Fostex-DS8-das-sm(1)维修电路原理图.pdf

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1、FOSTEX CORPORATION 3-2-35 Musashino, Akishima, Tokyo, Japan 196-0021FOSTEX CORPORATION OF AMERICA 15431 Blackburn Ave., Norwalk, CA 90650, U.S.A. PRINTED IN JAPAN OCT. 1999 8288786000DS-8Service ManualModelDIGITAL AUDIO SELECTORRadioFans.CN 收音机爱 好者资料库SAFETY INSTRUCTIONSRead instructions - All the sa

2、fety and operating instruc-tions should be read before the appliance is operated.Retain instructions - The safety and operating instructionsshould be retained for future reference.Heed warnings - All warnings on the appliance and in theoperating instructions should be adhered to.Follow instructions

3、- All operating and use instructionsshould be followed.Water and Moisture - The appliance should not be usednear water - 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

4、 cart or stand that is recommended by the manufac-turer.An appliance and cart combination should be moved withcare. Quick 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 ceilin

5、g only as recommended by themanufacturer.Ventilation - The appliance should be situated so that itslocation or position 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;

6、or, placed in a built-in installa-tion, such as a bookcase or cabinet that may impede theflow of air through the ventilation openings.Heat - The appliance should be situated away from heatsources such as radiators, heat registers, stoves, or otherappliances (including amplifiers) that produce heat.P

7、ower Sources - The appliance should be connected to apower supply only of the type described in the operatinginstructions 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 Cor

8、d Protection - Power supply cords should berouted so that they are not likely to be walked on orpinched by items placed 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 cl

9、eaned only as rec-ommended by the manufacturer.Nonuse Periods - The power cord of the appliance shouldbe unplugged from 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 throu

10、gh openings.Damage requiring Service - The appliance should be ser-viced by qualified service personnel when:A.B.C.D.E.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 pe

11、rsonnel.REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.CAUTIONRISK OF ELECTRIC SHOCKDO NOT OPENCAUTION: TO REDUCE THE 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 CHOC

12、S 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) instructio

13、ns 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 en-closure that may be of sufficient magnitude toconstitute a risk of electric

14、shock to persons.“WARNING”“TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK,DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOIS-TURE.”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;

15、 orThe appliance does not appear to operate normally orexhibits a marked changed in performance; orThe appliance has been dropped, or the enclosuredamaged.9.10.11.12.13.14.15.16.17.11DS-8DS-8INPUT 1(COAXIAL)INPUT 2(COAXIAL)INPUT 3(OPTICAL)INPUT 4(OPTICAL)INPUT 5(OPTICAL)INPUT 6(OPTICAL)INPUT 7(OPTIC

16、AL)INPUT 8(OPTICAL)INPUT SELECTOROUT 8INPUT SELECTOROUT 7INPUT SELECTOROUT 6INPUT SELECTOROUT 5INPUT SELECTOROUT 4INPUT SELECTOROUT 3INPUT SELECTOROUT 2INPUT SELECTOROUT 1OUTPUT 1(COAXIAL)OUTPUT 2(COAXIAL)OUTPUT 3(OPTICAL)OUTPUT 4(OPTICAL)OUTPUT 5(OPTICAL)OUTPUT 6(OPTICAL)OUTPUT 7(OPTICAL)OUTPUT 8(O

17、PTICAL) BLOCK DIAGRAMRadioFans.CN 收音机爱 好者资料库Parts 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.CAUTIONTABLE OF CONTENTSOwners manual: 8288449000 (for export model): 8288450000

18、(for domestic model)AC adaptor AD-12A: 8270727003 (for USA/CND): 8270727006 (for EUR): 8270727007 (for UK): 8270727010 (for JPN)Parts List and circuit diagrams are given in this manual to assist the service technician in maintainingthe Model DS-8.NOTESThe following accessories are supplied with DS-8

19、 as the standard accessories.*Following is the packing material for the Model DS-8.*Carton, inner, DS-8: 8228734000Packing side, DS-8: 8228436000Packing, AC, DS-8: 8228437000!1. SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2. CONTROLS, INDICATORS AND CO

20、NNECTORS . . . . . . . . . . . .3. EXPLODED VIEW, PCB ASSEMBLY AND PARTS LIST . . . . . .4. CIRCUIT & BLOCK DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . .4459!310DS-8DS-8 SW PCB23456789S11SRBV18S12SRBV18S13SRBV18S14SRBV18S15SRBV18S16SRBV18S17SRBV18S18SRBV18OUT1INPUT SELOUT3INPUT SELOUT4INP

