Roland DS-50A 用户手册

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页码 12
 
5
 
IMPORTANT NOTES
 
Power Supply
 
301
 
• Do not use this unit on the same power circuit with any 
device that will generate line noise (such as an electric 
motor or variable lighting system).
 
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.
 
Placement
 
352
 
• This device may interfere with radio and television 
reception. Do not use this device in the vicinity of such 
receivers.
 
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.
 
355
 
• To avoid possible breakdown, do not use the unit in a wet 
area, such as an area exposed to rain or other moisture.
 
356
 
• Do not allow rubber, vinyl, or similar materials to remain 
on the piano for long periods of time. Such objects can 
discolor or otherwise harmfully affect the finish.
 
357
 
• Do not put anything that contains water (e.g., flower 
vases) on the piano. Also, avoid the use of insecticides, 
perfumes, alcohol, nail polish, spray cans, etc., near the 
unit. Swiftly wipe away any liquid that spills on the unit 
using a dry, soft cloth.
 
359
 
• Do not paste stickers, decals, or the like to this instrument. 
Peeling such matter off the instrument may damage the 
exterior finish.
• During Operation, this device must be placed at a distance 
of no less than 50 cm from any walls.
• Do not allow objects to remain on top of the unit while it is 
in operation.
• If you cover the heat sink, their function is defeated, 
and their temperature can rise to overly high levels, 
which could cause burns if they are accidentally 
touched.
• Placing heavy objects on this unit may result in injury if 
it overturns or falls.
 
Please also refer to “Important Notes on Placement”
 (p. 8).
 
Maintenance
 
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. 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.
 
Additional Precautions
 
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.
 
558b
 
• To avoid disturbing your neighbors, try to keep the unit’s 
volume at reasonable levels (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.
 
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.
 
In addition to the items listed under “IMPORTANT SAFETY INSTRUCTIONS” and “USING THE UNIT SAFELY” on pages 2 
and 3, please read and observe the following: