Yamaha-CDX496-cd-sm 维修电路原理图.pdf

CDX-396/496CDX-396/496100707DISPLAY DATA . 12IC DATA . 13-16BLOCK DIAGRAM . 17PRINTED CIRCUIT BOARD . 18-21IC BLOCK . 22WAVEFORMS . 23SCHEMATIC DIAGRAM . 24PARTS LIST . 25-37REMOTE CONTROL TRANSMITTER. 38I CONTENTSTO SERVICE PERSONNEL . 1-2FRONT PANELS . 3REAR PANELS . 4SPECIFICATIONS . 5INTERNAL VIEW . 5DISASSEMBLY PROCEDURES . 6, 7STANDARD OPERATION CHART . 7, 8TEST MODE . 8, 9ERROR MESSAGE. 10, 11IMPORTANT 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.COMPACT DISC PLAYERCDX-396/496RadioFans.CN 收音机爱 好者资料库CDX-396/496CDX-396/4961CAUTION: USE OF CONTROLS OR ADJUSTMENTS OR PERFORMANCE OF PROCEDURES OTHER THAN THOSESPECIFIED HEREIN MAY RESULT IN HAZARDOUS RADIATION EXPOSURE.THE COMPACT DISC PLAYER SHOULD NOT BE ADJUSTED OR REPAIRED BY ANYONE EXCEPT PROPERLYQUALIFIED SERVICE PERSONNEL.WARNING: CHEMICAL CONTENT NOTICE!The solder used in the production of this product contains LEAD. In addition, other electrical/electronicand/or plastic (where applicable) components may also contain traces of chemicals found by theCalifornia Health and Welfare Agency (and possibly other entities) to cause cancer and/or birth defectsor other reproductive harm.DO NOT PLACE SOLDER, ELECTRICAL/ELECTRONIC OR PLASTIC COMPONENTS IN YOUR MOUTHFOR ANY REASON WHATSOEVER!Avoid prolonged, unprotected contact between solder and your skin! When soldering, do not inhalesolder fumes or expose eyes to solder/flux vapor!If you come in contact with solder or components located inside the enclosure of this product, wash yourhands before handling food.1. Critical Components Information.Components having special characteristics are marked and 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 all exposed conductive surfaces are properly insulatedfrom supply circuits.GMeter impedance should be equivalent to 1500 ohm shuntedby 0.15F.GLeakage current must not exceed 0.5mA.GBe sure to test for leakage with the AC plug in bothpolarities.I TO SERVICE PERSONNELPROTECTION OF EYES FROM LASER BEAM DURING SERVICINGThis set employs a laser. Therefore, be sure to carefullyfollow the instructions below when servicing .1. Laser Diode PropertiesGMaterial: GaAlAsGWavelength: 780 nmGEmission Duration : ContinuousGLaser Output: max. 44.6 W* This output is the value measured at a distance ofabout 200 mm from the objective lens surface onthe Optical Pick-up Block.2. When checking the laser diode emission, keep youreyes more than 30 cm away from the objective lens.RadioFans.CN 收音机爱 好者资料库CDX-396/496CDX-396/4962 R, G, B model G, B modelsCLASS 1 LASER PRODUCTEnglishTHIS 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 AV TYPKLASS 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: BETRAKTA EJ STRLEN.DanishDETTE MRKAT ER ANBRAGT SOM VIST I ILLUSTRATIONEN FOR AT ADVARE BRUGEREN OM AT APPARATETINDEHOLDER EN LASERKOMPONENT.DETTE MRKAT OM LASEREN ER ANBRAGT P APPARATET SOM EN OPLYSNING OM AT APPARATETINDEHOLDER ET LASERKOMPONENT.ADVARSEL : INDGREB BOR KUN FORETAGES AF EN FAGMAND DA DER ER RISIKO FOR RADIOAKTIVSTRLING.ADVARSEL : USYNLIG LASERSTRLING VED BNING.UNDG UDSAETTELSE FOR STRLING.FinnishVARO! :AVATTAESSA OLET