Fostex FD-4 Service manual

Service Manual

Model

FD-4

DIGITAL MULTITRACKER

CAUTION

RISK OF ELECTRIC SHOCK

DO NOT OPEN

CAUTION:

TO PREVENT ELECTRIC SHOCK, MATCH
WIDE BLADE OF PLUG TO WIDE SOLT,
FULLY INSERT.

CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK,

DO NOT REMOVE COVER (OR BACK).

NO USER-SERVICEABLE PARTS INSIDE.

REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.

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.

“WARNING”

“TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK,
DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOIS­TURE.”

SAFETY INSTRUCTIONS

1.

Read instructions - All the safety and operating instruc­tions should be read before the appliance is operated.

2.

Retain instructions - The safety and operating instructions
should be retained for future reference.

3.

Heed warnings - All warnings on the appliance and in the
operating instructions should be adhered to.

4.

Follow instructions - All operating and use instructions
should be followed.

5.

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.

6.

Carts and Stands - The appliance should be used only
with a cart or stand that is recommended by the manufac­turer.

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

7.
mounted to a wall or ceiling only as recommended by the
manufacturer.
Ventilation - The appliance should be situated so that its

8.
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.

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.

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.

Heat - The appliance should be situated away from heat

9.
sources such as radiators, heat registers, stoves, or other
appliances (including amplifiers) that produce heat.
Power Sources - The appliance should be connected to a

10.
power supply only of the type described in the operating
instructions or as marked on the appliance.
Grounding or Polarization - The precautions that should

11.
be taken so that the grounding or polarization means of
an appliance is not defeated.
Power Cord Protection - Power supply cords should be

12.
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 rec-

13.
ommended by the manufacturer.
Nonuse Periods - The power cord of the appliance should

14.
be unplugged from the outlet when left unused for a long
period of time.
Object and Liquid Entry - Care should be taken so that

15.
objects do not fall and liquids are not spilled into the en­closure through openings.
Damage requiring Service - The appliance should be ser-

16.
viced by qualified service personnel when:

The power supply cord or the plug has been damaged;

A.

or
Objects have fallen, or liquid has been spilled into the

B.

appliance; or
The appliance has been exposed to rain; or

C.

The appliance does not appear to operate normally or

D.

exhibits a marked changed in performance; or
The appliance has been dropped, or the enclosure

E.

damaged.

Servicing - The user should not attempt to service the ap-

17.
pliance beyond that described in the operating instruc­tions. All other servicing should be referred to qualified
service personnel.

TABLE OF CONTENTS

FD-4

FD-4

1. SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2. CONTROLS, INDICATORS AND CONNECTORS . . . . . . . . . . .

3. SOFTWARE UPDATE . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4. SERVICE MODE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5. ERROR CODE LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6. INSTALLING 2.5" INTERNAL HARD DISK DRIVE . . . . . . . . .

7. EXPLODED VIEW, PCB ASSEMBLY AND PARTS LIST . . . . .

8. CIRCUIT DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4

7
11
12
19
20
24
41

NOTES

Service mode, error code list, explode view, PCB assembly, parts list and circuit diagrams are given in this

*

manual to assist the service technician in maintaining the Model FD-4.

The following accessories are supplied with FD-4 as the standard accessories.

*

Owner's manual : 8288414100 (for export model)

: 8288415000 (for domestic model)

Following is the packing material for the Model FD-4.

*

Carton, inner, FD-4 : 8228716000
Packing, side, L, FD-4 : 8228440000
Packing, side, R, FD-4 : 8228441000

CAUTION

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

FD-4

1. SPECIFICATIONS

RECORD & REPRODUCE

Recording Medium External fixed / removable hard disk drive

Standard SCSI-2 or better
Sampling Frequency 32 kHz, 44.1 kHz
Quantization 12-bit nonlinear, 16-bit linear
Emphasis Not available
Recording Time (mono track min.)

Fs: 32 kHz About 33 min. / 100 MB (up to 24 hours) at maximum

Fs: 44.1 kHz About 18 min. / 100 MB (up to 24 hours) at maximum
Number of Tracks

NORMAL / MASTERING MODE 1 6 (4 + 2 additional tracks)

MASTERING MODE 2 4
Number of simultaneous recording tracks 2
Number of simultaneous playback tracks 4
Number of tracks to be pasted at a time 6
Recording Format FDMS-3
Recording Mode NORMAL MODE (Fs: 32 kHz, 4 + 2 tracks, default)

ELECTRICAL (0 dBV = 1 V)

• MIXER SECTION
Reference Input Level

MIC -50, -30 dBV

Impedance 20 kΩ or more

LINE -10 dBV

Impedance 20 kΩ or more

RECORDER IN -10 dBV

Impedance 20 kΩ or more

AUX RTN -20 dBV

Impedance 8 kΩ or more

DATA IN

Connector Square shape optical
Format IEC consumer optical standard IEC 958 Part 3

Reference Output Level

STEREO -10 dBV

Load impedance 10 kΩ or more

AUX SEND -10 dBV

Load Impedance 10 kΩ or more

MONITOR -10 dBV

Load impedance 10 kΩ or more

HEADPHONE 20 mW at maximum (Load: 16 Ω)

DATA OUT

Connector Square shape optical
Format IEC consumer optical standard IEC 958 Part 3

MASTERING MODE 1 (Fs: 44.1 kHz, 4 + 2 tracks)
MASTERING MODE 2 (Fs: 44.1 kHz, 4 tracks)

50 mW at maximum (Load: 50 Ω)

4

ELECTRICAL (continued)

SCSI DATA input / output

Connector D-SUB 25-pin
Protocol SCSI-2, unbalanced transfer method
Transfer type Asynchronous
Number of device to be connected 1

Fader / Knob Position at Reference Input / Output

MASTER fader At 8 ~ 9 position (AUX RTN : -20 dBV / 1 kHz, AUX RTN

VR: MAX. Adjust master fader for -10 dBV output at
STEREO OUT.)

MONITOR knob Adjust MONITOR knob for -10 dBV output at MONITOR

OUTPUT. (MON SEL: ST+MON, MON)

INPUT fader At 7 ~ 8 position (INPUT: -10 dBV / 1 kHz, EQ GAIN: 0,

PAN: L (R). Adjust input fader for -10 dBV output at
STEREO OUT.)

Output Level

INPUT (1 ~ 4)

→→

→ AUX SEND -10 dBV +0, -2 dB (INPUT: -10 dBV / 1 kHz, EQ GAIN:

→→

0, PAN: L (R), AUX1, 2 VR: CH MAX, input fader: at 7 ~
8 position.)

INPUT (1 ~ 4)

→→

→ MONITOR -10 dBV ± 1 dB (INPUT: -10 dBV / 1 kHz, EQ GAIN: 0,

→→

PAN: L (R), MON VR: MON MAX, MON PAN: L (R),
input fader: at 7 ~ 8 position.)

Frequency Response

INPUT (1 ~ 4)

→→

→ MONITOR 20 ~ 20 kHz +1, -3 dB (INPUT: -50 dBV)

→→

20 ~ 20 kHz +1, -2 dB (INPUT: -10 dBV)

INPUT (1 ~ 4)
AUX RTN
AUX RTN

→→

→ AUX SEND 20 ~ 20 kHz +1, -2 dB (INPUT: -10 dBV)

→→

→→

→ MONITOR OUT 20 ~ 20 kHz +1, -2 dB (AUX RTN: -20 dBV)

→→
→→

→ PHONES 80 ~ 20 kHz +1, -2 dB (AUX RTN: -20 dBV, at 20 mW /

→→

16 Ω)

EQ Characteristics

High (12 kHz) & Low (80 Hz) +15 dB ± 3 dB at “+15” position

-15 dB ± 3 dB at “-15” position

Mid (200 Hz ~ 5 kHz) +15 dB ± 3 dB at “+15” position

-15 dB ± 3 dB at “-15” position

S / N

FD-4

INPUT OUTPUT S / N

INPUT

INPUT Σ4

Residual Noise

LEVEL LEVEL UNWTD. AWTD.

-50 dBV

-38 dBV

-10 dBV
+2 dBV

-50 dBV

-38 dBV

-10 dBV
+2 dBV
VR MIN

AUX SEND
AUX SEND
AUX SEND
AUX SEND
MONITOR
MONITOR
MONITOR
MONITOR
PHONES

-10 dBV
+2 dBV

-10 dBV
+2 dBV

-10 dBV
+2 dBV

-10 dBV
+2 dBV

66 dB or more
78 dB or more
80 dB or more
92 dB or more
63 dB or more
75 dB or more
73 dB or more
85 dB or more

68 dB or more
80 dB or more
82 dB or more
94 dB or more
65 dB or more
77 dB or more
75 dB or more
87 dB or more

-75 dBV or less

5

FD-4

ELECTRICAL (continued)

Distortion

INPUT OUTPUT S / N

LEVEL LEVEL UNWTD. AWTD.

INPUT

AUX RTN

-40 dBV
0 dBV
0 dBV

-10 dBV

-10 dBV

MONITOR
MONITOR
AUX SEND
MONITOR
PHONES

0 dBV
0 dBV
0 dBV
0 dBV

20 mW

100 ~ 10 kHz
100 ~ 10 kHz
100 ~ 10 kHz
100 ~ 10 kHz

1 kHz

0.05 % or less

0.05 % or less

0.05 % or less

0.05 % or less

0.10 % or less

Crosstalk 60 dB or more / 1 kHz
Click Noise

Power on / off -20 dBV
Other switching -50 dBV

p-p or less
p-p or less

MIDI Controlling Operation check should be executed using the test mode

with connecting the MIDI IN and OUT terminal.

• RECORDER SECTION
Frequency Response

Fs: 44.1 kHz 20 ~ 20 kHz +1, -2 dB

Fs: 32 kHz 20 ~ 14.5 kHz +1, -2 dB
Full Scale Output Level (Ref: -12dB) +2 dBV ± 1 dB (Fs: 32 kHz / 44.1 kHz)
Dynamic Range 88 dB or more (Fs: 32 kHz / 44.1 kHz)
Total Harmonic Distortion

Fs: 44.1 kHz 0.02 % or less

Fs: 32 kHz 0.08 % or less
Channel Separation 80 dB or more / 1 kHz at max. recording level

(Fs: 32 kHz / 44.1 kHz)

S / N 88 dB or more (A-WTD., Fs: 32 kHz / 44.1 kHz)
Power Consumption

JPN 13 W +5, -20 %

Others 15 W +5, -20 %

Specifications and appearance are subject to change without notice for product improvement.

6

2. CONTROLS, INDICATORS & CONNECTORS

Rear Panel

FD-4

Control Panel

AUX1

HIGH

MID
GAIN

MID
SHIFT

300

200

LOW

PAN

1

10

R

LIN

RECORDER IN

INPUT 3

AUX

AUX2

EQ

HIGH

0

-

+

MID
GAIN

0

-

+

MID
SHIFT

900

300

2k

5k

LOW

0000

-

+

MON MON MON

0

TRK1INPUT

PAN

MON L MON RMON L MON R

PAN PAN PAN

L

R

INPUT SELINPUT SEL INPUT SEL

INPUT

OFF

TRK 1

2 3

10

OUT
MIDI

4 INSERT 3

INPUT 4

AUX

00

AUX1

EQ

0

-

0

-

900

200 5k

-

000

L

INPUT

TRK 2

AUX

0

AUX1

HIGH

MID
GAIN

MID
SHIFT

300

200 5k

LOW

PAN

MON L MON R

10

AUX2

EQ

0

-

+

0

-

+

900

2k

-

+

TRK3INPUT

L

R

INPUT

OFF

TRK 3

AUX2

+

+

2k

+

TRK2INPUT

R

OFF

IN/OUT

OUTIN
DATA

PUNCH

MIDI

R MONO/L

AUX RTN 1

AUX

0

AUX1

AUX2

EQ

HIGH

0

-

+
MID
GAIN

0

-

+
MID
SHIFT

900

2k

300

200 5k

LOW

-

+

MON

TRK4INPUT
PAN

MON L MON R

PAN

L

R

INPUT SEL

INPUT

OFF

TRK 4

4

10

1

2

MON SECTION

MASTER

SELECTOR

L/R

10

DATA

AUX RTN 2

AUX RTN

0

10

010

010

L/R

L/R+MON

MON

SCSI

R MONO/L

2 AUX SEND 1

RECORD TRACK

1/L

START IN OUT

AUTO PUNCH

AUTO RTN

HOLD/ STORE

PGM SEL

VARI
PITCH

SHIFT

P. EDIT

CLIPBOARD PLAY

AUTO

PUNCH

LOCATE REC END

RECORD

AUTO RTN
AUTO PLAY

LOCATE ABS 0

R ST OUT L

4/R3/L2/R

PREVIEW

END IN OUT

UNDO/
REDOEDIT

LOCATE

LOC MEM

R MON OUT L

RL

ADD. TRACK

CLIPBOARD

F FWD/REWIND/PLAYSTOP

POWER

TIME BASE

SETUP

SELDISP SEL

EXIT

EXECUTE

/YES

/NO

EJECT

ACCESS

SHUTTLE

JOG

Front Panel

5

0

5

0

5

0

21

5

0

H
M
L

LEVEL LEVEL

3

5

0

H
M
L

DIGITAL MULTITRACKER

4

7

FD-4

Control Panel (Mixer Section)

7

6

5
4
3

2

AUX1

HIGH

MID
GAIN

MID
SHIFT

300

200 5k

LOW

PAN

MON L MON R

INPUT SEL

4

10

AUX

EQ

-

-

900

-

MON

PAN

L

AUX

AUX1

AUX2

EQ

HIGH

0

-

+
MID
GAIN

0

-

+
MID
SHIFT

900

2k

300

200

5k

LOW

0000

-

+

MON MON MON

0

TRK1INPUT
PAN

PAN PAN PAN

L

R

INPUT

OFF

TRK 1

1

10

AUX

00

AUX1

AUX2

EQ

HIGH

0

-

+
MID
GAIN

0

-

+
MID
SHIFT

900

2k

300

200 5k

LOW

-

+

000

TRK2INPUT
PAN

MON L MON RMON L MON R

L

R

INPUT SELINPUT SEL INPUT SEL

INPUT

OFF

TRK 2

2 3

10

AUX1

HIGH

MID
GAIN

MID
SHIFT

300

200 5k

LOW

PAN

MON L MON R

10

AUX

0

AUX2

EQ

0

-

+

0

-

+

900

2k

-

+

TRK3INPUT

L

R

INPUT

OFF

TRK 3

0

0

0

INPUT

TRK 4

OFF

AUX2

+

+

+

TRK4INPUT

R

AUX RTN

1

0

10

2

010

2k

MON SECTION

MASTER

010

SELECTOR

L/R

L/R+MON

MON

L/R

10

8

9

10

5

0

5

0

1

1. Input faders [1-4]

2. Input select switches

[INPUT SEL (INPUT/OFF/TRK)]

