Roland VGA-7 Musical Instrument Amplifier User Manual


 
8
IMPORTANT NOTES
291b
In addition to the items listed under IMPORTANT SAFETY INSTRUCTIONS and USING THE UNIT SAFELY on pages 2
and 34, please read and observe the following:
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
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 inter-
ference.
352
This device may interfere with radio and television
reception. Do not use this device in the vicinity of such
receivers.
354a
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.
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.
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-dissipation fins, 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.
Maintenance
401a
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.
402
Never use benzine, thinners, alcohol or solvents of any
kind, to avoid the possibility of discoloration and/or
deformation.
Repairs and Data
452
Please be aware that all data contained in the units
memory may be lost when the unit is sent for repairs.
Important data should always be backed up in another
MIDI device (e.g., a sequencer), or written down on paper
(when possible). During repairs, due care is taken to avoid
the loss of data. However, in certain cases (such as when
circuitry related to memory itself is out of order), we
regret that it may not be possible to restore the data, and
Roland assumes no liability concerning such loss of data.
Memory Backup
501b
This unit contains a battery which powers the units
memory circuits while the main power is off. When this
battery becomes weak, the message shown below will
appear in the display. Once you see this message, have the
battery replaced with a fresh one as soon as possible to
avoid the loss of all data in memory. To have the battery
replaced, consult with your retailer, the nearest Roland
Service Center, or an authorized Roland distributor, as
listed on the Information page.
Additional Precautions
551
Please be aware that the contents of memory can be
irretrievably lost as a result of a malfunction, or the
improper operation of the unit. To protect yourself against
the risk of loosing important data, we recommend that
you periodically save a backup copy of important data
you have stored in the units memory in another MIDI
device (e.g., a sequencer).
552
Unfortunately, it may be impossible to restore the
contents of data that was stored in the units memory
once it has been lost. Roland Corporation assumes no
liability concerning such loss of data.