Download Service Manual -- Fostex -- DS-8
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Service Manual Model DS-8 DIGITAL AUDIO SELECTOR 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 DS-8 CAUTION: CAUTION TO PREVENT ELECTRIC SHOCK, MATCH RISK OF ELECTRIC SHOCK DO NOT OPEN WIDE BLADE OF PLUG TO WIDE SLOT, OUTPUT 8 (OPTICAL) OUTPUT 7 (OPTICAL) OUTPUT 6 (OPTICAL) OUTPUT 5 (OPTICAL) OUTPUT 4 (OPTICAL) POUR ÉVITER LES CHOCS ÉLECTRIQUES, DO NOT REMOVE COVER (OR BACK). OUTPUT 3 (OPTICAL) ATTENTION: CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK, OUTPUT 2 (COAXIAL) OUTPUT 1 (COAXIAL) FULLY INSERT. INTRODUIRE LA LAME LA PLUS LARGE DE NO USER-SERVICEABLE PARTS INSIDE. LA FICHE DANS LA BORNE CORRESPONDANTE DE LA PRISE ET POUSSER REFER SERVICING TO QUALIFIED SERVICE PERSONNEL. INPUT SELECTOR OUT 8 INPUT SELECTOR OUT 7 INPUT SELECTOR OUT 6 “TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE.” INPUT SELECTOR OUT 5 “WARNING” INPUT SELECTOR OUT 4 INPUT SELECTOR OUT 1 The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating and maintenance (servicing) instructions in the literature accompanying the appliance. INPUT SELECTOR OUT 3 The lightening flash with arrowhead symbol, within an equilateral triangle, is intended to alert the user to the presence of uninsulated “dangerous voltage” within the product's enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons. INPUT SELECTOR OUT 2 JUSQU' AU FOND. 15. 7. 8. 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 overturn. Wall or Ceiling Mounting - The appliance should be 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 ventilation. For example, the appliance should not be situated on a bed, sofa, rug, or similar surface that may block the ventilation openings; or, placed in a built-in installation, such as a bookcase or cabinet that may impede the flow of air through the ventilation openings. 16. 17. INPUT 8 (OPTICAL) 14. INPUT 7 (OPTICAL) 13. INPUT 6 (OPTICAL) 6. 12. INPUT 5 (OPTICAL) 5. 11. INPUT 4 (OPTICAL) 4. 10. Heat - The appliance should be situated away from heat sources such as radiators, heat registers, stoves, or other appliances (including 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 means 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 receptacles, and the point where they exit from the appliance. Cleaning - The appliance should be cleaned only as recommended 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 fall and liquids are not spilled into the enclosure through openings. Damage requiring Service - The appliance should be serviced by qualified service personnel when: A. The power supply cord or the plug has been damaged; or B. Objects have fallen, or liquid has been spilled into the appliance; or C. The appliance has been exposed to rain; or D. The appliance does not appear to operate normally or exhibits a marked changed in performance; or E. The appliance has been dropped, or the enclosure damaged. Servicing - The user should not attempt to service the appliance beyond that described in the operating instructions. All other servicing should be referred to qualified service personnel. INPUT 3 (OPTICAL) 3. 