Yamaha D-24 Service Manual

MAIN-A, MAIN-B, MAIN-C: 3NA-V312430-3
S-SYNC: 3NA-V519530-2

2

Pattern side Pattern side Pattern side

Pattern side

MAIN-A Circuit BoardS-SYNC Circuit Board

MAIN-B Circuit BoardMAIN-C Circuit Board

D24

36

Note: See parts list for details of circuit board component parts.

FP 1/5–5/5: 3NA-V312440-2

3NA-V312440-3

5
5

Pattern sideComponent side

Pattern sideComponent side

Component side Pattern side

Component side Pattern side

Pattern side

Component side

RECORD READY

12345678

897

564

231

0/-

1 234567 8

to SUB(PANEL)-CN705

to SUB(PANEL)-CN703

to PS2/2-CN8

Light touch switch

G=Glay
B=Black

Push button
(VT810300) or
(VT839000)

FP1/5 Circuit Board

FP2/5 Circuit Board

FP3/5 Circuit Board

Push Button installation

FP 4/5 Circuit Board

FP 5/5 Circuit Board

PHONES

PHONES
LEVEL

to MAIN A-CN108to PS 1/2-CN11

POWER

REHE

REPEAT

ROLL
BACK

AB

SET

AUTO
PUNCH

OUTIN

to SUB(PANEL)

-CN707

LAST REC

PROJECT SEARCH

RTN TO ZERO

Jog shuttle

(VR625800)

Jog cover
(V3287700)

Knob

FP

Jog Suttle

FP 1/5

to SUB(PANEL)

-CN706

to SUB(PANEL)

-CN708

SOLO/SELECT

AUTO

INPUT

PEAK

HOLD

ALL

INPUT

FORMAT CHASE

CANCEL ENTER LOCATE

JOG/

DATA

JOG ON

TIME DISPLAY

V.TRACK

SELECT

EDIT UNDO/

REDO

VARI

SPEED

UTI­LITY

SET

UP

CAP-

TURE

ABS/

REL

RE-

MAIN

to SUB(PANEL)-CN704

SHUTTLE/

CURSOR

LOC MEM STORE

LOC MEM RECALL

PROJECT SELECT

MONITOR SELECT

D24

37

Note: See parts list for details of circuit board component parts.

ERROR MESSAGES

D24

38

If the D24 displays an error message, follow the instructions below.

Message

Sync no comm
TC not read
WC not read

FILE ERROR

DEV CONT ERR
SCSI BREAK n

FIFO UO ERR n
INVALID COM n
PARITY ERR n
SCSI OUT n

SCSI ERR nn

MEDIA ERR nn

DRIVE ERR nn

REC ERROR

TOO SHORT

DISK FULL

FS DIFFER

RECCH NOTSEL
MO PROTECT
PROJ PROTECT

DATA FULL

Meaning

The slave machine is not connected properly.
The timecode source cannot be read properly.
The wordclock source cannot be read properly.

The MO disk data is not correct.
SCSI communication error. External device

connection.
SCSI communication error. Command break.
SCSI communication error. FIFO under/over.
SCSI communication error. Invalid command.
SCSI communication error. Parity error.
SCSI communication error. Time out.
SCSI error. SCSI error other than those listed
above.

Error due to media.

Error due to media or drive.
An incorrectly recorded track has been detected

and its contents may be distorted. This message
may appear after recording on a disk containing
heavily edited tracks and is due to the D24’s
disk drive not been able to keep up with the
excessive workload.

The interval between the points is too short.

There is no space available for storing sound
files.
Recording is not possible because the sampling
rate of the selected project is not the same as
the cur-rent D24 setting.
No tracks are selected for recording.
The disk is write protected.
The project is write protected.

There is no space available for storing project
management files.

Remedy

Check the connections to the slave machine.
Check the timecode settings.
Check the wordclock settings.
Follow the instructions on the display. If “TURN OFF”
is displayed, turn the D24 off and then on again.

Follow the instructions on the display.
Follow the instructions on the display.

