Fostex-DS8-das-sm维修电路原理图.pdf

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1、FOSTEX CORPORATION 3-2-35 Musashino, Akishima, Tokyo, Japan 196-0021 FOSTEX CORPORATION OF AMERICA 15431 Blackburn Ave., Norwalk, CA 90650, U.S.A. PRINTED IN JAPAN OCT. 1999 8288786000 DS-8 Service Manual Model DIGITAL AUDIO SELECTOR RadioFans.CN 收音机爱 好者资料库 SAFETY INSTRUCTIONS Read instructions - Al

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

3、 instructions - All operating and use instructions should be followed. Water and Moisture - The appliance should not be used near water - for example, near a bathtub, washbowl, kitchen sink, laundry tub, in a wet basement, or near a swimming pool, and the like. Carts and Stands - The appliance shoul

4、d be used only with a cart or stand that is recommended by the manufac- turer. An appliance and cart combination should be moved with care. Quick stops, excessive force, and uneven surfaces may cause the appliance and cart combination to over- turn. Wall or Ceiling Mounting - The appliance should be

5、 mounted to a wall or ceiling only as recommended by the manufacturer. Ventilation - The appliance should be situated so that its location 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 ma

6、y block the ventilation openings; or, placed in a built-in installa- tion, such as a bookcase or cabinet that may impede the flow of air through the ventilation openings. Heat - The appliance should be situated away from heat sources such as radiators, heat registers, stoves, or other appliances (in

7、cluding amplifiers) that produce heat. Power Sources - The appliance should be connected to a power supply only of the type described in the operating instructions or as marked on the appliance. Grounding or Polarization - The precautions that should be taken so that the grounding or polarization me

8、ans of an appliance is not defeated. Power Cord Protection - Power supply cords should be routed so that they are not likely to be walked on or pinched by items placed upon or against them, paying particular attention to cords at plugs, convenience recep- tacles, and the point where they exit from t

9、he appliance. Cleaning - The appliance should be cleaned only as rec- ommended by the manufacturer. Nonuse Periods - The power cord of the appliance should be unplugged from the outlet when left unused for a long period of time. Object and Liquid Entry - Care should be taken so that objects do not f

10、all 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. Servicing - The user should not attempt to service the ap- pliance beyond that described in the operating instruc-

11、tions. All other servicing should be referred to qualified service personnel. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL. CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT REMOVE COVER (OR BACK). NO USER-SERVICEABLE PARTS INSIDE. TO PREVENT ELECTRIC

12、 SHOCK, MATCH WIDE BLADE OF PLUG TO WIDE SLOT, FULLY INSERT. POUR VITER LES CHOCS LECTRIQUES, INTRODUIRE LA LAME LA PLUS LARGE DE LA FICHE DANS LA BORNE CORRE- SPONDANTE DE LA PRISE ET POUSSER JUSQU AU FOND. CAUTION: ATTENTION: The exclamation point within an equilateral triangle is intended to aler

13、t the user to the presence of important operating and mainte- nance (servicing) instructions in the literature accompanying the appliance. The lightening flash with arrowhead symbol, within an equilateral triangle, is intended to alert the user to the presence of uninsulated “dangerous voltage” with

14、in the products en- closure that may be of sufficient magnitude to constitute 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- TURE.” 1. 2. 3. 4. 5. 6. 7. 8. The power supply cord or the plug has been damaged;

15、 or Objects have fallen, or liquid has been spilled into the appliance; or The appliance has been exposed to rain; or The appliance does not appear to operate normally or exhibits a marked changed in performance; or The appliance has been dropped, or the enclosure damaged. 9. 10. 11. 12. 13. 14. 15.

