Fostex-VC8-adat-sm维修电路原理图.pdf

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Fostex-VC8-adat-sm维修电路原理图.pdf

Service ManualModelVC-8ADAT/ANALOG ConverterRadioFans.CN 收音机爱好者资料库SAFETY INSTRUCTIONSCAUTIONRISK OF ELECTRIC SHOCKDO NOT OPENTO 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 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 triangle, is intended toalert the user to the presence of uninsulated“dangerous voltage” within the products enclo-sure that may be of sufficient magnitude toconstitute a risk of electric shock to persons.“WARNING”“TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DONOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE.”CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK,DO NOT REMOVE COVER (OR BACK).NO USER-SERVICEABLE PARTS INSIDE.REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.1.Read instructions - All the safety and operating instructionsshould be read before the appliance is operated.2.Retain instructions - The safety and operating instructionsshould be retained for future reference.3.Heed warnings - All warnings on the appliance and in the oper-ating instructions should be adhered to.4.Follow instructions - All operating and use instructions shouldbe followed.5.Water and Moisture - The appliance should not be used nearwater - for example, near a bathtub, washbowl, kitchen sink,laundry tub, in a wet basement, or near a swimming pool, andthe like.6.Carts and Stands - The appliance should be used only with acart or stand that is recommended by the manufacturer.An appliance and cart combination should be moved withcare. Quick stops, excessive force, and uneven surfacesmay cause the appliance and cart combination to overturn.7.Wall or Ceiling Mounting - The appliance should be mounted toa wall or ceiling only as recommended by the manufacturer.8.Ventilation - The appliance should be situated so that its lo-cation or position does not interfere with its proper ventila-tion. For example, the appliance should not be situated on abed, sofa, rug, or similar surface that may block the ventila-tion openings; or, placed in a built-in installation, such as abookcase or cabinet that may impede the flow of air throughthe ventilation openings.9.Heat - The appliance should be situated away from heatsources such as radiators, heat registers, stoves, or other ap-pliances (including amplifiers) that produce heat.10.Power Sources - The appliance should be connected to apower supply only of the type described in the operating in-structions or as marked on the appliance.11.Grounding or Polarization - The precautions that should betaken so that the grounding or polarization means of an appli-ance is not defeated.12.Power Cord Protection - Power supply cords should be routedso that they are not likely to be walked on or pinched by itemsplaced upon or against them, paying particular attention tocords at plugs, convenience receptacles, and the point wherethey exit from