Kenwood-1050MD-md-sm维修电路原理图.pdf

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1、DISC LOADING MECHANISM PHONES LEVEL REC LEVEL REC INPUT REC MODE /CHARA. SET ENTER PHONES STEREO MINIDISC RECORDER DM -5090 JOG DIAL 4 1 37 8 MONITOR AUTO/ MANU. EDIT / SPACEDELETEREPEAT TITLE SEARCHINPUT TIME DISPLAY LEVEL METER MODE 0 TIMER REC OFF PLAY - ON OFF POWER MIN MAX MIN MAX Dynamic Resol

2、ution Intensive Vector Enhancement D.R.I.V.E. SYSTEM CONTROL PLAY OUT OPT.COAX. REC IN 2 COAX.1 OPT. DIGITALLINE PLAY OUT REC IN R L R L RR KENWOOD badge* (B43-) Knob* (K27-) Panel* (A29-) Front glass* (B10-) Knob* (K29-) Knob* (K29-) Phone jack (3P) (E11-0190-05) Panel* (A60-) Phono jack* (E11-) Op

3、tic receiving module (W02-1181-05) Power cord bushing (J42-0083-05) Phono jack (E63-0120-05) Phono jack* (E63-) Oscillating module (W02-1114-05) AC power cord* (E30-) Metallic cabinet* (A01-) In compliance with Federal Regulations, following are reproductions of labels on, or inside the product rela

4、ting 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 defeated. AVOID DIRECT EXPOSURE TO BEAM. Illustration is DM-5090. *Refer to parts list on page 40. STEREO MINI

5、DISC RECORDER 1050MD/DM-5090 DM-9090 SERVICE MANUAL 1997-11/B51-5387-00 (K/K) 3191 1050MD/DM-5090(K) COVER 97.11.28 2:25 AM yW 2 RadioFans.CN 1050MD/DM-5090/DM-9090 2 CONTENTS/ACCESSORIES/CAUTIONS CONTENTS/ACCESSORIES/CAUTIONS.2 EXTERNAL VIEW.3 BLOCK DIAGRAM .4 CIRCUIT DESCRIPTION.5 WIRING DIAGRAM.1

6、4 PC BOARD . 15 SCHEMATIC DIAGRAM . 21 EXPLODED VIEW .37 PARTS LIST.40 SPECIFICATIONS .49 CONTENTS Accessories System control cord (1) (E30-2733-05) Remote control unit (1) (A70-1141-05: RC-M0702) Battery cover: (A09-0362-08) Batteries (R6/AA) (2) Audio cord (2) (E30-0505-05) Optical fiber cable(1)

7、(B19-1529-05) Note related to transportation and movement Before transporting or moving this unit, carry out the following operation. 1. Set the POWER key to ON without loading a Mini Disc. Check that no disc is present in the unit. 2. Wait a few seconds and verify that the display shown appear. 3.

8、Set the POWER key to OFF. N OD I S C Beware of condensation When water vapor comes into contact with the surface of cold material, water drops are produced. If condensation occurs, correct operation may not be possi- ble, or the unit may not function correctly. This is not a malfunction, however, th

9、e unit should be dried. (To do this, turn the POWER switch ON and leave the unit as it is for several hours.) Be especially careful in the following conditions : When the unit is brought from a cold place to a warm place, and there is a large temperature difference. When a heater starts operating. W

10、hen the unit is brought from an air-conditioned place to a place of high temperature with high humidity. When there is a large difference between the internal tem- perature of the unit and the ambient temperature, or in con- ditions where condensation occurs easily. AC adaptor (1) (E03-0115-05) M ty

11、pe only Cautions 1050MD/DM-5090(K) COVER 97.11.28 2:25 AM yW 3 RadioFans.CN 1050MD/DM-5090/DM-9090 3 EXTERNAL VIEW EDIT/ SPACE FADE/ DELETE INPUT MONITORREC INPUT STEREO MINIDISC RECORDER DM-9090 TIMER POWER PHONES - O N OFF LEVEL MINMAX OFF PLAYREC SEARCH TITLE DISC LOADING MECHANISM High bit Rec.

