Kenwood-HM-531-Service-Manual 电路图 维修手册.pdf

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1、(HM-531/581MD) MICRO HiFi COMPONENT SYSTEM RXD-M51/M51MD SERVICE MANUAL 1998-9/B51-5477-00 (K/K) 2138 Refer to DM-3090 service manual(B51-5396-00), if require the following items in detail. 1) MD mechanism(MDM-98A) disassembly for repair (page5,6) 2) Semiconductor description IC1101:RF signal contro

2、l(page9) IC1201:ENDEC/ATRAC(page10,11) IC1401:system microcomputer(page 12,13) Caution : No connection of ground line if disassemble the unit. Please connect the ground line on rear panel, PCBs, Chassis and some others. KENWOOD-Crop. certifies this equipment conforms to DHHS Regulations No. 21 DFR 1

3、040. 10, Chapter 1, Subchapter J. DANGER : Laser radiation when open and interlock defeated. AVOID DIRECT EXPOSURE TO BEAM Illustration is RXD-M51MD. * Refer to parts list on page 49. MD 6 TUNER micro hi-fi component systemAuto Reverse AUX push OPEN MD rec DISC LOADING MECHANISM TAPE/preset band 1BI

4、T DUAL D/A CONVERTER TAPE rec remote TAPE direction set/demo menu repeat sound standby/timer on/standby 3 d o w n u p 2 V O L U M E / m u l t i c o n t r o l phones CD 6 74 1 0 0 23 Panel (A60-1496-11) Indicator (B12-0351-03) Knob (K29-6358-14) Knob (K29-7394-03) Front glass (B10-3419-14) Miniature

5、phone jack (E11-0344-05) Front glass (B10-3418-03) Dressing panel (A21-3707-03) Dressing panel (A21-3721-03) Knob (K29-7392-02) Panel (MD) (A29-1022-04) Knob (K29-7393-03) RXD-M51MD(K) COVER1,1P( 98.12.10 19:11 yW 2 RadioFans.CN 收音机爱 好者资料库 SYSTEMMAIN UNITDESTINATIONSPEAKERSP CORD PARTS.NO. HM-581MDR

6、XD-M51MDE1T1LS-M61E30-5500-05 HM-531RXD-M51M1E2T2LS-M51E30-5500-05 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

7、procedure to reset 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, plug the power cord again. ?Please note that resetting the microcomputer clears the contents stored in and it returns to condition w

8、hen it left the factory. set/demo Batteries (R6/AA) (2) Other countries Remote control unit (1) AM loop antenna stand (1) Speaker cords (2) Loop antenna (1) (T90-0833-05) Please confirm that the following accessories are present. FM indoor antenna (1) Europe U.K. and Russia AC plug adapter (1) Use t

9、o adapt the plug on the power cord to the shape of the wall outlet. (Accessory only for regions where use is necessary. (T90-0810-05): TE (E03-0115-05) (E30-5500-05) (A70-1236-05) : RC-M0503E Remote control unit (1) (A70-1242-05) : RC-F0503E Remote control unit (1) (A70-1241-05) : RC-F0503 (T90-0801

10、-05): M (J19-3645-05) REMOTE CONTROL UNIT RC-F0503E SLEEPTONESOUND 123TIMER 456REPEAT 789RANDOM +100PGMCLEAR DOT DISP.TIME DISP.TAPE P.CALL TAPETUNER BAND CD PTYTA/NEWSAUX SETENTERMUTE 4 2 37 % fi 6 1 POWER VOLUME O.T.E. TRACK EDIT TITLE INPUT TITLE SEARCH TIMER RANDOM CLEAR DELETEREPEAT 6 CD 6 TUNE

