Yamaha V50, Уполномоченное руководство по продукции

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PRECAUTIONS
The V50 is a precision electronic instrument. To ensure long and trouble-free use,
please read the following precautions.
Location
Avoid placing the V50 in direct sunlight, or in locations
where it will be subjected to temperature extremes,
moisture, excessive dust, or heavy vibration.
Handling
Avoid applying excessive force to the switches,
dropping or rough handling of the unit. While the
circuitry is of reliable integrated circuit design, the V50
should be treated with care.
Power cable
Always grip the plug directly when removing it from
an AC outlet. Removing the plug from the AC outlet
by pulling the cable can result in damage to the cable,
and possibly a short circuit. It is also a good idea to
disconnect the V50 from the AC outlet if you don’t
plan to use it for an extended period of time.
Turning the power on
If one or more devices are connected to the V50 via
MIDI cable, turn on the power switches starting with
the transmitting devices (keyboards, sequencers, etc.)
Connections
To avoid damage to speakers, make all audio con-
nections with the power of the V50 and other units
turned off.
MIDI cables
Use cables specifically intended for MIDI. Using MIDI
cables longer than 15 meters (45 feet) can result in data
errors.
Cleaning
Use only a mild detergent on a cloth, and dry with a
soft cloth. Never use solvents (such as benzine or
thinner) since they can melt or discolor the finish.
Electrical storms (lightning)
Computer circuitry, including that in the V50, is sen-
sitive to voltage spikes. For this reason, the V50 should
be turned off and unplugged from the AC receptacle
in the event of an electrical storm. This precaution
will minimize the chance that a high voltage spike
caused by lightning will damage the unit.
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Electromagnetic fields
Computer circuitry is also sensitive to electromagnetic
radiation. Television sets, radio receivers, transmitters
and transceivers, and wireless microphone or intercom
systems are all potential sources of such radiation. The
V50 should not be placed too close to such devices.
Backup battery
The V50 has a backup battery that allows it to retain
its voice and performance data even when discon-
nected from the AC outlet. The life of this battery is
approximately 5 years. When the backup battery runs
low, the first line of the LCD will show "Change int
battery!". When the backup battery runs completely
out, the voice and performance data will be lost, so
immediately save the data to an optional RAM card
or to disk. Contact the dealer where you purchased
your V50 or a Yamaha service center to have the
battery replaced. When the battery is replaced, the
voice and performance data will be lost, so be sure to
store the data to RAM card or disk.
Floppy disk drive
When moving the V50, be sure to insert the included
dummy disk or an ordinary floppy disk (only if the data
is not essential) into the disk drive to protect the floppy
disk drive heads.
Floppy disks
Use 3.5” 2DD (double sided double density) disks.
NEVER remove the disk while the drive is accessing
the disk (when the disk LED is on). Do not leave disks
where there is a strong magnetic field (near speakers
or video monitors), or in direct sunlight. Do not bend
or put pressure on disks. Do not open the disk shutter
and touch the disk surface. We recommend that you
copy (backup) important data on one or more disks.