Roland C-230 用户手册

 

 

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.

 

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 
(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. 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.

• 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 acciden-
tally.

 

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.

 

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 only the specified expression pedal (EV-7; sold 

separately). By connecting any other expression pedals, you 
risk causing malfunction and/or damage to the unit.

• 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.

 

927

 

• Depending on the circumstances of a particular setup, you 

may experience a discomforting sensation, or perceive that 
the surface feels gritty to the touch when you touch the metal 
portions of other objects, such as guitars. This is due to an 
infinitesimal electrical charge, which is absolutely harmless. 
However, if you are concerned about this, connect the ground 
terminal (see the figure on p. 13) with an external ground. 
When the unit is grounded, a slight hum may occur, 
depending on the particulars of your installation. If you are 
unsure of the connection method, contact the nearest Roland 
Service Center, or an authorized Roland distributor, as listed 
on the “Information” page.

Unsuitable places for connection

• Water pipes (may result in shock or electrocution)
• Gas pipes (may result in fire or explosion)
• Telephone-line ground or lightning rod (may be 

dangerous in the event of lightning)

 

C-230_e.book  Page 6  Tuesday, May 19, 2009  10:22 AM