Fostex-CR200-cd-sm维修电路原理图.pdf

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1、Service ManualCompact Disc RecorderCR200ModelDANGER - LASER RADIATION WHEN OPEN.AVOID DIRECT EXPOSURE TO BEAM.RadioFans.CN 收音机爱 好者资料库SAFETY INSTRUCTIONSRead instructions - All the safety and operating instruc-tions should be read before the appliance is operated.Retain instructions - The safety and

2、operating instructionsshould be retained for future reference.Heed warnings - All warnings on the appliance and in theoperating instructions should be adhered to.Follow instructions - All operating and use instructionsshould be followed.Water and Moisture - The appliance should not be usednear water

3、 - for example, near a bathtub, washbowl,kitchen sink, laundry tub, in a wet basement, or near aswimming pool, and the like.Carts and Stands - The appliance should be used onlywith a cart or stand that is recommended by the manufac-turer.An appliance and cart combination should be moved withcare. Qu

4、ick stops, excessive force, and uneven surfacesmay cause the appliance and cart combination to over-turn.Wall or Ceiling Mounting - The appliance should bemounted to a wall or ceiling only as recommended by themanufacturer.Ventilation - The appliance should be situated so that itslocation or positio

5、n does not interfere with its proper ven-tilation. For example, the appliance should not be situ-ated on a bed, sofa, rug, or similar surface that may blockthe ventilation openings; or, placed in a built-in installa-tion, such as a bookcase or cabinet that may impede theflow of air through the venti

6、lation openings.Heat - The appliance should be situated away from heatsources such as radiators, heat registers, stoves, or otherappliances (including amplifiers) that produce heat.Power Sources - The appliance should be connected to apower supply only of the type described in the operatinginstructi

7、ons or as marked on the appliance.Grounding or Polarization - The precautions that shouldbe taken so that the grounding or polarization means ofan appliance is not defeated.Power Cord Protection - Power supply cords should berouted so that they are not likely to be walked on orpinched by items place

8、d upon or against them, payingparticular attention to cords at plugs, convenience recep-tacles, and the point where they exit from the appliance.Cleaning - The appliance should be cleaned only as rec-ommended by the manufacturer.Nonuse Periods - The power cord of the appliance shouldbe unplugged fro

9、m the outlet when left unused for a longperiod of time.Object and Liquid Entry - Care should be taken so thatobjects do not fall and liquids are not spilled into the en-closure through openings.Damage requiring Service - The appliance should be ser-viced by qualified service personnel when:A.B.C.D.E

10、.Servicing - The user should not attempt to service the ap-pliance beyond that described in the operating instruc-tions. All other servicing should be referred to qualifiedservice personnel.REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.CAUTIONRISK OF ELECTRIC SHOCKDO NOT OPENCAUTION: TO REDUCE THE

11、RISK OF ELECTRIC SHOCK,DO NOT REMOVE COVER (OR BACK).NO USER-SERVICEABLE PARTS INSIDE.TO PREVENT ELECTRIC SHOCK, MATCHWIDE BLADE OF PLUG TO WIDE SLOT,FULLY INSERT.POUR VITER LES CHOCS LECTRIQUES,INTRODUIRE LA LAME LA PLUS LARGE DELA FICHE DANS LA BORNE CORRE-SPONDANTE DE LA PRISE ET POUSSERJUSQU AU

12、FOND.CAUTION:ATTENTION:The exclamation point within an equilateraltriangle is intended to alert the user to thepresence of important operating and mainte-nance (servicing) instructions in the literatureaccompanying the appliance.The lightening flash with arrowhead symbol,within an equilateral triang

13、le, is intended toalert the user to the presence of uninsulated“dangerous voltage” within the products en-closure that may be of sufficient magnitude toconstitute a risk of electric shock to persons.“WARNING”“TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK,DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOIS-T

14、URE.”1.2.3.4.5.6.7.8.The power supply cord or the plug has been damaged;orObjects have fallen, or liquid has been spilled into theappliance; orThe appliance has been exposed to rain; orThe appliance does not appear to operate normally orexhibits a marked changed in performance; orThe appliance has b