Follow the instructions on the display.
Follow the instructions on the display.
Follow the instructions on the display.
Follow the instructions on the display.

Follow the instructions on the display.
Try the following:

1) Clean the media or disk drive head.

2) Physically reformat the disk. If the error persists,
change the media.

Reload the disk. If the error persists, change the media.
If that doesn’t fix it, the drive may be broken.

Press the [UNDO] button to undo the last recording,
reduce the number of tracks selected for simultaneous
recording, and try recording again. Temporarily
assigning unused virtual tracks to main tracks is another
way to reduce the D24’s workload.

For part editing, the minimum interval between the start
and end points is 15 ms. For punch in/out recording, the
minimum interval is 15 ms. Increase the interval as
necessary.
Retrieve some disk space by using the Optimize function.
Delete or erase an unwanted project.

Set the sampling rate on the D24 to match that of the
project.

Select a track for recording.
Turn off the write protection.
Turn off the write protection.
Retrieve some disk space by using the Optimize
function.
Delete or erase an unwanted project.

SETTING THE SCSI ID

D24

39

Setting the SCSI ID of the internal MO disk drive involves removing the D24’s top cover and setting the DIP
switch located on the MO drive’s circuit board.

1 Remove the top-cover fixing screws (11), as

shown here.

2 Remove the top cover.

3 Using a small flat-bladed screwdriver, or

something similar, set DIP switches 1 through 3,
as listed below, to achieve the required SCSI ID.

SCSI IDs 6 and 7 are not listed, since they are reserved for other purposes.

SCSI ID

5
4
3

2 (default)

1
0

DIP switch number

1

ON

ON
OFF
OFF
OFF
OFF

2

OFF
OFF

ON

ON
OFF
OFF

3

ON

OFF

ON

OFF

ON

OFF

W: 480

Units: mm

12 132

12.9

4.1

H: 144 D: 383.9

355.1 11.8

D24

40

INITIALIZE

You can reset the D24 to its initial settings as follows.

1 Turn off the D24 Power switch.

2 While holding down the [RTN TO ZERO] button, turn on the D24 Power switch.

The D24 is initialized and “INITIALIZED” appears on the display.

CHECKING THE VERSION NUMBER

You can check the version number of the D24 system software as follows.

1 Turn off the D24 Power switch.

2 While holding down the [UTILITY] button, turn on the D24 Power switch.

The version number appears on the display.

UPDATING THE SYSTEM SOFTWARE

DIMENSIONS

See the Yamaha Professional Audio Web site at the address below for information on system updates.
<http://www.yamaha.co.jp/product/proaudio/homeenglish/>

EJECTING TROUBLESOME DISKS (EMERGENCY USE)

D24

41

If the D24 is turned off inadvertently, or the disk loading mechanism fails, you may not be able to eject a disk in
the normal way. In this case, the disk can be ejected using the supplied disk eject tool. Note that this technique
should only be used as a last resort, as frequent use may lead to malfunction.

1 Turn off the D24 Power switch.

2 Insert the disk eject tool into the manual eject hole, as shown below, and push gently to eject the disk.

3 The disk ejects.

D24

42

TEST PROGRAM

1. Measuring Conditions

• Unless specifically indicated, the unit is in the no MO DISC mode.

• All switches are set to OFF and the [PHONES LEVEL] is set to “0”

<Input Signal>

• With the MY8-AD card mounted in [SLOT 1], input a 1 kHz-10 dBmsine wave.

• Use the stereo plug to connect a 40 Ω load to the PHONES terminal.

2. Check Initial Operation of Main Circuit Board

With POWER ON, check that the CPU RUN indicator LEDs mounted on the MAIN-A circuit board are flashing.

GUI CPU & peripheral I/O: D101 (Red LED at front left side of main sheet.)
MEDIA CPU & peripheral I/O: D302 (Red LED at rear left side of main sheet.)
TIDSP & peripheral I/O: D301 (Green LED at rear left side of main sheet.)

3. Communication Inspection Between MAIN Circuit Board SUB Circuit Board

With POWER ON, check that OK is displayed on the fluorescent display tube.