3. Panpot knobs [PAN (L/R)]

4. Monitor panpot knobs [PAN (MON L/MON R)]

5. Monitor level control knob [MON (INPUT/TRK)]

6. Equalizer control knobs [EQ (HIGH/MID/LOW)]

7. AUX send knobs [AUX (AUX 1/AUX 2)]

5

0

5

0

H

M

L

LEVEL LEVEL

5

0

H
M
L

8. AUX return knobs [AUX RTN (1, 2)]

9. Monitor master knob

[MONITOR SECTION (MASTER)]

10. Monitor select switch

[SELECTOR (L/R, L/R+MON, MON)]

11. Master fader [L/R]

12. Input level switches [LEVEL (H/M/L)]

11

12

12

8

Control Panel (Recorder Section)

FD-4

41

37
38
34

33

35

14

13

39
36

32
28

29
30

31
27

RECORD TRACK

1/L

START IN OUT

AUTO PUNCH

AUTO RTN

HOLD/ STORE

PGM SEL

VARI

PITCH

SHIFT

P. EDIT

CLIPBOARD PLAY

LOCATE ABS 0

AUTO

PUNCH

LOCATE REC END

RECORD

AUTO RTN

AUTO PLAY

PREVIEW

4/R3/L2/R

ADD. TRACK

END IN OUT

CLIPBOARD

UNDO/

REDOEDIT

LOCATE

LOC MEM

40
15
16
17

RL

TIME BASE

SELDISP SEL

SETUP

EXIT

EXECUTE

/YES

/NO

EJECT

ACCESS

SHUTTLE

JOG

F FWD/REWIND/PLAYSTOP

18
19

20
21
22

23
24
25

26

13. Record track select keys

[RECORD TRACK (1/L, 2/R, 3/L, 4/R, L, R)]

14. LCD

15. Contrast adjustment knob

16. Display indication select key

17. Setup key [SETUP]

18. Time Base select key

19. Execute/Yes key [EXECUTE/YES ]

20. Exit/No key [EXIT/NO/ EJECT ]

21. Access LED [ACCESS]

22. JOG dial [JOG/ SHUTTLE ]

23. Fast forward button [F FWD/ ]

24. Rewind button [REWIND/ ]

25. Play button [PLAY]

26. Stop button [STOP]

27. Record button [RECORD/ AUTO PUNCH ]

DIGITAL MULTITRACKER

28. Shift key [ SHIFT ]

29. Vari Pitch key [VARI PITCH/ P.EDIT ]

30. Auto Return/Auto Play mode on/off key

[AUTO RTN/AUTO PLAY]

31. Locate key [LOCATE/ LOC MEM ]

32. Hold/ key [HOLD/ ]

33. Store key [STORE]

34. Undo/Redo key [UNDO/REDO]

35. Edit key [EDIT]

36. Auto Return Start key [AUTO RTN START/ PREVIEW ]

37. Auto Return End key [AUTO RTN END/ PREVIEW ]

38. Auto Punch In key [AUTO PUNCH IN/ PREVIEW ]

39. Auto Punch Out key [AUTO PUNCH OUT/ PREVIEW ]

40. Clipboard In key [CLIPBOARD IN/ PREVIEW ]

41. Clipboard Out key [CLIPBOARD OUT/ PREVIEW ]

9

FD-4

Front Panel

1

21

1. Input jacks [1, 2, 3, 4] (Phone)

2. Headphone jack [PHONES] (TRS Phone)

Rear Panel

1

3

2

2

4

3 4 5

6

R MON OUT L

POWER

R ST OUT L

2 AUX SEND 1

1. Monitor Out jacks [MON OUT L, R] (RCA pin)

2. Stereo Out jacks [ST. OUT L, R] (RCA pin)

3. AUX Send jacks 1, 2 [AUX SEND 1, 2] (Phone)

4. AUX Return jacks 1, 2 [AUX RTN 1, 2] (Phone)

5. Insert jacks 3, 4 [INSERT 3, 4 ] (TRS Phone)

6. Balanced input connectors 3, 4 [INPUT 3, 4]

(Balanced XLR)

7. Recorder in jacks L, R [RECORDER IN L, R]
(RCA pin)

INPUT 3

AUX RTN 2

R MONO/L

12

DATA

11

SCSI

131415

DATA

OUTIN

AUX RTN 1

R MONO/L

PUNCH
IN/OUT

10

MIDI

4 INSERT 3

MIDI
OUT

89

INPUT 4

RECORDER IN
R

7

LIN

8. MIDI OUT jack [MIDI OUT] (DIN 5-pin)

9. MIDI IN jack [MIDI IN] (DIN 5-pin)

10. Punch in/out jack [PUNCH IN/OUT] (Phone)

11. Data output jack [DATA OUT] (OPTICAL)

12. Data input jack [DATA IN] (OPTICAL)

13. SCSI connector [SCSI] (D-SUB 25-pin)

14. Power cable

15. Power switch [ POWER]

10

3. SOFTWARE UPDATE

The FD-4 software can be updated through SCSI port. This means that unscrewing and opening up the FD-4 top panel is not
necessary to change the EPROMs on the MAIN PCB assy. Please refer to the following explanation for correct software
updating procedures.

