Kenwood-HM-382-MD-Service-Manual 电路图 维修手册.pdf

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1、70% MICRO HiFi COMPONENT SYSTEM RXD-M32MD SERVICE MANUAL (HM-382MD) 2000-5/B51-5620-00 (K/K) 2335 down standby / timer TAPE CD 0 0 AUTO REVERSE CASSETTE DECK HM-382MD phones CD 6 MD 6 TAPE 2 3 STOP volume/ multi control 7 0 MDMD recTAPE recTUNER/band up AUXsound4menuset/demo TEXTTEXT DIGITAL AUDIODI

2、GITAL AUDIO COMPACTCOMPACT Knob (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 (E1

3、1-0200-05) In compliance with Federal Regulations, following are repro- ductions of labels on, or inside the product relating to laser product safety. KENWOOD-Crop. certifies this equipment conforms to DHHS Regulations No. 21 DFR 1040. 10, Chapter 1, Subchapter J. DANGER : Laser radiation when open

4、and interlock defeated. AVOID DIRECT EXPOSURE TO BEAM RadioFans.CN 收音机爱 好者资料库 FM (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 countries RXD-M32MD 2 CON

5、TENTS / ACCESSORIES / CAUTIONS CONTENTS / ACCESSORIES / CAUTIONS. 2 EXTERNAL VIEW.3 DISASSEMBLY FOR REPAIR.3 CIRCUIT DESCRIPTION.3 ADJUSTMENT.15 PC BOARD . 18 SCHEMATIC DIAGRAM .25 EXPLODED VIEW .43 PARTS LIST.46 SPECIFICATIONS .Back cover Contents Accessories Cautions Remocon configuration System c

6、onfiguration Operation to reset The microcomputer may fall into malfunction (impossibil- ity to operate, erroneous display, etc.) when the power cord is unplugged while unit is ON or due to an external factor. In this case, execute the following procedure to reset the microcomputer and return it to

7、normal condi- tion. Unplug the power cord from the power outlet then, while holding the set/demo key depressed, plug the power cord again. Please note that resetting the microcomputer clears the contents stored in and it returns to condition when it left the factory. down standby / timer TAPE CD 0 0

8、 SH-3MD phones CD 6 MD 6 TAPE 2 3 STOP volume/ multi control 7 STOP 7 0 MDMD recTAPE recTUNER/band up TEXTTEXT DIGITAL AUDIODIGITAL AUDIO COMPACTCOMPACT REMOTE CONTROLLERMODEL NAMEMODELDESTINATIONSCOLOR A70-1375-08RC-M0100RXD-M32MD-SM(S)WHITE A70-1376-08RC-M0100ERXD-M32MD-S/LTHEWHITE A70-1393-08RC-M

9、0100RXD-M32MD-M1(Y)YELLOW A70-1416-08RC-M0100RXD-M32MD-MX(L, LS)BLUE SYSTEMMAIN UNITDESTINATIONSPEAKERCOLOR HM-382MD-LRXD-M32MD-LHMX(L)LS-M32-LBLUE HM-382MD-SRXD-M32MD-SETHM(S)LS-M32-SSILVER HM-382MD-YRXD-M32MD-YM1(Y)LS-M32-YYELLOW HM-382MD-LSRXD-M32MD-LSHMX(LS)LS-M32-LSSKY BLUE RadioFans.CN 收音机爱 好者

10、资料库 RXD-M32MD 3 EXTERNAL VIEW L R AUX IN SPEAKERS(616) GND AM ANTENNA FM 75 + - LR Lock 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

11、-0083-05) AC power cord * (E30-) FRONT CAM CAM How to open the tray if not comes out. (1) From the bottom side of the CD mechanism, use a screw driver or the like to turn the cam slightly coun- terclockwise. (2) Pull out the tray front wards by hand when the tray comes just out. DISASSEMBLY FOR REPA

