Roland AT20s Manuale Utente

 

291b

 

301

 

• Do not connect this unit to same electrical outlet that is 

being used by an electrical appliance that is controlled by 
an inverter (such as a refrigerator, washing machine, 
microwave oven, or air conditioner), or that contains a 
motor. Depending on the way in which the electrical 
appliance is used, power supply noise may cause this unit 
to malfunction or may produce audible noise. If it is not 
practical to use a separate electrical outlet, connect a 
power supply noise filter between this unit and the 
electrical outlet.

 

307

 

• Before connecting this unit to other devices, turn off the 

power to all units. This will help prevent malfunctions 
and/or damage to speakers or other devices.

 

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.

 

351

 

• Using the unit near power amplifiers (or other equipment 

containing large power transformers) may induce hum. 
To alleviate the problem, change the orientation of this 
unit; or move it farther away from the source of inter-
ference.

 

352a

 

• This device may interfere with radio and television 

reception. Do not use this device in the vicinity of such 
receivers.

 

352b

 

• Noise may be produced if wireless communications 

devices, such as cell phones, are operated in the vicinity of 
this unit. Such noise could occur when receiving or initi-
ating a call, or while conversing. Should you experience 
such problems, you should relocate such wireless devices 
so they are at a greater distance from this unit, or switch 
them off.

 

353

 

• Observe the following when using the unit’s floppy disk 

drive. For further details, refer to “Before Using Floppy 
Disks” (p. 6).

• Do not place the unit near devices that produce a 

strong magnetic field (e.g., loudspeakers).

• Install the unit on a solid, level surface.
• Do not move the unit or subject it to vibration while 

the drive is operating.

 

354b

 

• Do not expose the unit to direct sunlight, place it near 

devices that radiate heat, leave it inside an enclosed 
vehicle, or otherwise subject it to temperature extremes. 
Also, do not allow lighting devices that normally are used 
while their light source is very close to the unit (such as a 
piano light), or powerful spotlights to shine upon the 
same area of the unit for extended periods of time. 
Excessive heat can deform or discolor the unit.

 

355b

 

• When moved from one location to another where the 

temperature and/or humidity is very different, water 
droplets (condensation) may form inside the unit. Damage 
or malfunction may result if you attempt to use the unit in 
this condition. Therefore, before using the unit, you must 
allow it to stand for several hours, until the condensation 
has completely evaporated.

 

356

 

• Do not allow rubber, vinyl, or similar materials to remain 

on the unit for long periods of time. Such objects can 
discolor or otherwise harmfully affect the finish.

 

358

 

• Do not allow objects to remain on top of the keyboard or 

pedal board. This can be the cause of malfunction, such as 
keys ceasing to produce sound.

 

359

 

• Do not paste stickers, decals, or the like to this instrument. 

Peeling such matter off the instrument may damage the 
exterior finish.

 

401b

 

• To clean the unit, use a dry, soft cloth; or one that is 

slightly dampened. Try to wipe the entire surface using an 
equal amount of strength, moving the cloth along with the 
grain of the wood. Rubbing too hard in the same area can 
damage the finish.

 

402

 

• Never use benzine, thinners, alcohol or solvents of any 

kind, to avoid the possibility of discoloration and/or 
deformation.

 

452

 

• Please be aware that all data contained in the unit’s 

memory may be lost when the unit is sent for repairs. 
Important data should always be backed up on a floppy 
disk, or written down on paper (when possible). During 
repairs, due care is taken to avoid the loss of data. 
However, in certain cases (such as when circuitry related 
to memory itself is out of order), we regret that it may not 
be possible to restore the data, and Roland assumes no 
liability concerning such loss of data.

 

551

 

• Please be aware that the contents of memory can be 

irretrievably lost as a result of a malfunction, or the 
improper operation of the unit. To protect yourself against 
the risk of losing important data, we recommend that you 
periodically save a backup copy of important data you 
have stored in the unit’s memory on a floppy disk.

 

552

 

• Unfortunately, it may be impossible to restore the contents 

of data that was stored in the unit’s memory and a floppy 
disk once it has been lost. Roland Corporation assumes no 
liability concerning such loss of data.

 

553

 

• Use a reasonable amount of care when using the unit’s 

buttons, sliders, or other controls; and when using its jacks 
and connectors. Rough handling can lead to malfunctions.

 

554

 

• Never strike or apply strong pressure to the display.

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