15、een dropped, or the enclosuredamaged.9.10.11.12.13.14.15.16.17.RadioFans.CN 收音机爱 好者资料库3CR200TABLE OF CONTENTSParts marked with this sign are safety critical components. They must always be replaced with identicalcomponents. Refer to the Fostex Parts List and ensure exact replacement.!CAUTION47101239

16、6577851. CD-R THEORY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2. SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3. CONTROLS, INDICATORS & CONNECTORS . . . . . . . . . . . . . . . . .4. ADJUSTING PROCEDURES . . . . . . .

17、 . . . . . . . . . . . . . . . . . . . . . .5. ADDITIONAL INFORMATION . . . . . . . . . . . . . . . . . . . . . . . .6. EXPLODED VIEW, PCB ASSEMBLY & PARTS LIST . . . . . . . .7. CIRCUIT & BLOCK DIAGRAMS. . . . . . . . . . . . . . . . . . . . . . . . .8. TROUBLESHOOTING . . . . . . . . . . . . . . .

18、 . . . . . . . . . . . . . . .NOTESAdjusting procedures are given in this manual which also includes a Parts List and circuit diagrams toassist the service technician in maintaining the Model CR200.The following accessory is supplied with CR200 as a standard.*Following is the packing material for th

19、e Model CR200.Carton, inner, CR200: 8228718000Carton, outer, CR200: 8228897000Packing, L, CR200: 8228443000Packing, R, CR200: 8228444000*Owners manual, CR200: 8288407000 (for export model)Remote control unit Model 8317: 8270829000Audio cable (L : 1.2m): 8276912000Power cable: 8276910000 (for USA mod

20、el): 8276911000 (for EUR model)4CR2001. CD-R THEORY1-1. Physical layout compared to CDThe conventional CD and CD-R discs basically have the samephysical layout. However, as you can see from the Fig. 1,comparing to the conventional CD, the CD-R disc also has so-called “minus” areas such as PCA (Power

21、 Calibration Area) andPMA (Program Memory Area) where the temporary informationis recorded. Unrecorded, blank discThe information area is located next to the clamping area and thecenter hole. This area contains a pregroove with CLV (ConstantLinear Velocity) clocking information and a time code. Part

22、ially recorded discThe CD-R system gives the opportunity to record a disc in severalactions at a different time on a different recorder. After the firstrecording, the information area is divided into five parts as shownbelow and in the right.1: Power Calibration Area (PCA)2: Program Memory Area (PMA

23、)3: Lead-in Area4: Program Area5: Lead-out Area Finalized discAfter finalizing the disc, the CD-R disc will become compatiblewith the RED Book (for regular CD) definitions and specifications.Therefore, it can be played back on conventional CD players. TheInformation Area of a finalized disc consists

24、 of three parts:1: Lead-In Area2: Program Area3: Lead-Out AreaFig. 1 Cross Section of CD-R & CD Disc15min 26min 3344.7max 118120CenterholeClampingareaInformation areaPregroove area with address (ATIP)4650max 11644.7max 118RecordableUser Area+ Lead-out AreaProgramArearecordedpartPCAPMAtemporaryTable

25、Of Contents (TOC)Lead-in Area4650max 116max 118Lead-outAreaProgram Arearecorded partLead-in Areafinal Table of Contents (TOC)Layout of unrecorded CD-R discLayout of partially recorded CD-R discLayout of recorded CD-R disc4650max 116max 118Lead-outArearecorded partTOCLayout of conventional CD discMUS

26、ICMUSICMUSIC5CR2001-2. Pregrooved track wobbling + ATIPWhen manufacturing the CD-R disc, it has been pregrooved. This pregroove in the CD-R disc is not a perfect spiral butis wobbled so that the CD-R disc can be recognized by a CD-R recorder even when it is completely blank.It has many purposes. It