3-1. Method of Sending Software from Fostex Japan

There are two ways of sending the FD-4 updated software.

1.

Updated software in a removable media (e.g. floppy disk, zip disk, etc.) to be sent via airmail

2.

Updated software as an attachment file to be sent via E-mail

3-2. Required Tools

The following tools/equipment are required to update the FD-4 software.

1.

IBM PC compatible computer with SCSI board

2.

Removable type SCSI drive

3.

Cable between the removable type SCSI drive and the SCSI board

4.

Cable between the removable type SCSI drive and the FD-4 (D-SUB 25-pin)

FD-4

3-3. Software Updating Procedures

Presuming that the updated software is correctly sent and is copied into your computer.

Connect the removable type SCSI drive to the SCSI board.

1.
Insert the diskette to the removable type SCSI drive and format it by the computer (IBM PC format).

2.
Copy the updated software file to the removable type SCSI drive (diskette).

3.
Reconnect the removable type SCSI drive to the FD-4 SCSI port.

4.
In order to boot up the FD-4 system software, insert the diskette formatted by the FD-4.

5.
Eject the diskette by pressing the EXIT/NO key while holding down the SHIFT key.

6.
Insert the diskette with updated software file. The FD-4 LCD display shows “No Disk”, “Initial..”, “name of drive (e.g.

7.
ZIP 100)” and “FD4MOT” in order and comes to a standstill at the display below.

DIGITAL

?

SURE

SYNC OUT DRIVE

AUTO A.PUNCH

Pressing the EXECUTE/YES key would update the software. The display shows “Loading!”, “Writing!” and “Initial..”

8.
in order and automatically returns to the above condition again. This indicates that updating the software is completed.
Eject the diskette with updated software file and insert the diskette formatted by the FD-4.

9.
Check the software version by the Service Mode. (For details, please refer to the section “4-2. Software/CPU version”.)

10.

: Blinking

SCSI

CAUTION:

The diskette in which the updated software file is copied must be formatted by IBM PC computer, not by Macintosh.

1.
If something wrong happens while updating the software (e.g. A blackout occurred while updating the software.), the

2.
FD-4 might not be able to boot up the system software inside the Flash ROM. In this case, please refer to the section “4-

8. Flash ROM” (page 17).

11

FD-4

4. SERVICE MODE

There are various optional modes available in the FD-4 Service Mode. Please utilize them when servicing the unit.

4-1. Putting FD-4 into Service Mode

The way of putting the FD-4 into Service Mode is as follow.

1)

Connect a SCSI device, insert the diskette formatted by the FD-4 and turn it on.

2)

Turn on the power of FD-4.

3)

While holding down the STOP button and SHIFT key, press the SETUP key.
As shown below, by rotating the jog dial C.W. or C.C.W., various optional modes will be displayed in addition to the

general SETUP menus. In order to select a certain optional mode, press the EXECUTE/YES key while its menu is
displayed.

Save PGM?

Load PGM?

DeviceID?

Resolu?

N/A

N/A

Freebloc k?

Digi.out?

C.W.

Digi.in?

NOsEvent?

RecProtct?

SlaveType?

4-2. Flash ROM/CPU version

C.W.

C.W.

Format?

C.W.

N/A

SlaveMode?

: Blinking

Sign.Set?

TempoSet?

Version?

DA Test?

TitleEdit?

C.W.

Del. PGM?

Click ?

Disp.Test?
SelfCheck?

Preroll?

: Service Mode

C.W.

Init.Disk?FlashROM?

MtcOffset?

OfsetMode?

OfsetDisp?

C.W.

FrameRate?

SyncOut?

N/A: Not Available

This mode is used to check the Flash ROM and CPU versions
currently installed in the unit.

12

SYNC OUT DRIVE

CLK

AUTO A.PUNCH

SYNC OUT DRIVE

CLK

AUTO A.PUNCH

SCSI

: Blinking

SCSI

In order to check the version number, press the “EXECUTE/
YES” key while “?” is blinking.

The example on the left indicates that the Flash ROM version
is V1.00 and its programming date is February 28, 1998.

In this condition, by turning the jog dial C.W., the CPU
version can be checked.

