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MDF3
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Table of contents
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Yamaha MDF3 User Manual

FCC INFORMATION (U.S.A.)
1. IMPORTANT NOTICE: DO NOT MODIFY THIS UNIT!
This product, when installed as indicated in the instructions contained in this manual, meets FCC requirements. Modifications not expressly approved by Yamaha may void your authority, granted by the FCC, to use the product.
2. IMPORTANT: When connecting this product to accessories and/or another product use only high quality shielded cables. Cable/s supplied with this product MUST be used. Follow all installation instructions. Failure to follow instructions could void your FCC authori­zation to use this product in the USA.
Relocate either this product or the device that is being affected by the interference. Utilize power outlets that are on different branch (circuit breaker or fuse) circuits or install AC line filter/s. In the case of radio or TV interference, relocate/reorient the antenna. If the antenna lead-in is 300 ohm ribbon lead, change the lead-in
to co-axial type cable. If these corrective measures do not produce satisfactory results, please contact the local retailer authorized to distribute this type of
product. If you can not locate the appropriate retailer, please contact Yamaha Corporation of America, Electronic Service Division, 6600 Orangethorpe Ave, Buena Park, CA90620
The above statements apply ONLY to those products distributed by Yamaha Corporation of America or its subsidiaries.
* This applies only to products distributed by YAMAHA CORPORATION OF AMERICA.
1
PRECAUTIONS
PLEASE READ CAREFULLY BEFORE PROCEEDING
* Please keep these precautions in a safe place for future reference.
WARNING
Always follow the basic precautions listed below to avoid the possibility of serious injury or even death from electrical shock, short-circuiting, damages, fire or other hazards. These precau­tions include, but are not limited to, the following:
• Do not open the instrument or at­tempt to disassemble the internal parts or modify them in any way. The instrument contains no user­serviceable parts. If it should appear to be malfunctioning, discontinue use immediately and have it in­spected by qualified Yamaha ser­vice personnel.
• Do not expose the instrument to rain, use it near water or in damp or wet conditions, or place containers on it containing liquids which might spill into any openings.
• If the AC adaptor cord or plug be­comes frayed or damaged, or if there is a sudden loss of sound dur­ing use of the instrument, or if any unusual smells or smoke should
2
appear to be caused by it, immedi­ately turn off the power switch, dis­connect the adaptor plug from the outlet, and have the instrument in­spected by qualified Yamaha ser­vice personnel.
• Use the specified adaptor (PA-3B or an equivalent recommended by Yamaha) only. Using the wrong adaptor can result in damage to the instrument or overheating.
• Before cleaning the instrument, al­ways remove the electric plug from the outlet. Never insert or remove an electric plug with wet hands.
• Check the electric plug periodically and remove any dirt or dust which may have accumulated on it.
CAUTION
Always follow the basic precautions listed below to avoid the possibility of physical injury to you or others, or damage to the instrument or other property. These precautions include, but are not limited to, the following:
• Do not place the AC adaptor cord near heat sources such as heaters or radiators, and do not excessively bend or otherwise damage the cord, place heavy objects on it, or place it in a position where anyone could walk on, trip over, or roll anything over it.
• When removing the electric plug from the instrument or an outlet, al­ways hold the plug itself and not the cord.
• Do not connect the instrument to an electrical outlet using a multiple­connector. Doing so can result in lower sound quality, or possibly cause overheating in the outlet.
• Unplug the AC power adaptor when not using the instrument, or during electrical storms.
• Always make sure all batteries are inserted in conformity with the +/– polarity markings. Failure to do so might result in overheating, fire, or battery fluid leakage.
• Always replace all batteries at the same time. Do not use new batter­ies together with old ones. Also, do not mix battery types, such as al­kaline batteries with manganese batteries, or batteries from different makers, or different types of batter­ies from the same maker, since this can cause overheating, fire, or bat­tery fluid leakage.
• Do not dispose of batteries in fire.
• Do not attempt to recharge batter­ies that are not intended to be charged.
(4)
PRECAUTIONS
PLEASE READ CAREFULLY BEFORE PROCEEDING
* Please keep these precautions in a safe place for future reference.
CAUTION
Always follow the basic precautions listed below to avoid the possibility of physical injury to you or others, or damage to the instru­ment or other property. These precautions include, but are not limited to, the following:
• If the instrument is not to be in use for a long time, remove the batter­ies from it, in order to prevent pos­sible fluid leakage from the battery.