16、 16. 17. 11 DS-8DS-8 INPUT 1 (COAXIAL) INPUT 2 (COAXIAL) INPUT 3 (OPTICAL) INPUT 4 (OPTICAL) INPUT 5 (OPTICAL) INPUT 6 (OPTICAL) INPUT 7 (OPTICAL) INPUT 8 (OPTICAL) INPUT SELECTOR OUT 8 INPUT SELECTOR OUT 7 INPUT SELECTOR OUT 6 INPUT SELECTOR OUT 5 INPUT SELECTOR OUT 4 INPUT SELECTOR OUT 3 INPUT SEL

17、ECTOR OUT 2 INPUT SELECTOR OUT 1 OUTPUT 1 (COAXIAL) OUTPUT 2 (COAXIAL) OUTPUT 3 (OPTICAL) OUTPUT 4 (OPTICAL) OUTPUT 5 (OPTICAL) OUTPUT 6 (OPTICAL) OUTPUT 7 (OPTICAL) OUTPUT 8 (OPTICAL) BLOCK DIAGRAM RadioFans.CN 收音机爱 好者资料库 Parts marked with this sign are safety critical components. They must always

18、be replaced with identical components. Refer to the Fostex Parts List and ensure exact replacement. CAUTION TABLE OF CONTENTS Owners manual: 8288449000 (for export model) : 8288450000 (for domestic model) AC adaptor AD-12A: 8270727003 (for USA/CND) : 8270727006 (for EUR) : 8270727007 (for UK) : 8270

19、727010 (for JPN) Parts List and circuit diagrams are given in this manual to assist the service technician in maintaining the Model DS-8. NOTES The following accessories are supplied with DS-8 as the standard accessories.* * Following is the packing material for the Model DS-8.* Carton, inner, DS-8:

20、 8228734000 Packing side, DS-8: 8228436000 Packing, AC, DS-8: 8228437000 ! 1. SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2. CONTROLS, INDICATORS AND CONNECTORS . . . . . . . . . . . . 3. EXPLODED VIEW, PCB ASSEMBLY AND PARTS LIST . . . . . . 4. CIRCU

21、IT & BLOCK DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . 4 4 5 9 ! 310 DS-8DS-8 SW PCB 2 3 4 5 6 7 8 9 S11 SRBV18 S12 SRBV18 S13 SRBV18 S14 SRBV18 S15 SRBV18 S16 SRBV18 S17 SRBV18 S18 SRBV18 OUT1 INPUT SEL OUT3 INPUT SEL OUT4 INPUT SEL OUT5 INPUT SEL OUT6 INPUT SEL OUT7 INPUT SEL OUT8 INP

22、UT SEL OUT2 INPUT SEL DGND 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 IN5 IN1 IN6 IN2 IN7 IN3 IN8 IN4 OUT8 OUT1 OUT7 OUT2 OUT6 OUT3 OUT5 OUT4 J2 FPC-17P 1 10 2 3 4 5 6 7 8 9 1 10 2 3 4 5 6 7 8 9 1 10 2 3 4 5 6 7 8 9 1 10 2 3 4 5 6 7 8 9 1 10 2 3 4 5 6 7 8 9 1 10 2 3 4 5 6 7 8 9 1 10 2 3 4 5 6 7 8 9 1

23、 10 RadioFans.CN 收音机爱 好者资料库 94 DS-8DS-8 1. SPECIFICATIONS Specifications and appearance are subject to change without notice for product improvement. INPUT 1, 2 (COAXIAL IN) ConnectorRCA pin jack Input Impedance75 Normal Input Level0.5 Vp-p FormatS/P DIF (IEC60958 part 3) INPUT 3 - 8 (OPTICAL IN) Co

24、nnectorSquare shape optical FormatS/P DIF (IEC60958 part 3) OUTPUT 1, 2 (COAXIAL OUT) ConnectorRCA pin jack Input Impedance75 Normal Input Level0.5 Vp-p FormatS/P DIF (IEC60958 part 3) OUTPUT 3 - 8 (OPTICAL OUT) ConnectorSquare shape optical FormatS/P DIF (IEC60958 part 3) DC IN12 V (Inner: Plus, Ou

25、ter: Minus) SAMPLING FREQUENCY32 kHz 96 kHz DIMENSIONS44 (H) x 482 (W) x 113 (D) mm WEIGHT1.4 kg (excluding accessories) POWER REQUIREMENTJPN: 100 V AC USA/CND: 120 V AC UK/EUR: 230 V AC POWER SUPPLYFostex AC adaptor AD-12A 2. CONTROLS, INDICATORS & CONNECTORS 1.INPUT SELECTOR INPUT SELECTOR 1 - 8 2