11、R BAND SETDOT/CHARA.TIMEENTER SLEEP 123 456 789 +100DOLBY NR QUICK MOVE TAPE PTYTA/NEWSAUX P.CALL4 2 3 PGM 1 REMOTE CONTROL UNIT RC-M0503E SOUNDTONEMDTAPE MD 7 % fi MUTE V O L U M E C O N T R O L DISPLAY O.T.E. POWER REMOTE CONTROL UNIT RC-F0503 SLEEPTONESOUND 123TIMER 456REPEAT 789RANDOM +100PGMCLE

12、AR DOT DISP.TIME DISP.TAPE P.CALL TAPETUNER BAND CD AUX SETENTERMUTE 4 2 37 % fi 6 1 POWER VOLUME O.T.E. RXD-M51/M51MD 2 CONTENTS / ACCESSORIES / CAUTION CONTENTS / ACCESSORIES / CAUTION .2 EXTERNAL VIEW/DISASSEMBLY FOR REPAIR.3 BLOCK DIAGRAM .4 CIRCUIT DESCRIPTION.5 ADJUSTMENT. 11 WIRING DIAGRAM.12

13、 PC BOARD .13 SCHEMATIC DIAGRAM .23 EXPLODED VIEW .45 PARTS LIST.49 SPECIFICATIONS .59 Accessories Caution System configuration Contents RXD-M51MD(K) COVER1,1P( 98.12.10 19:11 yW 3 RadioFans.CN 收音机爱 好者资料库 1 2 3 Phono jack (E63-1024-05) Lock terminal board (E70-0053-05) Power cord bushing (J42-0083-0

14、5) AC power cord * (E30-) Lock terminal board (E70-0052-05) RXD-M51/M51MD 3 EXTERNAL VIEW / DISASSEMBLY FOR REPAIR DISASSEMBLY FOR REPAIR Illustration is RXD-M51MD. * Refer to parts list on page 49. See the left figure, connect the SP terminal GND and the rear panel (1), the front panel GND and the

15、rear panel (2), MD mecha chassis and the rear panel (3) (except RXD-M51) with the wires connected alligator chips. EXTERNAL VIEW RXD-M51MD(K) COVER1,1P( 98.12.10 19:11 yW 6 RadioFans.CN 收音机爱 好者资料库 RXD-M51/M51MD 4 BLOCK DIAGRAM (X33) (X14) ONLY (X09) A301 (W02-) (X14) ONLY E,T TYPE (X33) (X07) RXD-M5

16、1MD RXD-M51 RXD-M51 ONLY RXD-M51MD 200mV/47k AUX IN AUX IN ATT 3dB FM AM ANT TUNER PACK ERASE R/P BIAS TRAP MPX OSC BIAS Q11,12 IC1 IC2 IC3 FE-BIAS VR201 (RF-AMP) CXA1571M IC203 CXD2587Q (DSP/DAC/CD-TEXT) IC201 (4ch BTL-DRIVER) BA5979S IC202 MECHA. CD DIGITAL OUT UPD7805BGC-A59 MD MECHA. IC1 DIGITAL

17、 IN (LEVEL SHIFT) TC74HCT7007AF RDS (MAIN u-COM) IC205 IC206 REMOTEFL FL DRIVER (A/D) KEY ENCODER ROTARY C0NTROL LED MID TREBLE BASS EX. BASS LOUD J1 HEADPHONES AMP POWER D1 38V AVR D2 +12V AVR +8V AVR D3 P. T. T1 +5.6V AVR D16-21 DECK MECHA DECK ANALOG TUNER AUDIO CD BTL-DRIVER MD ANALOG MD MECHA.