• Keep batteries away from children.
• Before connecting the instrument to other electronic components, turn off the power for all components. Be­fore turning the power on or off for all components, set all volume lev­els to minimum.
• Do not expose the instrument to excessive dust or vibrations, or ex­treme cold or heat (such as in direct sunlight, near a heater, or in a car during the day) to prevent the pos­sibility of panel disfiguration or dam­age to the internal components.
(4)
• Do not use the instrument near other electrical products such as televisions, radios, or speakers, since this might cause interference which can affect proper operation of the other products.
• Do not place the instrument in an unstable position where it might ac­cidentally fall over.
• Before moving the instrument, re­move all connected adaptor and other cables.
• When cleaning the instrument, use a soft, dry cloth. Do not use paint thinners, solvents, cleaning fluids, or chemical-impregnated wiping cloths. Also, do not place vinyl or plastic objects on the instrument, since this might discolor the panel or keyboard.
• Do not rest your weight on, or place heavy objects on the instrument, and do not use excessive force on the buttons, switches or connectors.
• Do not operate the instrument for a long period of time at a high or un­comfortable volume level, since this can cause permanent hearing loss. If you experience any hearing loss or ringing in the ears, consult a phy­sician.
Yamaha cannot be held responsible for damage caused by improper use or modifications to the instrument, or data that is lost or destroyed.
Always turn the power off when the in­strument is not in use.
Make sure to discard used batteries according to local regulations.
3
Handling the Floppy Disk Drive(FDD) and Floppy Disk
Precautions
• Be sure to handle floppy disks and treat the disk drive with care. Follow the important precautions below.
Compatible Disk Type
• 3.5” 2DD and 2HD type floppy disks can be used. A blank 2HD floppy disk has been included with your instrument for you to record your performances.
■ Inserting/Ejecting Floppy Disks
To insert a floppy disk into the disk drive:
• Hold the disk so that the label of the disk is facing upward and the sliding shutter is facing forward, towards the disk slot. Carefully insert the disk into the slot, slowly pushing it all the way in until it clicks into place and the eject button pops out.
To eject a floppy disk:
• Before ejecting a floppy disk make sure that the floppy disk drive is not in opera­tion (the DISK IN USE indicator should be off.)
• Press the eject button slowly as far as it will go; the disk will automatically pop out. When the disk is fully ejected, care­fully remove it by hand.
• Never attempt to remove the disk or turn the power off during recording, reading and playing back. Doing so can damage the disk and possibly the disk drive.
• If the eject button is pressed too quickly, or if it is not pressed in as far as it will go, the disk may not eject properly. The eject button may become stuck in a half-pressed position with the disk extending from the drive slot by only a few millimeters. If this happens, do not attempt to pull out the partially ejected disk, since using force in this situation can damage the disk drive mechanism or the floppy disk. To remove a partially ejected disk, try pressing the eject button once again, or push the disk back into the slot and then repeat the eject procedure.
• Be sure to remove the floppy disk from the disk drive before turning off the power. A floppy disk left in the drive for extended periods can easily pick up dust and dirt that can cause data read and write errors.
Cleaning the Disk Drive Read/Write Head
• Clean the read/write head regularly. This instrument employs a precision magnetic read/write head which, after an extended period of use, will pick up a layer of magnetic particles from the disks used that will eventually cause read and write errors.
• To maintain the disk drive in optimum working order Yamaha recommends that you use a commercially-available dry-type head cleaning disk to clean the head about once a month. Ask your Yamaha dealer about the avail­ability of proper head-cleaning disks.
Never insert anything but floppy disks into the disk drive. Other objects may cause damage to the disk drive or floppy disks.
4
Handling the Floppy Disk Drive(FDD) and Floppy Disk
■ About the Floppy Disks
To handle floppy disks with care:
• Do not place heavy objects on a disk or bend or apply pressure to the disk in any way. Always keep floppy disks in their protective cases when they are not in use.
• Do not expose the disk to direct sunlight, extremely high or low tempera­tures, or excessive humidity, dust or liquids.
• Do not open the sliding shutter and touch the exposed surface of the floppy disk inside.
• Do not expose the disk to magnetic fields, such as those produced by televisions, speakers, motors, etc., since magnetic fields can partially or completely erase data on the disk, rendering it unreadable.