12、IR * Refer to parts list on page 46. RadioFans.CN 收音机爱 好者资料库 RXD-M32MD 4 CIRCUIT DESCRIPTION Receiving Frequency Channel SetType BAND RangeSpace IFRF JJ FM76.0MHz90.0MHz100kHz-10.7MHz25kHz AM531kHz1629kHz9kHz+450Khz9kHz K,PK1 FM87.5MHz108.0MHz100kHz+10.7MHz 25kHz AM530kHz1700kHz10kHz+450kHz10kHz K2

13、FM87.5MHz108.0MHz100kHz+10.7MHz 25kHz AM530kHz1610kHz10kHz+450kHz10kHz M,Y E1 FM87.5MHz108.0MHz50kHz+10.7MHz 25kHz AM531kHz1602kHz9kHz+450kHz9kHz XE1 FM87.5MHz108.0MHz50kHz+10.7MHz 25kHz AM531kHz1602kHz9kHz+450kHz9kHz E,T E1FM87.5MHz108.0MHz50kHz+10.7MHz 25kHz RDSAM531kHz1602kHz9kHz+450kHz9kHz TYPE

14、R292 VOLTAGE V J910k4.505 K220k3.438 M1100k2.500 X47k1.600 E,T12k0.536 ITEMSSTATEREMARKS POWEROFF BACK LIGHTHigh VOLUME10 BALANCECENTER AMPBASS0 TREBLE0 EX.BASSON LOUDNESSOFF INPUT SEL TUNER INPUT LEVEL0 BANDFM LAST freq.LOWEST FREQ. TUNERLAST Preset- - Channel AUTO/MONOAUTO Preset ChannelTEST FREQ.

15、 CLOCKAM 12:00E,T type 24H PROG ONAM 12:00E,T type 24H (TIME) CLOCKPROG OFFAM 12:00E,T type 24H TIMER(TIME) SOURCETUNER Preset Channel1 EXE MODEOFF OTT MODEOFFAM 7:00 ASPOFF SLEEPOFF DIRECTIONFORWARD RVS MODEREVERSE DECKTAPE EQOFF OPERATIONSTOP MODE PLAY MODETRACK REPEATOFF CDRANDOMOFF OPERATIONSTOP

16、 MODE PLAY MODETRACKNONE MDREPEATOFFNONE RANDOMOFFNONE OPERATIONSTOPNONE MODE 1. Initialization 1-1 Setting of the Initial Conditions While pressing the (STOP) key, plug the AC cord to AC wall outlet. 1-2 Initializing Operation A microcomputer is initialized for start when the AC power is turned on

17、while pressing the STOP key. At that time, CD,MD and CASSETTE mechanisms are also initialized. During the initial conditions, the display shows INI- TIALIZE and after that it will be returned to standby conditions. 1-3 Initial Items 1-4-3 MD mechanism If a mechanism error occurs, M is indicated on t

18、he display. MD disc is ejected from MD mechanism. 1-4-4 If mechanisms (CD/DECK/MD) error occur, the display is indicated as follows. CMXSERR 1-4-5 TAPE door switch diagnosis If switches (open/close) error occur, S is indicated on the display. 1-4 Mechanism Initialization 1-4-1 CD Mechanism If a mech

19、anism error occurs, C is indicated on the dis- play. 1-4-2 DECK mechanism When the initial condition becomes NG for the third time, decide the error. The error condition is displayed as X on the display. 2-1 Discrimination Port for Destination AVdd = 5.0 v 2. Destination List of Tuner AVdd R291 100k

20、 R292 U-COM 95pin (TYPE) AUX MODEAUX Key+AC-ON TUNER MODETUNER (BAND) Key+AC-ON TAPE MODETAPE PLAY Key+AC-ON CD MODECD PLAY Key+AC-ON MD UNIT MODE MD PLAY key + AC ON (MD version only) MD MECHA. MODEMD REC key +AC-ON 3. Test Mode 3-1 Setting of the Test Mode TAPE REC Key+AC-ON The oscillation diagno

21、sis(existence of oscillation and measurement of period) of a sub clock is performed before the test mode is entered. If the diagnosis result is OK, the sys- tem enters the test mode. If the diagnosis result is NG, the oscilla- tion of the sub clock is diagnosed again. If the result is OK, the sys- t

