Kenwood-DM5090-md-sm 维修电路原理图.pdf

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1、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-)Optic 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-)Met

2、allic cabinet*(A01-)In compliance with Federal Regulations, following arereproductions of labels on, or inside the product relating tolaser product safety,KENWOOD-Corp. certifies this equipment conforms toDHHS Regulation No.21 CFR 1040.10, Chapter 1,Subchapter J.DANGER : Laser radiation when open an

3、d interlockdefeated.AVOID DIRECT EXPOSURE TO BEAM.Illustration is DM-5090.*Refer to parts list on page 40.STEREO MINIDISC RECORDER1050MD/DM-5090DM-9090SERVICE MANUAL1997-11/B51-5387-00 (K/K) 3191RadioFans.CN 收音机爱 好者资料库1050MD/DM-5090/DM-90902CONTENTS/ACCESSORIES/CAUTIONSCONTENTS/ACCESSORIES/CAUTIONS.

4、2EXTERNAL VIEW.3BLOCK DIAGRAM .4CIRCUIT DESCRIPTION.5WIRING DIAGRAM.14PC BOARD . 15SCHEMATIC DIAGRAM . 21EXPLODED VIEW .37PARTS LIST.40SPECIFICATIONS .49CONTENTSAccessoriesSystem control cord (1)(E30-2733-05)Remote control unit (1)(A70-1141-05: RC-M0702)Battery cover: (A09-0362-08)Batteries (R6/AA)

5、(2)Audio cord (2)(E30-0505-05)Optical fiber cable(1)(B19-1529-05)Note related to transportation and movementBefore transporting or moving this unit, carry out thefollowing 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

6、 and verify that the display shownappear.3. Set the POWER key to OFF.Beware of condensationWhen water vapor comes into contact with the surface ofcold 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

7、 a malfunction, however, the unit should be dried.(To do this, turn the POWER switch ON and leave the unitas 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 heate

8、r starts operating.When the unit is brought from an air-conditioned place to aplace 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

9、-0115-05)M type onlyCautionsRadioFans.CN 收音机爱 好者资料库1050MD/DM-5090/DM-90903EXTERNAL VIEWDISC LOADING MECHANISMHigh bit Rec. & Play D.R.I.V.E. 20bit Rec. D.R.I.V.E. & 24 bit D/A converterMiniature phone jack(E11-0188-05)Phono jack(E63-0174-05)Oscillating module(W02-1114-05)Phono jack(E63-0185-05)Power

10、 cord bushing(J42-0083-05)AC power cord*(E30-)Metallic cabinet(A01-3450-01)Illustration is DM-9090.*Refer to parts list on page 40.KENWOOD badge(B43-0302-04)Knob(K27-2178-04)Front glass(B10-2362-04)Panel Assy(A60-1258-02)Knob(K29-6700-03)Knob(K29-6697-04)Phone jack (3P)(E11-0190-05)Panel(A29-0868-24

11、)Escutcheon(B07-2348-21)Escutcheon(B07-2361-22)Knob(K29-6692-04)Knob(K29-6695-14)Knob(K29-3741-04)Escutcheon(B07-2348-21)Phono jack(E63-0121-05)Optic receiving module(W02-1181-05)1050MD/DM-5090/DM-90904BLOCK DIAGRAMREC LEVELJOGREC BAL.FCSTRKNo.NameI/ODescription1,2-ON.C.3EXLATOOutput port of latch s

12、ignal to IC32 (TC74HC4094)4EXCKOClock output port to IC32 (TC74HC4094)5RDOSRAM WR6WROSRAM WR7CSOSRAM CSL; SRAM enable8STBOOutput port of strobe signal to IC339Vdd-Power supply (Microprocessor)10POWEROPower terminalH; Power ON11MUTEOMute control outputL; Mute ON12INISW2IDestination selector 13SCHNGOE

13、2PROM data IN/OUT change-overH; SDA output14SBUSYI/O16 serial busy15SDATAI/O16 serial data16SCLOOutput port of clock signal to IC6 (X33)17SDAI/OInterface port of data signal from / to IC6 (X33)18LDONOLaser ON / OFF control portH; LD ON19RMSOPick RMSH; ON20XLATOSystem IC latch21SENSISystem IC sens22G

