Roland MP-70 用户手册

 

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 and readily 
accessible.

 

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 temper-

ature and/or humidity is very different, water droplets (conden-
sation) 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. 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.

 

403

 

• The pedals of this unit are made of brass.

Brass eventually darkens as the result of the natural oxidization 
process. If the brass becomes tarnished, polish it using commer-
cially available metal polisher.

 

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.

 

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.

 

557

 

• A small amount of heat will radiate from the unit during normal 

operation.

 

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).

 

559b

 

• When you need to transport the unit, pack it in shock-absorbent 

material. Transporting the unit without doing so can cause it to 
become scratched or damaged, and could lead to malfunction.

 

560

 

• Do not apply undue force to the music stand 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 precau-
tions.

• 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 information on cable specifications, 
contact the manufacturer 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 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 nearest 
Roland Service Center.

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