the appliance.13.Cleaning - The appliance should be cleaned only as recom-mended by the manufacturer.14.Nonuse Periods - The power cord of the appliance should beunplugged from the outlet when left unused for a long period oftime.15.Object and Liquid Entry - Care should be taken so that objectsdo not fall and liquids are not spilled into the enclosure throughopenings.16.Damage requiring Service - The appliance should be servicedby qualified service personnel when:A.The power supply cord or the plug has been damaged;orB.Objects have fallen, or liquid has been spilled into theappliance; orC.The appliance has been exposed to rain; orD.The appliance does not appear to operate normally orexhibits a marked changed in performance; orE.The appliance has been dropped, or the enclosure damaged.17Servicing - The user should not attempt to service the appli-ance beyond that described in the operating instructions. Allother servicing should be referred to qualified service personnel.RadioFans.CN 收音机爱好者资料库VC-83TABLE OF CONTENTSNOTES* Parts List and circuit diagrams are given in this manual to assist the service technician inmaintaining the Model VC-8.* The following accessories are supplied with VC-8 as the standard accessories.Owners manual, VC-8, MLT: 8288444000AC adaptor AD-12A: 8270727003 (for USA/CND): 8270727006 (for EUR): 8270727007 (for UK): 8270727010 (for JPN)* Following is the packing material for the Model VC-8.PACK, SIDE, L, DE-1: 8228454000PACK, SIDE, R, DE-1: 8228455000CARTON, INNER, VC-8: 8228727000CARTON, OUTER, VC-8: 82289060001. SPECIFICATIONS.42. CONTROLS, INDICATORS AND CONNECTORS.53. EXPLODED VIEW.64. PARTS LIST.85. PCB PATTERN DRAWING.106. CIRCUIT DIAGRAMS .12CAUTIONParts marked with this sign are safety critical components. They must always be replacedwith identical components. Refer to the Fostex Parts List and ensure exact replacement.VC-841. SPECIFICATIONS (Specification Unit : 0 dBV = 1 Vrms)INPUT 18ConnectorRCA pin jackInput Impedance20k or moreInput Level-10dBVOUTPUT 18ConnectorRCA pin jackLoad Impedance10k or moreOutput Level-10dBVDATA IN/OUTConnectorSquare shape opticalFormatIEC60958 (S/P DIF)ALESIS Proprietary Multi Channel Optical InterfaceWORD INConnectorBNC typeInput ImpedanceTerminate switch ON: 75Terminate switch OFF : Hi impedanceInput LevelHi Level : 3.55VLo Level : 01VDIGITAL SECTIONQuantization20-bit linearAD Converter20 bit 64 times over sampling modulationDA Converter20 bit 128times over sampling modulationSampling FrequencyINT mode: 44.1kHzOPTICAL/WORD mode : 3248kHzCHARACTERISTICSOverall Frequency Responce+1, -2dB (20Hz20kHz)Dynamic Range (overall)90dB or moreT.H.D.0.008% or less (at 1kHz,+2dB)Channel Separation80dB or more (at 1kHz)S/N (overall)90dB or morePhase Difference between Channel20 or lessClick NoisePower ON/OFF : -20dBV or lessGENERALDimensions220 (W) x 43 (H) x 200 (D) mmWeight1.0kg (Excluding accessories)Power SupplyDC12V, 600mA, Exclusive AC Adaptor (AD-12A)* Specifications and appearance are subjects to change without notice for product improvement.