18、DIGITAL CD DSP. RF-AMP FL DRIVER DISPLAY MD u-COM MAIN u-COM IC1 S1Q1-6 IC2 A1 IC3 MD MECHA. MDM-98A IC5 IC4 Q3,4 Q5-16 PROTECTION CIRCUIT Q17-21 FL Q32,35 Q27-29 Q30,31 +5V AVR Q208 Q205 +5V AVR Q7,8 AVR +6.5V/5V Q9 AVR +6V +5V AVR Q201,202 FL FILAMENT AC4.5V K1 POWER RELAY Q33 AC IN DIGITAL OUT A2

19、01 DECK SP. OUTPUT M,E,T12.25V/6(10%) POWER RELAY J1 CONTROL u-COM L3,4 SPEAKERS D5 ED1 MECHA. DECK 425mV FE TE SI RF FFDR FRDR TFDR TRDR SFDR SRDR MDP Rch-OUT Lch-OUT PB AMP REC AMP DOLBY B OUT 580mV IN R/P (REC=H) DOUT RESET (FCS.TRK.SLD.SFD-DRIVE) DSCK RESET PDOWN MD-ST SERCH KDATA U.T.D U.K.D X1

20、 X1 X2 DSTB MDDATA LOAD SW MD R.D MD T.D + + + + + 5.0V 3.3V 1.2V1.8V +3dB MUTE 200mV DOLBY DECK TUNER AUX CD MD 850mV +12V (5MHz) 850mV RXD-M51MD(K) COVER1,1P( 98.12.10 19:11 yW 7 RXD-M51/M51MD 5 CIRCUIT DESCRIPTION 1. Initialization 1-1 Setting of initial conditions While pressing the SET key, plu

21、g the AC power cord into an AC power outlet. 1-2 Initializing operation A microcomputer is initialized for start when the AC power is turned on while pressing the SET key. At that time, CD mechanism, MD mechanism and CAS- SETTE mechanism are also initialized. During the initial operation, the displa

22、y shows “INITIAL- IZE” and after that the clock blinks up on display. 1-3 Initial items and back up data 1-4 Mechanism initialization 1-4-1 CD mechanism If a mechanism error occurs, “C” is indicated on the display. 1-4-2 MD mechanism The MD ON code is input within 4 seconds after turned the power po

23、rt on, the MD initial code (D122H) is out- put. If the MD on code is not input, the error indication is displayed as M on the display. 1-4-3 CASSETTE mechanism If a mechanism error occurs, X is indicated on the dis- play. ch Destination K2E2E1/H 1FM97.50MHz FM97.50MHz FM97.50MHz 2FM108.00MHz FM108.0

24、0MHz FM 108.00MHz 3AM630kHz AM630kHz AM630kHz 4AM1000kHz AM999kHz AM999kHz 5AM1440kHz AM1440kHz AM1440kHz 6AM1610kHz AM1602kHz AM1602kHz 7FM87.50MHz FM87.50MHz FM87.50MHz 8FM87.50MHz FM87.50MHz FM87.50MHz 9FM87.50MHz FM87.50MHz FM87.50MHz 10FM89.10MHz FM89.10MHz FM89.10MHz 11FM87.50MHz FM87.50MHz FM

25、87.50MHz 12FM90.00MHz FM90.00MHz FM90.00MHz 13FM106.00MHz FM106.00MHz FM 106.00MHz 14AM530kHz AM531kHz AM531kHz 15FM87.50MHz FM87.50MHz FM87.50MHz 16FM98.00MHz FM98.00MHz FM98.00MHz 17FM98.50MHz FM98.50MHz FM98.50MHz 18FM87.50MHz FM87.50MHz FM87.50MHz 19AM990kHz AM990kHz AM990kHz 20FM97.40MHz FM97.4

26、0MHz FM97.40MHz 21FM87.50MHz FM87.50MHz FM87.50MHz 22FM87.50MHz FM87.50MHz FM87.50MHz 23FM87.50MHz FM87.50MHz FM87.50MHz 24FM87.50MHz FM87.50MHz FM87.50MHz 25FM87.50MHz FM87.50MHz FM87.50MHz 26FM87.50MHz FM87.50MHz FM87.50MHz 27FM87.50MHz FM87.50MHz FM87.50MHz 28FM87.50MHz FM87.50MHz FM87.50MHz 29FM