ALTTIINA NKYMTTMLLE LASERSTEILYLLE. L KATSO STEESEEN.CDX-396/496CDX-396/4963I FRONT PANELSCDX-396CDX-496CDX-396CDX-496OUTPUT LEVEL+-39CDX-396/496CDX-396/496I REAR PANELS4U, C modelsR modelA modelG, B models240V240V120V120V220V220V110V110VCDX-396/496CDX-396/496G DIMENSIONUnit : mm (inch)I SPECIFICATIONSOutput Level1kHz, 0dB2.0 0.5VrmsSignal to Noise Ratio (EIAJ)105dBDynamic Range95dBHarmonic Distortion+Noise (1kHz)0.003%Frequency Response2Hz 20kHz0.5dBPower RequirementsU, C models (CDX-396 ONLY)120V AC 60HzB, G models230V AC 50HzA model (CDX-396 ONLY)240V AC 50HzR model110/120/220/240V AC 50/60HzPower Consumption9WDimensions (W x H x D)435 x 96 x 277mm(17-1/8 x 3-3/4 x 10-7/8)Weight3.7kg (7 lbs 11 oz)FinishCDX-396CDX-396BLBlack colorCDX-396TITitanium colorCDX-496CDX-496BLBlack colorCDX-496TITitanium colorAccessoriesPin plug cordRemote control transmitter(Dry-cell : x 2: Size “AA”, R06)5671MAIN P.C.B. (3)2MAIN P.C.B. (6)3MAIN P.C.B. (1)4MAIN P.C.B. (4)5CD MECHANISM UNIT6MAIN P.C.B. (2)7MAIN P.C.B. (5) (CDX-496 ONLY)I INTERNAL VIEW5*Specifications are subject to change without notice.U .U. S. A. modelC .Canadian modelA . Australian modelB . British modelG . European modelR . General model435(17-1/8)16(5/8)96(3-3/4)5.5(3/16)261.5(10-5/16)6(1/4)277(10-7/8)80(3-1/18)CDX-396/496CDX-396/49621441333CD MchanismUnitFront PanelTop CoverLidI DISASSEMBLY PROCEDURES (Remove parts in disassembly order as numbered.)1. Removal of Top Covera. Remove 4 screws ( 1 ) and 3 screws ( 2 ) in Fig. 1.b. Lift the Top Cover at the rear and move it rear-ward.2. Removal of Front Panela. Press the OPEN/CLOSE key and open the tray.Then remove the Lid attached to the front edge ofthe tray in Fig. 2.Press the OPEN/CLOSE key and close the tray,then unplug the power cord.b. Remove 2 connectors (CB202, CB301) in Fig. 2.c.Remove a connector (CB100) in Fig. 2. (CDX-496only)d. Remove 5 ( 3 ) screws in Fig. 1.e.Remove 2 hooks and then pull the Front Panel for-ward.3. Removal of CD Mechanism Unita. Remove 3 connectors (CB1, CB2, CB3) in Fig. 2.b. Remove 4 screws ( 4 ) in Fig. 1.6Fig. 2Fig. 3Fig. 4Stopper5Stopper Pin6Sub Chassis (S)77Chucking UnitStopperHookDrive GearDrive Unit5. Removal of Pick-up Heada. Remove 2 screws ( 6 ) in Fig. 4.b. Remove 4 screws ( 7 ) and then remove the DriveUnit in Fig. 4.c. Remove the gear A in Fig. 5.d. Pull out the Sled Shaft in Fig. 5.e. Remove the Pick-up Head.Fig. 1CB200CB101PJ100CB1CB2CB3CB301CB100CB202CB2034. Removal of Tray Unita. Remove 2 screws ( 5 ) and then remove theChucking Unit in Fig. 3.b. Remove 1 hook and then remove the Stopper Pinin Fig. 3.c. Rotate the Drive Gear and then open the Tray Unitin Fig. 3.d. Detach the Stoppers on both sides and then pullout the Tray in Fig. 3.3CDX-396/496CDX-396/4967I STANDARD OPERATION CHARTDisc TablePick-up HeadGear ASled Shaft19.4 0.2mmStopperCheck that the disc table height is as specified below.Fig. 5APress OPEN/CLOSE key.Forced feed return operationClamp down operationTray openTracking offset auto ADJFocus offset auto ADJLoad a disc.Press PLAY key or push the tray.Tray closedDisc mechanism unit clamped up.Feed inward switch reached.Laser ONDisc scanFocus