FD-4

4-3. DA Test

1234 LR

SYNC OUT DRIVE

CLK

AUTO A.PUNCH

SYNC OUT DRIVE

CLK

AUTO A.PUNCH

DIGITAL

32kHz

SYNC OUT DRIVE

CLK

AUTO A.PUNCH

: Blinking

SCSI

: Blinking

SCSI

: Blinking

SCSI

The example on the left indicates that the CPU version is
V1.00 and its programming date is January 19, 1998.

This mode test the signal flow from the DATA INPUT jack
to the D/A converter. A S/P DIF digital signal whose
sampling frequency is the same as the one when formatting
the diskette (MASTERING MODE 1, 2: 44.1kHz,
NORMAL MODE: 32kHz) must be input to the DATA
INPUT jack.

To execute this test, press the EXECUTE/YES key while
“?” is blinking.

If the FD-4 is in a normal condition, “32kHz or 44.1kHz”
and “DIGITAL” will be lit solid. The odd (1 and 3) and
even (2 and 4) channels indicate the L and R input level of
S/P DIF digital signal fed to the DATA INPUT jack
respectively.

If the FD-4 is not in a normal condition, “32kHz or 44.1kHz”
and “DIGITAL” will blink and the bargraph meter will not
indicate any input level.

4-4. Display/Button Test

REMAIN ABS
LOC MTC IN

BAR

SYNC OUT DRIVE

CLK

AUTO A.PUNCH

PLAY RTN

MTC

DIGITAL

MIDI

SLAVE

SMH

VARI PITCH TEMPO PGM

?

SURE COMPLETED

SYNC OUT DRIVE

CLK MTC

AUTO A.PUNCH

PLAY RTN

RHSL TAKE

32kHz 44.1kHz 48kHz
SETUP MTC OFFSET

CLK
DF

IDE SCSI

RHSL TAKE

: Blinking

SCSI

MB
SF

This mode tests if all the segments on the LCD display and
the LEDs on the FD-4 top panel are correctly working or
not.

To execute this test, press the EXECUTE/YES key while
“?” is blinking.

If the FD-4 is in a normal condition, all the segments on the
LCD display will lit solid and the LEDs on the top panel
will start blinking.

F
%

!

If the FD-4 is not in a normal condition, the faulty segments
on the LCD display and/or LEDs on the top panel will remain
unlit.

13

FD-4

SYNC OUT DRIVE

CLK

AUTO A.PUNCH

SYNC OUT DRIVE

CLK

AUTO A.PUNCH

SCSI

SCSI

In this condition, if the EXECUTE/YES key is pressed one
more time, the Button Test can be executed.

The Button Test checks if each key/button and jog dial are
working properly or not. The display on the left indicates
that the RECORD button is pressed. (“K” stands for the Key
and “J” the Jog dial.)

The display on the left indicates that the jog dial is turned
C.W.

The table below shows the relationship between the key/
button/jog dial and the corresponding numbers appear on
the LCD display.

In order to quit the Button Test, turn the jog dial C.W. or
C.C.W. further after “J 020” or “J-19” is displayed
respectively.

Key/Button/Jog Dial No.
RECORD K01
STOP K02
PLAY K03
REWIND/ K04
F FWD/ K05
SHIFT K06
VARI PITCH/ P.EDIT K07
AUTO RTN/PLAY K08
LOCATE/ LOC MEM K09
HOLD/ K10
STORE K11

4-5. Self Check

Key/Button/Jog Dial No.
EDIT K12
UNDO/REDO K13
EXECUTE/YES K14
EXIT/NO/ EJECT K15
AUTO RTN START K16
AUTO PUNCH IN K17
AUTO PUNCH OUT K18
AUTO RTN END K19
CLIPBOARD IN K20
CLIPBOARD OUT K21
DISP SEL K22

: Blinking

SYNC OUT DRIVE

CLK

AUTO A.PUNCH

SCSI

Key/Button/Jog Dial No.
SETUP K23
TIME BASE SEL K24
RECORD TRACK 1/L K25
RECORD TRACK 2/R K25
RECORD TRACK 3/L K25
RECORD TRACK 4/R K25
RECORD TRACK 5/L K25
RECORD TRACK 6/R K25
JOG DIAL (C.W.) J 00 ~ 20
JOG DIAL (C.C.W.) J -00 ~ -19

This mode automatically tests the following points in order.

• SCSI bus

• ATA bus

• MIDI in/out circuit

• S/P DIF digital signal (44.1kHz)

• 32kHz digital signal

• Vari-pitch circuit

• A/D and D/A circuit (Input Monitor)

14

<Cable Connection in “Self Check” Mode>

R MON OUT L

R ST OUT L

2 AUX SEND 1

POWER

SCSI

AUX RTN 2

R MONO/L

DATA

DATA

OUTIN

AUX RTN 1

R MONO/L

PUNCH
IN/OUT

MIDI

4 INSERT 3

FD-4

INPUT 3

INPUT 4

MIDI
OUT

RECORDER IN
R

LIN

SYNC OUT DRIVE

CLK

AUTO A.PUNCH

SYNC OUT DRIVE

CLK

AUTO A.PUNCH

SYNC OUT DRIVE

CLK

AUTO A.PUNCH

External

SCSI Drive

SCSI

SCSI

SCSI

Optical

Cable

MIDI cable

Apply

audio signal.

