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Important Notes
Power Supply
301
• Do not connect this device to the same electrical outlet as an
inverter-controlled device such as a refrigerator, microwave
oven, or air conditioner, or a device that contains an electric
motor. Depending on how the other device is used, power
supply noise could cause this device to malfunction or produce
noise. If it is not practical to use a separate electrical outlet,
please connect this device via a power supply noise filter.
306b
• Batteries are included with this device. These batteries are for
the purpose of testing the operation of this device, and their life
span may be shorter than normal.
307
• Before you make connections, you must switch off the power on
all devices to prevent malfunction and/or speaker damage.
308
• Although the LCD and LEDs are switched off when the Power
switch is switched off, this does not mean that the unit has been
completely disconnected from the source of power. If you need to
turn off the power completely, first turn off the Power switch, then
unplug the power cord from the power outlet. For this reason, the
outlet into which you choose to connect the power cord’s plug
should be one that is within easy reach and readily accessible.
Location
351
• If this device is placed near devices that contain large
transformers, such as power amps, hum may be induced in this
device. If this occurs, move this device farther away or change
its orientation.
352a
• If this device is operated near a television or radio, color distortion
may be seen in the television screen or noise may be heard from
the radio. If this occurs, move this device farther away.
352b
• Keep your cell phone powered off or at a sufficient distance
from this device. If a cell phone is nearby, noise may be heard
when a call is received or initiated, or during conversation.
354b
• Do not leave this device in direct sunlight, near devices that
produce heat, or in a closed-up automobile. Do not allow
illumination devices operated in close proximity (such as a
piano light) or powerful spotlights to shine on the same location
on this device for an extended time. This can cause
deformation or color change.
355b
• If you move this device between locations of radically different
temperature or humidity, water droplets (condensation) may
form inside the device. Using the device in this condition will
cause malfunctions, so please allow several hours for the
condensation to disappear before you use the device.
356
• Do not allow items made of rubber or vinyl to remain on top of
this device for an extended time. This can cause deformation or
color change.
358
• Do not leave objects on top of the keyboard. This can cause
malfunctions such as failure to sound.
359
• Do not affix adhesive labels to this device. The exterior finish
may be damaged when you remove the labels.
360
• (AT-900C)
Depending on the material and temperature of the surface on
which you place the unit, its rubber feet may discolor or mar
the surface.You can place a piece of felt or cloth under the
rubber feet to prevent this from happening. If you do so, please
make sure that the unit will not slip or move accidentally.
Care
401b
• For everyday care, wipe with a soft dry cloth, or remove
stubborn dirt using a tightly wrung-out cloth. If this device
contains wooden components, wipe the entire area following
the direction of the grain. The finish may be damaged if you
continue strongly rubbing a single location.
Addition
• If water droplets should adhere to this device, immediately
wipe them off using a soft dry cloth.
402
• Do not use solvents such as benzene, thinner, or alcohol, since
these can cause deformation or color change.
Servicing
452
• If you return this device for servicing, the contents of memory
may be lost. Please store important contents on USB memory,
or make a note of the contents. We take utmost care to
preserve the contents of memory when performing service, but
there may be cases when the stored content cannot be
recovered because the memory section has malfunctioned.
Please be aware that we cannot accept responsibility for the
recovery of lost memory content or for any consequences of
such loss.
Other Cautions
551
• Stored content may be lost due to a malfunction of the device
or because of inadvertent operation. You should back up
important content on USB memory as a safeguard against such
loss.
552
• We cannot accept responsibility for the recovery of any content
lost from internal memory or USB memory, or for the
consequences of such loss.
553
• Do not apply excessive force to the buttons, knobs, or input/
output jacks, since this may cause malfunctions.
554
• Never strike or apply strong pressure to the display.
556
• When connecting or disconnecting cables, grasp the plug (not
the cable) to prevent short circuits or broken connections.
557
• This device may produce a certain amount of heat, but this is
not a malfunction.
558a
• Please enjoy your music in ways that do not inconvenience
other people nearby, and pay particular attention to the volume
at nighttime. Using headphones will allow you to enjoy music
without having to be concerned about others.
559b
• When transporting or shipping this device, package it in an
appropriate amount of cushioning material. Scratches,
damage, or malfunctions may occur if you transport it without
appropriate packaging.
560
• If using the music rest, do not apply excessive force to it.
562
• Some connection cables contain a resistor. Do not connect such
cables to this device. Doing so may make the volume extremely
low or inaudible. Please use connection cables not containing
a resistor.
565
• (For AT-900)
Before opening or closing the keyboard lid, always make sure
that no pets or other small animals are located on top of the
instrument (in particular, they should be kept away from the
keyboard and its lid). Otherwise, due to the structural design of
this instrument, small pets or other animals could end up getting
trapped inside it. If such a situation is encountered, you must
immediately switch off the power and disconnect the power
cord from the outlet. You should then consult with the retailer
from whom the instrument was purchased, or contact the
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