12、SRAM enable 8STBOOutput port of strobe signal to IC33 9Vdd-Power supply (Microprocessor) 10POWEROPower terminalH; Power ON 11MUTEOMute control outputL; Mute ON 12INISW2IDestination selector 13SCHNGOE2PROM data IN/OUT change-overH; SDA output 14SBUSYI/O16 serial busy 15SDATAI/O16 serial data 16SCLOOu

13、tput port of clock signal to IC6 (X33) 17SDAI/OInterface port of data signal from / to IC6 (X33) 18LDONOLaser ON / OFF control portH; LD ON 19RMSOPick RMSH; ON 20XLATOSystem IC latch 21SENSISystem IC sens 22GND-GND 23PROTECTIDetection port of protect switchL; Protect ON 24REFLECTIDetection port of r

14、eflect 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 29LOADINOOutput port

15、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 port of recording p

16、ermitted signal 35RECPOLaser power control to CXD2652AR (IC2) 36MNT3IInput port of monitor 3 from CXD2652AR (IC2) 37Vdd-Power supply (Microprocessor) 38,39-Clock IN / OUT (12.5MHz) 40GND-GND 41OPENONo used 42GNDINo used 1050MD/DM-5090/DM-9090 5 CIRCUIT DESCRIPTION 1. Mechanism microprocessor : uPD78

17、4215GF508 (X25- , IC31) 1-1 Pin description 1050MD/DM-5090(K) COVER 97.11.28 2:25 AM yW 10 1050MD/DM-5090/DM-9090 6 CIRCUIT DESCRIPTION No.NameI/ODescription 43RESETIMicroprocessor hard reset 44REMIRemocon signal input terminal 45XINTIInput port of interrupted status from CXD2652AR (IC2) 46CEIMicrop

18、rocessor 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) 49DDQSYIU-bit of digital IN / SUB Q sync input from LC8904Q (IC23) 50MNT1IInput port of track jump detection from CXD2652AR

19、(IC2) 51Vdd-Microprocessor power supply 52+5V-A/D reference voltage (+5) 5356KR0KR3IKey return (KR0KR3) 57TMSWITimer switch input 58INISW1IDetection selector 59BACKIBack up voltage detection 60ENCBIRotary encoder B 61GND-GND 62BACK ONOBack up change control 63ENCAIRotary encoder A 64+5V-D/A referenc

20、e voltage (+5V) 65SRDTIData for reading input from CXD2652AR (IC2) 66SWDTOData for writing to CXD2652AR (IC2) 67SCLKOSerial clock to CXD2652AR (IC2) 68CRXDICommunication to sub u-COM (IC28) 69CTXDOCommunication to sub u-COM (IC28) 70CENAICommunication to sub u-COM (IC28)H; Comm enable 71EXDTOData ou

21、tput to TC74HC4094 (IC32) 72FLDCEOChip enable to FL driver 73DRDTIRead data from LC8904Q (IC23) 74DWDTOData to LC8904Q (IC23) and LC75710NE (IC1) 75DCLKOClock to LC8904Q (IC23) and LC75710NE (IC1) 76DLATOLatch to LC8904q (IC23) 77DEMPHIEmphasis from LC8904Q (IC23) 78DSUB1ISub 1 from LC8904Q (IC23) 7

22、9DSUB2ISub 2 from LC8904Q (IC23) 80SRCLATOLatch to SM5844AF (IC25) 81BACKCHKOBack up voltage check 82VCLKOClock to SM5844AF (IC25) 83VLDTOData to SM5844AF (IC25) 8491AD0AD7OSRAM address / data (AD0AD7) 9299A8A15OSRAM address (A8A15) 100Vss-GND 1050MD/DM-5090(K) COVER 97.11.28 2:25 AM yW 11 LC89170M

23、DQSY SCLK SRDT XMODE DQSY SCLK SRDT XMODE 73 1 78 3 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 44 23 22 21 ADDRESS /DATA BUS ADDRESS BUS ASTB RD WR CS 51 50 49 MTXD MRXD MENA CRxD CTxD CENA MAIN u-COM uPD784215GF -508 uPD7804035GC IC29,IC30 HM62256BLFP-8 T/-7T/-12T SRAM TC74HC373AF X25- IC28 (Exce

24、pt DM-5090,K-type) Titler The value shown in ( ) is the voltage measured at the moment of STOP. The voltage followed by (REC) refers to the value during MD RECORDING. SD1P-1 97.11.28 2:45 AM y W 1 PQSRT 2 1 3 5 7 4 6 0V 5.0V 0V 3.3V 3.3V 3.3V 3.3V 4.9V 3.3V 4.8V 0V 4.9V 0V 5.0V 4.9V 0.3V 4.9V 4.9V 4