14、ND-GND23PROTECTIDetection port of protect switchL; Protect ON24REFLECTIDetection port of reflect switchH; Low reflect25DISCINIDetection of disc input switchL; Disc out SW ON26STTLMTIDetection port of limit switchL; Start limit SW ON27PHOTSWIDetection of mechanism play positionL; Photo sensor ON28REC

15、 SWIInput port of detection from REC position switchL; REC SW ON29LOADINOOutput port of loading motor control signalL; Loading OUT30LOADOUTOOutput port of loading motor control signalL; Loading IN31MNT0IFOK signal from CXD2652AR (IC2)L; Focus ON32MNT2IInput port of monitor 2 from CXD2652AR (IC2)33XR

16、STOOutput port of reset signal to CXD2652AR (IC2)34TXOOutput port of recording permitted signal35RECPOLaser 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-GND41OPENONo used42GNDINo used1050MD/D

17、M-5090/DM-90905CIRCUIT DESCRIPTION1. Mechanism microprocessor : uPD784215GF508 (X25- , IC31)1-1 Pin description1050MD/DM-5090/DM-90906CIRCUIT DESCRIPTIONNo.NameI/ODescription43RESETIMicroprocessor hard reset44REMIRemocon signal input terminal45XINTIInput port of interrupted status from CXD2652AR (IC

18、2)46CEIMicroprocessor chip enableH; Enable / L; disable47SQSYIInput 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 C

19、XD2652AR (IC2)51Vdd-Microprocessor power supply52+5V-A/D reference voltage (+5)5356KR0KR3IKey return (KR0KR3)57TMSWITimer switch input58INISW1IDetection selector59BACKIBack up voltage detection60ENCBIRotary encoder B61GND-GND62BACK ONOBack up change control63ENCAIRotary encoder A64+5V-D/A reference

20、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 enable71EXDTOData output to T

21、C74HC4094 (IC32)72FLDCEOChip enable to FL driver73DRDTIRead 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)79DSUB2ISub 2 from

22、 LC8904Q (IC23)80SRCLATOLatch to SM5844AF (IC25)81BACKCHKOBack up voltage check82VCLKOClock to SM5844AF (IC25)83VLDTOData to SM5844AF (IC25)8491AD0AD7OSRAM address / data (AD0AD7)9299A8A15OSRAM address (A8A15)100Vss-GNDLC89170MDQSYSCLKSRDTXMODEDQSYSCLKSRDTXMODE731783434241403938373635343332313029442

23、32221ADDRESS/DATABUSADDRESSBUSASTBRDWRCS515049MTXDMRXDMENACRxDCTxDCENAMAIN u-COMuPD784215GF-508uPD7804035GCIC29,IC30HM62256BLFP-8T/-7T/-12TSRAMTC74HC373AFX25- IC28 (Except DM-5090,K-type)Titler & CD textSub - u-COMIC27 (Except DM-5090)IC311050MD/DM-5090/DM-90907CIRCUIT DESCRIPTION1-2. Initialization

24、POWER= ON (DM-9090,DM-5090)REC INPUT= ANALOGAUTO/MANUAL= AUTOFADE= OFFPLAY MODE= TRACKREPEAT= OFFTIME DISPLAY= SINGLE(+)LEVEL METER MODE= NORMAL MODEDIGITAL REC LEVEL= 0dBAUTO TNO TIME= 2 secAUTO TNO LEVEL= 3 (-50dB)FADE TIME= 3 secREC END WRITE= ONDRIVE= ONPRESET TITLE= PRE1 : PopsPRE2 : RockPRE3 :

25、 ClassicPRE4 : JazzPRE5 : DiscoPRE6 : Best HitsPRE7 : Air CheckPRE8 : No.PRE9 : Vol.INI SW1AVref(0.81.0AVref)Mecha. u-COM MODE0.7AVref(0.60.8AVref)-0.5AVref(0.40.8AVref)DMF-7002S (J type)0.3AVref(0.20.4AVref)DM-90900.0AVref(0.00.2AVref)DM-5090INI SW2HighOverseas : No katakana character: No cyber tit

