ACCESSORIES / CAUTIONSCONTENTS / ACCESSORIES / CAUTIONS.2EXTERNAL VIEW.3DISASSEMBLY FOR REPAIR.3CIRCUIT DESCRIPTION.3ADJUSTMENT.15PC BOARD.18SCHEMATIC DIAGRAM.25EXPLODED VIEW.43PARTS LIST.46SPECIFICATIONS.Back coverContentsAccessoriesCautions Remocon configuration System configurationOperation to resetThe microcomputer may fall into malfunction (impossibil-ity 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,while holding the set/demo key depressed, plugthe power cord again.Please note that resetting the microcomputer clearsthe contents stored in and it returns to condition whenit left the factory.downstandby/ timer TAPECD 00SH-3MDphonesCD6MD6TAPE2 3STOPvolume/multi control7STOP70MDMDrecTAPErecTUNER/bandupTEXTTEXTDIGITAL AUDIODIGITAL AUDIOCOMPACTCOMPACTREMOTE CONTROLLERMODEL NAMEMODELDESTINATIONSCOLORA70-1375-08RC-M0100RXD-M32MD-SM(S)WHITEA70-1376-08RC-M0100ERXD-M32MD-S/LTHEWHITEA70-1393-08RC-M0100RXD-M32MD-M1(Y)YELLOWA70-1416-08RC-M0100RXD-M32MD-MX(L, LS)BLUESYSTEMMAIN UNITDESTINATIONSPEAKERCOLORHM-382MD-LRXD-M32MD-LHMX(L)LS-M32-LBLUEHM-382MD-SRXD-M32MD-SETHM(S)LS-M32-SSILVERHM-382MD-YRXD-M32MD-YM1(Y)LS-M32-YYELLOWHM-382MD-LSRXD-M32MD-LSHMX(LS)LS-M32-LSSKY BLUERXD-M32MD3EXTERNAL VIEWLRAUXINSPEAKERS(616)GND AMANTENNAFM75+-LRLock terminal board (E70-0052-05) or(E20-0321-05)Cover *(F07-)Top plate(A52-0387-08)Pin jack(E63-0095-05)Side plate R *(A50-)Side plate L *(A50-)Lock terminal board (E70-0053-05)AC power cord bushing(J42-0083-05)AC power cord *(E30-)FRONTCAMCAMHow to open the tray if not comes out.(1) From the bottom side of the CD mechanism, use ascrew driver or the like to turn the cam slightly coun-terclockwise.(2) Pull out the tray front wards by hand when the traycomes just out.DISASSEMBLY FOR REPAIR*Refer to parts list on page 46. RXD-M32MD4CIRCUIT DESCRIPTIONReceiving FrequencyChannelSetTypeBANDRangeSpaceIFRFJJFM76.0MHz90.0MHz100kHz-10.7MHz25kHzAM531kHz1629kHz9kHz+450Khz9kHzK,PK1FM87.5MHz108.0MHz100kHz+10.7MHz25kHzAM530kHz1700kHz10kHz+450kHz10kHzK2FM87.5MHz108.0MHz100kHz+10.7MHz25kHzAM530kHz1610kHz10kHz+450kHz10kHzM,YE1FM87.5MHz108.0MHz50kHz+10.7MHz25kHzAM531kHz1602kHz9kHz+450kHz9kHzXE1FM87.5MHz108.0MHz50kHz+10.7MHz25kHzAM531kHz1602kHz9kHz+450kHz9kHzE,TE1FM87.5MHz108.0MHz50kHz+10.7MHz25kHzRDSAM531kHz1602kHz9kHz+450kHz9kHzTYPER292 VOLTAGE VJ910k4.505K220k3.438M1100k2.500X47k1.600E,T12k0.536ITEMSSTATEREMARKSPOWEROFFBACK LIGHTHighVOLUME10BALANCECENTERAMPBASS0TREBLE0EX.BASSONLOUDNESSOFFINPUT SEL TUNERINPUT LEVEL0BANDFMLAST freq.LOWEST FREQ.TUNERLAST Preset- -ChannelAUTO/MONOAUTOPreset ChannelTEST FREQ.CLOCKAM 12:00E,T type 24HPROG ONAM 12:00E,T type 24H(TIME)CLOCKPROG OFFAM 12:00E,T type 24HTIMER(TIME)SOURCETUNERPreset Channel1EXE MODEOFFOTT MODEOFFAM 7:00ASPOFFSLEEPOFFDIRECTIONFORWARDRVS MODEREVERSEDECKTAPE EQOFFOPERATIONSTOPMODEPLAY MODETRACKREPEATOFFCDRANDOMOFFOPERATIONSTOPMODEPLAY MODETRACKNONEMDREPEATOFFNONERANDOMOFFNONEOPERATIONSTOPNONEMODE1. Initialization1-1 Setting of the Initial ConditionsWhile pressing the (STOP) key, plug the AC cord to ACwall outlet.1-2 Initializing OperationA microcomputer is initialized for start when the ACpower is turned on while pressing the STOP key.At that time, CD,MD and CASSETTE mechanisms arealso initialized.During the initial