25、.9V 0V 0V ON:0V 4.9V 5.0V OFF:4.9V 5.0V 5.0V 0V 0V 3.3V 3.3V 3.0V 4.3V 4.9V 3.4V 5.0V 0V 0V 3.3V 4.9V 5.0V 0.6V 2.7V 0.6V 5.0V 0V 0V 0V 0V 0V 0V 0V 3.4V 3.4V 4.9V 4.9V 1.7V 1.1V 1.7V 5.0V 0.5V0V 0V 4.9V (X25-594X-XX) ELECTRIC UNIT IC35 IC36 IC38 IC39 IC37 IC34 PLAY DIGITAL CONTROLLER G INPUT/OUTPUT

26、LOADING 3 STATE BUFFER 3 STATE BUFFER BUFFER BUFFER D29 Q25 CHANGE-OVER VOLTAGE LOADING DRIVER Q27 CN2 CN3 CN4 Q31 Q30 CHIP CONTROLLER SELECT MEMORY CN8 CN9 B A R372 100K 2.4V 1.6V 330 R390 R389 1K 1K R388 R309 100K C302 0.01 34 1/3 MECHA. MBL-3 +5V +5V+5V +5V +5V +5V +5V +5V +5V +5V +5V+5V +5V +5V

27、+5V +5V +5V +5V MECHA. MBL-3 1/3 -33V -33V-33V -33V -33V +5V +5V +5V+5V +5V +5V R310 100K 8.2K R317 R375 100K 7 3 53 55 56 54 6 5 72 1 2 44 57 C305 0.1 R316 12K R318 33K C303 0.1 + C304 47u10 1 2 VCC IN2 3 OUT2 5 NC 6 VS GND 8 OUT1 9 IN1 VREF 7 4 2.7K R311 18K R312 26 25 23 24 27 28 19 18 16 33 5 3

28、1 1 3 5 32 21 50 47 48 45 13 28 8 12 65 36 31 5 3 1 C301 0.01 C325 0.01 VCC 14 1 11 12 10 9 60 63 R335 100K R334 100K R246 100 R247 100 67 66 17 13 11 9 9 11 13 28 47K R302 8 6 7 GND 100K R308 35 R306 100K R305 100K 20 100K R304 141 13 11 12 2 3 VCC 9 10 8 6 5 7 GND 4 20 19 18 16 15 13 12 14 17 11 1

29、 2 3 5 6 8 9 7 4 10 3 7 1 3 5 H GND29 +5V27 512fs28 D OUT25 +5V26 H+5V24 3.3V22 LOAD-OUT GND21 20 D IN23 19GND 18LOAD-IN 16LRCK 14DADT 15M+5V 17M+5V 13M GND 11M GND 12BCK ADDT SCTX MNTO(FOK) SDA8 7 10 9 MNT3(SLOCK) WRPWP SWDT5 4 6 XLATCH SRDT SCLK 3 2 1 DISC-IN18 +5V19 1 2MNT1(SHCK) SENSE 3DQSY 5SQS

30、Y 4DIG-RST 6 7XINT SCL 8MNT2(X BUSY) GND REC-P MOD 10 11 12 9LDON REFRECT PROTECT PB-P 13 14 15 STTLMT17 CHACK-IN16 TM SW REM DRDT DRCK DRCE AC AC -33V FL GND u+5V KDO KD2 uGND KD1 KD3 ENCA ENCB 12 11 13 14 15 17 16 10 9 8 7 6 5 4 3 2 1 7 9 10 11 1 3 2 4 5 8 2 3 4 5 6 GND 7 13 VCC 14 12 13 R319 100K

31、 28 VCC 5 38 43 6 RST X IN VDD GND 6587 8765 3 4 22 27 7 11 10 11 13 14 15 16 17 18 19 20 21 23 24 25 26 27 28 R321 100K R322 2.7K R323 2.7K R373 100K R303 100K 1.8K 1.8K R326 R327 R328 100K R329 100K R331 100K R330 100K R332 100K R333 100K R343 100K R339 100K R340 100K R307 100K R336 2.7K X X +5V +

32、5V +5V )( )( () )( () () () )( )( () )( () () () () () () () () () () () () () () () )( () () () () () )( () () )( )( )( )( )( () )( )( )( )( () )( )( () )( )( )( () () () () )( () () )( () () ( ( ) ) )( () () )( )( () () )( )( )( )( )( )( )( )( )( )( )( )( )( )( )( )( )( )( )( )( )( )( SD1P-1 97.11

