Yamaha-MDX595-md-sm 维修电路原理图.pdf

《Yamaha-MDX595-md-sm 维修电路原理图.pdf》由会员分享，可在线阅读，更多相关《Yamaha-MDX595-md-sm 维修电路原理图.pdf（60页珍藏版）》请在收音机爱好者资料库上搜索。

1、MDX-595MDX-595100671SERVICE MANUALMDX-595IMPORTANT NOTICEThis manual has been provided for the use of authorized YAMAHA Retailers and their service personnel.It has been assumed that basic service procedures inherant to the industry, and more specifically YAMAHA Products, are alreadyknown and unders

2、tood by the users, and have therefore not been restated.WARNING:Failure to follow appropriate service and safety procedures when servicing this product may result in personalinjury, destruction of expensive components and failure of the product to perform as specified. For these reasons,we advise al

3、l YAMAHA product owners that all service required should be performed by an authorizedYAMAHA Retailer or the appointed service representative.IMPORTANT:The presentation or sale of this manual to any individual or firm does not constitute authorization, certification orrecognition of any applicable t

4、echnical capabilities, or establish a principle-agent relationship of any form.The data provided is believed to be accurate and applicable to the unit(s) indica ted on the cover. The research, engineering, andservice departments of YAMAHA are continually striving to improve YAMAHA products. Modifica

5、tions are, therefore, inevitableand specifications are subject to change without notice or obligation to retrofit. Should any discrepancy appear to exist, please contactthe distributors Service Division.WARNING:Static discharges can destroy expensive components. Discharge any static electricity your

6、 body may have accumu-lated by grounding yourself to the ground buss in the unit (heavy gauge black wires connect to this buss).IMPORTANT:Turn the unit OFF during disassembly and parts replacement. Recheck all work before you apply power to the unit.MINIDISC RECORDERIC DATA . . . . . . . . . . . . .

7、 . . . . . . . . . . . . . . . . . . .2534BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . .3537TEST POINT WAVEFORMS . . . . . . . . . . . . . . . .3839PRINTED CIRCUIT BOARD . . . . . . . . . . . . . . . .4047SCHEMATIC DIAGRAM . . . . . . . . . . . . . . . . . . .4851PARTS LIST . . . . .

8、. . . . . . . . . . . . . . . . . . . . . . . .5264GREASE APPLICATION DIAGRAM . . . . . . . . . . . .65REMOTE CONTROL TRANSMITTER . . . . . . . . . . .66 CONTENTSTO SERVICE PERSONNEL . . . . . . . . . . . . . . . . . .12REAR PANELS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2SPECIFIC

9、ATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . .3INTERNAL VIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4DISASSEMBLY PROCEDURES . . . . . . . . . . . . . . .48ADJUSTMENT & TEST MODE . . . . . . . . . . . . . . .916SPECIAL TEST MODE . . . . . . . . . . . . . . . . . . .

10、. . . .17ERROR DISPLAY . . . . . . . . . . . . . . . . . . . . . . . .1819TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . .2024POWERNATURAL SOUND MINIDISC RECORDER MDX-595TIMEROFFPLAYRECINPUTLEVEL010PHONESRECEJECTSEARCHSETEDITENTERDELETECANCELCHARA.TITLESCROLLDISPLAYRANDOMS/F REPEAT A-BANALO

11、GREC LEVEL010DIGITALREC LEVEL、認定再生紙使用。This Service Manual uses recycled paper.RadioFans.CN 收音机爱 好者资料库MDX-595MDX-595CAUTION: USE OF CONTROLS OR ADJUSTMENTSOR PERFORMANCE OF PROCEDURESOTHER THAN THOSE SPECIFIEDHEREIN MAY RESULT IN HAZARDOUSRADIATION EXPOSURE.THE MINI DISC RECORDER SHOULD NOT BEADJUSTE

12、D OR REPAIRED BY ANYONE EXCEPTPROPERLY QUALIFIED SERVICE PERSONNEL.AC LEAKAGETESTER OREQUIVALENTEQUIPMENTUNDER TESTINSULATINGTABLEWALLOUTLET TO SERVICE PERSONNEL1Laser Diode PropertiesMaterial:GaAIAsWavelength:785 nmPulse time:Read mode .0.8 mW ContinuousWrite mode .max 10 mW 0.5Smin cycle 1.5SRepet

13、ition1. Critical Components Information.Components having special characteristics are marked Zand must be replaced with parts having specifications equalto those originally installed.2. Leakage Current Measurement (For 120V Models Only).When service has been completed, it is imperative to verifythat