21、UT SELOUT5INPUT SELOUT6INPUT SELOUT7INPUT SELOUT8INPUT SELOUT2INPUT SELDGND1716151413121110987654321IN5IN1IN6IN2IN7IN3IN8IN4OUT8OUT1OUT7OUT2OUT6OUT3OUT5OUT4J2FPC-17P1102345678911023456789110234567891102345678911023456789110234567891102345678911094DS-8DS-81. SPECIFICATIONSSpecifications and appearanc

22、e are subject to change without notice for product improvement.INPUT 1, 2 (COAXIAL IN)ConnectorRCA pin jackInput Impedance75 Normal Input Level0.5 Vp-pFormatS/P DIF (IEC60958 part 3)INPUT 3 - 8 (OPTICAL IN)ConnectorSquare shape opticalFormatS/P DIF (IEC60958 part 3)OUTPUT 1, 2 (COAXIAL OUT)Connector

23、RCA pin jackInput Impedance75 Normal Input Level0.5 Vp-pFormatS/P DIF (IEC60958 part 3)OUTPUT 3 - 8 (OPTICAL OUT)ConnectorSquare shape opticalFormatS/P DIF (IEC60958 part 3)DC IN12 V (Inner: Plus, Outer: Minus)SAMPLING FREQUENCY32 kHz 96 kHzDIMENSIONS44 (H) x 482 (W) x 113 (D) mmWEIGHT1.4 kg (exclud

24、ing accessories)POWER REQUIREMENTJPN: 100 V ACUSA/CND: 120 V ACUK/EUR: 230 V ACPOWER SUPPLYFostex AC adaptor AD-12A2. CONTROLS, INDICATORS & CONNECTORS1.INPUT SELECTOR INPUT SELECTOR 1 - 82.Input connector 8 S/P DIF INPUT 83.Output connector 8 S/P DIF OUTPUT 84.Power switch / POWER LED POWER5.Input

25、connector 1, 2 S/P DIF INPUT 1, 26.Input connector 3 - 7 S/P DIF INPUT 3 - 77.Output connector 1, 2 S/P DIF OUTPUT 1, 28.Output connector 3 - 7 S/P DIF OUTPUT 3 - 79.DC IN connector DC IN 12VS/P DIF DIGITAL AUDIO SELECTOR8S/P DIF OUTPUTS/P DIF INPUTINPUT SELECTORINPUT 8OUTPUT 843215678INPUT 74321567

26、8INPUT 643215678INPUT 543215678INPUT 443215678INPUT 343215678INPUT 243215678INPUT 143215678POWEROUTPUT 7OUTPUT 6OUTPUT 5OUTPUT 4OUTPUT 3OUTPUT 2OUTPUT 1812341234567S/P DIF INPUTS/P DIF OUTPUT12VDC IN1234567567894. CIRCUIT & BLOCK DIAGRAMS MAIN / REGULATOR PCB132U11GPIF37R1INPUT3(OPTICAL)D+5DGNDD+5R1

27、53.3KC130.1DGNDR17jumperR162.2KU2A74HC04132U21GPIF37R1INPUT4(OPTICAL)D+5DGNDD+5R253.3KC230.1DGNDR27jumperR262.2KU2B74HC04132U31GPIF37R1INPUT5(OPTICAL)D+5DGNDD+5R353.3KC330.1DGNDR37jumperR362.2KU2C74HC04132U41GPIF37R1INPUT6(OPTICAL)D+5DGNDD+5R453.3KC430.1DGNDR47jumperR462.2KU2D74HC04132U51GPIF37R1INP

28、UT7(OPTICAL)D+5DGNDD+5R553.3KC530.1DGNDR57jumperR562.2KU2E74HC04132U61GPIF37R1INPUT8(OPTICAL)D+5DGNDD+5R653.3KC630.1DGNDR67jumperR662.2KU2F74HC04DGNDDGNDR1175L11jumperC1533/25R1210D+5D11DIODED12DIODEDGNDU1A74HCU0412R13 47KC11 22PC1247PDGNDR142.2KDGNDR2175L21jumperC2533/25R2210D+5D21DIODED22DIODEDGND

29、U1F74HCU041312R23 47KC21 22PC2247PDGNDR242.2KJ11YKC21-3079INPUT1(COAXIAL)INPUT2(COAXIAL)U3A74HC04132C150.1D+5DGNDU12GPIF38T2OUTPUT3(OPTICAL)132C250.1D+5DGNDU22GPIF38T2OUTPUT4(OPTICAL)132C350.1D+5DGNDU32GPIF38T2OUTPUT5(OPTICAL)132C450.1D+5DGNDU42GPIF38T2OUTPUT6(OPTICAL)132C550.1D+5DGNDU52GPIF38T2OUTP

