User manual FOSTEX DS-8 SERVICE MANUAL

[. . . ] 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 RISK OF ELECTRIC SHOCK DO NOT OPEN TO PREVENT ELECTRIC SHOCK, MATCH WIDE BLADE OF PLUG TO WIDE SLOT, FULLY INSERT. OUTPUT 1 (COAXIAL) OUTPUT 2 (COAXIAL) OUTPUT 3 (OPTICAL) OUTPUT 4 (OPTICAL) OUTPUT 5 (OPTICAL) OUTPUT 6 (OPTICAL) OUTPUT 7 (OPTICAL) CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT REMOVE COVER (OR BACK). REFER SERVICING TO QUALIFIED SERVICE PERSONNEL. ATTENTION: POUR ÉVITER LES CHOCS ÉLECTRIQUES, INTRODUIRE LA LAME LA PLUS LARGE DE LA FICHE DANS LA BORNE CORRESPONDANTE DE LA PRISE ET POUSSER JUSQU' AU FOND. INPUT SELECTOR OUT 1 INPUT SELECTOR OUT 3 INPUT SELECTOR OUT 5 INPUT SELECTOR OUT 2 INPUT SELECTOR OUT 4 INPUT SELECTOR OUT 6 INPUT SELECTOR OUT 7 "WARNING" "TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE. " SAFETY INSTRUCTIONS 1. [. . . ] 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. Objects have fallen, or liquid has been spilled into the appliance; or C. The appliance does not appear to operate normally or exhibits a marked changed in performance; or E. 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. 10. 11. 12. 6. 13. 14. INPUT 1 (COAXIAL) INPUT 2 (COAXIAL) INPUT 3 (OPTICAL) INPUT 4 (OPTICAL) 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. BLOCK DIAGRAM INPUT 5 (OPTICAL) INPUT 6 (OPTICAL) INPUT 7 (OPTICAL) INPUT 8 (OPTICAL) INPUT SELECTOR OUT 8 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. 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. OUTPUT 8 (OPTICAL) 11 DS-8 DS-8 S18 SRBV18 S17 SRBV18 OUT8 INPUT SEL 1 10 OUT7 INPUT SEL S16 SRBV18 S15 SRBV18 S14 SRBV18 OUT4 INPUT SEL OUT5 INPUT SEL OUT6 INPUT SEL S13 SRBV18 OUT3 INPUT SEL S12 SRBV18 OUT2 INPUT SEL S11 SRBV18 OUT1 INPUT SEL SW PCB DGND IN5 IN1 IN6 IN2 IN7 IN3 IN8 IN4 OUT8 OUT1 OUT7 OUT2 OUT6 OUT3 OUT5 OUT4 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 FPC-17P 10 J2 1 10 1 10 1 10 1 10 1 10 1 10 1 10 2 3 4 5 6 7 8 9 2 3 4 5 6 7 8 9 2 3 4 5 6 7 8 9 2 3 4 5 6 7 8 9 2 3 4 5 6 7 8 9 2 3 4 5 6 7 8 9 2 3 4 5 6 7 8 9 2 3 4 5 6 7 8 9 TABLE OF CONTENTS 1. 9 NOTES * Parts List and circuit diagrams are given in this manual to assist the service technician in maintaining the Model DS-8. * The following accessories are supplied with DS-8 as the standard accessories. Owner's manual ! : 8288449000 (for export model) : 8288450000 (for domestic model) : 8270727003 (for USA/CND) : 8270727006 (for EUR) : 8270727007 (for UK) : 8270727010 (for JPN) AC adaptor AD-12A * Following is the packing material for the Model DS-8. Carton, inner, DS-8 Packing side, DS-8 Packing, AC, DS-8 : 8228734000 : 8228436000 : 8228437000 CAUTION ! Parts marked with this sign are safety critical components. Refer to the Fostex Parts List and ensure exact replacement. 3 3 2 1 U31 GPIF37R1 1 3 INPUT5 (OPTICAL) 2 R35 3. 3K R37 jumper U2C 74HC04 5 R36 2. 2K DGND D+5 1 U41 GPIF37R1 3 INPUT6 (OPTICAL) 2 R46 2. 2K DGND D+5 C53 0. 1 1 U51 GPIF37R1 3 INPUT7 (OPTICAL) 2 R56 2. 2K DGND D+5 C63 0. 1 U61 GPIF37R1 1 3 INPUT8 (OPTICAL) 2 R66 2. 2K DGND DGND DGND J2 FPC-17P 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 DGND D+5 DGND D+5 C43 0. 1 DGND D+5 6 C35 0. 