26、.Input connector 8 S/P DIF INPUT 8 3.Output connector 8 S/P DIF OUTPUT 8 4.Power switch / POWER LED POWER 5.Input connector 1, 2 S/P DIF INPUT 1, 2 6.Input connector 3 - 7 S/P DIF INPUT 3 - 7 7.Output connector 1, 2 S/P DIF OUTPUT 1, 2 8.Output connector 3 - 7 S/P DIF OUTPUT 3 - 7 9.DC IN connector

27、DC IN 12V S/P DIF DIGITAL AUDIO SELECTOR 8 S/P DIF OUTPUT S/P DIF INPUT INPUT SELECTOR INPUT 8 OUTPUT 8 4 3 2 1 5 6 7 8 INPUT 7 4 3 2 1 5 6 7 8 INPUT 6 4 3 2 1 5 6 7 8 INPUT 5 4 3 2 1 5 6 7 8 INPUT 4 4 3 2 1 5 6 7 8 INPUT 3 4 3 2 1 5 6 7 8 INPUT 2 4 3 2 1 5 6 7 8 INPUT 1 4 3 2 1 5 6 7 8 POWER OUTPUT

28、 7OUTPUT 6OUTPUT 5OUTPUT 4OUTPUT 3OUTPUT 2OUTPUT 1 8 1234 1234567 S/P DIF INPUTS/P DIF OUTPUT 12V DC IN 1234567 56789 4. CIRCUIT & BLOCK DIAGRAMS MAIN / REGULATOR PCB 1 3 2 U11 GPIF37R1 INPUT3 (OPTICAL) D+5 DGND D+5 R15 3.3K C13 0.1 DGND R17 jumper R16 2.2K U2A 74HC04 1 3 2 U21 GPIF37R1 INPUT4 (OPTI

29、CAL) D+5 DGND D+5 R25 3.3K C23 0.1 DGND R27 jumper R26 2.2K U2B 74HC04 1 3 2 U31 GPIF37R1 INPUT5 (OPTICAL) D+5 DGND D+5 R35 3.3K C33 0.1 DGND R37 jumper R36 2.2K U2C 74HC04 1 3 2 U41 GPIF37R1 INPUT6 (OPTICAL) D+5 DGND D+5 R45 3.3K C43 0.1 DGND R47 jumper R46 2.2K U2D 74HC04 1 3 2 U51 GPIF37R1 INPUT7

30、 (OPTICAL) D+5 DGND D+5 R55 3.3K C53 0.1 DGND R57 jumper R56 2.2K U2E 74HC04 1 3 2 U61 GPIF37R1 INPUT8 (OPTICAL) D+5 DGND D+5 R65 3.3K C63 0.1 DGND R67 jumper R66 2.2K U2F 74HC04 DGND DGND R11 75 L11 jumper C15 33/25 R12 10 D+5 D11 DIODE D12 DIODE DGND U1A 74HCU04 12 R13 47K C11 22P C12 47P DGND R14

31、 2.2K DGND R21 75 L21 jumper C25 33/25 R22 10 D+5 D21 DIODE D22 DIODE DGND U1F 74HCU04 1312 R23 47K C21 22P C22 47P DGND R24 2.2K J11 YKC21-3079 INPUT1 (COAXIAL) INPUT2 (COAXIAL) U3A 74HC04 1 3 2 C15 0.1 D+5 DGND U12 GPIF38T2 OUTPUT3 (OPTICAL) 1 3 2 C25 0.1 D+5 DGND U22 GPIF38T2 OUTPUT4 (OPTICAL) 1

32、3 2 C35 0.1 D+5 DGND U32 GPIF38T2 OUTPUT5 (OPTICAL) 1 3 2 C45 0.1 D+5 DGND U42 GPIF38T2 OUTPUT6 (OPTICAL) 1 3 2 C55 0.1 D+5 DGND U52 GPIF38T2 OUTPUT7 (OPTICAL) 1 3 2 C65 0.1 D+5 DGND U62 GPIF38T2 OUTPUT8 (OPTICAL) C1 10/35 S1 L2 jumper W4 L1 jumper W3 D1 DIODE D+5 DGND J4 2 (NON) 1 C92 0.1 C91 0.1 3