• Never use a floppy disk with a deformed shutter or housing.
• Do not attach anything other than the provided labels to a floppy disk. Also make sure that labels are attached in the proper location.
YAMAHA is not responsible for damage caused by improper handling or operation.
To protect your data (Write-protect Tab):
• To prevent accidental erasure of important data, slide the disk’s write­protect tab to the “protect” position (tab open).
Write protected Write enabled
Data backup
• For maximum data security Yamaha recommends that you keep two cop­ies of important data on separate floppy disks. This gives you a backup if one disk is lost or damaged. To make a backup disk use the Backup func­tion on page 54.
YAMAHA provides no guarantee against disk damage.
5
* Apple and Macintosh are the registered trademarks of Apple Computer, Incorporated.
* Atari is the registered trademark of Atari Corporation.
* IBM PC/AT is the registered trademark of International Business Machines Corporation.
* MS-DOS is the registered trademark of Microsoft Corporation.
* The company names and product names in this owner’s manual are the trademarks or
registered trademarks of their respective companies.
6
C
ONGRATULATIONS
You are now the proud owner of a Yamaha MDF3 MIDI Data Filer. This compact data storage unit is capable of storing bulk data from nearly any MIDI-equipped synthesizer, tone generator, or sequencer on convenient 3.5" 2HD/2DD floppy disks. The MDF3 is also able to record and play back sequencer data in realtime, a feature which makes it handy for use as a portable sequencer.
To put the MDF3 to work, you will need to connect it to at least one other MIDI device. If you own the Yamaha QX3 or a MIDI­equipped personal computer with a 3.5" disk drive, the MDF3 will also be able to read the data from disks you create with these devices, for maximum flexibility and convenience in data management.
This Owner’s Manual has been written for easy reference, and includes helpful advice for a wide range of applications. In order to take full advantage of the many capabilities of your MDF3, we urge you to read through the manual carefully first, then keep it on hand for future reference.
F
EATURES
!
• MIDI data recorder capability
The MDF3 is able to receive, store, and re-transmit MIDI System Exclusive data from nearly any MIDI instrument with bulk data transmission capability, including devices made by manufacturers other than Yamaha. The MDF3 can also read and transmit bulk data files created by the Yamaha MDF2 Data Filer and the QX3 sequencer in that device’s MDR mode.
• Sequencer capability
The MDF3 is capable of recording sequence data to disk, and playing back this data in realtime. It can also play back data files written by other MIDI devices using Standard MIDI File format 0/1, as well as ESEQ sequence files created by
the Yamaha QX3, etc. (You can also play back the MDF2’s SEQ data). Other convenient playback functions allow you to play a program of up to 99 sequence data files in a speci­fied order, and to play back files repeatedly in an endless loop.
• Ample data storage capacity
The MDF3 can store as many as 99 bulk or sequence files — on each 2HD/2DD floppy disk. If necessary, a single bulk or sequence data file can occupy the disk’s total ca­pacity of roughly 1,200/600 kilobytes of data. In sequencer mode, this corresponds to approximately 150,000/75,000 notes’ worth of sequence data.
7
A
BOUT THIS MANUAL
This Owner’s Manual introduces the MDF3’s functions in an order close to that in which you are most likely to be using them. As you read through the manual, you will soon learn how the MDF3 works; and you will find, in addition, a number of hints on how you can put its features to use.
Nearly every operation in this manual is described as a series of simple steps, often including diagrams that make the procedure easy to follow. Supplementary infor­mation about the operation will be preceded by the words ”Note”, “Hint”, or ”Cau­tion”. Hints and notes serve as clues to details about the operation that you will not want to overlook.
For further information regarding the operation of the MDF3, you can refer to the following sections:
■
MDF3 Mode Overview (page 20)
This map summarizes the MDF3’s major functions, and serves as a convenient guide to common operations.
■
What Error Messages Tell You (page 63)
If an error message appears in the LCD while you are using the MDF3, refer to this appendix for an explanation of the problem and advice on how to solve it.
8
This manual is accompanied by the following supplementary documentation:
■
MIDI Implementation Chart
This chart summarizes the MDF3’s MIDI capabilities, and helps you to determine whether the MDF3 is compatible with the other equipment you are using.
■
MIDI Data Format
Advanced MIDI users who do their own programming will want to refer to this document for a detailed description of the MIDI Data Formats used by the MDF3.
