Kenwood-MD2070-md-sm 电路图 维修手册.pdf

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1、In compliance with Federal Regulations, following are reproductions of labels on, or inside the product relating to laser product safety, KENWOOD-Corp. certifies this equipment conforms to DHHS Regulation No.21 CFR 1040.10, Chapter 1, Subchapter J. DANGER : Laser radiation when open and interlock de

2、feated. AVOID DIRECT EXPOSURE TO BEAM. Illustration is DMF-9020. Refer to parts list on page 29. STEREO MINIDISC RECORDER DMF-9020/9020(S) MD-2070 SERVICE MANUAL 1998-11/B51-5495-00 (K/K) 2945 EDIT/ SPACE FADE/ DELETE INPUT MONITORREC INPUT STEREO MINIDISC RECORD ER TIMER PHONES KEYBOARD LEVEL MINMA

3、X OFF PLAYREC SEARCH TITLE DISC LOADING MECHANISM 24 bit Rec. DIGITAL 1 5RDOSRAM read strobe 6WROSRAM write strobe 7CSOSRAM CSL; SRAM enable 8ASTBOSRAM address strobe 9Vdd-Power supply (Microprocessor) 10POWEROPower terminalH; Power ON 11MUTEOMute control outputL; Mute ON 13SCHNGOE2PROM data IN/OUT

4、change-overH; SDA output 14SBUSYI/O16 serial busy 15SDATAI/O16 serial data 16SCLOE2PROM clock 17SDAI/OE2PROM data 18LDONOLaser ON / OFF control portH; LD ON 19RMSOPick RMSH; ON 20XLATOSystem IC latch 21SENSISystem IC sens 22Vpp-GND 23PROTECTIDetection port of protect switchL; Protect ON 24REFLECTIDe

5、tection port of reflect switchH; Low reflect 25DISCINIDetection of disc input switchL; Disc out SW ON 26STTLMTIDetection port of limit switchL; Start limit SW ON 27PHOTSWIDetection of mechanism play positionL; Photo sensor ON 28REC SWIInput port of detection from REC position switchL; REC SW ON 29LO

6、ADINOOutput port of loading motor control signalL; Loading OUT 30LOADOUTOOutput port of loading motor control signalL; Loading IN 31MNT0IFOK signal from CXD2652AR (IC2)L; Focus ON 32MNT2IInput port of monitor 2 from CXD2652AR (IC2) 33XRSTOOutput port of reset signal to CXD2652AR (IC2) 34TXOOutput po

7、rt of recording permitted signal 35RECPOLaser power control to CXD2652AR (IC2) 36MNT3IInput port of monitor 3 from CXD2652AR (IC2) 37Vdd-Power supply (Microprocessor) - - 41OPENONo used 42GNDINo used 43RESETIMicroprocessor hard reset 44REMIRemocon signal input terminal 45XINTIInput port of interrupt

8、ed status from CXD2652AR (IC2) 46CEIMicroprocessor chip enableH; Enable / L; disable 47SQSYIInput port of sub code Q from CXD2652AR (IC2) 48DQSYIU-bit of digital IN / SUB Q sync input of CD format from CXD2652AR (IC2) 50MNT1IInput port of track jump detection from CXD2652AR (IC2) 51Vdd-Microprocesso

9、r power supply (+5V) 52AVref 0-A/D reference voltage (Connect Vdd) 5356KR0KR3IKey return (KR0KR3) 57TMSWITimer switch input 0.0V OFF1.25V PLAY3.7V REC5.0V 58INISW1IDetection selector 59BACKIBack up voltage detection (Less than 2.2V : NG) 61GND-GND 62BACK ONOBack up charge controlH; Charge ON 63ENCAI

10、Rotary encoder A 64AVref 1-D/A reference voltage (+5V) 65SRDTIData for reading input from CXD2652AR (IC2) 1-2 Pin description 1,2 3EXLATOExtension port latch 4EXCLOExtension port clock 12INISW2ODestination selector H:DMF-9020,MD-2070 38,39X2.1Clock OUT/IN (12.5MHz) 40VssGND 49DDQSYIDIR.(LC8904Q)SUB-