27、87.50MHz FM87.50MHz FM87.50MHz 30FM87.50MHz FM87.50MHz FM87.50MHz 31FM87.50MHz FM87.50MHz FM87.50MHz 32FM87.50MHz FM87.50MHz FM87.50MHz 33FM87.50MHz FM87.50MHz FM87.50MHz 34FM87.50MHz FM87.50MHz FM87.50MHz 35FM87.50MHz FM87.50MHz FM87.50MHz 36FM87.50MHz FM87.50MHz FM87.50MHz 37FM87.50MHz FM87.50MHz

28、FM87.50MHz 38FM87.50MHz FM87.50MHz FML 74.00MHz 39FM87.50MHz FM87.50MHz FML 65.00MHz 40FM87.50MHz FM87.50MHz FML 69.00MHz 2. TUNER preset frequency ITEMS POWEROFF VOLUME15 BALANCECENTER LOUDNESSOFF AMPEX. BASSON INPUT SELTUNER AUX INPUT0 (-6dB) BASS0 TREBLE0 BANDFM LAST fLIMIT TUNERLAST Pch AUTO/MON

29、OAUTO PchTEST f CLOCKAM 12 : 00 PROG ONAM 12 : 00 CLOCKPROG OFFAM 12 : 00 TIMERPRO MODEPLAY SOURCETUNER Pch1 EXEOFF OTTOFF SLEEPOFF PLAY MODETRACK REPEATOFF CDRANDOMOFF PLAY MODESTOP TIMESINGLE DIRECTIONFORWARD DECKRVS MODEp DOLBY NROFF OPERATION MODESTOP back up data 4. Main microprocessor M30622MA

30、-174FP (X09 : IC205) 4-1 Microprocessor periphery block diagram 4-2 Key matrix Vref = 5V ( ) of KEY : RXD-M51 Desti- U-COMDiscrimination Receiving frequencyChannelPORT nation Desti- DSW4DSW3DSW2 Bandrangespace IFRF 92 nation K, PK1000 FM87.5MHz108.0MHz100kHz+10.7MHz25kHz0 AM530kHz1700kHz10kHz+450kHz

31、10kHz0 M, YK2011 FM87.5MHz108.0MHz100kHz+10.7MHz25kHz1 AM530kHz1610kHz10kHz+450kHz10kHz0 JJ00 FM76.0MHz108.0MHz100kHz-10.7MHz25kHz0 AM531kHz1629kHz9kHz+450kHz9kHz0 Q FMH87.5MHz108.0MHz50kHz+10.7MHz10kHz0 Q RDS 10FML65.0MHz74.0MHz10kHz+10.7MHz10kHz0 AM531kHz1602kHz9kHz+450kHz9kHz0 E, T E1 110 FM87.5M

32、Hz108.0MHz50kHz+10.7MHz25kHz0 RDSAM531kHz1602kHz9kHz+450kHz9kHz0 3. Destination list of TUNER(DSW4=50pin, DSW3=49pin, DSW2=48pin) 0=(input low)1=(input high) GC-E6003 X09, IC203 X14, IC1 X14 Q16 X09 IC4 X09 IC1 X09, IC2 X09 A301 X09 IC206 E TYPE ONLY X09 IC205 CD mechanism Mechanism control circuit

33、Mechanism control circuit Auto reverse cassette mechanism Head amp Dolby B CXD2587Q CD-DSP TUNER PLL IC LC72131M AUDIO AMP SYSTEM IC (LC75396) MD MDM-98A LED X14 ED1 FL CM1740M Key matrix encoder remocon RDS demodu- lator DOT driver LC75710NED LED driver M30622MA-174FP u-COM VOLTAGE V RXD-M51MD(K) C

34、OVER1,1P( 98.12.10 19:11 yW 10 RXD-M51/M51MD 6 CIRCUIT DESCRIPTION Pin No.NameI/ODescription 1CEOSYSTEM IC(LC75396)/PLL IC(LC72131) CE 2PLL DOIPLL DATA INPUT 3SDITUNER SD DETECT INPUTH : NO TUNEDL : TUNED 4STEREOITUNER STEREO DETECT INPUTH : MONOL : STEREO 5EMPHASISOTUNER EMPHASIS CHANGEOVERH : FM10