9. INPUT 2 (COAXIAL) 2. Read instructions - All the safety and operating instructions 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 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 should be used only with a cart or stand that is recommended by the manufacturer. BLOCK DIAGRAM 1. INPUT 1 (COAXIAL) SAFETY INSTRUCTIONS 11 DS-8 OUT8 INPUT SEL S18 SRBV18 DS-8 2 3 4 5 6 7 8 9 OUT7 INPUT SEL S17 SRBV18 1 10 2 3 4 5 6 7 8 9 OUT5 INPUT SEL S15 SRBV18 1 10 2 3 4 5 6 7 8 9 OUT4 INPUT SEL S14 SRBV18 1 10 2 3 4 5 6 7 8 9 2 3 4 5 6 7 8 9 the Model DS-8. 1 10 OUT2 INPUT SEL S12 SRBV18 * The following accessories are supplied with DS-8 as the standard accessories. 2 3 4 5 6 7 8 9 ! Owner's manual : 8288449000 (for export model) AC adaptor AD-12A : 8288450000 (for domestic model) : 8270727003 (for USA/CND) : 8270727006 (for EUR) : 8270727007 (for UK) OUT1 INPUT SEL : 8270727010 (for JPN) * Following is the packing material for the Model DS-8. 1 10 S11 SRBV18 1 10 ! FPC-17P 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 Carton, inner, DS-8 : 8228734000 Packing side, DS-8 Packing, AC, DS-8 : 8228436000 : 8228437000 CAUTION IN5 IN1 IN6 IN2 IN7 IN3 IN8 IN4 OUT8 OUT1 OUT7 OUT2 OUT6 OUT3 OUT5 OUT4 2 3 4 5 6 7 8 9 DGND NOTES * Parts List and circuit diagrams are given in this manual to assist the service technician in maintaining OUT3 INPUT SEL S13 SRBV18 1 10 J2 3. EXPLODED VIEW, PCB ASSEMBLY AND PARTS LIST . . . . . . 5 4. CIRCUIT & BLOCK DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . 9 OUT6 INPUT SEL S16 SRBV18 2 3 4 5 6 7 8 9 SW PCB 1. SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2. CONTROLS, INDICATORS AND CONNECTORS . . . . . . . . . . . . 4 1 10 10 TABLE OF CONTENTS Parts marked with this sign are safety critical components. They must always be replaced with identical components. Refer to the Fostex Parts List and ensure exact replacement. 3 1. 2. 3. 4. 4 7 9 6 5 4 3 8 2 1 7 7 6 6 S/P DIF OUTPUT INPUT SELECTOR [INPUT SELECTOR 1 - 8] Input connector 8 [S/P DIF INPUT 8] Output connector 8 [S/P DIF OUTPUT 8] Power switch / POWER LED [POWER] 5 4 5. 6. 7. 8. 9. 3 2 < REAR PANEL > 5 12V DC IN 1 S/P DIF INPUT Input connector 1, 2 [S/P DIF INPUT 1, 2] Input connector 3 - 7 [S/P DIF INPUT 3 - 7] Output connector 1, 2 [S/P DIF OUTPUT 1, 2] Output connector 3 - 7 [S/P DIF OUTPUT 3 - 7] DC IN connector [DC IN 12V] D+5 D+5 D+5 D+5 D+5 C63 0.1 C53 0.1 C43 0.1 C33 0.1 C23 0.1 DGND DGND DGND DGND DGND DGND R67 jumper DGND R66 2.2K DGND R65 3.3K D+5 R57 jumper R56 2.2K DGND R55 3.3K D+5 R47 jumper R46 2.2K DGND R45 3.3K D+5 R37 jumper R36 2.2K DGND R35 3.3K D+5 R27 jumper R26 2.2K DGND R25 3.3K D+5 R16 2.2K 12 2 12 10 8 6 4 R24 2.2K DGND C22 47P J2 FPC-17P DGND 