11、Q thrust 60ENCBIEncoder input B 1. Mechanism microprocessor : uPD784215GF533 (X25: IC31) 1-1 Microprocessor peripley block diagram E2PROM RF AMP EXLAT:03 EXDT:71 DINSEL1 DINSEL2 DRON ADRST DARST EMPHA FLDRST DIGRST EXCK:04 CENA:70 CRXD:68 CTXD:69 SRCLAT:80 SRCDT:83 SRCCK:82 DEMPH:77 DSUB2:83 DSUB1:7

12、8 DRDT:73 DDQSY:49 DLAT:76 ENCB:60 31:MNT0 50:MNT1ATRAC DRAM (X33) IC7 IC31 (X33) IC2 (X33) IC1 (X33) IC6 (X25) IC34 (X25) IC33 36:MNT3 32:MNT2 CXD2652AR 66:SWDT 20:XLAT 67:SCLK 65:SRDT 33:XRST 21:SENS 47:SQSY 48:DASY 45:XINT 35:RECP 34:TX 18:LDON u-COM 19:RMS CXA2523AR 13:SCHNG DWDT:74 DCLK:75 17:S

13、DA 16:SCL LC75710NE TC74HC4094 SM5844AF ENCODER FL DRIVER (X14) S3 (X14) IC1 EXPANDER IC AD/DA SUB U-COM SRC LC8904Q DIR (X25) IC32 (X25) IC7,8 (X25) IC30 (X25) IC25 (X25) IC23 FLDCE:72 23:PROTECT 24:REFLECT 25:DISCIN (MDM-04) MD MECHA. ENCA:70 27:PHOTSW 26:STTLMT POWER:1028:RECSW MUTE:1129:LOADIN I

14、NISW2:12 INISW1:58 30:LOADOUT TMSW:575:RD KR2:55 KR3:56 7:CS 6:WR SRAM 8BIT MEMORY LATCH KR1:54 KR0:53 84:AD0 91:AD7 BUS 92:A8 98:A14 RESET:43 CE:46 BACKCHK:85 BACKV:59 BACKON:62 SDATA:15 SBUSY:14 REM:44 DMF-9020(K) INT1,1P( 98.11.26 5:24 PM yW 11 DMF-9020/9020(S)/MD-2070 7 CIRCUIT DESCRIPTION Pin N

15、o.Port NameI/ODescription 1SCLKOText data read clock 2NCOno use 3XMODEOText data decode LSI resetL : POWER DOWN 4-6NCOno use 7RESETMicroprocessor reset 8VDDMicroprocessor power supply (+) 9X2OOscillation (12MHz) 10X1IOscillation (13MHz) 11VSSMicroprocessor GND 12,13NCOno use 14DATAI/OIBM key board I

16、/F data line 15CLOCK_CHGOIBM key board I/F data output lineH : CLOCK LINE LOW 16-20NCOno use LC89170M CYBER TITLER MECHA uCOM (X25) J7 (X25) IC31 (X25) J2 (X25) IC27 (X25) IC28(X25) IC30 IBM KEYBOARD DQSY DQSY73 1 ADDRESS 43 42 40 40 39 38 37 36 35 34 33 32 31 30 29 ASTB 44 RD 23 WR 22 CS 21 /DATA H

17、M62256BLFP-8T TC-74HCT373AF SRAM BAS SCLK SRDT XMODE TTXD TRXD MTXD MRXD MENA DATA CLOCK CLOCK_CHG 78 3 80 79 SUB U-COM 51 50 49 14 77 15 RxD CRxD CTxD DATA CLOCK CENA TxD SCLK SRDT XMOD 2. Sub microprocessor : uPD784035GC836 (X25 : IC28) 2-1 Microprocessor peripley block diagram 2-2 Pin description