14、 all exposed conductive surfaces are properly insulatedfrom supply circuits.Meter impedance should be equivalent to 1500 ohm shuntedby 0.15F.Leakage current must not exceed 0.5mA.Be sure to test for leakage with the AC plug in bothpolarities.WARNING: CHEMICAL CONTENT NOTICE!The solder used in the pr

15、oduction of this product contains LEAD. In addition, other electrical/electronic and/orplastic (where applicable) components may also contain traces of chemicals found by the California Health andWelfare Agency (and possibly other entities) to cause cancer and/or birth defects or other reproductive

16、harm.DO NOT PLACE SOLDER, ELECTRICAL/ELECTRONIC OR PLASTIC COMPONENTS IN YOUR MOUTH FORANY REASON WHATSOEVER!Avoid prolonged, unprotected contact between solder and your skin! When soldering, do not inhale solder fumesor expose eyes to solder/flux vapor!If you come in contact with solder or componen

17、ts located inside the enclosure of this product, wash your handsbefore handling food.G, B modelsG, B modelsRadioFans.CN 收音机爱 好者资料库MDX-595MDX-595EnglishTHIS PRINTING (SEE POSITION SHOWN IN THE ILLUSTRATION) INFORMS THE USER THAT THE APPARATUSCONTAINS A LASER COMPONENT.THIS LABEL (SEE POSITION SHOWN I

18、N THE ILLUSTRATION) WARNS THAT ANY FURTHER PROCEDURE WILLBRING THE USER INTO EXPOSURE WITH THE LASER BEAM.CAUTION : USE OF CONTROLS, ADJUSTMENTS OR PERFORMANCE OF PROCEDURES OTHER THAN THOSESPECIFIED HEREIN, MAY RESULT IN HAZARDOUS RADIATION EXPOSURE.SwedishDENNA MRKNING (SE FIGUR) UPPLYSER OM ATT D

19、ET I APPARATEN INGR EN LASERKOMPONENT AVTYP KLASS 1.VARNINGSMRKNING (SE FIGUR) FR STRLNING. INGREPP I APPARATEN BR ENDAST FRETAGAS AVFACKMAN MED KNNEDOM OM LASER. APPARATEN INNEHLLER EN LASERKOMPONENT SOM AVGERSTRLNING VERSTIGANDE GRNSEN FR LASERKLASS 1.VARNING : OSYNLIG LASERSTRLNING NR DENNA DEL R

20、 PPNAD OCH SPRREN R URKOPPLAD.STIRRA EJ I STRLEN OCH BETRAKTA EJ STRLEN GENOM OPTISKT INSTRUMENT.DanishDETTE MRKAT ER ANBRAGT SOM VIST I ILLUSTRATIONEN FOR AT ADVARE BRUGEREN OM AT AP-PARATET INDEHOLDER EN LASERKOMPONENT.DETTE MRKAT OM LASEREN ER ANBRAGT P APPARATET SOM EN OPLYSNING OM AT APPARATETI

21、NDEHOLDER ET LASERKOMPONENT.ADVARSEL : USYNLIG LASERSTRLING VED BNING, NR SIKKERHEDSAFBRYDERE ER UDE AF FUNKTION.SE IKKE IND I STRLEN-HELLER IKKE MED OPTISKE INSTRUMENTER.ADVARSEL : USYNLIG LASERSTRLING NR DEKSEL PNES OG SIKKERHEDSLS BRYTES. STIRR IKKE INNI STRLEN ELLER SE DIREKTE MED OPTISKE INSTRU

22、MENTER.FinnishVARO! :AVATTAESSA JA SUOJALUKITUS OHITETTAESSA OLET ALTTIINA NKYMTTMLLE LASER-STEILYLLE.L TUIJOTA STEESEEN LK KATSO SIT OPTISEN LAITTEEN LPI.2 REAR PANELS U model G, B modelsMDX-595MDX-5953 SPECIFICATIONSUnits : mm (inch)435(171/8)266.5(101/2)288(115/16)15(9/16)16(5/8)80(31/8)96(33/4)6

23、.5(1/4)Digital audio systemSystemMiniDisc digital audio systemDiscMiniDiscRecording methodMagnetic field variation overwriteReading methodNon-contact optical pickup (using semiconductor laser)LaserSemiconductor laserLaser Diode PropertiesMaterial: GaAIAsWavelength: 785 nmPulse time:Read mode .0.8 mW

24、 ContinuousWrite mode .max 10 mW 0.5Smin cycle 1.5SRepetitionRecord/playback timeMax. 80 minutes80 minutes (stereo)160 minutes (mono)RevolutionsApprox. 400900 rpm (CLV)Error CorrectionACIRC (Advanced Cross Interleave Reed-solomon Code)Sampling frequency44.1 kHz (32 kHz and 48 kHz signals converted t