27、not only helps keep the servo on an exact tracking of outgoing spiral but also the demodulatedwobbling frequency contains the time information in digital format (21.05 kHz = 0, 23.05 kHz = 1). These frequencieshave been selected so that the mean frequency is equal to Fs / 2 (= 22.05 kHz). Also the i

28、nterleaved is the manufacturersmeasured default laser power level.Fig. 2 Structure of Pregrooved DiscEvery time the CD-R disc is inserted, one test is performed. Also if you leave the disc in the recorder at power off, a test willbe performed when powering on. This might lead to the situation that t

29、he PCA might be fully used up even if there is aremaining space to record audio signal. The recordings made after the PCA is fully used up will not be optimal in performance.CAUTION :1-3. PCA + consequenceEach recorder has a tolerance in the laser power and the dye from different manufacturers varie

30、s. In order to optimize therecorder / disc combination, there is a PCA (Power Calibration Area) included in the CD-R disk. This area consists of twoparts, the Count Area and Test Area. In the Test Area, test recordings are made, stepping through several power levels. Afterplaying back the recorded t

31、est signal, the optimum level is automatically determined. This value is memorized until the disktray is opened. The Count Area keeps the track on how many of the test areas have been used indicating where to start thenext test. The PCA is designed to accommodate for 100 tests. When the PCA is full,

32、 the default value written in the wobbledgroove is used instead.Fig. 3 Organization of PCA, PMA and Lead-In Area0.6m(track width)1.6m(track distance)22.05 1kHz = 60m10098Test AreaCount AreaPCA4 3 2 198531PMALead InAreaPartition6CR2001-4. CD-R Disc Structure and Bubbling Process1-5. FinalizeIn order

33、to be playable on an ordinal CD-player, the CD-R disc must have a corresponding data for TOC (Table Of Contents).This area is not used until all the recording is completed. Instead, a special area called PMA (Program Memory Area) is used.When the disk is full or all the recording is completed, the d

34、isk can be finalized. This means that the temporary informationin the PMA is checked and transferred to TOC. Now the disk is playable on an ordinal CD player but it will not be recordableany more.The materials of CD-R disc consists of label,protective layer, reflective layer, organic dyelayer and tr

35、ansparent substrate.During recording, the laser is tracing the wobbled groove. When a pit is to be recorded, the laser fires off a high power beamand the organic dye will become black and deformed. This is the way a non-reflective part is created. When a groove isto be recorded, the laser is not fir

36、ed and the high-reflective surface is maintained. If the data word contains successive thesame information (e.g. 111 or 000), the pit will be continuous. When the data word contains changes, the pit - groove statuswill also change.Fig. 5 Recording & Playback PrincipleLabelFig. 4 Cross Section of CD-

37、R disc123456789012345678901234567890121234567890123456123456789012345678901234567890121234567890123456123456789012345678901234567890121234567890123456123456789012345678901234567890121234567890123456123456789012345678901234567890121234567890123456Refective layerUV protective layerOrganic dye layerTra

38、nsparentsubstrateLandGrooveLaser beam Recording Principle Playback PrincipleNO PITSON PITSA high power laser beam is shot.Organic dye becomes blackand pit is created.A low power laser beam is shotand high reflectance is obtained.A low power laser beam is shotand only low reflectance is obtained.7CR2

39、002. SPECIFICATIONSFUNCTIONSSampling rate converterFs : 48 kHz / 32 kHz 44.1 kHzAutomatic disk distinctionTime display switchingSynchronous to one song / All songs / DAT IDREC muteAutomatic power calibrationAutomatic track incrementManual track incrementAutomatic REC PAUSEPreviousEnd section of prev

40、ious track can be reproduced during RECPAUSE mode.Fader in / fader outCan be controlled only by infra-red remote controllerDisk remaining time displaySampling monitorSkip playTrack skip on / offCan be controlled only by main unit keyOne song / all songs program repeatCan be controlled only by infra-