T
ABLE OF CONTENTS
ABOUT THIS MANUAL ................................................ 8
BASIC TERMS AND KEYWORDS ............................... 10
INTRODUCING THE MDF3....................................... 12
PREPARING TO USE THE MDF3 ................................ 14
Supplying Power ...................................................... 14
Connecting a MIDI Device ...................................... 15
Turning the Power On .............................................. 15
Formatting a Floppy Disk ......................................... 16
Handling Floppy Disks ............................................. 18
Protecting the data on a disk .................................... 19
MDF3 MODE OVERVIEW .......................................... 20
MDR MODE ................................................................ 23
Receiving Bulk Data ................................................ 24
Transmitting Bulk Data ............................................. 27
Notes on MDR Data Reception and Transmission .... 29
SEQ MODE .................................................................. 31
Recording Sequence Data ........................................ 32
Playing Back Sequence Data .................................... 35
Notes on SEQ Data Recording and Playback ........... 38
JOB MODE .................................................................. 39
Repeating Playback .................................................. 40
Creating a Playback Program ................................... 41
Changing the Record Tempo .................................... 43
Selecting a MIDI Sync Mode .................................... 44
Enabling MIDI Control Messages ............................. 45
Notes on MIDI Synchronization ............................... 46
UTILITY MODE ........................................................... 47
File Names in UTILITY Mode ................................... 48
Renaming Files ........................................................ 49
Deleting Files ........................................................... 51
Copying or Appending Files ..................................... 52
Copying Disks .......................................................... 54
Formatting Disks ...................................................... 56
Displaying Disk Information .................................... 57
THE STANDARD MIDI FILE AND ESEQ FORMATS .... 58
ADVANCED FILE MANAGEMENT TECHNIQUES..... 59
Reading MDF3 Disks with a Computer .................... 59
Changing MDF3 File Name Extensions .................... 60
APPLICATIONS ........................................................... 62
A Portable MIDI Playback System ............................ 62
An Extended MIDI System ........................................ 62
WHAT ERROR MESSAGES TELL YOU ....................... 63
ABOUT THE MIDI IMPLEMENTATION CHART ....... 65
SPECIFICATIONS ........................................................ 66
INDEX .......................................................................... 67
JOBSEQMDR UTIL
9
B
ASIC TERMS AND KEYWORDS
MIDI-related terminology
Here we define several basic terms used in this manual. These terms are frequently used in describing the functions of MIDI equipment.
MIDI An abbreviation for Musical Instrument Digi-
tal Interface, which is the name of an interna­tional standard providing for the communica­tion of data between electronic musical instru­ments. MIDI allows musical instruments such as synthesizers and drum machines to com­municate with each other, and to be controlled by sequencers or computers.
MIDI Any piece of electronic equipment capable of
device receiving or sending data in a manner that com-
plies with the MIDI standard. This term is of­ten applied to synthesizers, tone generators, rhythm machines, and sequencers; however, it also includes a variety of peripheral devices including signal processors and patch bays, not to mention MIDI data recorders such as the MDF3.
MIDI data Data in a format that complies with the MIDI
standard. MIDI data can be divided between two broad categories : sequence data and bulk data.
sequence The data used to record and play back music.
data Generally speaking, sequence data consists of
note on and off messages, control change mes­sages, and program change messages. In spe­cial cases, however, it may also include cer­tain types of system exclusive data.
bulk data Data transmitted in units known as blocks, usu-
ally for the purpose of storage or retrieval. Each MIDI device usually transmits bulk data in a unique format that distinguishes it from the bulk data of other devices; thus, it is also known by the name “system exclusive data”. Bulk data is usually not directly related to a musical per­formance; rather, it is used as a means for trans­ferring large blocks of data, such as voice data, samples, or system setup data, between two MIDI devices.
bulk dump A transmission of bulk data from one MIDI
device to another.
10
Keywords for MDF3 operation
The terms defined below are used throughout the manual to describe functions pe­culiar to the MDF3. The same words are frequently used in describing other MIDI devices, as well; but keep in mind that in many cases the actual function in question may differ considerably from that performed by the MDF3.
file A position on a disk where data is stored and
assigned a name. The MDF3 is capable of man­aging up to 99 files on a single disk. The num­ber of files that can be created on any given disk is physically limited by the size of the files and the disk’s capacity of approximately 1,200 (MF2HD)/600 (MF2DD) kilobytes.