To start the Self Check mode, press the EXECUTE/YES
key when “?” is blinking (condition indicated in the previous
page).

As shown in the left, “SelfCheck”, “Initial..”, name of
connected SCSI drive (The example in the left shows that
the ZIP drive is connected to the FD-4 SCSI port.) and “ATA
Bus C (Check)” appear on the FD-4 LCD display in order.

Since a 2.5" internal E-IDE hard disk drive is not installed
in the FD-4, the Self Check mode comes to a standstill at
“ATA Bus Check” test.

In order to continue the Self Check mode, press the
EXECUTE/YES key.

If the FD-4 is in a good shape, “Check OK!” will be displayed
and the FD-4 is automatically put into Input Monitor mode
with all the RECORD TRACK LEDs and RECORD LED
flashing after checking the points mentioned in the previous
page. In this condition, if a signal is applied to the FD-4
RECORDER IN (L, R) jacks, its level can be monitored on
the bargraph level meter.

1234 LR

SYNC OUT DRIVE

CLK

AUTO A.PUNCH

SYNC OUT DRIVE

CLK

AUTO A.PUNCH

To quit the Self Check mode, press the EXIT/NO key when
“Check OK!” is displayed.

SCSI

SCSI

15

FD-4

The followings are examples of error message when the FD-4 is not working properly.

• SCSI function

SYNC OUT DRIVE

CLK

AUTO A.PUNCH

• Digital Signal in/out (Fs: 44.1kHz)

SYNC OUT DRIVE

CLK

AUTO A.PUNCH

• Vari-pitch function

44.1kHz

SCSI

SCSI

• MIDI function

SYNC OUT DRIVE

CLK

AUTO A.PUNCH

• Digital Signal in/out (Fs: 32kHz)

SYNC OUT DRIVE

CLK

AUTO A.PUNCH

SCSI

SCSI

4-6. Offset Display

16

VARI PITCH

SYNC OUT DRIVE

CLK

AUTO A.PUNCH

SCSI

: Blinking

This mode determines if the offset value against a master
machine should be displayed or not when the FD-4 is
working as a slave machine.

If you would like to turn ON the offset display, press the

SYNC OUT DRIVE

CLK

AUTO A.PUNCH

SCSI

EXECUTE/YES key while “?” is blinking. (The default
setting is “off”.) Then, turn the jog dial C.W and press the
EXECUTE/YES key.

In order to display the offset value, select the “MTC” by the

OFFSET

SMHDFSF

TIME BASE key and the “REMAINING TIME” as DISP
SEL key.

CAUTION:

SYNC OUT DRIVE

CLK

AUTO A.PUNCH

SCSI

There might be a case that the percentage display does

1.
not indicate “0.0%” exactly when the FD-4 is working as
a slave machine and is synchronizing with a master
machine. This is caused by a difference of internal clock
between both machines but there is nothing wrong with it.
The two-digit numbers displayed in the right of percentage

2.
display (“05” in the left example) is only for software
programming purpose.

4-7. Initializing Disk

FD-4

This mode initializes an external SCSI device connected to
the SCSI port or a 2.5" internal E-IDE hard disk drive. The
disk drive currently connected can be initialized.

SYNC OUT DRIVE

CLK

AUTO A.PUNCH

SCSI

After pressing the EXECUTE/YES key, “SURE?” will start
blinking in the LCD display. In this condition, pressing the
EXECUTE/YES key one more time would initialize the
selected disk drive.

This mode puts the disk back to the condition originally
formatted and is equal to “Quick Format”.

4-8. Flash ROM

: Blinking

SYNC OUT DRIVE

CLK

AUTO A.PUNCH

SCSI

In this case, the following procedures must be taken.

1.

Turn the switch S1 on the MAIN PCB assy to “EPROM” side.

2.

Mount and solder the EPROM sockets to “U31” and “U32” on the MAIN PCB assy.

3.

Plug the EPROMs into the sockets.

4.

Turn on the power of FD-4.

In this condition, the FD-4 is booted up using the system software inside the EPROMs. The next procedures to take are as
follows.

1.

Put the FD-4 into the Service Mode, select “FlashROM” and press EXECUTE/YES key. (“SURE?” is blinking.)

2.

Press the EXECUTE/YES key one more time to copy the system software from EPROMs to Flash ROM.

3.

Turn the switch S1 to “FLMEM” side.

4.

In order to confirm that the FD-4 is booted up using the system software inside the Flash ROM, turn off the power,
disconnect the EPROMs and turn the power back on again.

5.

After the confirmation, update the system software inside the Flash ROM through SCSI port again.

This mode is used when copying the system software from
EPROMs to Flash ROM.

As mentioned in the section “SOFTWARE UPDATE”, the
FD-4 software inside the Flash ROM can be updated through
SCSI port. However, if something wrong happens when
updating the software (e.g. A blackout occurred while
updating the software.), the FD-4 might not be able to boot
up the system software inside the Flash ROM.