* Adat and the marks are trademarks of Alesis Corporation.VC-852. CONTROLS, INDICATORS AND CONNECTORS1.WORD IN terminate switch2.LOCKED LED3.CLOCK select switch4.ANALOG INPUT MODE switch5.DIGITAL MODE select switch6.POWER switch7.POWER LED8.DC IN jack Center: Plus +9.ANALOG INPUT connectors 18 RCA10.ANALOG OUTPUT connectors 18 RCA11.WORD IN connector BNC12.DIGITAL INPUT connectors Square shape optical13.DIGITAL OUTPUT connectors Square shape optical75OFFONANALOG INPUT MODECLOCKDIGITAL MODEADAT/ANALOG CONVERTERPOWERWORD1-41-81-2ONSTBYINT(44.1k)OPTICALLOCKEDS/P DIFADATOPTICAL5432167AD-12A ONLYINOUTWORD INDIGITALOUTIN5432154321ANALOG76768812VDC INOPTICAL8910111312VC-863. EXPLODED VIEW12354B3x6CZnB3x6BZnBBT3x8BZnBBT3x8BZnBBT3x8BZnBBT3x8BZnBBT3x8BZnBBT3x8BZnBBT3x8BZnVC-87Ref. No.Part No.Description18221288000PANEL ,TOP, DE-128270727003AC ADAPTOR, AD-12A, USA/CND8270727006AC ADAPTOR, AD-12A, EUR8270727007AC ADAPTOR, AD-12A, UK8270727010AC ADAPTOR, AD-12A, JPN38274201000PCB_ASSY, VC-848221291000CHASSIS, VC-858221290000PANEL, FRONT, VC-88260561000FOOT_ASSY, SCAUTION :The “PARITY SW (S001)” on the MAIN PCB assy must be set “ON”.VC-88 MAIN PCB ASSYRef. No.Part No.Description8274201000PCB_ASSY, VC-8B1018251525200PLAIN_PCB, VC-8ICsRef. No.Part No.DescriptionU0018236541610ST, AN, REGULATOR, UPD29M10TU002004 8236540301ST, AN, REGULATOR, L78M05T-TLU0058236545904ST, TSSOP, 74VHCU04U0068236085000QFP, DG, GATE_ARRAY, DIFU0078236502500ST, AN, RESET, NJM2103MU008, 0098236545163ST, TSSOP, TC74VHC163U010, 0118236545153ST, TSSOP, TC74VHC153U0128236503400ST, DG, VCO, TC9246FU013, 0148236570101ST, DG, DRIVER, DTC114EKU015017 8236545074ST, TSSOP, 74VHC74U0188236545000ST, TSSOP, 74VHC00U0198236545161ST, TSSOP, 74VHC161U0208236545086ST, TSSOP, 74VHC86U021, 0228236570101ST, DG, DRIVER, DTC114EKU0238236570801ST, DG, DRIVER, DTB114TKU0248236545074ST, TSSOP, 74VHC74U0258236545904ST, TSSOP, 74VHCU04U0268236503400ST, DG, VCO, TC9246FU0278236570401ST, DG, DRIVER, DTA114EKU029, 0308236545157ST, TSSOP, 74VHC157U0318236545000ST, TSSOP, 74VHC00U0328236541300ST, AN, DC-DC, NJM2360AMU034, 0358236570401ST, DG, DRIVER, DTA114EKU101801 8236505011ST, AN, OPAMP, NJM2115M(TEI)U151451 8236541700ST, DG, ADDA, AK4522U153453 8236541200ST, AN, OPAMP, NJM4565MU157857 8236570201ST, DG, DRIVER, DTC314TKDIODEsRef. No.Part No.DescriptionD0018234101400OPT, VT, LED, GRN, LT3K8BD0028234502800D, ST, DAN202KD0038234750600D, ST, RB400DD004nonD0058234202700OPT, V, LED, GRN-RED, GL3ED8D006, 0078234502800D, ST, DAN202KD0088234108400D, VT, SCHOTTKEY, EK03WD0090118234502800D, ST, DAN202KRESISTORsRef. No.Part No.DescriptionR0018230500681ST, CARBON, 1/10W, 680, 5%R0028230500101ST, CARBON, 1/10W, 100, 5%R0038230500332ST, CARBON, 1/10W, 3.3K, 5%R0048230500222ST, CARBON, 1/10W, 2.2K, 5%R0058230500105ST, CARBON, 1/10W, 1M, 5%R0068230500000ST, CARBON, 1/10W, 0, 5%R0078230500101ST, CARBON, 1/10W, 