MDR mode The mode of operation in which the MDF3 is
used to receive and transmit MIDI bulk data.
MDR data The contents of the data file that is created
when the MDF3 receives bulk data from an­other MIDI device.
reception Generally, the receiving by one MIDI device
of MIDI data from another. In this manual, “re­ception” refers specifically to the MDF3’s re­ception of bulk data. The MDF3 automatically writes the bulk data it receives to disk as an MDR data file.
transmission Generally speaking, the sending of data from
one MIDI device to another. In this manual, “transmission” means specifically the transmis­sion of MDR data by the MDF3. When the MDF3 transmits the contents of an MDR data
file, it simultaneously reads data from the disk and outputs it via the MIDI OUT jack.
SEQ mode The mode of operation in which the MDF3 is
used to record and play back sequence data.
SEQ data The contents of the file that is created when
the MDF3 records sequence data. Such data is often referred to as “song data”. Strictly speak­ing, however, such a file can contain as many as several songs, or as little as a single phrase.
recording The reception of MIDI sequence data. Record-
ing is different from the reception of bulk data in that the data is received in realtime. The MDF3 automatically writes the sequence data it receives to disk as a SEQ data file.
playback The transmission of sequence data from one
MIDI device to another. Playback differs from the transmission of bulk data in that the se­quence data is transmitted in realtime. When the MDF3 plays back a SEQ data file, it simul­taneously reads data from the disk and outputs it via the MIDI OUT jack.
11
I
NTRODUCING THE
MDF3
Front panel
r t
w
q
y u i
e
w LCD The LCD displays a variety of information to as-
sist you in operating the MDF3.
e Mode keys These keys allow you to switch between the
MDF3’s four operating modes. The MDF3’s modes — MDR mode, SEQ mode, JOB mode, and UTILITY mode — are outlined in the MDF3 Mode Overview on page 20.
r CURSOR keys These keys move the cursor in the LCD to the left
or right. They can also be used to fast forward or rewind a file during playback in SEQ mode.
t FILE DATA These keys are used to select a file ( in the MDR
keys and SEQ modes) or a function (in the JOB and
UTILITY modes). They can also be used to change the tempo during playback in SEQ mode.
y REC key This key is used in combination with the START/
STOP key to begin the reception/recording of data
in MDR and SEQ modes.
u PAUSE key This key pauses the recording or playback of a
file in progress in SEQ mode .It can also be used in combination with the REC key to tell the MDF3 to standby for recording in this mode.
q MIDI LED This LED lights when the MDF3
is receiving MIDI data. Note that it does not light when data is be­ing transmitted, however.
12
i START/STOP This key is used to start and stop reception/
key recording or transmission/playback in MDR and
SEQ modes. It is also used to execute functions in the JOB and UTILITY modes.
Rear Panel
Side Panel
!4
o !0 !1 !2 !3
o MIDI OUT This jack outputs MIDI data.
!0 MIDI IN Received MIDI data is input via this
jack.
!1 FOOT SW This jack enables START/STOP control
by pressing the foot switch (optional Yamaha FC4, FC5, etc.) if it is con­nected.
22
!
2 DC IN The DC plug of an optional AC power
22
adapter (Yamaha PA-3B) can be con­nected here.
!3 POWER This switch turns the power to the
MDF3 on and off.
!6
!5
!4 Disk Drive This 3.5" disk drive is capable of ac-
cepting both 2HD and 2DD floppy disks.
!5 Eject button This button ejects the floppy disk from
the disk drive.
!6 Disk Access This LED lights when data is being
LED written to or read from a disk. Never
attempt to remove a disk from the disk drive while this lamp is lit.
13
P
REPARING TO USE THE

Supplying Power

MDF3
Using an Optional AC adaptor
If you use the MDF3 often, you will probably want to power it with an AC power adaptor. The MDF3 can be powered by the Yamaha PA-3B power adaptor, which is available for pur­chase separately.
Before you connect the adaptor, check to make sure that the POWER switch on the rear panel is turned off.
Plug the round end of the adaptor cord into the DC IN jack on the back panel of the MDF3, then plug the adaptor itself into an AC outlet.
PA-3B
DC IN
Caution:
in your locale. Do not use an adaptor other than PA-3B. Any other AC adaptor using different voltage can damage the MDF3.
Unplug the AC power adaptor when not using the instrument, or during electrical storms.