1 U3C 74HC04 6 5 2 1 3 DGND U32 GPIF38T2 OUTPUT5 (OPTICAL) D2 LED R1 470 J1 YKB31-0012 DGND D+5 R45 3. 3K R47 jumper U2D 74HC04 9 8 C45 0. 1 U3D 74HC04 8 9 2 1 3 L2 jumper W4 L1 jumper W3 C1 10/35 U42 GPIF38T2 OUTPUT6 (OPTICAL) S1 D1 DIODE 3 2 1 IN5 IN1 IN6 IN2 IN7 IN3 IN8 IN4 OUT8 OUT1 OUT7 OUT2 OUT6 OUT3 OUT5 OUT4 4 DS-8 < REAR PANEL > < FRONT PANEL > 1. 4. 4 3 1 2 OUTPUT 1 INPUT 1 POWER SUPPLY 12V DC IN 8 7 5 6 9 4 3 1 2 OUTPUT 2 INPUT 2 7 8 4 3 1 2 7 5 6 6 OUTPUT 3 INPUT 3 5 8 7 5 6 8 1 2 4 3 OUTPUT 4 INPUT 4 4 5 6 8 7 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 S/P DIF OUTPUT 1 4 3 1 2 INPUT SELECTOR 3 OUTPUT 5 INPUT 5 2 8 7 4 3 2 1 5 6 7 OUTPUT 6 1 INPUT 6 8 7 4 3 2 5 6 1 7 OUTPUT 7 INPUT 7 6 8 7 5 6 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] 1 2 4 3 INPUT 8 5 6 OUTPUT 8 RCA pin jack 75 0. 5 Vp-p S/P DIF (IEC60958 part 3) Square shape optical S/P DIF (IEC60958 part 3) RCA pin jack 75 0. 5 Vp-p S/P DIF (IEC60958 part 3) 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 Specifications and appearance are subject to change without notice for product improvement. 5. [. . . ] 8270 7270 03 8270 7270 06 8270 7270 07 8270 7270 10 8226 0191 00 8216 6570 00 8276 8396 05 8216 6920 00 Description AC adaptor, AD-12A, 120V, USA/CND AC adaptor, AD-12A, 230V, EUR AC adaptor, AD-12A, 240V, UK AC adaptor, AD-12A, 100V, JPN Escutcheon, B Spacer, escutcheon Cable, flat, FFC, 17P, L50 (Included in MAIN PCB assy. ) Sheet, volume, DS-8/DP-8 Ref. 8234 0196 8234 0201 8234 5007 8234 5007 02 00 00 00 · REGULATOR PCB assy Ref. Y201 E201 E202 J001 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 9 6 Attached to each pot. 8 P 3x5 CZn 7 8 5 IN4 IN3 IN5 IN6 IN1 IN2 IN7 C14 OUT1 U42 OUT6 J11 J12 C25 C35 C45 C15 R17 L21 R27 R37 U11 U41 U51 U21 U31 C24 U12 OUT3 U22 OUT4 U32 OUT5 U52 OUT7 D12 D22 C3 R11 L11 C13 R47 R56 R15 R16 C43 R45 R46 R57 R35 R25 R26 R36 C23 C33 R55 C53 D21 R21 L14 R28 L23 D11 R12 L24 C4 T11 T21 L12 W3 R24 C22 C21 R23 1 R22 C16 C26 C6 C17 C27 L13 L22 R18 J4 8 2 C7 C9 C8 8 8 8 U2 C5 U1 U4 J2 J5 1 C2 R14 C12 C11 R13 1 17 1 1 1 1 U3 U91 1 C92 W1 1 3 R66 R65 R67 C1 R1 8251966 001 MAIN, DP-8 C65 U62 IN8 OUT8 3 C69 3 C91 8251966 002 REGULATOR, DP-8 U61 D2 5 5 5 1 1 1 1 1 5 1 5 5 1 5 1 5 17 J3 1 W2 6 6 6 10 S31 10 S41 10 10 S21 6 10 S11 6 S51 10 6 S61 10 6 S71 10 6 S81 8251966 SW, DP-8 003 · Foil Side of MAIN / REGULATOR / SW PCB assys S P J1 B U52 OUT7 123 C55 U42 OUT6 123 C45 U32 OUT5 123 C35 U22 OUT4 123 C25 U12 OUT3 123 C15 OUT2 4 OUT1 J12 2 C14 U51 IN7 123 C24 3 1 C3 U41 IN6 123 U31 IN5 123 U21 IN4 123 U11 IN3 123 IN2 4 IN1 2 3 L11 D22 L21 R36 R35 R37 C33 R56 R55 R57 R46 R45 C53 R47 R26 R25 R17 R15 R16 C43 R27 C23 C13 1 D12 D2 R2 R11 D11 C16 R28 T21 L22 L12 T11 R22 C6 C17 C27 8 C8 U3 1 8 C9 8 U4 1 U1 R24 C22 C21 R23 8 U2 R14 C12 C11 R13 1 1 1 17 S1 POWER SW D1 L1 L2 W4 J3 S81 W2 S71 6 10 6 10 6 S61 6 10 S51 6 10 S41 6 10 S31 6 10 S21 6 10 S11 10 1 5 1 5 1 5 1 5 1 5 1 5 1 5 1 5 17 1 6 DS-8 DS-8 PCB ASSEMBLIES · Parts Side of MAIN / REGULATOR / SW PCB assys J1 DC IN C55 J11 L24 L13 L23 L14 R18 C4 POWER SW S1 L1 W4 L2 W3 D1 1 C2 C1 3 R1 R67 R65 R66 C63 C65 D2 321 U62 OUT8 321 U61 IN8 C26 C7 R12 1 J4 2 C5 J2 J5 1 U91 C92 W1 1 3 3 C91 DS-8 7 [. . . ]