Yamaha-MDXE100-md-sm 维修电路原理图.pdf

MDX-E100MDX-E100100686SERVICE MANUALMDX-E100IMPORTANT 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 understood 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 all 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 technical capabilities, or establish a principle-agent relationship of any form.The data provided is believed to be accurate and applicable to the unit(s) indicated on the cover. The research, engineering, andservice departments of YAMAHA are continually striving to improve YAMAHA products. Modifications 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 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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25-34BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . 35-37TEST POINT WAVEFORMS . . . . . . . . . . . . . . . . 38-39PRINTED CIRCUIT BOARD . . . . . . . . . . . . . . . . 40-47SCHEMATIC DIAGRAM . . . . . . . . . . . . . . . . . . . 48-50PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51-63GREASE APPLICATION DIAGRAM . . . . . . . . . . . .64REMOTE CONTROL TRANSMITTER . . . . . . . . . . .65I CONTENTSTO SERVICE PERSONNEL . . . . . . . . . . . . . . . . . . 1-2REAR PANELS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . .3INTERNAL VIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4DISASSEMBLY PROCEDURES . . . . . . . . . . . . . . . 4-8ADJUSTMENT & TEST MODE . . . . . . . . . . . . . . . 9-16SPECIAL TEST MODE . . . . . . . . . . . . . . . . . . . . . . .17ERROR DISPLAY . . . . . . . . . . . . . . . . . . . . . . . . 18-19TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . 20-24For the system operation of MDX-E100,please refer to Service Manual for theRX-E100 100684 .RadioFans.CN 收音机爱 好者资料库MDX-E100MDX-E100EnglishTHIS PRINTING (SEE POSITION SHOWN IN THE ILLUSTRATION) INFORMS THE USER THAT THE APPARATUSCONTAINS A LASER COMPONENT.THIS LABEL (SEE POSITION SHOWN IN 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 DET 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 PPNAD OCH SPRREN R URKOPPLAD.STIRRA EJ I STRLEN OCH BETRAKTA EJ STRLEN GENOM OPTISKT INSTRUMENT.CAUTION: USE OF CONTROLS OR ADJUSTMENTSOR PERFORMANCE OF PROCEDURESOTHER THAN THOSE SPECIFIEDHEREIN MAY RESULT IN HAZARDOUSRADIATION EXPOSURE.THE MINI DISC RECORDER SHOULD NOT BEADJUSTED OR REPAIRED BY ANYONE EXCEPTPROPERLY QUALIFIED SERVICE PERSONNEL.AC LEAKAGETESTER OREQUIVALENTEQUIPMENTUNDER TESTINSULATINGTABLEWALLOUTLETI TO SERVICE PERSONNEL1Laser Diode PropertiesMaterial:GaAIAsWavelength:785 nmPulse time:Read mode .0.6 mW ContinuousWrite mode .max 10 mW 0.5Smin cycle 1.5SRepetitionCritical Components Information.Components having special characteristics are marked Zand must be replaced with parts having specifications equalto those originally installed.R, G, B modelsR, G, B modelsRadioFans.CN 收音机爱 好者资料库MDX-E100MDX-E1002I REAR PANELSM A modelM B modelDanishDETTE 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 APPARATETINDEHOLDER 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 INN ISTRLEN ELLER SE DIREKTE MED OPTISKE INSTRUMENTER.FinnishVARO! :AVATTAESSA JA SUOJALUKITUS OHITETTAESSA OLET ALTTIINA NKYMTTMLLE LASER-STEILYLLE.L TUIJOTA STEESEEN LK KATSO SIT OPTISEN LAITTEEN LPI.M G modelM R model240VMDX-E100MDX-E1003I SPECIFICATIONSUnits : mm (inch)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 .0.6 mW ContinuousWrite mode .max 10 mW 0.5Smin cycle 1.5SRepetitionRecord/playback timeMax. 74 minutes74 minutes (stereo)148 minutes (mono)RevolutionsApprox. 400-900 rpm (CLV)Error CorrectionACIRC (Advanced Cross Interleave Reed-solomon Code)Sampling frequency44.1 kHz (32 kHz and 48 kHz signals converted to 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 measurable limitInputsLINE IN (REC)Type: pin jackInput impedance: greater than 50 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 jackGENERALPower SuppliesA model240 V, 50 HzG, B models230 V, 50 HzR model110/120/220/240 V, 50/60 HzPower Consumption 16 WDimensions (W x H x D)217 x 88 x 298 mm (8-9/16 x 3-7/16 x 11-3/4)Weight3.0 kg (6 lbs. 9 oz.)AccessoriesRemote Control. 1Audio cord. 2Optical cord. 1Batteries (size AA, R6, UM-3). 