14
Be sure to use a power adaptor that is suited to the voltage
Using Batteries
Under normal operating conditions, the MDF3 can be oper­ated continuously for approximately three hours using a fresh set of batteries.
Before you begin to insert the batteries, check to make sure that the POWER switch on the rear panel is turned off. Then, place six size “AA” alkaline batteries in the battery compart­ment located on the underside of the unit.
+ – + –
+ – + –
+ – + –
Make sure that the batteries are oriented properly. The cor­rect orientation is indicated by the markings on the inside of the compartment.
Caution:
plete set of six new batteries. NEVER mix old and new batteries.
Do not use different types of batteries (e.g. alkaline and manganese) at the same time.
Be sure to remove the batteries from the MDF3 when you will not being using it for an extended period of time. If you leave batteries in the unit during extended periods of disuse, you run the risk of damage due to corrosion.
When the batteries run down, replace them with a com-

Connecting a MIDI Device

Turning the Power On

You need only one MIDI cable to connect the MDF3 to an­other MIDI device.
When you will be using the MDF3 to receive or record data, plug one end of the cable into the MIDI IN jack on the MDF3 back panel, and the other end into the MIDI OUT jack of the other device.
MIDI cable
MIDI IN
MDF3
MIDI OUT
extemal MIDI device
(keyboard, sequencer, etc)
To transmit or play back data from the MDF3 , simply reverse these connections.
MIDI cable
MIDI OUT
MDF3
MIDI IN
extemal MIDI device
(keyboard, sequencer, etc)
To turn on the MDF3, simply press the POWER switch on the rear panel.
The message “YAMAHA MDF3” will appear in the LCD for a few moments. Then, if there is no disk in the disk drive, this message will be replaced by the following display:
!~~~~No~disk~~~~
Insert the 3.5" 2HD/2DD floppy disk that came with your MDF3 in the disk drive. Be sure to insert the disk with the label side facing up and the arrow pointing toward the disk drive.
Push the disk in gently, until you hear it settle into the drive with a click.
If you have two MIDI cables, you can connect the MIDI IN jack of each device to the MIDI OUT jack of the other. This convenient arrangement will allow you to avoid the repeated changing of MIDI cable connections.
Note:
The MDF3 is capable of using 3.5" 2HD/2DD floppy disks.
Please do not try to use any other type of disk.
15

Formatting a Floppy Disk

Before the MDF3 can create files on a new disk, it must prepare the disk to accept the data using a procedure known as “formatting”. Follow the steps below to format the floppy disk that came with your MDF3.
1.
Enter the UTILITY mode.
Press the UTIL key. The LED above the key will light.
2.
Select ”05: Format”
Press the FILE DATA [+] key four times. The following message will appear in the LCD.
05:~~~~~~~Format Format~disk
~å
3.
Press the START/STOP key.
The LED above the key will flash, and the following mes­sage will appear in the LCD:
4.
Insert a disk.
If you have not already done so, insert the 2HD/2DD disk to be formatted in the disk drive.
Note:
If you format a disk that has been used before, any data it contains will be erased. Make absolutely sure that a disk does not contain any important data before you format it.
16
5.
Press the START/STOP key.
The LED above the key will light steadily, and the LCD will display a message tell­ing you what percentage of the disk has been formatted.
Formatting~~~93%
It should take approximately 70 seconds to format a single floppy disk. When the disk has been completely formatted, the START/STOP LED will begin to flash again, and the “Format disk” message will reappear.
6.
Format another disk.
If you wish to format another disk at this point, eject the disk and insert a new one. Then press the START/STOP key to be- gin formatting once more.
7.
Exit the function.
When you’re done formatting disks, press any mode key (MDR, SEQ, JOB, or UTIL) to exit the “Format” function.
17

Handling Floppy Disks

The 3.5" 2HD/2DD floppy disk is a reliable and convenient medium for data storage, capable of holding large amounts of data in a small package. The disk itself is a delicate piece of magnetic film, which is protected from dust and dirt by a hard plastic cover and a shutter. This design is capable of preserving your data against most contingencies. However, for the greatest reliability, you should observe a few basic cautions when handling your disks.
• Use 2HD/2DD disks. The MDF3 is not designed to handle disks meeting other specifications.
• Never remove a disk from the disk drive while the disk access LED is lit. Doing so can damage the floppy disk or the disk drive.