33、.28 2:45 AM y W 2 0V 0V 0V 5.0V 0V0V 4.5V 0V 0V 4.5V 4.5V 0V 0V 5.2V 5.0V 5.0V 0V 5.2V 5.2V 0V 4.5V 4.5V 5.2V 0V 5.2V 0V 0V 1.5V 2.4V 2.5V 2.6V 2.1V 2.4V 2.6V 2.5V 2.6V 0V PLAY: 0V REC:1.6V PLAY: 0V REC:1.6V 5.0V 5.2V 5.0V 5.0V 2.5V 2.5V 2.5V 0V 0V 2.6V 2.5V 5.0V 0V 2.5V 5.2V 4.5V 4.5V 0V 5.2V 4.5V

34、5.1V 5.0V 4.5V 0V 0V 0V 0V 0V 0V 0V 0V 0V 0V 0V 0V 0V 4.5V 0V 0.5V 0V 4.5V 0V0V 0V 5.0V 4.5V 0V 5.2V 5.0V 4.9V5.0V 5.0V 0V 5.0V 2.3V 2.5V 4.9V 0V 5.0V 5.0V 0V 5.0V 5.0V 5.0V 0V 2.5V 4.9V 5.0V 0V 0V 0V 0V 4.9V 4.9V 4.5V 5.0V 5.0V 4.9V 5.0V 5.2V 0V 4.8V 4.3V 5.0V 2.4V 2.8V 5.0V 4.9V 5.0V 5.0V 0V 4.5V

35、IC27 IC26 IC25 IC24 IC29 IC28 IC32 IC33 IC31 IC30 X X C A DIGITAL REC DIGITAL REC MAIN u-COM CONTROLLER D.R.I.V.E ON/OFF D24 DECODER CD TEXT Q21Q22 Q26 D215 DIGITAL REC SEL (LINE/OPT/COAX) D33 (REC) D.R.I.V.E. CON RATE SAMPLING CONVERTER SERI PARA TEXT INPUT u-COM MEMORY LATCH DETECTOR VOLTAGE BACK

36、UP MEMORY IC 8BIT LATCH 8BIT MEMORY MEMORY IC Q23 Q24 100K R357 W1 W2 13 Z 1K R386 R190 470 W5 R393 100K R295 R391 100K 100 R394 1K R387 110K SRAM 11 14 +5V +5V+5V +5V +5V +5V +5V -33V +5V+5V +5V +5V +5V +5V +5V +5V +5V +5V +5V+5V +5V +5V +5V +5V +5V +5V +5V +5V +5V +5V +5V +5V +5V +5V +5V +5V +5V+5

37、V +5V +5V +5V C317 0.01 5 +5V +5V +5V +5V +5V C309 0.01 C316 0.01 13 +5V Q26 -33V-33V 100K R296 100K R289 100K R374 47K R352 1.8K R297 1K 2 23 1 78 28 20 22 2173 4Y 3B 8 2Y GND3Y 7 4 L4 L3 1 R288 100K 4 16 15 14 12 11 9 10 13 1 ST VCC 2 1A SEL 4A 3 1B 4B 5 1Y 3A 6 2B 2A R291 47K C308 0.01 + C307 47u

38、10 C306 0.01 C315 100P 1 36 49 3 34 29 7 W4 R301 47K R290 10 1000P C179 R287 1K C224 0.1 80 82 R285 100 R284 100 0.1 C223 42 40 83 R283 100 8FSBCKO DAC TEST2 RESET N LZ GND AL LO+ LO- VDAL VDAR RO- RO+ GND AR RZ DAC TEST1 DAC TESTO NC 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 MCKO VDX XO XI GND X

39、 NC N VDD NC NC 8FSLRCKO 8FSLDATA 8FSRDATA NC VDD 52 51 50 49 48 47 46 23 24 25 26 27 28 29 30 DI DI BCKI BCKI LRCI ICLK ICKSL IFM1 IFM1 IFM2 IFM2 VSS VSS RSTN RSTN TST2N TST1N STATE IISN IISN OW20N OW20N 1 2 3 4 5 6 7 8 9 10 11 33 32 31 30 29 28 27 26 25 24 23 DOUT DOUT BCKO BCKO LRCO OCLK OCKSL TH