26、lerLowJapan: Katakana character: Cyber titler0.00V0.80V1.61V2.41V3.22V4.00V0.78V1.59V2.39V3.20V3.98V4.98VKR0 POWEREJECTPAUSE-FF-KR1STOPRECPLAY-FBTTSEARCHKR2DELSPACETT.REC.MONITIME/EDITINPUTINPUT-TORDISPLEVELKR3SETENTERCHRAUTO /METER REPEAT/ RECMANUALMODE2. Sub microprocessor : uPD784035GC (X25- ,IC2

27、8)2-1. Sub microprocessor periphery block diagram1-4. Key voltage matrix1-3. Switch control table(AVref=Vdd)No.NameI/ODescription1SCLKOText data read clock2N.C.ONo used3XMODEOText data decoder resetL: Power Down46N.C.ONo used7RESETIReset signal input8Vdd-Microprocessor power supply9,10X2,1-12.5MHz o

28、scillator11Vss-GND1220N.C.ONo used21CSOChip select for SRAM controlH: Power Down22WROWrite strobe for SRAM control23RDORead strobe for SRAM control2427N.C.ONo used28A15ONo used2935A14A8-SRAM control terminal (address BUS), A14A83643D7D0-SRAM control terminal (address / data BUS) , D7D044STBOAddress

29、strobe signal output45,46GND-GND47,48N.C.ONo used49CENAOCommunication to main u-COM (enable)50CTXDICommunication to main u-COM (uart TXD)51CRXDOCommunication to main u-COM (uart RXD)5255N.C.ONo used56Vdd-Microprocessor power supply5761N.C.IGND62CTRICyber titler(J type only)63TXTICD text(J type only)

30、64Avdd-A/D power supply terminal (+5V)65AVref1-A/D reference voltage66AVss-A/D GND67,68N.C.ONo used69AVref2-D/A reference voltage70AVref3-D/A GND71,72N.C.INoused73DQSYIText data reading permitted terminalL: Interrupt7477N.C.INo used78SRDTIText data reading line79RXDICommunication to cyber titler (UA

31、RT) (J type only)80TXDOCommunication to cyber titler (UART) (J type only)1050MD/DM-5090/DM-90908CIRCUIT DESCRIPTION2-2 Pin description (uPD784035GC)1050MD/DM-5090/DM-90909CIRCUIT DESCRIPTION3. Test mode of the unit3-1 Setting of the test modeWhile pressing the STOP key, plug the AC power cordinto th

32、e AC wall outlet.3-2 Contents of the test modeDOT TESTSEG TESTKEY TESTCYBER TEST J type onlyUsed for production line only3-3 Function of the test modeDOT TESTThe FL display starts the NIAGARA MODE by pressingthe SET key in the DOT TEST mode.SEG TESTTurn the FL indication ON by pressing the SET key i

33、nthe SEG TEST mode.The FL indication changes cyclically as shown in thebelow by turning the JOG DIAL ().3-4 Function of the keyJOG UP () and JOG DOWN ()keys: Selects the test mode.: Selects the FL indicationSet key: Proceeds the test mode or return to test mode.Stop key: Cancel the test mode.3-5 Mic

34、roprocessor resetThe microprocessor can be initialized while pressing theEJECT key, plug the AC power cord into the AC walloutlet.FL LIGHT ONFL LIGHT OFFENGLISHDOT TEST SEG TEST KEY TEST CYBER TESTFL LIGHT ONFL LIGHT OFFENGLISH4. Mechanism test mode4-1 Setting the test modeConnect a plug of AC power

35、 cord to an outlet of AC, whilepressing PLAY key.4-2 Canceling the test modeUnplug the AC power cord.4-3 Basic operation in test modeAll operations are performed using the JOG DIAL(up/down), ENTER key, DELETE key, and SET key. Thefunctions of each key are shown in the table below.4-4 Selection of te

36、st mode12 test modes are selected by turning the JOG DIAL.For more information on each adjustment mode, refer toIf other adjustment mode has been entered incorrectly,press the DELETE key to exit the mode.* The number 8 - 12 are not used for service. If thesemode have been entered incorrectly, press