13 U2F 74HC04 11 U2E 74HC04 9 U2D 74HC04 5 U2C 74HC04 3 U2B 74HC04 1 U2A 74HC04 U1F 74HCU04 13 R23 47K DGND R14 2.2K < FRONT PANEL > 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 R17 jumper 2 C21 22P U1A 74HCU04 1 2. CONTROLS, INDICATORS & CONNECTORS INPUT8 (OPTICAL) U61 GPIF37R1 INPUT7 (OPTICAL) U51 GPIF37R1 INPUT6 (OPTICAL) U41 GPIF37R1 INPUT5 (OPTICAL) U31 GPIF37R1 INPUT4 (OPTICAL) U21 GPIF37R1 INPUT3 (OPTICAL) 3 POWER R15 3.3K INPUT 8 C13 0.1 8 C12 47P 8 1 INPUT 7 S/P DIF DIGITAL AUDIO SELECTOR U11 GPIF37R1 8 DGND 7 1 D+5 2 8 DGND INPUT SELECTOR D+5 INPUT 6 7 S/P DIF OUTPUT D22 DIODE INPUT 5 2 1 S/P DIF INPUT R21 75 INPUT 4 7 8 5 6 DGND 1 OUTPUT 8 R22 10 2 8 4 3 D21 DIODE 7 1 5 6 D+5 2 OUTPUT 7 L21 jumper INPUT 3 8 4 3 C25 33/25 INPUT 2 7 5 6 5 1 OUTPUT 6 DGND 2 8 4 3 DGND 7 1 5 6 4 2 OUTPUT 5 3 8 4 3 INPUT2 (COAXIAL) 7 1 5 6 4 D12 DIODE 2 OUTPUT 4 R11 75 7 8 4 3 R13 47K U4C U1D 74HCU04 8 9 U1C 74HCU04 6 5 U4B U1E 74HCU04 10 11 U1B 74HCU04 4 3 U3D 74HC04 8 9 U3C 74HC04 6 5 U3B 74HC04 4 3 U3A 74HC04 2 1 C27 33/25 C17 33/25 U3F 74HC04 12 13 U3E 74HC04 10 11 Specifications and appearance are subject to change without notice for product improvement. 2 2 1 5 6 1 INPUT 1 OUTPUT 3 INPUT1 (COAXIAL) 4 3 3 2 1 3 2 1 DGND C65 0.1 DGND C55 0.1 DGND C45 0.1 DGND C35 0.1 DGND C25 0.1 DGND C15 0.1 DGND L22 jumper DGND L12 jumper 4 6 4 6 D+5 D+5 D+5 D+5 D+5 D+5 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 TRANSFORMER T21 TRANSFORMER T11 R28 75 R18 75 OUTPUT8 (OPTICAL) U62 GPIF38T2 OUTPUT7 (OPTICAL) U52 GPIF38T2 OUTPUT6 (OPTICAL) U42 GPIF38T2 OUTPUT5 (OPTICAL) U32 GPIF38T2 OUTPUT4 (OPTICAL) U22 GPIF38T2 OUTPUT3 (OPTICAL) U12 GPIF38T2 L24 BEAD L23 BEAD L14 BEAD L13 BEAD J1 YKB31-0012 DGND C14 0.1 Square shape optical S/P DIF (IEC60958 part 3) 12 V (Inner: Plus, Outer: Minus) 32 kHz ~ 96 kHz 44 (H) x 482 (W) x 113 (D) mm 1.4 kg (excluding accessories) JPN : 100 V AC USA/CND : 120 V AC UK/EUR : 230 V AC Fostex AC adaptor AD-12A D11 DIODE 5 6 R12 10 OUTPUT 2 3 C15 33/25 4 3 2 C11 22P 1 L11 jumper D+5 POWER SUPPLY J11 YKC21-3079 5 6 2 3 1 C24 0.1 4 3 2 1 C4 10/16 DGND 9 1 13 11 D+5 U4A 2 12 10 U4E U4F 8 U4D IN U91 C5 10/16 C6 0.1 C1 10/35 D2 LED R1 470 J5 8283-3P W1 B. IN-3P 3 G 2 C7 0.1 D+5 1 C8 0.1 DGND OUT 78M05 C9 1 2 (NON) J4 C92 0.1 PCB, REGULATOR C91 0.1 D1 DIODE DGND C2 C3 100/10 10/16 DGND D+5 L1 jumper W3 S1 OUTPUT2 (COAXIAL) OUTPUT1 (COAXIAL) L2 jumper W4 DGND 5 J12 YKC21-3079 RCA pin jack 75 Ω 0.5 Vp-p S/P DIF (IEC60958 part 3) IN5 IN1 IN6 IN2 IN7 IN3 IN8 IN4 OUT8 OUT1 OUT7 OUT2 OUT6 OUT3 OUT5 OUT4 OUTPUT 1 Square shape optical S/P DIF (IEC60958 part 3) 3 2 1 4 3 RCA pin jack 75 Ω 0.5 Vp-p S/P DIF (IEC60958 part 3) 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 INPUT 1, 2 (COAXIAL IN) Connector Input Impedance Normal Input Level Format INPUT 3 - 8 (OPTICAL IN) Connector Format OUTPUT 1, 2 (COAXIAL OUT) Connector Input Impedance Normal Input Level Format OUTPUT 3 - 8 (OPTICAL