Roland AC-33 Benutzerhandbuch

•  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 malfunc-

tion 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.

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

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

•  When installing or replacing batteries, always turn off the power on 

this unit and disconnect any other devices you may have connected. 

This way, you can prevent malfunction and/or damage to speakers or 

other devices.

•  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.

•  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.

•  This device may interfere with radio and television reception. Do not 

use this device in the vicinity of such receivers.

•  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.

•  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.

•  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.

•  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.

•  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 accidentally.

•  For everyday cleaning wipe the unit with a soft, dry cloth or one that 

has been slightly dampened with water. To remove stubborn dirt, use a 

cloth impregnated with a mild, non-abrasive detergent. Afterwards, be 

sure to wipe the unit thoroughly with a soft, dry cloth.

•  Never use benzine, thinners, alcohol or solvents of any kind, to avoid 

the possibility of discoloration and/or deformation.

•  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.

•  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.

•  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).

•  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.

•  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.

•  Recording, duplication, distribution, sale, lease, performance, or broad-

cast of copyrighted material (musical works, visual works, broadcasts, 

live performances, etc.) belonging to a third party in part or in whole 

without the permission of the copyright owner is forbidden by law.

•  Do not use this unit for purposes that could infringe on a copyright 

held by a third party. We assume no responsibility whatsoever with 

regard to any infringements of third-party copyrights arising through 

your use of this unit.

IMPORTANT NOTES