100, 5%R0088230500561ST, CARBON, 1/10W, 560, 5%RESISTORsRef. No.Part No.DescriptionR0098230500331ST, CARBON, 1/10W, 330, 5%R0108230500101ST, CARBON, 1/10W, 100, 5%R0110138230500103ST, CARBON, 1/10W, 10K, 5%R0148230500101ST, CARBON, 1/10W, 100, 5%R0158230500751ST, CARBON, 1/10W, 750, 5%R0168230500472ST, CARBON, 1/10W, 4.7K, 5%R017nonR0188230500331ST, CARBON, 1/10W, 330, 5%R019nonR020, 0218230500101ST, CARBON, 1/10W, 100, 5%R022nonR0238230500102ST, CARBON, 1/10W, 1K, 5%R024, 0258230500103ST, CARBON, 1/10W, 10K, 5%R0268230508101R, ST, ARRAY, 100 x4, 5%, CN1J4R0278230500101ST, CARBON, 1/10W, 100, 5%R0298230500103ST, CARBON, 1/10W, 10K, 5%R0308230500222ST, CARBON, 1/10W, 2.2K, 5%R031, 0328230500102ST, CARBON, 1/10W, 1K, 5%R033, 0348230500104ST, CARBON, 1/10W, 100K, 5%R0358230500561ST, CARBON, 1/10W, 560, 5%R0368230500152ST, CARBON, 1/10W, 1.5K, 5%R0378230500224ST, CARBON, 1/10W, 220K, 5%R038, 0398230500101ST, CARBON, 1/10W, 100, 5%R0408230500681ST, CARBON, 1/10W, 680, 5%R0410438230500101ST, CARBON, 1/10W, 100, 5%R0448230500681ST, CARBON, 1/10W, 680, 5%R0458230500104ST, CARBON, 1/10W, 100K, 5%R0488230500104ST, CARBON, 1/10W, 100K, 5%R0498230500103ST, CARBON, 1/10W, 10K, 5%R050, 0518230500101ST, CARBON, 1/10W, 100, 5%R0548230500103ST, CARBON, 1/10W, 10K, 5%R0558230500101ST, CARBON, 1/10W, 100, 5%R0568230500750ST, CARBON, 1/10W, 75, 5%R0578230500103ST, CARBON, 1/10W, 10K, 5%R0588230500159ST, CARBON, 1/10W, 1.5, 5%R0598230500105ST, CARBON, 1/10W, 1M, 5%R060, 0618230500561ST, CARBON, 1/10W, 560, 5%R0628230500103ST, CARBON, 1/10W, 10K, 5%R063, 0648230500473ST, CARBON, 1/10W, 47K, 5%R0658230500101ST, CARBON, 1/10W, 100, 5%R1018018230500183ST, CARBON, 1/10W, 18K, 5%R1028028230500752ST, CARBON, 1/10W, 7.5K, 5%R1038038230500103ST, CARBON, 1/10W, 10K, 5%R1048048230500103ST, CARBON, 1/10W, 10K, 5%R1058058230500331ST, CARBON, 1/10W, 330, 5%R1068068230500331ST, CARBON, 1/10W, 330, 5%R1098098230500104ST, CARBON, 1/10W, 100K, 5%R1118118230500103ST, CARBON, 1/10W, 10K, 5%R1128128230500123ST, CARBON, 1/10W, 12K, 5%R1138138230500222ST, CARBON, 1/10W, 2.2K, 5%R1148148230500104ST, CARBON, 1/10W, 100K, 5%R1514518230500100ST, CARBON, 1/10W, 10, 5%R1524528230500101ST, CARBON, 1/10W, 100, 5%R1534538230500100ST, CARBON, 1/10W, 10, 5%R1568568230500101ST, CARBON, 1/10W, 100, 5%4.PARTS LISTVC-89CAPACITORsALU = Electrolytic typeCER = Ceramic typeRef. No.Part No.DescriptionC0010038232143106VT, ALU, 16V, 10F, 20%, SME-VBC0048232142107VT, ALU, 10V, 100F, 20%, SME-VBC0050088232143106VT, ALU, 16V, 10F, 20%, SME-VBC0098232143477VT, ALU, 16V, 470F, 20%, SME-VBC0100128232143106VT, ALU, 16V, 10F, 20%, SME-VBC0130208233502104ST, CER, 50V, 0.1F, +80, CC20FC0210248233504103ST, CER, 25V, 0.01F, 10%, CC20RC0258233500471ST, CER, 50V, 470pF, 5%, CC20SLC026, 0278233504103ST, CER, 25V, 0.01F, 10%, CC20RC028, 0298233500471ST, CER, 50V, 470pF, 5%, CC20SLC0300348233504103ST, CER, 25V, 0.01F, 10%, CC20RC0358233502104ST, CER, 50V, 0.1F, +80, CC20FC0360428233504103ST, CER, 