30、UT7(OPTICAL)132C650.1D+5DGNDU62GPIF38T2OUTPUT8(OPTICAL)C110/35S1L2jumper W4L1jumper W3D1DIODED+5DGNDJ42(NON)1C920.1C910.132112G3INOUTW1B. IN-3PU9178M05PCB, REGULATOR341110U1B74HCU04U1E74HCU04U4BL12jumper34612TRANSFORMERT11DGNDR1875L13BEADL14 BEADDGNDJ12YKC21-3079OUTPUT1(COAXIAL)OUTPUT2(COAXIAL)5698U

31、1C74HCU04U1D74HCU04U4CL22jumper34612TRANSFORMERT21DGNDR2875L23BEADL24 BEADC140.1C240.1DGND1716151413121110987654321IN5IN1IN6IN2IN7IN3IN8IN4OUT8OUT1OUT7OUT2OUT6OUT3OUT5OUT4DGNDJ2FPC-17PU4FU4DU4ED+5U4ADGNDR1470D2LEDC1733/25C2733/25J1YKB31-0012J58283-3P231C2100/10C310/16C410/16C510/16C60.1C70.1C80.1C9D

32、+5DGNDDGND32112U3B74HC0434U3C74HC0456U3D74HC0498U3E74HC041110U3F74HC041312123456981110131212345123458910111213218DS-8DS-83. EXPLODED VIEW, PCB ASSEMBLY AND PARTS LISTRef. No.Part No.Description18221 2230 00Cover, DS-8/DP-828221 3090 00Panel, dress, DS-838221 3100 00Panel, rear, DS-848274 2450 00PCB

33、assy, SW, DS-858274 2440 00PCB assy, Regulator, DS-868274 2430 00PCB assy, MAIN, DS-878226 0130 02Button, push, B, N0888221 2220 00Chassis, DS-8/DP-898226 1870 02Knob, VR, W, N19Ref. No.Part No.Description108270 7270 03AC adaptor, AD-12A, 120V, USA/CND8270 7270 06AC adaptor, AD-12A, 230V, EUR8270 72

34、70 07AC adaptor, AD-12A, 240V, UK8270 7270 10AC adaptor, AD-12A, 100V, JPN118226 0191 00Escutcheon, B128216 6570 00Spacer, escutcheon138276 8396 05Cable, flat, FFC, 17P, L50(Included in MAIN PCB assy.)148216 6920 00Sheet, volume, DS-8/DP-8 DS-8 OVERALL EXPLODED VIEW & PARTS LISTBBT 3x8BZnBBT 3x8 BZn

35、BBT 3x8 BZnBBT 3x6 BZnBBT 3x6 BZnP 3x5 CZnP 3x5 CZnBBT 3x6BZn12345678910Attached to each pot.BBT 3x6 BZn11121314Ref. No.Part No.Description8274 2440 00PCB Assy, Regulator, DS-88251 9660 02Plain PCB, Regulator, DS-8Ref. No.Part No.DescriptionU0918236 0320 01IC, 220, AN, regulator, NJM78M05FAC091, 092

36、 8232 8181 04Capacitor, VT, CER, 25V, 0.1F,+80-20%, YFW0018276 7730 10Cable assy, 3P, WHTMT/F-MT/BS, L100E101, 102N/A REGULATOR PCB assy SW PCB assysRef. No.Part No.Description8274 2450 00PCB Assy, SW, DS-88251 9660 03Plain PCB, SW, DS-8Ref. No.Part No.DescriptionS0110818253 4600 01SW, P, rotary, 1-

37、8, non-shortening, SRBV18J0038245 2721 17Connector, PL, jack, FPC, 17PW002N/AE101, 102N/ADIP: Dual In LineH:Horizontal mountV:Vertical mountT:Taping devicePI:Penetrate mount I form (straight)PL:Penetrate mount L form (right angle)DG: Digital AbbreviationRef. No.Part No.Description8274 2430 00PCB Ass

38、y, Main, DS-88251 9661 01Plain PCB, Main, DS-8ICsRef. No.Part No.DescriptionU0018236 0074 01DIP, DG, CMOS, 74HCU04U002, 003 8236 0812 00DIP, DG, CMOS, 74HC04U004N/AU011061 8245 5530 10Connector, opt, GPIF37R1U012062 8245 5520 10Connector, opt, GPIF38T2DIODEsRef. No.Part No.DescriptionD0018234 0196 0

39、2HT, DSK10C-BTD0028234 0201 00Opt, V, LED, green, GLK3KG8D011, 021 8234 5007 00HT, 1SS136D012, 022 8234 5007 00HT, 1SS136RESISTORsRef. No.Part No.DescriptionR0018230 1384 71HT, Carbon, 1/4W, 470, 5%R011, 021 8230 1387 50HT, Carbon, 1/4W, 75, 5%R012, 022 8230 1381 00HT, Carbon, 1/4W, 10, 5%R013, 023