• Avoid touching the shutter of a disk. Never open the shutter and touch the actual disk surface.
• Avoid placing disks close to speakers, televisions, magnets, or other objects with magnetic fields. Even weak magnetic fields can damage or erase the data on a disk.
• Do not leave your disks in cars or other locations where they may be exposed to extreme heat or cold.
• Do not leave your disks in places where they may be exposed to condensation or extremely high humidity.
• Avoid using or storing disks in places where they may be exposed to large amounts of dust or dirt.
18
Follow these cautions scrupulously. Improper handling can render a disk useless, and may cause damage to the MDF3’s disk drive as well.

Protecting the data on a disk

If you turn a disk face down, you will find a small plastic tab in the lower right corner. This tab is a write-protect switch that you can use to prevent the accidental loss of valuable data. When this tab is in the up position (so the window is closed), the MDF3 will be able to read and write data to the disk normally.
To protect the data on a disk, push the tab down so that the window is open. The MDF3 will be able to read the data on the disk as usual. However, if you try to receive or record data using the disk, the MDF3 will display an error message telling you that the disk is write-protected.
You will see the same message if you try to format a write-protected disk or change the data it contains using one of the UTILITY mode functions.
Note:
To protect disks against accidental erasure, it is a good idea to set the protect tab down and keep the disk in a safe place. You also might consider making a backup copy of the disk using the UTILITY mode ”Backup” function. Finally, clear labeling of disk contents is a simple but effective way to prevent the acci­dental loss of valuable data.
!~~Disk~protect
19
MDF3 M
ODE OVERVIEW
Now that you’ve formatted a floppy disk, you’re ready to start using the MDF3. The overview below summarizes the use of each of the MDF3’s four modes, and shows you how to access the JOB and UTILITY mode functions.
MDR mode (page 23)
This mode lets you receive bulk data from a MIDI device and save it to disk as an MDR data file. In this mode the MDF3 can also transmit the contents of MDR files it creates, as well as bulk data files created by the Yamaha MDF2 and the QX3 in MDR mode.
JOB mode (page 39)
This mode lets you play back SEQ data files repeatedly, or in a programmed order. It also allows you to set the sequence data playback tempo, and to enable or disable the transmis­sion and reception of MIDI sync and system control mes­sages.
20
SEQ mode (page 31)
This mode lets you record sequence data as standard MIDI files. In this mode, the MDF3 can also play back the SEQ data files it creates (You can also play back the MDF2’s SEQ data files), as well as Yamaha ESEQ data files and standard MIDI files created by other devices.
UTILITY mode (page 47)
The UTILITY mode lets you rename, delete, copy, and ap­pend files. It also allows you to format or copy disks, and to check the amount of space remaining on a disk.
Hint:
In the JOB and UTILITY modes, you can use the FILE DATA
keys to select a function, and the START/STOP key to execute the function you’ve selected.
JOB mode functions
UTILITY mode functions
01:~~Repeat~play
02:~~~~Prog~play
03:~Record~tempo
04:~~~~Sync~mode
05:~MIDI~control
This function lets you repeat­edly play back one or more SEQ data files in an endless loop. (page 40)
This function lets you create a program of SEQ data files to be played back in a speci­fied order. (page 41)
This function allows you to change the playback tempo that is recorded for a se­quence data file. (page 43)
This function determines whether the MDF3 runs on its internal clock, or in sync with an external MIDI clock. (page 44)
This function enables or dis­ables the transmission and re­ception of MIDI realtime control messages (i.e., START, CONTINUE, and STOP mes­sages), as well as the trans­mission of MIDI clock sig­nals. (page 45)
01:~~~~~~~Rename
02:~~~~~~~Delete
03:~~~~~~~Append
04:~~~~~~~Backup
05:~~~~~~~Format
06:~~~Disk~info.
This function lets you change the names of MDR or SEQ data files which have been saved to disk. (page 49)
This function lets you delete unneeded MDR or SEQ data files from a disk. (page 51)
This function creates a copy of a file, or appends the data of one file to the end of an­other file. (page 52)
This function lets you copy the entire contents of one disk to another disk. (page
54)
This function is used to for­mat new floppy disks for use by the MDF3. (page 56)
This function displays infor­mation about a disk, includ­ing the amount of disk space that has been used, the amount of available space re­maining, the number of files that have been used, and their respective sizes. (page
57) 21
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