33、 2 1 1 2 G 3 INOUT W1 B. IN-3P U9178M05 PCB, REGULATOR 34 1110 U1B 74HCU04 U1E 74HCU04 U4B L12 jumper 34 61 2 TRANSFORMER T11 DGND R18 75 L13 BEAD L14 BEAD DGND J12 YKC21-3079 OUTPUT1 (COAXIAL) OUTPUT2 (COAXIAL) 56 98 U1C 74HCU04 U1D 74HCU04 U4C L22 jumper 34 61 2 TRANSFORMER T21 DGND R28 75 L23 BEA

34、D L24 BEAD C14 0.1 C24 0.1 DGND 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 IN5 IN1 IN6 IN2 IN7 IN3 IN8 IN4 OUT8 OUT1 OUT7 OUT2 OUT6 OUT3 OUT5 OUT4 DGND J2 FPC-17P U4F U4D U4E D+5 U4A DGND R1 470 D2 LED C17 33/25 C27 33/25 J1 YKB31-0012 J5 8283-3P 2 3 1 C2 100/10 C3 10/16 C4 10/16 C5 10/16 C6 0.1 C7 0

35、.1 C8 0.1 C9 D+5 DGND DGND 3 2 1 12 U3B 74HC04 34 U3C 74HC04 56 U3D 74HC04 98 U3E 74HC04 1110 U3F 74HC04 1312 12 34 56 98 1110 1312 1 2 3 4 5 1 2 3 4 5 89 1011 1213 21 RadioFans.CN 收音机爱 好者资料库 8 DS-8DS-8 3. EXPLODED VIEW, PCB ASSEMBLY AND PARTS LIST Ref. No.Part No.Description 18221 2230 00Cover, DS-

36、8/DP-8 28221 3090 00Panel, dress, DS-8 38221 3100 00Panel, rear, DS-8 48274 2450 00PCB assy, SW, DS-8 58274 2440 00PCB assy, Regulator, DS-8 68274 2430 00PCB assy, MAIN, DS-8 78226 0130 02Button, push, B, N08 88221 2220 00Chassis, DS-8/DP-8 98226 1870 02Knob, VR, W, N19 Ref. No.Part No.Description 1

37、08270 7270 03AC adaptor, AD-12A, 120V, USA/CND 8270 7270 06AC adaptor, AD-12A, 230V, EUR 8270 7270 07AC adaptor, AD-12A, 240V, UK 8270 7270 10AC adaptor, AD-12A, 100V, JPN 118226 0191 00Escutcheon, B 128216 6570 00Spacer, escutcheon 138276 8396 05Cable, flat, FFC, 17P, L50 (Included in MAIN PCB assy

38、.) 148216 6920 00Sheet, volume, DS-8/DP-8 DS-8 OVERALL EXPLODED VIEW & PARTS LIST BBT 3x8 BZn BBT 3x8 BZn BBT 3x8 BZn BBT 3x6 BZn BBT 3x6 BZn P 3x5 CZn P 3x5 CZn BBT 3x6 BZn 1 2 3 4 5 6 7 8 9 10 Attached to each pot. BBT 3x6 BZn 11 12 13 14 Ref. No.Part No.Description 8274 2440 00PCB Assy, Regulator

39、, DS-8 8251 9660 02Plain PCB, Regulator, DS-8 Ref. No.Part No.Description U0918236 0320 01IC, 220, AN, regulator, NJM78M05FA C091, 092 8232 8181 04Capacitor, VT, CER, 25V, 0.1F, +80-20%, YF W0018276 7730 10Cable assy, 3P, WHTMT/F-MT/BS, L100 E101, 102N/A REGULATOR PCB assy SW PCB assys Ref. No.Part

40、No.Description 8274 2450 00PCB Assy, SW, DS-8 8251 9660 03Plain PCB, SW, DS-8 Ref. No.Part No.Description S0110818253 4600 01SW, P, rotary, 1-8, non-shortening, SRBV18 J0038245 2721 17Connector, PL, jack, FPC, 17P W002N/A E101, 102N/A DIP: Dual In Line H:Horizontal mount V:Vertical mount T:Taping de

41、vice PI:Penetrate mount I form (straight) PL:Penetrate mount L form (right angle) DG: Digital Abbreviation Ref. No.Part No.Description 8274 2430 00PCB Assy, Main, DS-8 8251 9661 01Plain PCB, Main, DS-8 ICs Ref. No.Part No.Description U0018236 0074 01DIP, DG, CMOS, 74HCU04 U002, 003 8236 0812 00DIP,