25、o 44.1 kHzfor recording)CodingATRAC (Adaptive TRansform Acoustic Coding)Modulation systemEFM (Eight-to-Fourteen Modulation)Number of channels2 (stereo) or 1 (mono, for extended recording)Frequency Response5 20,000 Hz 0.5 dBSignal-to-Noise RatioMore than 99 dB during playbackWow and FlutterBelow meas

26、urable limitInputsLINE IN (REC)Type: pin jackInput impedance: greater than 56 k-ohmsStandard input level: 300 mVDIGITAL IN (OPTICAL) 1/2Type: square optical connector jackOutputsLINE OUT (PLAY)Type: pin jackStandard output level: 2.0 0.5 VrmsDIGITAL OUT (OPTICAL)Type: square optical connector jackPH

27、ONESStandard output level(Input 150 ohms shorted, 20 dB): 300 60 mVGENERALPower SuppliesU model120 V, 60 HzG, B models230 V, 50 HzPower Consumption 20 WDimensions (W x H x D)435 x 96 x 288 mm (17-1/8 x 3-3/4 x 11-5/16)Weight4.1 kg (9 lbs. 1 oz.)AccessoriesRemote Control. 1Audio cord. 2Optical cord.

28、1Batteries (size AA, R6, UM-3). 2Specifications subject to change without notice.U : USA modelB : British modelG : European model* US and foreign patents licensed from Dolby LaboratoriesLicensing Corporation.MDX-595MDX-595Fig. 1 DISASSEMBLY PROCEDURES(Remove parts in disassembly order as numbered.)F

29、ig. 2qqTop CoverwMD Mechanism UnitFront Panelyry4ertuuShield Case (Top)Shield Case (Bottom)MD Mechanism Unit INTERNAL VIEW1. Removal of Top Covera. Remove 4 screws ( q ) and 3 screw ( w ) in Fig. 1.2. Removal of Front Panela. Remove 4 connectors.CB5, CB6, CB7, CB401b. Remove 3 screws ( e ) and 2 scr

30、ews ( r ) in Fig. 1.3. Removal of MD Mechanism Unita. Remove 1 connector.CB1b. Remove 4 screws ( t ) in Fig. 1.c. Remove 4 screws ( y ) in Fig. 2.d. Remove 2 screws ( u ) in Fig. 2.e. Remove 2 screws ( i ) in Fig. 2.rtyqweCB7CB6CB1CB401CB5qPOWER TRANSFORMERwP.C.B. DIGITALeP.C.B. MAIN (1)rPOWER SWITC

31、HtMD MECHANISM UNITyP.C.B. MAIN (2)tSupport (Mechanism)iiMDX-595MDX-5955Disassembly of MD Mechanical UnitRemove the MD mechanical unit according to Steps 1 3 of the disassembly procedure (page 4).Removal of Magnetic Head (Fig.5)1. Remove a screw (A1).Cautiona. When removing the magnetic head, hold i

32、ts base anddo not touch the magnetic head itself or the leafspring.b. Place the magnetic head upside down.c. Use special care so as not to cause any damage tothe magnetic head when installing it.(A1)x11.7x5mmFig. 5( Q2 ) x 1( Q1 ) x 41.7 x 3mm( Q2 ) x 1( Q2 ) x 3(Q2)x1(R1)x41.7x8.9mmRemoval of MD Ma

33、in P.C.B. (Fig. 3)1. Remove 4 screws (Q1).2. Remove 6 connectors (Q2).Removal of MD Mechanism (Fig.4)1. Remove 4 screws (R1).CautionAlmost the entire surface of the cartridge holder iscoated with oil. When removing the mechanism, hold itat the rear end (where marked with arrows in the figure)and avo

34、id touching the oiled surface.Fig. 4Fig. 3Flexible P.C.B. foroptical pickup (*1)MD Main P.C.B.(*1) After pulling off the flexible P.C.B.for the optical pickup from theconnector, cover its end withaluminum foil or the like which iselectrically conductive so as to preventthe optical pickup from beingd

35、amaged by static electricity.FrameCartridge HolderMagnetic HeadMD MechanismBlackGrayGrayMD MechanismLeaf SpringSheet, HeadMDX-595MDX-5956Removal of Cartridge Holder (Fig.6)1. Open the roller arm lever in the arrow direction and move the clamper lever to the rear.2. With a +5V voltage (*2) applied to

36、 the red line side of the blue connector of the loadingmotor, push the rack gear in the arrow direction until the cam plate lever clicks.(*2) A +5V voltage can be obtained from the pluspol (D6.5/5V) of C3 and the groundterminal of the Main P.C.B.3. Remove a screw (B1 and B2, 1 each) from the holder