gain rough ADJFocus search operationFocus lock servo ONSpindle motor accelerated.Tracking servo ONSpindle servo ONFeed servo ON appears in the TIME indicator.TRV signal is output until detection of LIMIT switch.Stop after detection of LOADING switch.Proceeds to next step after detection of LOADING switch.if FLSW = L (IC300, 23 pin)Proceeds To Next Step.LDON = H (IC1, 5 pin)FLOCK = H L (IC300, 18 pin)TLOCK = H L (IC300, 19 pin)POWER ONIf a disc is not loaded, 0:00 appears in the time indicator.VCO lockOPENCDX-396/496CDX-396/496I TEST MODE(1) Turning ON the POWER while pressing the keys PLAY/PAUSE and STOP will set to the TEST mode.(When the TEST mode is set, all indicators light for 1 second.)A8Tracking gain rough ADJ - * Data f etch cycle -After searching the beginning, PLAY starts.- PLAY -MUTE ONTRACK searchMUTE ONSpindle motor stop: MUTE OFF = H L (Q201 Collector) 0:00 appears in the time indicator.Tracking balance ADJ (only tray OPEN/CLOSE)Focus balance ADJFocus gain ADJTracking gain ADJ* TOC READTRACK NO. 1 is searched.Set to SEARCH by means of, key.After searching the beginning, MUTE is cancelled.- PLAY -Press the STOP key.Laser OFFForced feed return- STOP -: MUTE ON = L H: MUTE OFF = H L 0:00 appears in the time indicator.: LDON = H L (IC1, 5 pin)CDX-396/496CDX-396/4969(2) Shown below are the panel key and remote control transmitter functions in the TEST mode.GFunction List of Panel keysNote) Traverse servo means the same as feed servo.PANEL KEYOPEN/CLOSE(SKIP/SEARCH)(SKIP/SEARCH)+101234567890FUNCTIONTray open/close.FOON, TRON, SPON, TVON(FEON).All stop. (Focus, spindle, feed, laser, tray, etc.) Initializes FL displayInner circumference traverse servo.Outer circumference traverse servo.Rotating the mode of coefficients. (Coefficient mode - Coefficient setting - product mode)Pressing twice will set to the product mode.Returns to product mode.Auto adjustment mode 1 (TR-off set, FO-off set, FO-rough gain adjustment)Auto adjustment mode 2 (TR-balance, TR-rough gain adjustment)Auto adjustment mode 3 (FO-fine gain, TR-fine gain, FO-balance adjustment)1 TRACK KICK () continuously(Coefficient set up mode : address down)1 TRACK KICK (+) continuously(Coefficient set up mode : address up)30 TRACK KICK () continuously(Coefficient set up mode : upper digit down)30 TRACK KICK (+) continuously(Coefficient set up mode : upper digit up)150 TRACK KICK () continuously(Coefficient set up mode : lower digit down)150 TRACK KICK (+) continuously(Coefficient set up mode : lower digit up)CUSTOM CODE = (79)xKEYOPEN/CLOSEREPEATTIMEINDEXPROGCLEARSPACE0123456789+10RANDOMDIMMERTAPESYNCHROPEAKCODE010204050607080A0B0C0D0F101112131415161718191A1B1E555657585DFUNCTIONTray open/close.PLAY (FOON, TRON, TVON(FEON), SPON)Inner circumference traverse servo.Inner 10 tracks kick continuously.Outer 10 tracks kick continuously.Outer circumference traverse servo.FOON, TROF (Enter focus search if focus servo is off.)Checks FL display. (88 8888 - goes out - All lamps.)FOON, TROF, TVOF(FEOF) (Enter focus search if focus servo is off.)Rotates or accelerates spindle.Decelerates spindle. (checking EFM pattern and reflected STAT)FOOF, TROF, TVOF(EFOF)150 