conditions, the display shows “INI-TIALIZE“ and after that it will be returned to standbyconditions.1-3 Initial Items1-4-3 MD mechanismIf a mechanism error occurs, “M“ is indicated on thedisplay.MD disc is ejected from MD mechanism.1-4-4If mechanisms (CD/DECK/MD) error occur, the displayis indicated as follows. CMXSERR1-4-5 TAPE door switch diagnosisIf switches (open/close) error occur, “S“ is indicated onthe display.1-4 Mechanism Initialization1-4-1 CD MechanismIf a mechanism error occurs, “C“ is indicated on the dis-play.1-4-2 DECK mechanismWhen the initial condition becomes NG for the thirdtime, decide the error.The error condition is displayed as “X“ on the display.2-1 Discrimination Port for DestinationAVdd = 5.0 v 2. Destination List of TunerAVddR291100kR292U-COM95pin(TYPE)AUX MODEAUX Key+AC-ONTUNER MODETUNER (BAND) Key+AC-ONTAPE MODETAPE PLAY Key+AC-ONCD MODECD PLAY Key+AC-ONMD UNIT MODEMD PLAY key + AC ON(MD version only)MD MECHA. MODEMD REC key +AC-ON3. Test Mode3-1 Setting of the Test ModeTAPE REC Key+AC-ONThe oscillation diagnosis(existenceof oscillation and measurement ofperiod) of a sub clock is performedbefore the test mode is entered. Ifthe diagnosis result is OK, the sys-tem enters the test mode. If thediagnosis result is NG, the oscilla-tion of the sub clock is diagnosedagain. If the result is OK, the sys-tem enters the test mode. If thediagnosis result is continuously NG5 times,the system stops with“ERR1“ and “ERR2“ displayed.SUB CLOCK OSCDIAGNOSISKEYDISPLAYOPERATIONCD-PLAY/PAUSE05 : ( : )Tracking-servo on.(Change the mode 05 and 0303 -:-Tracking-servo off.alternately by the stop key.)CD STOP01 -:-STOPAdjustment value/mean value(Cyclically changed in the07 / TB valueFB valuestop mode only.)08 / TG valueFG value09 / FE valueRF value10 / TE valueVC valueMENUHI-SPEEDCD double speed operationNOR-SPEEDCD normal speed operationSKIP UPEx.0102CD track no. up.TAPERECCD FF search.The pickup travels outward in the stop mode.SKIP DOWNEx.0201CD track no. down.MD RECCD FB search.The pickup travels inward in the stop mode.KeyDisplayDescriptionSTOP001:Stop the MD operation.SKIP UPEX : 01-02MDs track up operation.SKIP DOWNEX : 02-01MDs track down operation.SET/demoALL ERASEStop the MD operation.Start operation of all erase if disc is recordable.RXD-M32MD5CIRCUIT DESCRIPTIONKEYDISPLAYOPERATIONSTOPNormal indicationP -P10 P20 P30 P40 MENUAUTOSTEREOïNormal indicationMANUALMONOóMD RECTUNING DOWNTAPE RECNormal indicationTUNING UPSKIP DOWNP. chDOWNSKIP UPNormal indicationP. chUPKEYDISPLAYOPERATIONIf the REC/ARM key is pressed, the system record for 4 seconds.Then, it rewinds to the REC starting position and plays backTAPE RECNormal displayautomatically. If the REC/ARM key is pressed, during the4 seconds REC operation,the system records further for 4 seconds, then returns to the starting positionof the first 4 seconds REC operation and plays back.KEYDISPLAYOPERATIONToneMAXSET/demoToneMAXCENTER MAX MIN ToneCENTERSKIP UPNormal indicationEXBASSONLOUDNESS ONSOUND MODE OFF3-2 Cancel of the test modeBy turning the power off, the system is initialized and the test mode is canceled.3-3 Contents of the Test Mode3-3-1 Tuner Test mode3-3-2 Aux Test Mode3-3-3 Deck Test Mode3-3-4 CD Test ModeThe CD tray is opened