41、red remote controllerProgram playManual searchTrack searchDirect searchCan be controlled only by infra-red remote controllerProgram setting / clearCan be controlled only by infra-red remote controllerInput sensitivity switchSW 1 (+4 dBu / -8 dBu, rear panel)Infra-red remote controller on / off switc

42、hSW 2 (rear panel)Digital out on / off switchSW 2 (rear panel)Copy bit setting switchSW 2 (No restriction / One time only / Prohibited, rear panel)FL DISPLAY CONTENTSPLAYRECPAUSEREPEAT1-REPEATAUTO TRACK No.PROGRAMTOCLevel meterTrack numberInput sampling frequencyElapsed timeRemaining timeTotal timeR

43、emaining record time8CR200GENERALModelCompact disc recorderApplicable discsCDs and CD-RsNumber of channels2 channels (stereo)Power supplyAC 120 V, 60 HzAC 220 230 V, 50 / 60 HzPower consumption21 WWeight (without package)6.2 kg / 13.7 lbsMaximum dimensions482 (W) x 134 (H) x 294 (D) mm18-31/32 (W) x

44、 5-9/32 (H) x 11-9/16 (D) inchAUDIO UNITPlayback (CD)Frequency characteristics4 Hz 20 kHz 1.0 dBS/N83 dB or more (EIAJ)Dynamic range83 dB or more (EIAJ)Total harmonic distortion0.01 % or less (EIAJ)Channel separation90 dB or more (EIAJ)De-emphasis deviation0 1.5 dB or less (EIAJ)Level difference bet

45、ween channels1.0 dB or less (EIAJ)Output voltage2.4 V 0.3 V rmsMonitoring (analog RCA pin input)Frequency characteristics4 Hz 20 kHz 1.0 dBS/N83 dB or more (EIAJ)Dynamic range83 dB or more (EIAJ)Total harmonic distortion0.01 % or less (EIAJ)Maximum input level3.2 V rms or moreMinimum input level0.4

46、V rms or lessRecord & Playback (analog RCA pin input)Frequency characteristics4 Hz 20 kHz 1.0 dBS/N83 dB or more (EIAJ)Dynamic range83 dB or more (EIAJ)Total harmonic distortion0.01 % or less (EIAJ)Monitoring (Digital coaxial input)Frequency characteristics4 Hz 20 kHz 1.0 dBS/N95 dB or more (EIAJ)Dy

47、namic range90 dB or more (EIAJ)Total harmonic distortion0.01 % or less (EIAJ)Maximum input level0.6 V rms or moreMinimum input level0.2 V rms or lessRecord & Playback (Digital coaxial input)Frequency characteristics4 Hz 20 kHz 1.0 dBS/N90 dB (analog) / 105 dB (digital)Dynamic range90 dB (analog) / 9

48、5 dB (digital)Total harmonic distortion0.01 % (analog) / 0.003 % (digital)9CR200INPUT / OUTPUT JACKSAnalog InputXLR-3-31 type (x 2)Standard input level+4 dBu / -10 dBV (switchable)Input impedance10 kRCA type (x 2)Standard input level-10 dBVInput impedance27 k or moreAnalog Output (x 2)RCA typeStanda

49、rd output level-10 dBVLoad impedance10 kDigital InputXLR-3-31 typeIEC958 Part 2 (AES/EBU)RCA typeIEC958 Part 3 (S/P DIF)Optical typeIEC958 Part 3 (S/P DIF)Digital OutputRCA typeIEC958 Part 3 (S/P DIF)Optical typeIEC958 Part 3 (S/P DIF)Parallel remoteDIN 8-pin connector (Outer shell is grounded.)Pin

50、1 : PAUSEPin 2 :Pin 3 : PLAYPin 4 : NCPin 5 : Manual track writePin 6 : RECPin 7 :Pin 8 : STOP10CR2003. CONTROLS, INDICATORS & CONNECTORS1.2.3.4.5.6.7.8.9.10.11.12.13.Power indicatorPower switch POWERInput selector button INPUT SELECTORDigital synchro button DIGITAL SYNCHROFinalize button FINALIZETi