25V, 0.01F, 10%, CC20RC043, 0448233500101ST, CER, 50V, 100pF, 5%, CC20SLC0458233500470ST, CER, 50V, 47pF, 5%, CC20SLC0468233504103ST, CER, 25V, 0.01F, 10%, CC20RC047, 0488233500220ST, CER, 50V, 22pF, 5%, CC20SLC0490518233504103ST, CER, 25V, 0.01F, 10%, CC20RC0528233500150ST, CER, 50V, 15pF, 5%, CC20SLC0538233509474ST, CER, 25V, 0.47F, 20%, KC30EC0548233504103ST, CER, 25V, 0.01F, 10%, CC20RC0558232144107VT, ALU, 25V, 100F, 20%, SME-VBC0568233504103ST, CER, 25V, 0.01F, 10%, CC20RC0578232142107VT, ALU, 10V, 100F, 20%, SME-VBC0588233502104ST, CER, 50V, 0.1F, +80, CC20FC0590628233504103ST, CER, 25V, 0.01F, 10%, CC20RC0638233500222ST, CER, 50V, 0.0022F, 5%, CC20SLC0648232143107VT, ALU, 16V, 100F, 20%, SME-VBC0658232143476VT, ALU, 16V, 47F, 20%, SME-VBC0668233504103ST, CER, 25V, 0.01F, 10%, CC20RC067nonC068, 0698233504103ST, CER, 25V, 0.01F, 10%, CC20RC0708232143106VT, ALU, 16V, 10F, 20%, SME-VBC0718233504103ST, CER, 25V, 0.01F, 10%, CC20RC0728233502104ST, CER, 50V, 0.1F, +80, CC20FC0738233509474ST, CER, 25V, 0.47F, 20%, KC30EC0748233504103ST, CER, 25V, 0.01F, 10%, CC20RC0758233500150ST, CER, 50V, 15pF, 5%, CC20SLC0768233500470ST, CER, 50V, 47pF, 5%, CC20SLC0778232357477VT, ALU, 16V, 470F, 20%, LXV, D10C0788233504103ST, CER, 25V, 0.01F, 10%, CC20RC0790818233502104ST, CER, 50V, 0.1F, +80, CC20FC1018018232143106VT, ALU, 16V, 10F, 20%, SME-VBC1028028233500152ST, CER, 50V, 0.0015F, 5%, CC20RC1038038233504103ST, CER, 25V, 0.01F, 10%, CC20RC1048048233504103ST, CER, 25V, 0.01F, 10%, CC20RC107807nonC108808nonC1118118232143106VT, ALU, 16V, 10F, 20%, SME-VBC1128128233500681ST, CER, 50V, 680pF, 5%, CC20SLC1134138233504103ST, CER, 25V, 0.01F, 10%, CC20RCAPACITORsRef. No.Part No.DescriptionC1148233504103ST, CER, 25V, 0.01F, 10%, CC20RC115815nonC1168168232143107VT, ALU, 16V, 100F, 20%, SME-VBC1514518232143106VT, ALU, 16V, 10F, 20%, SME-VBC1524528233504103ST, CER, 25V, 0.01F, 10%, CC20RC1534538232143106VT, ALU, 16V, 10F, 20%, SME-VBC1544548233504103ST, CER, 25V, 0.01F, 10%, CC20RC1554558233504103ST, CER, 25V, 0.01F, 10%, CC20RC1564568232143106VT, ALU, 16V, 10F, 20%, SME-VBC1574578233504103ST, CER, 25V, 0.01F, 10%, CC20RC1584588232143106VT, ALU, 16V, 10F, 20%, SME-VBC3148233504103ST, CER, 25V, 0.01F, 10%, CC20RC5148233504103ST, CER, 25V, 0.01F, 10%, CC20RC7148233504103ST, CER, 25V, 0.01F, 10%, CC20RMISCELLANEOUSRef. No.Part No.DescriptionJ0018245541000CONN, PL, JACK, DC-INLET,YKB31-0012J0028245552010CONN, OPT, GPIF38T2J0038245553010CONN, OPT, GPIF37R1J0048245325000CONN, PL, JACK, BNC, YKS11-0011J1011048245286000CONN, PL, JACK, RCA, 4P,YKC21-3077L001, 0028242502560CORE, ST, CDRH104, 56HL0038242196223COIL, PVT, 22H, 5%, LF5.0SL0048242134001FILTER, EMI, 6HOLEL0058242196223COIL, PVT, 22H, 5%, LF5.0SL0068242501121FILTER, ST, EMI, 120, 25%,MMZ2012SL0078242503221CORE, ST, CDPH73, 220HL1018018242501121FILTER, ST, EMI, 120, 25%,MMZ2012SL1028028242501121FILTER, ST, EMI, 120, 25

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