automatically when the test mode is entered.4. MD Test Mode4-1 MD Unit ModeRXD-M32MD6CIRCUIT DESCRIPTIONRepair(replace)TemperatureStandard SetEEPROM setvalue checkAuto pre adjAuto adjAuto Fab adj*EEPROM data write* Operation checkTEMPEEPROM_SETAUTO_YOBIAUTO_ADJAUTO_FABCANCEL TEST MODETEST-PLAYTEST-RECpickup-1234567recording head-1mechanism-1234567pcb parts12345678MD microprocessor-1-234MD LSI-123456RF IC12345678EEPROM123456781. Preparation for AdjustmentYou have to carry out the following test mode items if replace MD mechanism, pickup, head and pc board.1-1 Procedure1. Short-circuit #4(vss) and #7(wp) of IC1402(EEPROM).2. Set the unit to test mode and carry out the every adjustment in test mode.3. Stop the test mode by pressing the STOP key for 3 secs4. Remove the short circuit of IC1402. Carry out reset start.note: figures order of steps. - = no need.* Result of EEPROMOK_EEPROMWrite the data of setting values and AUTO-pre adjustment perfectly.WR_EEPROMWrite the data of setting values perfectly however not write AUTO pre-adjustment.Carry out AUTO-pre adjustment and write data to EEPROM.NG_EEPROMNot write the data of setting values.Check the connection of MD microprocessor and EEPROM.* Carry out the TEST-PLAY , TEST-REC and C1 error in test mode after AUTO_ADJ and AUTO_FAB. 2. Test Mode1. Holding down the MD rec button and turn the power on. (State A)2. To enter the test mode stop state(State B), press the STOP button.3. Load the playback disc 1(high reflection disc) or recording disc 2(low reflection disc).AMD TESTó(Press STOP key)Btsm e- TEST MODE STOP STATE represents version of MD microcomputeró(MD DISC LOAD IN)CLOADINGóDAUT YOBI4-2 MD SECTION1-2 Test discTypeTest disc1High reflection discTGYS1 (SONY)2Low reflection discRecording minidisc3Head Adjusting transparentEntering the specific modeWhenever the button SKIP DOWNis pressed, the mode is changed.AUTO (AUT YOBI)(AUTO AJST)(AUT FAB)(RST YOBI)(RESULT)(MNU YOBI)(EEPROM SET)(MNU AJST)pre-adjustmentAUTO adjustmentRESULT SUBRESULTEEPROM settingMANUAL adjustmentMANUAL pre-adjustmentAUT(When the STOP button is pressed in the Dstate, the indication Bstate isrestored.To restore Dstate again, press the SKIP DOWN key once.RXD-M32MD7CIRCUIT DESCRIPTIONCanceling the test modeWhen the POWER button is pressed, the test mode is canceled, and the POWER OFF state is set.Test Mode1. AUTO pre-adjustment modeAutomatic pre-adjustment is performed. (After adjustment the grating adjustment mode is set.)The adjustment value is output with the aid of system controller interface.2. AUTO adjustment modeAutomatic adjustment is performed.The adjustment value is output with the aid of system controller interface.Continuous playback is performed. (Error rate indication, jump test)4. RESULT sub-modeThe measurement value, set value and calculated value are indicated.The set value is changed manually (in servo OFF state).3. AUTO FOCUS BIAS adjustmentFocus bias adjustment is performed auto matically.5. RESULT mode (final adjustment)The set value (after calculation) is indicated.The set value is changed manually (in servo OFF state).6. MANUAL pre-adjustment modeRF side manual adjustment is performed.Focus and tracking signal ATT manual adjustment is performed.Focus