TRACK KICK (+) continuously(Coefficient set up mode : lower digit up)Returns to product mode. (tray inoperative.)Auto adjustment mode 1 (TR-off set, FO-off set, FO-rough gain adjustment)Auto adjustment mode 2 (TR-balance, TR-rough gain adjustment)Auto adjustment mode 3 (FO-fine gain, TR-fine gain, FO-balance adjustment)1 TRACK KICK () continuously(Coefficient set up mode : address down)1 TRACK KICK (+) continuously(Coefficient set up mode : address up)30 TRACK KICK () continuously(Coefficient set up mode : upper digit down)30 TRACK KICK (+) continuously(Coefficient set up mode : upper digit up)150 TRACK KICK () continuously(Coefficient set up mode : lower digit down)Rotating the mode of coefficients.SPON (Spindle servo on.)Checks FL display. (All lamps - 88 8888 - goes out.)FOON, TROF, TVOF(EFOF) (Enter focus search if focus servo is off.)All stop. (Focus, spindle, traverse, laser, tray, etc.)Spindle free (off)TV(Feed) REV -GFunction List of Remote Control TransmitterCDX-396/496CDX-396/496I ERROR MESSAGE(1) When operation is terminated in an abnormal condition (stop or open), pressing STOP on the remote control whilepressing STOP on the panel will set to the error message display enable mode.(2) Shown below is an example of display. (E-73 as an example)10(3) This function stays effective till the power is turned OFF. (It is cleared at OFF.)(4) Listed in the table below are error messages.ERROR MESSAGESEX 0EX 1E7 1E7 2E7 3E9 4E 5EX 7EX 8ErrDESCRIPTIONData cannot be read after finishing search.Data cannot be read during PLAY(X=0), PAUSE(X=3), or SCAN(X=2).At the start, tracking servo is not effective.At the start, spindle servo PLL is not effective.At the start, data cannot be read.Close switch does not work with tray closed.Open switch does not work with tray open.Traverse(Feed) inner switch does not work.Recovery action fails after focus drop.MN35511AL does not give response of SENSE, with resetting by theunits microcomputer.GError Messages List*No. for each state(meaning of X)PLAYX=0SCANX=2PAUSEX=3PEAK SEARCHX=4SEARCHX=5STARTX=7STOPX=8LOADINGX=9OPENX=-NO DISCX=C1) Error Code TroubleshootingError code X0 , X1 , 73. Data cannot be read.Error codes 94 , 5. Poor tray loading operation.YESNODoes trayoperate whenOPEN/CLOSE key ispressed?Motor defective.Control IC (IC2) defective.Microcomputer defective.Loading switch defective.Poor Microcomputerdefective.YESNOIs disc dirty orscratched?Pick-up positionWithin disc rangePick-up defective, Spindle systemdefective (Motor fails to run, etc.).Outermost(on mirror surface)Check by usinganother disc.TRACKINGservo defective.FEED servo defective.Error code X7. FEED operation defective. (Limit switch fails)YESNOIs forcedfeed operationavailable in TESTmode?FEED servo defective.Microcomputer defective.Y.OutwardT.InwardFeed limit switchdefective.Microcomputer defective.Error code X8. Focus drops.YESNOIs disc dirty orscratched?Pick-up positionFOCUS servo defective.Pick-up defective.Within disc rangeOutermost(on mirror surface)Check by usinganother disc.TRACKING servodefective.FEED servo defective.CDX-396/496CDX-396/496112) Troubleshooting from System Ma