22、em enters the test mode. If the diagnosis result is continuously NG 5 times,the system stops with ERR1 and ERR2 displayed. SUB CLOCK OSC DIAGNOSIS KEYDISPLAYOPERATION CD-PLAY/PAUSE05 : ( : )Tracking-servo on. (Change the mode 05 and 0303 -:-Tracking-servo off. alternately by the stop key.) CD STOP01

23、 -:-STOP Adjustment value/mean value (Cyclically changed in the07 / TB valueFB value stop mode only.)08 / TG valueFG value 09 / FE valueRF value 10 / TE valueVC value MENU HI-SPEEDCD double speed operation NOR-SPEEDCD normal speed operation SKIP UPEx.0102CD track no. up. TAPE REC CD FF search. The p

24、ickup travels outward in the stop mode. SKIP DOWNEx.0201CD track no. down. MD REC CD FB search. The pickup travels inward in the stop mode. KeyDisplayDescription STOP001:Stop the MD operation. SKIP UPEX : 01-02MDs track up operation. SKIP DOWNEX : 02-01MDs track down operation. SET/demoALL ERASEStop

25、 the MD operation. Start operation of all erase if disc is recordable. RXD-M32MD 5 CIRCUIT DESCRIPTION KEYDISPLAYOPERATION STOPNormal indicationP -P10 P20 P30 P40 MENUAUTOSTEREO Normal indicationMANUALMONO MD RECTUNING DOWN TAPE RECNormal indicationTUNING UP SKIP DOWNP. chDOWN SKIP UPNormal indicati

26、onP. chUP KEYDISPLAYOPERATION If the REC/ARM key is pressed, the system record for 4 seconds. Then, it rewinds to the REC starting position and plays back TAPE RECNormal displayautomatically. If the REC/ARM key is pressed, during the 4 seconds REC operation,the system records further for 4 seconds,

27、then returns to the starting position of the first 4 seconds REC operation and plays back. KEYDISPLAYOPERATION ToneMAX SET/demoToneMAXCENTER MAX MIN ToneCENTER SKIP UPNormal indicationEXBASSONLOUDNESS ONSOUND MODE OFF 3-2 Cancel of the test mode By turning the power off, the system is initialized an

28、d the test mode is canceled. 3-3 Contents of the Test Mode 3-3-1 Tuner Test mode 3-3-2 Aux Test Mode 3-3-3 Deck Test Mode 3-3-4 CD Test Mode The CD tray is opened automatically when the test mode is entered. 4. MD Test Mode 4-1 MD Unit Mode RXD-M32MD 6 CIRCUIT DESCRIPTION Repair(replace) Temperature

29、 Standard Set EEPROM set value check Auto pre adjAuto adjAuto Fab adj*EEPROM data write* Operation check TEMPEEPROM_SET AUTO_YOBI AUTO_ADJ AUTO_FABCANCEL TEST MODE TEST-PLAY TEST-REC pickup-1234567 recording head-1 mechanism-1234567 pcb parts12345678 MD microprocessor-1-234 MD LSI-123456 RF IC123456

30、78 EEPROM12345678 1. Preparation for Adjustment You have to carry out the following test mode items if replace MD mechanism, pickup, head and pc board. 1-1 Procedure 1. 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

31、. Stop the test mode by pressing the STOP key for 3 secs 4. Remove the short circuit of IC1402. Carry out reset start. note: figures order of steps. - = no need. * Result of EEPROM OK_EEPROMWrite the data of setting values and AUTO-pre adjustment perfectly. WR_EEPROMWrite the data of setting values

32、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.