OUT) Connector Format DC IN SAMPLING FREQUENCY DIMENSIONS WEIGHT POWER REQUIREMENT 3 2 1 1. SPECIFICATIONS MAIN / REGULATOR PCB DS-8 DS-8 4. CIRCUIT & BLOCK DIAGRAMS 9 DS-8 DS-8 DS-8 Parts List 3. EXPLODED VIEW, PCB ASSEMBLY AND PARTS LIST • MAIN PCB assy Ref. No. DS-8 OVERALL EXPLODED VIEW & PARTS LIST Part No. Description 8274 2430 00 PCB Assy, Main, DS-8 8251 9661 01 Plain PCB, Main, DS-8 Ref. No. U001 U002, 003 U004 U011~061 U012~062 Part No. 8236 0074 01 8236 0812 00 8245 5530 10 8245 5520 10 Ref. No. D001 D002 D011, 021 D012, 022 Part No. 8234 0196 8234 0201 8234 5007 8234 5007 02 00 00 00 ICs Description DIP, DG, CMOS, 74HCU04 DIP, DG, CMOS, 74HC04 N/A Connector, opt, GPIF37R1 Connector, opt, GPIF38T2 DIODEs Description HT, DSK10C-BT Opt, V, LED, green, GLK3KG8 HT, 1SS136 HT, 1SS136 Ref. No. J002 J004 J005 J011, 012 L001, 002 L011, 021 L012, 022 L013, 023 L014, 024 S001 T011, 021 W003, 004 W401 Ref. No. R001 R011, 021 R012, 022 R013, 023 R014, 024 R015~065 R016~066 R017~067 R018, 028 8 Part No. 8230 1384 8230 1387 8230 1381 8230 1384 8230 1382 8230 1383 8230 1382 8230 1387 Ref. No. C001 C002 C003~005 C006, 007 C008, 009 C011, 021 C012, 022 C013~063 C014, 024 C015~065 C016, 026 C017, 027 CAPACITORs ALU = Electrolytic type CER = Ceramic type Part No. Description 8232 1451 06 VT, ALU, 35V, 10µF, 20%, SME-VB 8232 1421 07 VT, ALU, 10V, 100µF, 20 %, SME-VB 8232 1431 06 VT, ALU, 16V, 10µF, 20 %, SME-VB 8232 8181 04 VT, CER, 25V, 0.1µF, +80-20%, YF N/A 8232 8012 20 VT, CER, 50V, 22pF, 5%, SL 8232 8014 70 VT, CER, 50V, 47pF, 5%, SL 8232 8181 04 VT, CER, 25V, 0.1µF, +80-20%, YF 8232 8181 04 VT, CER, 25V, 0.1µF, +80-20%, YF 8232 8181 04 VT, CER, 25V, 0.1µF, +80-20%, YF 8232 1443 36 VT, ALU, 25V, 33µF, 20 %, SME-VB 8232 1443 36 VT, ALU, 25V, 33µF, 20 %, SME-VB Ref. No. Y201 E201 E202 J001 MISCELLANEOUS Part No. Description 8276 8730 02 Tube, UL, black, 1, L05 Jumper, F5 Jumper, F10 8245 5410 00 Connector, jack, DC inlet, YKB31-0012 Ref. No. Part No. 1 8221 2230 00 Ref. No. Description Cover, DS-8/DP-8 10 2 3 8221 3090 00 8221 3100 00 Panel, dress, DS-8 Panel, rear, DS-8 4 5 8274 2450 00 8274 2440 00 PCB assy, SW, DS-8 PCB assy, Regulator, DS-8 6 7 8274 2430 00 8226 0130 02 PCB assy, MAIN, DS-8 Button, push, B, N08 8 9 8221 2220 00 8226 1870 02 Chassis, DS-8/DP-8 Knob, VR, W, N19 Part No. Description 8270 7270 03 8270 7270 06 AC adaptor, AD-12A, 120V, USA/CND AC adaptor, AD-12A, 230V, EUR 8270 7270 07 8270 7270 10 AC adaptor, AD-12A, 240V, UK AC adaptor, AD-12A, 100V, JPN 11 12 8226 0191 00 8216 6570 00 Escutcheon, B Spacer, escutcheon 13 8276 8396 05 Cable, flat, FFC, 17P, L50 (Included in MAIN PCB assy.) 14 8216 6920 00 Sheet, volume, DS-8/DP-8 • REGULATOR PCB assy Ref. No. RESISTORs Description 71 HT, Carbon, 1/4W, 470Ω, 5% 50 HT, Carbon, 1/4W, 75Ω, 5% 00 HT, Carbon, 1/4W, 10Ω, 5% 73 HT, Carbon, 1/4W, 47kΩ, 5% 22 HT, Carbon, 1/4W, 2.2kΩ, 5% 32 HT, Carbon, 1/4W, 3.3kΩ, 5% 22 HT, Carbon, 