Example:

4. Check ROM Version

Hold down the [Utility] key when turning on the power to display the ROM version in the fluorescent display tube.

(**.**is the version number)

5. Test Program

<Measuring Device>

Low-frequency oscillator, AC voltmeter, distortion meter, MY Card, SCSI compatible HDD (there are model restrictions),
device with VIDEO OUT, D24

<Preparations>

• Connect the inspection equipment (FAT D24) and main unit [TIME CODE IN/OUT] connector with a CANNON cable.

• Connect the inspection equipment (FAT D24) and main unit [SYNC IN/OUT] connector with D-SUB 15 PIN cable.

• Connect the [COAXIAL IN/OUT] connectors with RCA PIN cable.

• Connect the [MIDI IN/OUT] connectors with MIDI cable.

• Connect the D-SUB 9 PIN plug (Pin) connector for inspection to the [SERIAL I/O] connector. (Connect between 3
Pin 7 Pin and 2 Pin 8 Pin)

<Start>

Hold the [SETUP] key and turn on the power to enter the test program. The following will be displayed on the fluorescent
display tube.

(Due to MO mount processing, key entry is not accepted until
after normal operation has started, approximately 10 seconds.)

<Test Procedure>

Select test items: Use the keypad to enter the test item number. Press [ENTER] to execute the test.
Test result determination: The determination of each test item will be displayed as “OK” or “NG” in the fluorescent

tube display.

Interrupting the test: Press [CANCEL] to interrupt a test in progress. (If it is being used for test determination,

press [CANCEL] once again.)

YAMAHA D24, SCSI-IO OK ···

D24 V**.

**

00 DIAG RDY

D24

43

00

01

02

03

04

05

06

07

08

Play output system
check

Software version
information

GUI-CPU peripheral
operation
TI-DSP peripheral
operation
Media CPU peripheral
operation

Fluorescent tube
display

Switch/LED display

JOG/SHUTTLE input

COAXIAL I/O (Status)

01 VNO G***

M*** U***
02 G-CPU
03 TI DSP
04 M-CPU

05 VFD

06 SW

***

07 JOG 00

SHU 00

08 COAX1

No. Test Item Display Test Functions and Judgment Criteria

When the Media CPU sine wave program (1 CH=500 Hz, 6 CH= 440 Hz -3
dB) starts there is output to the output CH lines for the 1 CH, 6 CH for
[PHONES], [SLOT 1– 4]. The output terminals for these are measured.
The determinations are as follows.
(1) Display on fluorescent tube display: [WC]INT, [FS]48K, [BIT]24,

[TC]MASTER.
(2) Level meter display: 1 TR, 6 TR both display -3 dB.
(3) PHONE OUT: Asound can be heard on the

headphones or by waveform

observation. (L=500 Hz, R=440 Hz

40 ΩLoad 2.5 Vp-p)
(4) SLOT OUT: Check output of MY Card.
Checks the version of the software that has been installed for use by the G
(GUI CPU), M (Media CPU) and U (Panel CPU). (Check by the number
displayed in the * * * section.)
Checks the operation of peripheral devices the GUI-CPU is controlling.
OK or NG is displayed.
Checks the operation of peripheral devices the TI-DSP is controlling.
OK or NG is displayed.
Checks the operation of peripheral devices the Media CPU is controlling.
OK or NG is displayed.
Checks that each segment of the fluorescent tube display lights in sequence.
After all segments have been lit, press the [ENTER] key. An OK will be
displayed. If an abnormality occurs, press [CANCEL]. A NG will be
displayed and the test will be interrupted.
Checks the operation of the front panel switches and the lighting of the LEDs.
When the key displayed in the *** section of the fluorescent tube display is
pushed, the name of the key for the next test will be displayed if there has
been proper operation. If the switch has an LED, it also checks that the LED
lights when the key is pushed. When the check for all switches has been
completed, an OK is displayed.
If there is an abnormality or if the test is to be interrupted, press the [REC]
key. A NG will be displayed and the test will be stopped.
Checks that each data display is displaced by the title operation of [JOG]
and [SHUTTLE].
(1) JOG data displacement value