35、0kHzL : AM50kHz 6RDS DATAIRDS DATA INPUTH : 1L : 0 7CEIAC OFF DETECT INPUTH : AC ONL : AC OFF 8BYTEICONNECT GND 9CNVSSICONNECT GND 10XCINITIMMER CLOCK(32.768kHz) 11XCOUTOTIMMER CLOCK(32.768kHz) 12RESETIU-COM RESETH : NORMALL : RESET 13XOUTOMAIN CLOCK 14VSSGND 15XINIMAIN CLOCK 16VCC5V POWER SUPPLY 17

36、NMIICONNECT 5V 18REMOCONIREMOCON INPUT INTERRUPT BY H L 19RDX CLKIRDS CLK INPUT INTERRUPT BY LH 20SCORISUB CODE SYNCHRO SIGNAL INTERRUPT BY H L(CXD2587Q) 21CD DC OFFOCD DSP POWER SUPPLY CONTROLH : OFFL : ON 22SCLKOCD SENSE DATD READ OUT CLOCK (CXD2587Q) 23SENSEICD SENSE INPUT (CXD2587Q) H : 1L : 0 2

37、4CD CLKOCD DSP LOCK (CXD2587Q) 25XLATOCD DSP LATCH OUTPUT (CXD2587Q)L : LATCH 26CD DATAOCD DSP DATA OUTPUT (CXD2587Q)H : 1L : 0 27CD RSTOCD DSP RESET OUTPUT (CXD2587Q)H : NORMALL : RESET 28SQCKOCD SUB CODE CLOCK (CXD2587Q) 29SUBQICD SUB CODE INPUT (CXD2587Q) 30NCONO USED 31FL DATAOFL DRIVER DATA OUT

38、PUT (LC75710NE) 32NCONO USED 33FL CLKOFL DRIVER CLOCK (LC75710NE) 34CD MUTEICD MUTE INPUT (CXD2587Q) 35MD TXDOTRANSMISSION DATA OUTPUT TO MD (UART) 36MD RXDIDATA INPUT FROM MD (UART) 37LCDOCD LASER OUTPUT CONTROLH : OFFL : ON 38NCONO USED 39MD RSTOMD RESET OUTPUTH : NORMALL : RESET 40CD MONOCD MON O

39、UTPUTH : ONL : OFF 41NCONO USED 42MDP SHORTOSAME CD POWER SIGNALH : OFFL : ON 43DOOR OPENICD DOOR SWITCH INPUTH : OPENL : CLOSE 44,45NCONO USED 46DSW0IDESTINATION DISTINCTION (MODEL)H : RXD-M51L : RXD-M51MD 47DSW1IDESTINATION DISTINCTION (DOLBY)H : NO DOLBYL : DOLBY NR 48-50DSW2-DSW4IDESTINATION DIS

40、TINCTION (TUNER) 51FL RSTOFL DRIVER RESET OUTPUT (LC75710NE)H : NORMALL : RESET 4-3 Pin description of main microprocessor: M30622MA-159FP Pin No.NameI/ODescription 52MD CEOMD CE CONTROLL : CE 53ENC1IROTARY ENCODER1 (VOL. INPUT A) 54ENC2IROTARY ENCODER2 (VOL. INPUT B) 55LED5OLED OUTPUT D2 SELECTOR M

41、D /TUNERH : ONL : OFF 56LED4OLED OUTPUT D1 SELECTOR CDH : ONL : OFF 57LED3OLED OUTPUT D5(RED) TIMERH : OFFL : ON 58LED2OLED OUTPUT D5(GRN) STANDBYH : OFFL : ON 59LED1OLED OUTPUT D3 TAPE DIRECTION(FWD) H : ONL : OFF 60LED0OLED OUTPUT D4 TAPE DIRECTION(RVS) H : ONL : OFF 61FL CEOFL DRIVER CE OUTPUT (L

