Roland DP-900 Manuale Utente

 

291a

 

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.

 

302

 

• The AC adaptor will begin to generate heat after long hours of 

consecutive use. This is normal, and is not a cause for concern.

 

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.

 

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 interference.

 

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 initiating 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.

 

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.

 

552

 

• Unfortunately, it may be impossible to restore the contents 

of data that was stored in the unit’s memory 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.

 

555

 

• A small amount of noise may be heard from the display 

during normal operation.

 

556

 

•

 

When connecting / disconnecting all cables, grasp the connector 
itself—never pull on the cable. This way you will avoid causing 
shorts, or damage to the cable’s internal elements.

 

558a

 

• To avoid disturbing your neighbors, try to keep the unit’s 

volume at reasonable levels. You may prefer to use 
headphones, so you do not need to be concerned about 
those around you (especially when it is late at night).

 

559a

 

• When you need to transport the unit, package it in the box 

(including padding) that it came in, if possible. Otherwise, 
you will need to use equivalent packaging materials.

 

560

 

• Do not apply undue force to the music rest while it is in use.

 

562

 

• Use a cable from Roland to make the connection. If using 

some other make of connection cable, please note the 
following precautions.

• Some connection cables contain resistors. Do not use 

cables that incorporate resistors for connecting to this 
unit. The use of such cables can cause the sound level to 
be extremely low, or impossible to hear. For infor-
mation on cable specifications, contact the manufac-
turer of the cable.

 

565

 

• 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 encoun-
tered, 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 nearest Roland Service Center.

DP-900_e.book 4 ページ ２００４年１１月２９日　月曜日　午後１２時５８分