In + direction (clockwise) hexadecimal display:

00 01 02 FF 00 01 02

In - direction (counterclockwise) hexadecimal display:

00 FF FE 01 02 FF FE

(2) SHUTTLE data displacement value

In + direction (clockwise) hexadecimal display:

00 01 02 03 04 05 06 07

In - direction (counterclockwise) hexadecimal display:

00 FF FE FD FC FB FA F9
After all data displacement values have been checked, press the [ENTER]
key and an OK is displayed. If there is an abnormality, press the [CANCEL]
key. A NG will be displayed and the test will be stopped.
Checks the sending and receiving of channel status signals.
If normal, an OK is displayed. If there is an abnormality, NG will be displayed
and the test will be stopped.

Test Items

D24

44

09

10

11

12

13

14

15

System clock (FS)
detection

VARI SPEED
Variable operation

RTC operation, Date
registration

SERIAL I/O

REMOTE/SYNC I/O

VIDEO IN

TIME CODE OUT

09 FS

10 VARI

11 RTC

********

12 SERIAL

13 REMOTE

14 VIDEO

15 TC OUT
00:00:00:00

No. Test Item Display Test Functions and Judgment Criteria

Checks the result of the automatic measurement of the oscillating frequency of
the FS signals (44.1 kHz, 48.0 kHz) for the internal system clock generator.
First it measures the frequency of the 44.1 kHz signal, then the frequency
of the 48.0 kHz signal. If both frequencies are normal, an OK is displayed.
If there is an abnormality, a NG is displayed. In addition, it also checks that
“44.1 K” and “48 K” are lit in the FS area of the fluorescent display tube after
each signal frequency has been measured.
Automatically measures and checks the FS signals (44.1 kHz, 48.0 kHz)
oscillating frequencies at 5 step settings.
First it measures the frequency of the 44.1 kHz signal settings, then the frequency of
the 48.0 kHz signal settings at each of the 5 steps (-6.00% -3.00% 0.00%
+3.00% 6.00%), automatically makes the settings and measures the oscillating
frequency at each step. If both frequencies are normal, an OK is displayed.
If there is an abnormality, NG will be displayed and the test will be stopped.
Checks the date registration and operation of the Real Time Clock.
Date recording: Press the [CANCEL] key and all the data in the *** section

will be displayed as “0”. Use the keypad to enter the date in
AD format in the following sequence: year / month / day /
hour / minute / seconds. Press the [Enter] key to set. (In the
AD format, only the last two digits are entered. The entry for
May 6, 2000 at 15 minutes and 9 seconds past 3 o’clock

(3:15:09 PM) would appear as “000506151509”.
When the [ENTER] key is pushed and the date is registered, check that the
seconds display has started counting. When the [ENTER] key is pushed
again, an OK is displayed. If there is an abnormality, NG will be displayed
and the test will be stopped.
Checks that the SERIAL signal (RS-422) is being sent and received.
Prior to the test, connect the inspection connector (D-SUB 9 PIN) to the
[SERIAL IN/OUT] connector. If it is normal an OK is displayed. If there
is an abnormality, NG will be displayed and the test will be stopped
Checks that the SERIAL signal for REMOTE/SYNC (RS-485) is being
sent and received.
Prior to the test, connect a D-SUB 15 PIN cable to the inspection equipment
(FAT D24) and [SYNC IN/OUT] connector of the main unit. If it is normal,
an OK is displayed. If there is an abnormality, NG will be displayed and the
test will be stopped.
Checks the operation of the VIDEO vertical synchronization signal count function.
If it is normal, an OK is displayed. If there is an abnormality, NG will be
displayed and the test will be stopped.
Checks the output of the Time Code Generator.
Prior to the test, connect a CANNON cable to the inspection equipment (FAT
D24) and the [TIME CODE IN/OUT] connector on the main unit. When the
test is started, the receiving time data display on the fluorescent display tube
starts to count upward. When the test program for the inspection equipment
(FAT D24) is started and Test No. 16 is executed, the receiving time data on
the inspection equipment and the receiving time data on the main unit display
the same time and the counting up of the data is checked. The [ENTER] key
on the main unit is pushed. If the test is normal, an OK is displayed. If there is
an abnormality, NG will be displayed and the test will be stopped.