42、DG, CMOS, 74HC04 U004N/A U011061 8245 5530 10Connector, opt, GPIF37R1 U012062 8245 5520 10Connector, opt, GPIF38T2 DIODEs Ref. No.Part No.Description D0018234 0196 02HT, DSK10C-BT D0028234 0201 00Opt, V, LED, green, GLK3KG8 D011, 021 8234 5007 00HT, 1SS136 D012, 022 8234 5007 00HT, 1SS136 RESISTORs

43、Ref. No.Part No.Description R0018230 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 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

44、.3k, 5% R016066 8230 1382 22HT, Carbon, 1/4W, 2.2k, 5% R017067Jumper, F5 R018, 028 8230 1387 50HT, Carbon, 1/4W, 75, 5% CAPACITORs ALU = Electrolytic type CER = Ceramic type Ref. No.Part No.Description C0018232 1451 06VT, ALU, 35V, 10F, 20%, SME-VB C0028232 1421 07VT, ALU, 10V, 100F, 20 %, SME-VB C0

45、03005 8232 1431 06VT, ALU, 16V, 10F, 20 %, SME-VB C006, 007 8232 8181 04VT, CER, 25V, 0.1F, +80-20%, YF C008, 009N/A C011, 021 8232 8012 20VT, CER, 50V, 22pF, 5%, SL C012, 022 8232 8014 70VT, CER, 50V, 47pF, 5%, SL C013063 8232 8181 04VT, CER, 25V, 0.1F, +80-20%, YF C014, 024 8232 8181 04VT, CER, 25

46、V, 0.1F, +80-20%, YF C015065 8232 8181 04VT, CER, 25V, 0.1F, +80-20%, YF C016, 026 8232 1443 36VT, ALU, 25V, 33F, 20 %, SME-VB C017, 027 8232 1443 36VT, ALU, 25V, 33F, 20 %, SME-VB MISCELLANEOUS Ref. No.Part No.Description Y2018276 8730 02Tube, UL, black, 1, L05 E201Jumper, F5 E202Jumper, F10 J00182

47、45 5410 00Connector, jack, DC inlet, YKB31-0012 Ref. No.Part No.Description J0028245 2720 17Connector, PI, jack, FPC, 17P J004N/A J0058245 1711 03Connector, PI, jack, 8283, 3P, WHT J011, 0128245 3130 01Connector, PL, jack, RCA, 2P, BLK, WS L001, 002N/A L011, 021N/A L012, 022N/A L013, 0238242 1860 13

48、Filter, T, EMI, LFW7B-M3R2T L014, 0248242 1860 13Filter, T, EMI, LFW7B-M3R2T S0018253 4610 01Switch, P, push, power, SDDL T011, 0218242 2350 00Transformer, digital out, K7-T W003, 004Jumper, F5 W4018276 8396 05Cable, flat, FFC, 17P, L50 MAIN PCB assy DS-8 Parts List 5 RadioFans.CN 收音机爱 好者资料库 76 Foil

49、 Side of MAIN / REGULATOR / SW PCB assys DS-8 PCB ASSEMBLIES Parts Side of MAIN / REGULATOR / SW PCB assys C16 R22 C26 R12 C7 C5 12 D11 J4 R21 D21 1 R11 8 U2 R15 R16 8 D12 D22 J11 L21R17 L11 IN2 IN1 C13 R25 R26 C23 R27 IN3 U11 IN4 U21 IN5 U31 IN6 U41 IN7 U51 R35 R36 C33 R37 R45 R46 C43 R47 C22 R23 C21 R24 C12 R13 C11 R14 1 8 171 J2 R55 R56 C53 R57 C6 C14 C17 C27 C3 L13 R18 L22 L14 C24 R28 L24 C4 L23 T21T11 J12 L12 U1 OUT3U12 C4 OUT4U22 OUT5U32 OUT6U42 C15 C25C35 OUT7 U52 C55C45 J1 DC IN L2 L1 W4 W3 1 8 U4 1 8 U3 C9 C8 C1 R1 C2 D1 POWER SWS1 D2 OUT8 U62 IN8 U61 C65