and tracking signal offset setting is performed.7. MANUAL adjustment modeFocus and tracking signal ATT manual adjustment is performed.8. EEPROM setting modeEEPROM setting9. TEST-PLAY modeContinuous playback from the specified address is performed.C1 error rate measurement.10. TEST-REC modeContinuous recording from the specified address is performed.Change of record laser output (servo gain is also changed according to laser output)11. EJECT modeTEMP setting (of EEPROM setting)1. AUTO pre-adjustment mode (Low reflection disc only)Step No.Setting MethodRemarksDisplayStep 1Test mode STOP state t s me Step 2Press once the SKIP DOWN( ) button.AUTO pre-adjustment menu AUT_YOBI_Step 3Press once the MD PLAY button.The slide moves to the innermost periphery, and automatic : _ _ _ _ _ _ _ pre-adjustment is started.During automatic adjustment changes as follows.HAoRFgSAgSBgPTGPCHGTGGCHRCGSEGRFGSAGHAOHEOTCOLAOEnd of adjustmentIf adjustment is OK, Step 4.If adjustment is NG, Step 5.Step 4Grating adjustment, _ C O M P L E T E _ adjustment value outputPress once the MD STOP button.STEP 2Step 5Adjustment value output AUTYOBI Press once the MD STOP button.STEP 2 AUTO pre-adjustment menu: Adjustment name, : Address2. AUTO adjustment modeStep No.Setting MethodRemarksDisplayStep 1Test mode STOP state t s me Step 2Press the SKIP DOWN( ) button two times.AUTO adjustment menu A U T O _ A J S T _ Step 3Press once the MD PLAY button.The slide moves to the innermost periphery, and automatic : _ _ _ _ _ _adjustment is started.In case of high reflection disc changes as follows.PEGHAGcase of low reflection disc changes as follows.PEGLAGGCGGEGLAGEnd of adjustmentIf adjustment is OK, Step 4.If adjustment is NG, Step 7.Step 4Adjustment value output C O M P L E T E Press the MD PLAY button.STEP 5Press the MD STOP button.STEP 2Step 5Continuous playback (groove section) acStep 6Press the MD STOP button.STEP 2 AUTO adjustment menuStep 7Adjustment value output C a n ' t _ A D J . Press the MD STOP button.STEP 2 AUTO adjustment menu: Adjustment name, : Measurement value, : AddressRXD-M32MD8CIRCUIT DESCRIPTION3.AUTOFAB adjusting modeStep No.Setting MethodRemarksDisplayStep 1Test mode STOP stateStep 2Press the SKIP DOWN( )button three timesAUTOFAB adjustment menu_AUT_FAB_ _Step 3Press the MD PLAY button 1 timeEnd of automatic adj.step 4High reflection disc step 5Step 4Press the MD STOP buttonAUTOFAB adjustment menu, step 2Step 5Message output for 1 sec.AUTOFAB.Adjustment menu(high reflection disc):measurement value :FAB value in measurement, :C1 error value in measurement, :FAB valueIf the STOP button is pressed twice while the AUTOFAB adjustment is displayed, the state is change to the TEST mode STOP state.Step 1Test mode STOP state t s me Step 2Press the SKIP DOWN(4)button 4 times.RESULT sub-menu_ R S T _ Y O B I _ Step 3Press once the MD PLAY button.Indication of measurement value R F G : _ _ _Step 4Press once the SKIP DOWN(4) button. Indication of measurement value R C G : _ _ _Step 5Press once the SKIP DOWN(4) button. Indication of measurement value P T G : _ _Step 6Press once the SKIP DOWN(4) button. Indication of measurement value G T G : _ _Step 7Press once the SKIP DOWN(4) button. Indication of measurement value P