37、arm and remove the cartridgeholder by moving it to the left.Slider LeverCartridge HolderClamperLeverRack GearRoller Arm LeverLoadingMotorCam PlateLever(B1) x11.7x5mm(B2) x1Fig.6CautionBe careful so that oil does not get on the clamper leverwhich contacts the roller of the roller arm lever.Installati

38、on of Cartridge Holder To install the cartridge holder, the rack of the mechanism must belowered toward the rear. While pushing the roller arm lever outward, push in the slider lever. Apply a +5V voltage to the loading motor (until clicking sound isheard) and push in the rack gear. With the slider l

39、ever and the rack gear installed as described above,fit the cartridge holder as shown in the figure and tighten screws.C3Pluspol (D6.5/5V)MDX-595MDX-5957Removal of Mechanism SW P.C.B. (Fig.7) Once the mechanism switch P.C.B. is removed, it willbe necessary to perform “Adjustment of Lead-in SwitchPos

40、ition”. (See page 13.)1. Remove 2 screws (E1) and then remove the Mecha-nism SW P.C.B.(E1)x11.7x3mm(E1)x11.7x9.5mmFig.7Fig. 8Removal of Sled Motor/Loading Motor (Fig.8)1. Remove 4 screws (D1) and then remove the sledmotor/loading motor.(D1)x21.7x2mm(D1)x21.7x2mmMechanism SW P.C.B.Loading MotorSled m

41、otorCautionUse care so as not to cause any damage to the gear.(The damaged gear will cause abnormal noise to occurwhile searching.)Installation of Mechanism SW P.C.B. Set the mechanism to the eject mode by applying -5Vto the loading motor. Install the mechanism SW P.C.B. so that the boss fitsin the

42、hole in it. Push the lead switch on the mechanism SW P.C.B.toward the optical pickup side (so that looseness in theboss hole is eliminated). Tighten screws and apply thread lock. Measure the lead-in switch position. (See page 13.)(Enter the result in EEPROM.)Lead-in switchMechanism SW P.C.B.(E1)x11.

43、7x9.5mm(E1)x11.7x3mmMDX-595MDX-5958Removal of Optical Pickup Head (Fig.10 and Fig.11)1. Remove 3 screws (F1).CautionUse care so as not to cause any damage to the gear.(The damaged gear will cause abnormal noise to occurwhile searching.)2. Remove a screw (F2).The leaf spring (A) attached to the P.U.

44、will be reusedwhen replacing the pickup. It is not supplied with theoptical pickup.3. Using tweezers or the like, pull the PU shaft from thebase a little. Pull only enough to allow the pickup tocome off. If it is pulled off completely, the oil on theshaft will be scraped off.Be sure to keep oil on t

45、he shaft!Fig. 10Fig.9Removal of Spindle Motor (Fig.9) Once the spindle motor is removed, it will be neces-sary to perform “Pickup Rating”. (See page 14.)1. Remove 3 screws (C1).2. Remove the spindle motor by moving it in the arrowdirection.Cautiona. Be careful not to scratch the gear.(Scratched gear

46、 will produce noises during searching.)b.As the turn-table is magnetized, keep foreign objectsfrom being attracted.(C1)x11.7x2.1mm(C1)x31.7x2.5mm(F1)x31.7x9.5mmTurn TableSpindle MotorOptical Pickup HeadFig. 11Assembly of Optical Pickup When installing the pickup to the MD guide (A), besure to tighte

47、n the leaf spring (A) with it. When installing the pickup to the MD mechanism, fitthe pickup into the MD guide (B) first, match the bossof the MD guide (A) and its hole in the chassis andtighten them with a screw.(F2)x11.4x2.2mmMD Guide (A)PU ShaftLeaf Spring (A)Optical PickupFit the pickup into the

48、 MD guide (B) firstMD Guide (B)MDX-595MDX-595TEST MODE1. How to set to the test mode1) Press the POWER button while pressing the SET/ENTER button and the PLAY/PAUSE button.Version of microprocessor on display (about 1 second)t s m 1 3 * * e * *Version of EEPROM protect data (from 01)Version of micro

49、processor ROM (from 01)“EJECT” on display2) Load either a disc for reproduction or a disc for recording.“AUT YOBI” on displayThis completes setting to the test mode.2. How to set to each modeEvery time the DISPLAY button is pressed, the mode changes. (For operation of each mode, refer to the section

50、describing each mode.)Preparation before Adjustment Test disc-AUTO pre-adjustment - AUTO adjustment - RESULT preparation - RESULT - MANUAL pre-adjustment -MANUAL adjustment - EEPROM setting Extension cable (see connection diagram on page 14.)High reflecting discTDYS1 (SONY) for reproduction (P/No. T