42、C75710NE) 62VCCPOWER SUPPLY 63NCONO USED 64VSSGND 65A/B-2ODECK ACTIVITY CHOICE MODE (HA12219NT) 66A/B-1ODECK ACTIVITY CHOICE MODE (HA12219NT) 67CPMODECK MOTOR CONTROLH : ONL : OFF 68SOLODECK SOLENOID CONTROLH : ONL : OFF 69REC F SWIDECK FEW REC SW INPUTH : OFFL : ON 70REC R SWIDECK RVS REC SW INPUTH

43、 : OFFL : ON 71PACK SWIDECK PACK SW INPUTH : OFFL : ON 72Cr02 SWIDECK CrO2 DETECT SW INPUTH : CrO2L : NORMAL 73PLAY SWIDECK PLAY SW INPUTH : OFFL : ON 74B1/2ODECK ACTIVITY CHOICE MODE (HA12219NT) H : B2L : B1 75A120/70ODECK ACTIVITY CHOICE MODE (HA12219NT) H : 70UL : 120U 76BIASODECK BIAS CONTROLH :

44、 ONL : OFF 77NORODECK NORMAL (HA12219NT)H : NORMALL : CrO2 78REC/PLAYODECK REC/PLAY CHANGEOVERH : RECL : PLAY 79DOLBY/NRODECK DOLBY CONTROLH : ONL : OFF 80CLKOCLOCK OUTPUT TO SYSTEM IC/PLL IC 81MD PROTECTIMD PROTECTIONL : PROTECT 82FAN H/LOFAN SPEED CONTROLH : LOWL : HI 83FAN ON/OFFOFAN ON/OFF CONTR

45、OLH : OFFL : ON 84A MUTEOAUDIO MUTE CONTROLH : OFFL : ON 85CD A MUTEOCD ANALOG MUTE CONTROLH : ONL : OFF 86TUNER MUTEOTUNER MUTE CONTROLH : ONL : OFF 87POWEROPOWER RELAY CONTROLH : ONL : OFF 88PROTECTIPROTECTION DETECTH : PROTECT 89-91KEY1-KEY3IKEY A/D INPUT1-3 92,93AD PROTECT2,1IPROTECTION DETECT I

46、NPUT2,10.5V : PROTECT 94MECHA MUTEODECK MECHA MUTE OUTPUTH : ONL : OFF 95RDS SLEVELIRDS S-LEVEL INPUT (E,T type) 96AVSSGND 97PHOTOIDECK ROTARY DETECT INPUT 98VREF5V REFERENCE VOLTAGE ( NO BACKUP) 99AVCC5V POWER SUPPLY ( BACKUP) 100DATAODATA OUTPUT TO SYSTEM IC/PLL IC 6566 HHREC HLREC PAUSE,ARM LLPLA

47、Y RXD-M51MD(K) COVER1,1P( 98.12.10 19:11 yW 11 RXD-M51/M51MD 7 CIRCUIT DESCRIPTION Back up power supply (+5V) X09, IC205 X33, IC1 MAIN u-COM M30622MA-174FP ENG_KANA MD_MUTE MUTE AND OR (MAIN u-COM) back up sw MD SUPPLY VOLTAGE CHANGE-OVER TERMINAL MD_RESET MD-ST SEARCHLOAD_IN DSCK K_DATA DSTB MD_DAT

48、A uart rxd txd digital in analog L/R in analog L/R out AD / DA CONVERTER MD CONTROL u-COM DRIVE UNIT MD u-DOM RF AMP ENDEC / ATRAC MD mecha. unit (MDM-98A) 2 22 2 2 1 3 1 uPD78058GC-B20 DISPLAY CONTROL RF AMP CONTROL SIGNAL PROCESSING IC CONTROL (TUNER) VOLUME, MUTE CONTROL INPUT SELECTOR CONTROL back up voltage detection 5. Composition (MD section) 5-1 Microproc