18、 1-3 Initialization POWER= ON (DM-9090,DM-5090) REC INPUT= ANALOG AUTO CUT= OFF AUTO/MANUAL= AUTO = 0 dB PLAY MODE= TRACK REPEAT= OFF TIME DISPLAY= SINGLE(+) LEVEL METER MODE= NORMAL MODE AUTO TNO TIME= 2 sec AUTO TNO LEVEL= 0 (-55 dB) REC END WRITE= ON DRIVE= ON PRESET TITLE= PRE1 : Pops PRE2 : Roc

19、k PRE3 : Classic PRE4 : Jazz PRE5 : Disco PRE6 : Best Hits PRE7 : Air Check PRE8 : No. PRE9 : Vol. : Backup item 1-5 Key voltage matrix ModelINISW INISW DMF-9020 3.5 (V) MD-2070 HIGH 1-4 Switch control table No.NameI/ODescription 66SWDTOData for writing to CXD2652AR (IC2) 67SCLKOSerial clock to CXD2

20、652AR (IC2) - H; ON H; ON 80-ONo used / pull up H; ON 83ADRSTOData to SM5844AF (IC25) ADC reset 8491AD0AD7OSRAM address / data (AD0AD7) 9299A8A15OSRAM address (A8A15) 100Vss-GND DIGITAL REC LEVEL FADE= OFF FADE TIME= 3sec 68,69,70N.C. 71EXDTOExtension port data 72FLDCEOCE to FL driver IC(LC75710NE)

21、73DRDTIData for reading form DIR.(LC8904Q) 74DWDTOData for writing to DIR.(LC8904Q) ,FL driver IC(LC75710NE) 75DCLKOClock to DIR.(LC8904Q) ,FL driver IC(LC75710NE) 76DLATOLatch to DIR.(LC8904Q) 77DEMPHIEmphasis form DIR.(LC8904Q) 78DSUB1ISUB1 form DIR.(LC8904Q) 79DSUB2ISUB2 form DIR.(LC8904Q) 80SRCL

22、ATOLatch to SRC.(SM5844AF) 82SRCCKOClock to SRC.(SM5844AF) 83SRCDTOData to SRC.(SM5844AF) 0.0V0.8V1.6V2.4V3.2V4.0V KR0 POWER EJECTPAUSE-FF- KR1STOPRECPLAY-FB TT SEARCH KR2 FADE/EDIT/TT REC MONITOR- DELSPACEINPUTINPUT KR3SET ENTER/REC MODE/ - TIMECHR DMF-9020(K) INT1,1P( 98.11.26 5:24 PM yW 14 DMF-90

23、20/9020(S)/MD-2070 8 CIRCUIT DESCRIPTION 4. Test mode of the unit 4-1 Setting of the test mode While pressing the REC/INPUT key, plug the AC power cord into the AC wall outlet. 4-2 Contents of the test mode Choose the 3 mode by TIMER switch position below. NONE means none mode. (1) INSPECTION mode E

24、NGLISHdisplay (2secs) NIAGARA TEST display Dot: Niagara Segment: All lighting Push a key, then cancel NIAGARA TEST Display KEY 028 into the KEY-TEST mode. Push a key, then display KEY . (2) ERROR RATE mode Function of the key Function of the key 5. Microprocessor reset The microprocessor can be init

25、ialized while pressing the EJECT key, plug the AC power cord into the AC wall outlet. 6. Mechanism test mode Refer to 1050MD/DM-5090/MD-9090 service manual (B51- 5387-00), if you see this test mode. TIMER SWMode (1)RECINSPECTION (2)PLAYERROR RATE OFFNONE KeyMode REC/INPUTKEY-TEST EDITNIAGARA TEST TI

26、TLE INPUTNone all lighting KeyFunction PLAYCPLAY (MID) RECCREC (MID) STOP STOP CPLAY, CREC (2time push) ERROR RATE Pin No.Port NameI/ODescription 21CS (SRAM)OSRAM control. chip selectH : POWER DOWN 22WRSRAM control. write strobe signal output 23RDSRAM control. read strobe signal output 24-28NCOno us