37、the DELETEkey immediately to exit the mode. Specially, do not useEEP INITIAL. (E2PROM data has initialized if used it.)4-4-1 Operation in continuous playback mode1. Entering the continuous playback mode(1) Insert a recordable disc or pre-mastered disc into theunit.(2)(3) Press the ENTER key. The dis

38、play then changes from(4) After the access operation is completed, the displayNote: Numerals on the display appear the error rate andADIP error.No. DisplayDescriptionSection1 TEMP ADJUST The work of adjustment is unnecessary - in this mode2 LDPWR ADJUST Laser power adjustment5-53 LDPWR CHECK Laser p

39、ower check5-54 EFBAL ADJUSTTraverse adjustment5-65 FBIAS ADJUST Focus bias adjustment5-76 CPLAY MODE Continuous playback mode4-4-17 CREC MODEContinuous recording mode4-4-28 STT-LIMIT SW Check the mechanism start limit SW position -9 JUMP MODE Track jump checking mode-10 SRV DAT READ Servo data readi

40、ng-11 EEP MODEE2PPROM data reading or rewrite-12 EEP INITIALE2PROM data initializing-FunctionDescriptionJOG DIAL(up/down)Changes the parameter and mode.ENTER keyProceeds for definition.DELETE keyReturns for interrupt.SET keySkip the mode and go to next step.1050MD/DM-5090/DM-909010CIRCUIT DESCRIPTIO

41、N2. Change the playback point.(1) Press the ENTER key during continuous playback. Thedisplay then changes as follows.MID OUT IN(2) After the access operation is completed, the displayNote: Numerals on the display appear the error rate andADIP error.3. Terminating the continuous playback mode(1) Pres

42、s the DELETE key. The display then changes to(2) Press the EJECT key to take out the disc.Note : The playback start addresses of IN, MID, and OUTare described below.IN30H clusterMID300H clusterOUT700H cluster4-4-2 Operation in continuous recording mode1. Entering the continuous recording mode(1) Ins

43、ert a recordable disc into the unit.(2)(3) Press the ENTER key. The display then changes from(4) Press the ENTER key again. The display changes fromtorecording is started.Note: Numerals on the display (#) appear the address ofrecording point.2. Change the recording point.(1)-played. The display chan

44、ges as follows. (The recordingpoint can be shifted.)MID OUT IN(2) Press the ENTER key. The display then changes toNote : Numerals on the display (#) appear the addressof recording point.3. Terminating the continuous recording mode(1) Press the DELETE key. The display then changes to(2) Press the EJE

45、CT key to take out the disc.Notes :1. The recording start addresses of IN, MID, and OUT aredescribed below.IN30H clusterMID300H clusterOUT700H cluster2. The DELETE key can be pressed at any time to stop therecording.3. An erasure prevention control is not detected in the testmode. Be careful not to

46、enter the continuous recordingmode using a disc containing the data that should not beerased.4. Do not record continuously for more than five minutes.5. Take care that no vibration is applied during continuousrecording.4-5 Other key functionsNote : An erasure prevention control is not detected in th

47、etest mode. Notice that recording is performed irrespectiveof the erasure prevention control position when the REC keyis pressed.4-6 Display in test modeThe display is selected in the order of MODE display,address display and error rate display every time the TITLEINPUT key is pressed.1. MODE displa

48、yMODE display.2. Error rate displayThe error rare display appears as described below.C1 = #AD = #C1 = C1 error,AD = ADIP error3. Address displayThe address display appears as described below.h = #, d = #(Recordable groove and pre-mastereddisc.)h=Header address, d=ADIP address* When no address can be

49、 read, - display appears.4. Segment indicationplay mark : servo onpause mark : tracking servo onrec mark : servo on (laser light power)SINGLE : servo groove modeTOTAL : servo mode (CLV-A)PGM : spindle lockCOPY : recordable discFunction DescriptionPlays back continuously when this key is pressed duri

50、ng stop. Turn on and off the tracking servo when it is pressed during continuous playback.Stops the continuous playback and recording.The thread moves to the inner circumference while this key is pressed.REC INPUT Selects the mode for the pit and groove every time this keyis pressed.REC MODE Selects