40、8230 1384 73HT, Carbon, 1/4W, 47k, 5%R014, 024 8230 1382 22HT, Carbon, 1/4W, 2.2k, 5%R015065 8230 1383 32HT, Carbon, 1/4W, 3.3k, 5%R016066 8230 1382 22HT, Carbon, 1/4W, 2.2k, 5%R017067Jumper, F5R018, 028 8230 1387 50HT, Carbon, 1/4W, 75, 5%CAPACITORsALU = Electrolytic typeCER = Ceramic typeRef. No.P

41、art No.DescriptionC0018232 1451 06VT, ALU, 35V, 10F, 20%, SME-VBC0028232 1421 07VT, ALU, 10V, 100F, 20 %, SME-VBC003005 8232 1431 06VT, ALU, 16V, 10F, 20 %, SME-VBC006, 007 8232 8181 04VT, CER, 25V, 0.1F, +80-20%, YFC008, 009N/AC011, 021 8232 8012 20VT, CER, 50V, 22pF, 5%, SLC012, 022 8232 8014 70VT

42、, CER, 50V, 47pF, 5%, SLC013063 8232 8181 04VT, CER, 25V, 0.1F, +80-20%, YFC014, 024 8232 8181 04VT, CER, 25V, 0.1F, +80-20%, YFC015065 8232 8181 04VT, CER, 25V, 0.1F, +80-20%, YFC016, 026 8232 1443 36VT, ALU, 25V, 33F, 20 %, SME-VBC017, 027 8232 1443 36VT, ALU, 25V, 33F, 20 %, SME-VBMISCELLANEOUSRe

43、f. No.Part No.DescriptionY2018276 8730 02Tube, UL, black, 1, L05E201Jumper, F5E202Jumper, F10J0018245 5410 00Connector, jack, DC inlet, YKB31-0012Ref. No.Part No.DescriptionJ0028245 2720 17Connector, PI, jack, FPC, 17PJ004N/AJ0058245 1711 03Connector, PI, jack, 8283, 3P, WHTJ011, 0128245 3130 01Conn

44、ector, PL, jack, RCA, 2P, BLK, WSL001, 002N/AL011, 021N/AL012, 022N/AL013, 0238242 1860 13Filter, T, EMI, LFW7B-M3R2TL014, 0248242 1860 13Filter, T, EMI, LFW7B-M3R2TS0018253 4610 01Switch, P, push, power, SDDLT011, 0218242 2350 00Transformer, digital out, K7-TW003, 004Jumper, F5W4018276 8396 05Cable

45、, flat, FFC, 17P, L50 MAIN PCB assy DS-8 Parts List576 Foil Side of MAIN / REGULATOR / SW PCB assys DS-8 PCB ASSEMBLIES Parts Side of MAIN / REGULATOR / SW PCB assysC16R22C26R12C7C512D11J4R21D211R118U2R15R168D12D22J11L21R17L11IN2IN1C13R25R26C23R27IN3U11IN4U21IN5U31IN6U41IN7U51R35R36C33R37R45R46C43R4

46、7C22R23C21R24C12R13C11R1418171J2R55R56C53R57C6C14C17C27C3L13R18L22L14C24R28L24C4L23T21T11J12L12U1OUT3U12C4OUT4U22OUT5U32OUT6U42C15C25C35OUT7U52C55C45J1DC INL2L1W4W318U418U3C9C8C1R1C2D1POWER SWS1D2OUT8U62IN8U61C658251966001MAIN,DP-8R66R65R67C6913J5C92C91113U913W18251966 002REGULATOR,DP-88251966003SW,

47、DP-817156101S1156101S2156101S3156101S4156101S5156101S6156101S7156101S81J3W2OUT1U52OUT7123U42OUT6123U32OUT5123U22OUT4123U12OUT3123SL1BPC55W4W3L2J1U381C45C35C25C15U481C8C9D1C1S1POWER SWR1D2U62OUT8312U61IN8312C65R67R65R66C63C2J513C27C17L22L24L23R18L13L14L12R28C2412OUT1 J1243OUT2T21T11C3C53R56R55R57C14U51IN7123U41IN6123U31IN5123C43R46R45R47C33R36R35R37C23R26R25R27C13R16R15R17U21IN4123U11IN3123U181R23C21C22R24R13C11C12R1411781C6U281 18J412D11L21L11R2D2R11C16R12D12R22C5C7C2612IN1J1143IN2J2C4W113C92C9113U91171J3W256101S8156101S7156101S6156101S5156101S4156101S3156101S2156101S11D22DS-8DS-8