27、e 29-35A14-8SRAM control. address bus 36-42AD7-1SRAM control. address/data bus 43AD0SRAM control. address/data busL : POWER DOWN 44ASTBSRAM control. address strobe signal output 45VSSMicroprocessor GND 46TESTMicroprocessor TEST 47,48NCOno use 49MENAOMechanism-microprocessor. enable 50MRXDMechanism-m

28、icroprocessor. data in line (UART) 51MTXDOMechanism-microprocessor. data out line (UART) 52-54NCOno use 55VDDMicroprocessor power supply (+) 56-61NCIno use 62CTR_JISICyber titler. for JIS codeH : JIS 63TXT_JISCD TEXT. for JIS codeH : JIS 64AVDDA/D power supply 65AVref1A/D reference voltage input por

29、t (+5V) 66AVSSA/D GND 67,68NCOno use 69AVref2D/A reference voltage input port (+5V) 70AVref3A/D reference voltage input port (GND) 71,72NCIno use 73DQSYText data read permitL :interrupt 74-76NCIno use 77CLOCKIIBM key board I/F clock lineL :interrupt 78SRDTIText data read line 79TRXDICyber titler. da

30、ta in line (UART) 80TTXDOCyber titler. data out line (UART) AD1855 SERIAL DATA INTERFACE 16-/18-/20-/24-BIT DIGITAL DATA INPUT 25 27 3195 20 , 19 8 , 6 2 7 11 ,24231822 12 , 102814 131617 15 21 SERIAL MODE DIGITAL GND ANALOG GNDRD/RSTMUTEDE-EMPHASIS ANALOG SUPPLY ZERO FLAG ANALOG OUTPUTS 384/256 96/

31、48Fs CLOCK DIGITAL SUPPLY CONTROL DATA INPUT CLOCK IN X2MCLK ATTEN/ MUTE 8x INTERPOLATOR MULTIBIT SIGMA- DELTA MODULATOR OUTPUT BUFFER CLOCK CIRCUIT VOLTAGE REFERENCE SERIAL CONTROL INTERFACE OUTPUT BUFFER DAC DAC MULTIBIT SIGMA- DELTA MODULATOR 8x INTERPOLATOR ATTEN/ MUTE 3. D/A converter : AD1855

32、(X25 : IC7) Block diagram (No. of : pin No.) DMF-9020(K) INT1,1P( 98.11.26 5:24 PM yW 15 EB E B E B EB E B E B E B E B E B Q5 Q12 D2 D26 D31 Q24 Q23 IC21 Q45 D6 Q6 Q20 D18 D33 IC17 IC16 IC18 IC36IC38 Q25 IC33 D12 D13 D3 D16 D14 D15 D7 D8 Q8 Q9 D17 Q10 D20 D19 D25 IC39 IC30 Q27 IC32 D23 D22 D36 D32 D

33、37 D38 Q32 C216 R357 R215 R98 R160 R159 R356 R355 R354 R201 C201 R202 R203 R164 R23 R24 R116 R207 C202 C211 R211 R218 C213 R216 R219 C290 C122 R126 R125 R46 R35 R385 R33 R176 R190 R241 C207 R21 R330 R331 R328 R350 R332 R329 R333 R244 R151 R150 R383 R382 R411 R152 R145 C48 C95 R403 R416 C123 C124 C45

34、3 R317 C302 C325 C303 R316 R318 C301 C91 C308 R147 R146 R20 C34 C35 R11 R10R12 C22 C24 C26 C27 C18 R6 R169 R153 R157 R162 R163 R165 R144 R143 R384 R108 R109 R16 R17 R456 R455 R7 R13 R14 R8 W1 C39 R180 R123 C166 C172 C171 R127 R113 R111 R96 R124 R122 C178 C165 C177R106 R19 R388 R386 R97 R387 R394 C21

35、2 R186 R189 R185 C315 R301 R297 C175 C176 R188 R187 R308 C230 R227 R223 R226 R225 R224 R228 R229 R231 R233 R232 C214 C405 R234 C220 R119 R405 C209 R239 R236 C226 R319 R209 R15 R120 R287 C306 R349 R302 R298 R313 R368 R325 R366 R300 R369 C311 C309 C312 C310 R365 R364 R363 R321 R345 R361 C228 R286 R344