1/4W, 2.2kΩ, 5% Jumper, F5 50 HT, Carbon, 1/4W, 75Ω, 5% Part No. Description 8245 2720 17 Connector, PI, jack, FPC, 17P N/A 8245 1711 03 Connector, PI, jack, 8283, 3P, WHT 8245 3130 01 Connector, PL, jack, RCA, 2P, BLK, WS N/A N/A N/A 8242 1860 13 Filter, T, EMI, LFW7B-M3R2T 8242 1860 13 Filter, T, EMI, LFW7B-M3R2T 8253 4610 01 Switch, P, push, power, SDDL 8242 2350 00 Transformer, digital out, K7-T Jumper, F5 8276 8396 05 Cable, flat, FFC, 17P, L50 1 Part No. Description 8274 2440 00 PCB Assy, Regulator, DS-8 8251 9660 02 Plain PCB, Regulator, DS-8 BBT 3x8 BZn 11 10 Ref. No. Part No. Description U091 8236 0320 01 IC, 220, AN, regulator, NJM78M05FA C091, 092 8232 8181 04 Capacitor, VT, CER, 25V, 0.1µF, +80-20%, YF W001 8276 7730 10 Cable assy, 3P, WHTMT/F-MT/BS, L100 E101, 102 N/A 2 BBT 3x6 BZn 12 BBT 3x8 BZn 3 BBT 3x8 BZn Ref. No. Part No. 8274 2450 00 8251 9660 03 BBT 3x6 BZn 4 • SW PCB assys 13 Description PCB Assy, SW, DS-8 Plain PCB, SW, DS-8 Ref. No. Part No. Description S011~081 8253 4600 01 SW, P, rotary, 1-8, non-shortening, SRBV18 J003 8245 2721 17 Connector, PL, jack, FPC, 17P W002 N/A E101, 102 N/A Abbreviation DIP: Dual In Line H: Horizontal mount V: Vertical mount T: Taping device PI: Penetrate mount I form (straight) PL: Penetrate mount L form (right angle) DG: Digital 5 BBT 3x6 BZn BBT 3x6 BZn P 3x5 CZn 14 9 6 Attached to each pot. 8 P 3x5 CZn 7 5 S11 6 S21 10 R35 S31 6 1 10 C33 R17 IN4 R37 5 5 C23 J1 P IN5 R26 D2 W3 C16 L1 W4 6 6 L24 1 3 C63 C2 R65 R66 C4 R67 C8 R1 10 R28 10 L23 S71 6 W1 1 S81 C91 10 3 S61 6 8 T11 1 2 3 IN7 S51 R56 10 U1 C6 1 6 6 R45 S41 10 J2 1 U22 OUT4 IN5 C65 1 2 3 U31 IN6 1 10 R47 S71 1 2 3 U41 5 R14 C12 C11 R13 C3 W2 C27 IN8 1 U91 C92 U61 L22 OUT8 R18 U62 L13 3 2 1 1 U51 C53 3 2 1 T21 3 OUT1 J12 2 L24 R57 C65 1 C15 R56 OUT2 4 10 R55 J3 1 U4 OUT3 1 2 3 U12 S61 C4 R24 C22 C21 R23 S1 U3 8 C25 C35 OUT4 10 6 1 R67 C43 POWER SW 8 U22 C45 OUT5 1 2 3 U32 1 2 3 OUT6 1 2 3 U42 S51 5 U62 C33 C1 D1 C55 OUT7 1 2 3 U52 10 6 1 REGULATOR,DP-8 U61 R35 6 5 C8 1 8 S31 IN4 C23 10 17 6 IN3 S21 8 10 U2 3 IN2 4 D2 C1 D1 J3 1 C55 003 1 2 3 U11 8251966 SW,DP-8 W2 1 2 3 U21 S81 6 17 8251966 001 MAIN,DP-8 R26 17 B S41 5 L14 8251966 002 1 8 U32 OUT5 R25 5 S IN6 6 1 C3 IN3 R27 6 1 C53 IN2 10 C13 5 J2 1 R28 IN1 D12 J4 R45 R46 R24 C43 C22 C21 R23 L21 D21 R21 1 R36 1 R57 C24 D2 R2 1 1 R47 • Foil Side of MAIN / REGULATOR / SW PCB assys 10 R22 5 R25 17 C9 IN7 C14 8 L12 D22 R11 L11 C7 D11 R12 1 2 1 C26 1 R15 R16 U2 R55 C6 C45 1 6 R22 5 C5 C35 C26 J5 1 8 C25 U4 U12 OUT3 C15 U52 OUT7 D22 5 R14 C12 C11 R13 OUT1 U1 J12 J5 C69 L13 L22 R18 U91 1 3 C24 L23 1 3 T21 3 C92 W1 1 C91 C2 R66 R65 T11 C17 L14 1 U51 C27 C14 5 U41 R17 R15 R16 1 U31 R11 S11 10 1 IN1 2 J1 DC IN D11 C16 5 U21 1 U11 OUT8 5 R46 J11 1 1 J11 L21 5 IN8 U42 OUT6 U3 R1 W3 L1 W4 L2 POWER SW S1 R12 1 • Parts Side of MAIN / REGULATOR / SW PCB assys L11 5 6 D12 C5 1 DS-8 PCB ASSEMBLIES DS-8 DS-8 J4 2 C7 C13 R27 R37 R36 L12 C17 3 C9 L2 7