Fostex DS-8 Service Manual Download Page 2

SAFETY INSTRUCTIONS

Read instructions - All 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 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 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
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 may 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 (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 recep-
tacles, and the point where they exit from the 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 fall 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-
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 SHOCK, MATCH

WIDE BLADE OF PLUG TO WIDE SLOT,

FULLY INSERT.

POUR ÉVITER LES CHOCS ÉLECTRIQUES,

INTRODUIRE LA LAME LA PLUS LARGE DE

L A   F I C H E   D A N S   L A   B O R N E   C O R R E -

SPONDANTE DE LA PRISE ET POUSSER

JUSQU' AU FOND.

CAUTION:

ATTENTION:

The exclamation point within an equilateral
triangle is intended to alert 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” within the product's 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;
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.

17.

11

DS-8

DS-8

INPUT 1

(CO

A

XIAL)

INPUT 2

(CO

A

XIAL)

INPUT 3

(OPTICAL)

INPUT 4

(OPTICAL)

INPUT 5

(OPTICAL)

INPUT 6

(OPTICAL)

INPUT 7

(OPTICAL)

INPUT 8

(OPTICAL)

INPUT SELECT

O

R

OUT 8

INPUT SELECT

OR

OUT 7

INPUT SELECT

O

R

OUT 6

INPUT SELECT

O

R

OUT 5

INPUT SELECT

OR

OUT 4

INPUT SELECT

O

R

OUT 3

INPUT SELECT

OR

OUT 2

INPUT SELECT

O

R

OUT 1

OUTPUT 1

(CO

AXIAL)

OUTPUT 2

(CO

AXIAL)

OUTPUT 3

(OPTICAL)

OUTPUT 4

(OPTICAL)

OUTPUT 5

(OPTICAL)

OUTPUT 6

(OPTICAL)

OUTPUT 7

(OPTICAL)

OUTPUT 8

(OPTICAL)

    BLOCK DIAGRAM

Summary of Contents for DS-8

Page 1: ...ORATION 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 ...

Page 2: ...ds 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 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 se...

Page 3: ...s the packing material for the Model DS 8 Carton inner DS 8 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 CIRCUIT BLOCK DIAGRAMS 4 4 5 9 3 10 DS 8 DS 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 O...

Page 4: ...UT4 OPTICAL 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 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 INP...

Page 5: ...0074 01 DIP DG CMOS 74HCU04 U002 003 8236 0812 00 DIP DG CMOS 74HC04 U004 N A U011 061 8245 5530 10 Connector opt GPIF37R1 U012 062 8245 5520 10 Connector opt GPIF38T2 DIODEs Ref No Part No Description D001 8234 0196 02 HT DSK10C BT D002 8234 0201 00 Opt V LED green GLK3KG8 D011 021 8234 5007 00 HT 1SS136 D012 022 8234 5007 00 HT 1SS136 RESISTORs Ref No Part No Description R001 8230 1384 71 HT Car...

Page 6: ... SW DP 8 17 1 5 6 10 1 S1 1 5 6 10 1 S2 1 5 6 10 1 S3 1 5 6 10 1 S4 1 5 6 10 1 S5 1 5 6 10 1 S6 1 5 6 10 1 S7 1 5 6 10 1 S8 1 J3 W2 OUT1 U52 OUT7 1 2 3 U42 OUT6 1 2 3 U32 OUT5 1 2 3 U22 OUT4 1 2 3 U12 OUT3 1 2 3 S L1 B P C55 W4 W3 L2 J1 U3 8 1 C45 C35 C25 C15 U4 8 1 C8 C9 D1 C1 S1 POWER SW R1 D2 U62 OUT8 3 1 2 U61 IN8 3 1 2 C65 R67 R65 R66 C63 C2 J5 1 3 C27 C17 L22 L24 L23 R18 L13 L14 L12 R28 C24 ...

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