D24

45

16

17

18

19

20

21

22

TIME CODE IN

SCSI operation

SLOT

Data initialize

EXIT
(Inspection
completed)

SYNC MASTER

SYNC SLAVE

16 TC IN

XLR

00:00:00:00

17 SCSI

18 BAY IO
SLOT 1 ENTER

19 INIT RDY

20 EXIT

21

SYNC-M ***

22

SYNC-S ***

No. Test Item Display Test Functions and Judgment Criteria

Checks the Time Code Reader input.
Prior to the test, connect a CANNON cable to the inspection equipment (FAT
D24) and the [TIME CODE IN/OUT] connector on the main unit. When the
test program is started on the inspection equipment (FAT D24) and Test No.
15 is executed, the receiving time data display on the fluorescent display tube
starts to count upward. The receiving time data on the inspection equipment
and the receiving time data on the main unit display the same time and the
counting up of the data is checked
Next, push the [ENTER] key on the main unit and the XLR display on the
fluorescent display tube will change to RMT. Also at this time, the receiving
time data on the inspection equipment and the receiving time data on the main
unit display the same time and the counting up of the data is checked.
Push the [ENTER] key one more time. If the test is normal, an OK is displayed.
If there is an abnormality, NG will be displayed and the test will be stopped.
Checks the internal and external SCSI operations.
Prior to the test, connect a SCSI cable to the HDD that is D24 operation
guaranteed (one that has been formatted in the normal mode). (The SCSI
ID is “0” or “1”.) If the test is normal, an OK is displayed. If there is an
abnormality, NG will be displayed and the test will be stopped.
Checks the connection of the SLOT for MY Card.
Prior to the test, mount MY SLOT CHECK CARD in [SLOT 1-4]. Press the
[ENTER] key and [SLOT 1] is checked. If it is normal, OK and GO TO
SLOT 2 will be displayed. The check then moves to [SLOT 2]. This same
process is also carried out for [SLOT 3] and [SLOT 4]. If all connections are
normal, an OK is displayed. If there is an abnormality, NG will be displayed
and the test will be stopped.
Initializes basic data with exception of date data.
Once this test is started, the RDY display section of the fluorescent display
tube will flash. Press the [ENTER] key to execute the initialization. To
interrupt the test, press [CANCEL]. A NG will be displayed and the test will
be stopped.
Removes unit from test mode and restores it to standard mode.
Press the [ENTER] key and if all test items have been completed, an OK will
be displayed. After a few seconds, the unit will be in the same mode as it is
after POWER ON. If one of the test items has not been completed, a NG will
be displayed. Press the [CANCEL] key to return to the test mode and execute
the incomplete tests.
Checks the output of the SYNC MASTER.
Prior to the test, connect a D-SUB 15 PIN cable to the inspection equipment
(FAT D24) and [SYNC IN/OUT] connector of the main unit. Start the test
program for the inspection equipment (FAT D24) is started and Test No. 22.
Each time the [ENTER] key is pushed on the main unit, the *** section display
on both the main unit and the inspection equipment will start to count up
simultaneously and can be checked.
Press the [CANCEL] key on the main unit. If the test is normal, an OK is displayed.
If there is an abnormality, NG will be displayed and the test will be stopped.
Checks the SYNC SLAVE input.
Prior to the test, connect a D-SUB 15 PIN cable to the inspection equipment
(FAT D24) and [SYNC IN/OUT] connector of the main unit. The test
program is started on the inspection equipment (FAT D24) and Test No. 21
is executed. Each time the [ENTER] key is pushed on the test equipment,
the *** section display on both the main unit and the inspection equipment
will start to count up simultaneously and can be checked.
Press the [CANCEL] key on the inspection equipment. If the test is normal, an
OK is displayed. If there is an abnormality, NG will be displayed and the test
will be stopped.