4-9. Event Number

Individual Audio Files are continuously recorded in each track of program on the FD-4. However, the FD-4 disk
management system allows to create a “no signal recorded” section between Audio Files. This “no signal recorded”
section is handled as “Zero File”. As shown in the diagram below, Audio Files and Zero Files will be alternately recorded
on the FD-4 and each Audio File and Zero File are counted as individual “Event”. Thus, the number of events on a certain
track is calculated by summing up these Audio Files and Zero Files. Each track can accommodate up to 512 events but the
FD-4 will not newly record events when the number of events reach 508.

: Recorded part (shortest length: 740msec, Fs=44.1kHz)

ABS 0

Event No.

Audio File 1

123

: Non-recorded part (shortest length: 740msec, Fs=44.1kHz)

Zero File 1

Audio File 2

Zero File 2 Audio File 3

ABS END

45

ABS 23h 59m

17

FD-4

4-10. Free Block Check

SETUP

SYNC OUT DRIVE

CLK

AUTO A.PUNCH

SETUP

SYNC OUT DRIVE

CLK MTC

AUTO A.PUNCH

PLAY RTN

IDE SCSI

RHSL TAKE

: Blinking

SCSI

: Blinking

This Service Mode allows to check the Event Number
recorded on each track in one program on the FD-4.

In order to check, press the EXECUTE/YES key while “?”
is blinking.

The example in the left indicates that there are 3 events
created on track 1. By turning the jog dial C.W., you can
check the event number on track 2, 3, 4...

CAUTION:

If a long recording and/or many editing is committed, the
Event Number increases. If the Event Number is getting
closer to its maximum limit (508), please save/load the data
to/from an external DAT recorder or SCSI device. During
save/load procedures, Audio Files can be optimized and as
a result, the Event Number decreases.

This mode is used to check the condition of the diskette
inserted into an external SCSI drive connected to the FD-4.

SYNC OUT DRIVE

CLK

AUTO A.PUNCH

SYNC OUT DRIVE

CLK

AUTO A.PUNCH

SCSI

SCSI

If the Free Block indicates a large number even after
formatting the diskette and no signal is recorded, the diskette
can be judged to be in a bad condition.

18

5. ERROR CODE LIST

The chart below indicates the error code number and corresponding description. Since the error code list is basically
designed for our engineers to improve the software, the description is quite technical. If you find the FD-4 with one of the
error codes displayed, we encourage you to update the software first. In case updating the software does not solve the
problem, we would like you to inform us about details.

FD-4 ERROR CO DE LIST

FD-4

ERROR

CODE

1 Audio File address breaks into System File.
3 SCSI drive does not boot up correctly when in SCSI access operation.

9

10
11 Link_pointer indicates larger address (out of region) than Link_File address region in RAM.

12 “Pointer_addre” calculation of Link_Pointer is not correct.
14

15
16 “Pointer_addre” calculation of Link_Pointer during recording/reproducing is not correct.

20 src_cash_load: Improper access of link address occurred while PASTE editing.
21 bak_cash_load: Program link during PASTE/MOVE editing is incorrect.
22 bak_cash_load: Imcompatibility problem occurred on program link during PASTE/MOV E editing.
30 Error when ex ecuting MOVE editing. Improper Link Pointer. Error in “bak_cash_load” function.
31 Error when ex ecuting MOVE editing. Improper Link Pointer. Error in “bak_cash_load” function.
32 Error when ex ecuting MOVE editing. Improper Link Pointer. Error in “bak_cash_load” function.
35 Backup_Save:Error occurred when saving data to SCSI device.
36 Backup_Load: Error occurred when loading data from SCSI device.
38 Displayed in Test Mode only. SCSI device cannot be recognized during initial test.
40 dis_cah_load: Improper access occurred when recording/reproducing.
41 dis_cah_load: Improper access occurred when recording/reproducing.
42 dis_cah_load: Improper access occurred when recording/reproducing.
45 get_non_des_block: Remaining disk capacity is insufficient.
52 non_des_cash_save_sub: Improper access occurred when recording/reproducing.
60 remake_free_block: There was improper access to program management region.
61 remake_free_block: There was improper access to program management region.
62 remake_free_block: Number of manageable events exceeds limit.
63 remake_free_block: There was improper access to program management region.
64 remake_free_block: There is an overlapping section in program management region.
96 There was improper access to program management region.
97 There was improper access to program management region when saving System File.
99 There was improper access when fading in/out.

When saving system region sector, its address is registered in Free_block File during Free block File
checking procedure.

Link_pointer which links Audio File indicates smaller address (out of region) than Link_File address region in
RAM.

Link_Pointer during recording/reproducing indicates smaller address (out of region) than actual Link_File
address region.

Link_Pointer during recording/reproducing indicates larger address (out of region) than actual Link_File
address region.

DESCRIPTION

19