36、 C322 R246 R247 R375 R220 R293 R294 R372 C318 R360 R359 R358 C400 C210 R212 R214 R310 R376 R338 R299 C321 C319 R235 C317 C224 C222 R238 R195 R114 R121 R117 R409 R118 R142 R141 R292 R451 C451 R240 L2 R289 R305 R306 R303 R377 R378 L1 L4 L3 C183 C184 C223 C219 R245 R324 R278 R277 R22 R452 C452 R32 R408

37、 R158 R161 110 1120 1 10 11 20 1 7 148 17 148 1 7 8 14 18 169 17 8 14 18 169 17 14 8 10 1 11 20 EB E B EB EB R128 R129 R42R41 R44 R284 R290 R213 R48 C324 C323 R173 R175 R210 C208 R166 R174 R217 R205 C203 R204 R206 C10 R49 R171R167R168R172 R47 R99 R100 R107 R155 R83 R283 R339 C121 C5 C6 R85 C404 C406

38、 R154 R82 R84 C408 R402 R404 C402 R414 C407 C403 C409 R407 R312 R401 R412 C170 C169 R327 R326 R342 R311 R322 R336 R323 C305 R320 R390 C401 R170 R110 R18 R9 R115 R112 R101 C206 R105 C109 C108 R389 R102 R103 C99 R104 R413 R415 R140 R374 R352 R156 R381 R380 R379 R222 C218 C217 R230 R193 C316 R295 C221

39、R237 R282 C205 R194 R296 R315 R341 R393 R314 R288 R346 R340 R348 R347 R337 R362 R335 R334 R351 R353 R370 R371 R196 R457 R221 R391 R285 C229 C411 C110 C111 C112 R304 R343 R307 R309 C225 C227 C232R280 R281 R279 R454 C410 80 1 20 2140 41 60 61 111 12 22 2333 34 44 33 34 23 22 12 111 44 1 10 1120 1 8 16

40、 9 112 13 24 2536 37 48 1 8 5 4 8 5 1 4 8 5 14 14 85 1 14 28 15 17 814 17 148 10081 31 50 51 80 30 1 1 14 2815 28 114 15 1 7 14 8 8 14 1 7 1 7 61 1 6 RIN LIN ROUT LOUT 12.0MHz 22.5792MHz 256fs CE POWER 12.5MHz ADDT C28 SGND BUSY SDATA GND SGND BUSY SDATA GND 9 29 DRIVE LOAD 19 1 81 1 1 P1 MICOM 171

41、R191 C142 R43 X1 C94 C129 C148 C241 C128 C146 C134 C136 C130 C135 C139 C144 C133 C137 C127 C126 C138 C132 C143 R192 R45 C3 C23 C42 C41 C21 R27 C20 C2 C191 X2 C105 C104 C93 C92 C47 C304 C125 C31 C307 C4 C17 C25 C16 C15 C19 C30 C13 C140 C180 C164 C160 C156 C152 C151 C155 C158 C29 C32 C33 C36 C38 C40 C

42、37 C162 C181 C163 C159 C153 C149 C150 C154 C157 C167 C168 C182 C101 C215 C231 X3 C103 C1 19 I O G E B E B 1 I G O E B E B EB EB EB E B OI OI B E 1 4 B E EB E B EB E B B E IC15 IC26 IC34 IC31 IC25 Q46 IC13 Q30 Q31 IC14 IC22 IC37 D29 IC29 IC28 IC23 IC27 IC11 IC10 IC8 Q21 Q22 D24 IC24 Q28 IC7 IC2 IC1 W

43、H2 CN2CN3 Q18 CN4 J5 Q13 A1 J6 IC35 E1 A2 Q44 J3 Q16Q19 Q17 Q42 E4 CN8 J4 IC5 CN1 D1 D11 Q11 D21 Q7 IC4 D10 J2 J1 CN5 D9 CN14 E3 J7 WH3 X25-6170-00 A/2 (J70-1263-21) X25 B/2 MICOM E2 4 POWER SUPPLY 4 D.R.I.V.E ADC SRC DIR DAC CLOCK GEN LPF CN7 WH1 TX SYSTEM CONTROL PLAY OUT OPT.COAX. REC IN 3 COAX.O