40、RUN THRUN SLAVE SLAVE VDD VDD DNDTE DNDTE MDT/MCOM MDT/PSI1 MCK/PSI2 MLEN/DEEM MLEN/DEEM OW18N OW18N 44 43 42 41 40 39 38 37 36 35 34 12 13 14 15 16 17 18 19 20 21 22 13 7 6 5 3 2 1 4 8 X MODE GND 9 SW1 TEST MCK 10 SW2 WFCK 12 SCLK SBSO 13 DQSY SRDTSCOR EXCK VDD 14 11 R362 100K R361 100K 22 23 21 31

41、 30 32 33 34 35 D6 D4 D5 18 17 16 15 D3 D0 11 D2 13 12 D1 VSS 14 1 A14 2 3 A7 4 5 A5 A6 A12 6 7 A3 8 9 A1 A2 10 A4 VCC A13 A9 A8 WE 24 25 26 27 28 OE CS A10 D7 19 20 21 22 23 A11 A0 R239 470 5 4 4 R244 220 D4 D2 15 D5 Q1 16 Q6 Q5Q2 D1 18 D6 Q0 19 Q7 D7D0 17 14 OEVCC 20 7 35 33 34 32 30 31 29 23 22 2

42、1 68 69 70 C311 0.01 C310 0.01 R366 100K R363 100K R365 100K R368 100K R369 100K R299 100K 73 78 R325 100K R338 100K R324 100K R314 100K R313 100K R315 100K 1M R298 X2 R341 100K R364 100K R300 100K C321 0.1 C312 0.01 SCLK X MODE RESET VDD X2 X1 VSS VDD CRXD CTXD CENA GND STB D0 D1 D2 1 2 3 4 5 6 7 8

43、 9 10 11 12 13 14 15 16 17 18 19 20 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 TXD RXD SRDT DOSY AVREF3 AVREF2 GND AVREF1 VDD CS WR RD A15 A14 A13 A12 A11 A10 A9 A8 D7 D6 D5 D4 D3 80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 21 22 23 24 25 26 27 28 29 30 31 32 33 34 3

44、5 36 37 38 39 40 38 37 36 36 37 38 29 S IN STE DA RST 3 CLK DRIVE 5 DINSEL1 EMPHA 6 DIG RST DINSEL2FLD RST QS 8 AD RST GNDQS 7 4 81 71 49 4 4 71 C207 0.01 3 16 15 14 12 11 9 10 13 1 OE VCC 2 R337 1K 10 R378 100K R377 100K R376 100K W6 11 22 27 85 84 2110 8990 8990 8786 8786 239 248 88 8588 91 8491 2

45、526 12 11 13 14 15 16 17 18 19 20 Q4Q3 LEGND 10 9 D5D2 Q6Q1 Q5Q2 6 5 8 7 D4D3 D7D0 VCCOE 1 Q7QO 2 4 3 D6D1 26 25 24 23 21 R320 100K 91 89 87 85 84 90 86 88 10 9 8 92 93 94 95 96 97 98 27 26 24 23 21 20 22 25 18 19 17 16 15 1 WR 2 A12 A14 A13 3 A7 A8 5 A6 A11 6 A4 A5A9 OE 8 A3 CS 9 A1 A2A10 7 4 D7A0

46、D5 D6 D1 D0 12 11 10 D4D2 D3VSS 14 13 1 2 3 75 74 73 SI SO SCK VPP 1234 4321 84 85 87 86 89 R238 470 2 1 2 33 2 1 72 79 75 76 78 77 73 74 68 69 70 67 66 65 R379 100 R380 100 R381 100 63 60 R356 1K R355 1K R354 100K R371 R370 47K 0.1 C324 57 55 56 54 R384 100 R385 100 R383 100 R353 10K R351 10K R350

47、10K R382 100 R349 10K 53 C323 0.1 43 6 1K R344 5 0.01 C322 42 50 48 47 46 45 44 R347 100K R348 100K R346 100K R345 100K 38 1.8K R342 36 35 33 34 32 31 12MH X3 VDD +5V KR0 KR1 KR2 KR3 TM SW INI SW BACK V ENCB GND BACK ON ENCA +5V SRDT SWDT SCLK CRXD CTXD CENA EXDT FLDCE DRDT DWDT DCLK DLAT DEMPH DSUB

48、1 DSUB2 SRCLAT LOAD OUT LOAD IN REC SW(REC-P) PHOT SW STTLMT DISC IN PEFRECT PROTECT GND SENS XLAT RMS LDON SDA SCL S DATA S BUSY SCHNG INI SW2 MUTE POWER VDD STB CS WR RD EXLAT 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 10 9 8 6 5 3 2 4 7 1 11