2Specifications subject to change without notice.A : Australian modelB : British modelG : European modelR : Genaral model8(5/16)275(10-13/16)12(1/2)11(7/16)298(11-3/4)217(8-9/16)80(3-1/8)88(3-7/16)MDX-E100MDX-E100Fig. 1I DISASSEMBLY PROCEDURES(Remove parts in disassembly order as numbered.)Fig. 2qqTop CoverwMD Mechanism UnitFront Panelyry4etuuShield Case (Top)Shield Case (Bottom)MD Mechanism UnitI INTERNAL VIEW1. Removal of Top Covera. Remove 4 screws ( q ) and 4 screw ( w ) in Fig. 1.2. Removal of Front Panela. Remove 2 connectors.CB101, CB107b. Remove 2 screws ( e ) and 2 screws ( r ) in Fig. 1.3. Removal of MD Mechanism Unita. Remove 1 connector.CB102b. 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.CB107CB102CB101qPOWER TRANSFORMERwP.C.B. DIGITALeP.C.B. MAIN (1)rP.C.B. MAIN (2)rMD MECHANISM UNITtFrame (Mechanism)iieqtwrwe(Bind Head B-tite)(Bind Head S-tite)MDX-E100MDX-E1005Disassembly 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 its 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 Main 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 avoid 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 beingdamaged by static electricity.FrameCartridge HolderMagnetic HeadMD MechanismBlackGrayGrayMD MechanismLeaf SpringSheet, HeadMDX-E100MDX-E1006Removal 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 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 positive lead (D6.5/5V) of C135 and theground terminal of the Main P.C.B.3. Remove a screw (B1 and B2, 1 each) from the holder 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.Installation 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 to the loading motor (until a clicking sound is heard) andpush in the rack gear. With the slider lever and the rack gear installed as described above,fit the cartridge holder as shown in the figure and tighten the screws.C135Positive lead (D6.5/5V)MDX-E100MDX-E1007Removal 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 SwitchPosition”. (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 motorCautionUse 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. by aligning the holein the P.C.B. onto the guide-pin. Push the lead switch on the Mechanism SW P.C.B.toward the optical pickup side (so that looseness in theguide-pin 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)x11.7x9.5mm(E1)x11.7x3mmGuide-pinMDX-E100MDX-E1008Removal 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. 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 the 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 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 tighten 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 MD guide (B) firstMD Guide (B)MDX-E100MDX-E100TEST MODE1. How to set to the test mode1) Press the POWER button while pressing the INPUT button and the STOP button.Version of microprocessor is displayed for about 1 second, as shown below.t s m 1 3 * * e * *Version of EEPROM protect data (from 01)Version of microprocessor 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 (REMOCON) is pressed, the mode changes. (For operation of each mode, refer to thesection describing each mode.)Preparation before AdjustmentG Test disc-AUTO pre-adjustment - AUTO adjustment - RESULT preparation - RESULT - MANUAL pre-adjustment -MANUAL adjustment - EEPROM settingG Extension cable (see connection diagram on page 14.)High reflecting discTDYS1 (SONY) for reproduction (P/No. TX945850)Low reflecting discCommercially available mini disc for recordingLow reflecting discMMD-318 for pre-adjustment (P/No. AAX04890)TypeTest disc1. Extension P.C.B. for servicingTX9462302. 2-pin extension connector for servicingTX9462003. 6-pin extension connector for servicingTX9462104. 5-pin flat cable for servicingTX9461905. 28-pin flat cable for servicingTX946220TypePart No.3. How to cancel test modeCaution) The AUTO pre-adjustment and AUTO adjustment modes are used for adjustment during servicing. Other modesare used when checking the specific measured values and adjusted values or when changing the set value and theadjusted value. Note that use of other modes will rewrite RAM and EEPROM.1) Finish the AUTO pre-adjustment and AUTO adjustment. ( “COMPLETE” appears on the display)2) Press the REC/PAUSE button (REMOCON). ( “TEST END” appears on the display)3) Eject the disc by pressing the EJECT button.4) Turn off the power.GWhen using a new combination of a mechanical pickup and an MD P.C.B. after a repair or for some otherreason, make sure to set to the TEST mode and perform AUTO pre-adjustment and AUTO adjustment accord-ing to the following procedure.1) Set to