33、 Test Mode 1. 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 TEST (Press STOP key) Btsm e- TEST MODE STOP STATE repre

34、sents version of MD microcomputer (MD DISC LOAD IN) CLOADING DAUT YOBI 4-2 MD SECTION 1-2 Test disc TypeTest disc 1High reflection discTGYS1 (SONY) 2Low reflection discRecording minidisc 3Head Adjusting transparent Entering the specific mode Whenever the button SKIP DOWNis pressed, the mode is chang

35、ed. AUTO (AUT YOBI)(AUTO AJST)(AUT FAB)(RST YOBI)(RESULT) (MNU YOBI)(EEPROM SET)(MNU AJST) pre-adjustmentAUTO adjustmentRESULT SUBRESULT EEPROM settingMANUAL adjustmentMANUAL pre-adjustment AUT (When the STOP button is pressed in the D state, the indication B state is restored. To restore D state ag

36、ain, press the SKIP DOWN key once. RXD-M32MD 7 CIRCUIT DESCRIPTION Canceling the test mode When the POWER button is pressed, the test mode is canceled, and the POWER OFF state is set. Test Mode 1. AUTO pre-adjustment mode Automatic pre-adjustment is performed. (After adjustment the grating adjustmen

37、t mode is set.) The adjustment value is output with the aid of system controller interface. 2. AUTO adjustment mode Automatic 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. R

38、ESULT sub-mode The measurement value, set value and calculated value are indicated. The set value is changed manually (in servo OFF state). 3. AUTO FOCUS BIAS adjustment Focus bias adjustment is performed auto matically. 5. RESULT mode (final adjustment) The set value (after calculation) is indicate

39、d. The set value is changed manually (in servo OFF state). 6. MANUAL pre-adjustment mode RF 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 mode Focus and tracking signal AT

40、T manual adjustment is performed. 8. EEPROM setting mode EEPROM setting 9. TEST-PLAY mode Continuous playback from the specified address is performed. C1 error rate measurement. 10. TEST-REC mode Continuous recording from the specified address is performed. Change of record laser output (servo gain

41、is also changed according to laser output) 11. EJECT mode TEMP setting (of EEPROM setting) 1. AUTO pre-adjustment mode (Low reflection disc only) Step No.Setting MethodRemarksDisplay Step 1Test mode STOP state t s m e Step 2Press once the SKIP DOWN( ) button.AUTO pre-adjustment menu AUT_ YOBI_ _ _ S

42、tep 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. HAoRFgSAgSBgPTGPCHGTGGCHRCG SEGRFGSAGHAOHEOTCOLAO End of adjustmentIf adjustment is OK, Step 4. If adjustment is NG,

43、 Step 5. Step 4Grating adjustment, _ C O M P L E T E _ adjustment value output Press once the MD STOP button. STEP 2 Step 5Adjustment value output AUT YOBI Press once the MD STOP button. STEP 2 AUTO pre-adjustment menu : Adjustment name, : Address 2. AUTO adjustment mode Step No.Setting MethodRemark

44、sDisplay Step 1Test mode STOP state t s m e 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 change

45、s as follows. PEGHAG case of low reflection disc changes as follows. PEGLAGGCGGEGLAG End 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 5 Press the MD STOP button.STEP 2 Step 5Continuous playback (gro

46、ove section) ac Step 6Press the MD STOP button.STEP 2 AUTO adjustment menu Step 7Adjustment value output C a n t _ A D J . Press the MD STOP button.STEP 2 AUTO adjustment menu : Adjustment name, : Measurement value, : Address RXD-M32MD 8 CIRCUIT DESCRIPTION 3. AUTO FAB adjusting mode Step No.Setting

47、 MethodRemarksDisplay Step 1Test mode STOP state Step 2Press the SKIP DOWN( ) button three timesAUTO FAB adjustment menu_AUT_FAB_ _ Step 3Press the MD PLAY button 1 timeEnd of automatic adj. step 4 High reflection disc step 5 Step 4Press the MD STOP buttonAUTO FAB adjustment menu, step 2 Step 5Messa

48、ge output for 1 sec. AUTO FAB. Adjustment menu(high reflection disc) : measurement value : FAB value in measurement, : C1 error value in measurement, : FAB value If the STOP button is pressed twice while the AUTO FAB adjustment is displayed, the state is change to the TEST mode STOP state. Step 1Test mode STOP