44、PT. 2 COAX. 1 DIGITAL REC INPLAY OUT LINE RX 9 ACEBD 2 1 3 5 7 4 6 Refer to the schematic diagram for the value of resistors and capacitors. PC BOARD (Component side view) DMF-9020(K) INT1,1P( 98.11.26 7:09 PM yW 18 FGIHJ 2 1 3 5 7 4 6 Refer to the schematic diagram for the value of resistors and ca

45、pacitors. PC BOARD (Component side view) 10 DMF-9020(K) INT1,1P( 98.11.26 7:06 PM yW 17 KMOQSLNPRT 2 1 3 5 7 4 6 Refer to the schematic diagram for the value of resistors and capacitors. PC BOARD(Component side view) 1112 DMF-9020(K) INT 2P( 98.11.26 5:37 PM y W 2 ABDFHJCEGI 2 1 3 5 7 4 6 RF AMP D10

46、1 CN103 CN104 ACIRC DRAM Q2 E Q1 Q6 Q4Q5 Q3 Q7 HEAD DRIVER Q8 Q9 D1D2 Q10 BUFFER BTL ATRAC EN/DECODE 512fs OPTICAL PICK-UP BLOCK (KMS-260A/JIN) HR901 OVER WRITE HEAD ADJUSTMENT CN106 PROM 48 MORFO GND 13 12 WELAD 25 11 APC TE 26 10 PD CSLED 27 9 F SE 28 8 E ADFM 29 7 D ADIN 30 6 C ADAGC 31 5 B ADFG

47、32 4 A AUX 33 3 VC FE 34 2 J ABCD 35 1 I BOTM 36 14 TEMPI MORFI 47 15 TEMPR RFO 46 16 SWDT OPN 45 17 SCLK OPO 44 18 XLAT ADD 43 19 XSTBY COMPP 42 20 FOCNTCOMPO 41 21 VREF AGCI 40 22 EOADJRFAGC 39 23 3TADJ RF 38 24 VCC PEAK 37 1 2 3 4 5 6 7 8 9 10 IN1RIN3R 16 PSDVDD 13 14 15 IN3F IN1F VM3 VM1 10 11 1

48、2 PONB3 OUT3FPONO OUT1 OUT3R OUT1 4 7 OUT2 OUT4R VM34 9 VM1 PONB4 8 POND2 VM2 VH4 OUT4F 6 IN4F 5 IN2F IN4R 3IN2R GND YO 2 CAPA- CAPA+ 1 17 19 18 20 21 23 22 29 26 24 25 27 28 30 31 32 SWDT ADRD 71 5 50 MVC1 DCHG 76 70 ADRT SCLK 6 69 AVDD XLAT 7 68 ADID SRDT 8 67 VC SENS 9 66 AUXI XRST 10 65 FE SQSY

49、11 64 ABCD DQSY 12 63 B RECP 13 62 PEAK XINT 14 61 CLTV TX 15 60 FIL0 OSCI 16 59 FILI OSC0 17 58 PCO XTSL 18 57 PDO AVDD 19 56 AVSS AVSS 20 77 TEST4 D3 49 78 ADFG D2 48 79 FOCNT D0 47 80 XLRF D1 46 81 CKRF XWE 45 82 DTRF XRAS 44 83 APCREF A09 43 84 LDDRXCAS 42 85 TRDRXOE 41 86 TFDR DVSS 40 87 DVDD A11 39 88 FFDRA08 38 89 FRDR A07 37 90 FS4A06 36 91 SRDRA05 35 92 SFDR A04 34 93 SPRD A10 33 94 SPFD A00 32 95 FGIN A01 31 96 TEST1 A02 30 97 TEST2 A03 29 98 DVDD 28 99 FS 27 APCREF 0.1 C117 C115 1000P C106 R104 10K 11 19 18 16 17 15 14 13 12 22 20 21 1 2 R10