Yamaha Electone EL-900 Owner's Manual page 88

Yamaha electrone el-900
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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.
About the Floppy Disks
7
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.
88
NOTE:
To protect your data (Write-protect Tab):
To prevent accidental erasure of important data, slide
the diskユs write-protect tab to the メprotectモ position (tab
open). If you attempt to modify the disk when the write-
protect tab is set to メonモ position, メProt (Protected)モ
will appear on the LED display in the M.D.R. section
indicating that the operation is not possible.
Rear side
Shutter
Write-protect tab
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 Disk Copy
function on page 106.
Improved Potentiality of the M.D.R.
Different from the existing models, the M.D.R. of
the EL-900 begins reading all data starting with the
song numbered 1 as soon as you insert a disk into
the floppy disk slot. Thus, inserting a disk causes
to produce a sound (reading sound) indicating that
the M.D.R. is in the reading process.
The improvement of the M.D.R. allows you to start
song playback immediately, to be free from the
reading sound during playback and to record the
song playback using the several song numbers with
the Next Song function.
NOTE:
Ejecting the disk will lose the data loaded from the disk except
for the currently selected and played back song.
NOTE:
The time reading sound is produced is in proportion to the
amount of data recorded in the disk. You can eject the disk
whenever you are not using the M.D.R. and donユt want to be
bothered with the reading sound.
Protect Off
(tab closed: unlocked)
Protect On
(tab open: locked)

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