Roland ac-90 Owner's Manual
3
USING THE UNIT SAFELY
001
• Before using this unit, make sure to read the
instructions below, and the Owner’s Manual.
..........................................................................................................
002a
• Do not open or perform any internal modifica-
tions on the unit.
..........................................................................................................
003
• Do not attempt to repair the unit, or replace parts
within it (except when this manual provides
specific instructions directing you to do so). Refer
all servicing to your retailer, the nearest Roland Service
Center, or an authorized Roland distributor, as listed on
the “Information” page.
specific instructions directing you to do so). Refer
all servicing to your retailer, the nearest Roland Service
Center, or an authorized Roland distributor, as listed on
the “Information” page.
..........................................................................................................
004
• Never use or store the unit in places that are:
• Subject to temperature extremes (e.g., direct
sunlight in an enclosed vehicle, near a heating
duct, on top of heat-generating equipment); or
are
duct, on top of heat-generating equipment); or
are
• Damp (e.g., baths, washrooms, on wet floors); or are
• Humid; or are
• Exposed to rain; or are
• Dusty; or are
• Subject to high levels of vibration.
..........................................................................................................
008a
• The unit should be connected to a power supply
only of the type described in the operating
instructions, or as marked on the rear side of unit.
instructions, or as marked on the rear side of unit.
..........................................................................................................
009
• Do not excessively twist or bend the power cord,
nor place heavy objects on it. Doing so can
damage the cord, producing severed elements
and short circuits. Damaged cords are fire and shock
hazards!
damage the cord, producing severed elements
and short circuits. Damaged cords are fire and shock
hazards!
..........................................................................................................
010
• This unit, either alone or in combination with an
amplifier and headphones or speakers, may be
capable of producing sound levels that could
cause permanent hearing loss. Do not operate for
a long period of time at a high volume level, or at
a level that is uncomfortable. If you experience
any hearing loss or ringing in the ears, you should
immediately stop using the unit, and consult an
audiologist.
capable of producing sound levels that could
cause permanent hearing loss. Do not operate for
a long period of time at a high volume level, or at
a level that is uncomfortable. If you experience
any hearing loss or ringing in the ears, you should
immediately stop using the unit, and consult an
audiologist.
...........................................................................................................
011
• Do not allow any objects (e.g., flammable material,
coins, pins); or liquids of any kind (water, soft
drinks, etc.) to penetrate the unit.
drinks, etc.) to penetrate the unit.
...........................................................................................................
012a
• Immediately turn the power off, remove the
power cord from the outlet, and request servicing
by your retailer, the nearest Roland Service
Center, or an authorized Roland distributor, as listed on
the “Information” page when:
by your retailer, the nearest Roland Service
Center, or an authorized Roland distributor, as listed on
the “Information” page when:
• The power-supply cord or the plug has been damaged;
or
• If smoke or unusual odor occurs
• Objects have fallen into, or liquid has been spilled onto
the unit; or
• The unit has been exposed to rain (or otherwise has
become wet); or
• The unit does not appear to operate normally or
exhibits a marked change in performance.
...........................................................................................................
013
• In households with small children, an adult
should provide supervision until the child is
capable of following all the rules essential for the
safe operation of the unit.
capable of following all the rules essential for the
safe operation of the unit.
...........................................................................................................
014
• Protect the unit from strong impact.
(Do not drop it!)
...........................................................................................................
Used for instructions intended to alert
the user to the risk of injury or material
damage should the unit be used
improperly.
the user to the risk of injury or material
damage should the unit be used
improperly.
* Material damage refers to damage or
other adverse effects caused with
respect to the home and all its
furnishings, as well to domestic
animals or pets.
respect to the home and all its
furnishings, as well to domestic
animals or pets.
Used for instructions intended to alert
the user to the risk of death or severe
injury should the unit be used
improperly.
the user to the risk of death or severe
injury should the unit be used
improperly.
The
●
symbol alerts the user to things that must be
carried out. The specific thing that must be done is
indicated by the design contained within the circle. In
the case of the symbol at left, it means that the power-
cord plug must be unplugged from the outlet.
indicated by the design contained within the circle. In
the case of the symbol at left, it means that the power-
cord plug must be unplugged from the outlet.
The symbol alerts the user to important instructions
or warnings.The specific meaning of the symbol is
determined by the design contained within the
triangle. In the case of the symbol at left, it is used for
general cautions, warnings, or alerts to danger.
or warnings.The specific meaning of the symbol is
determined by the design contained within the
triangle. In the case of the symbol at left, it is used for
general cautions, warnings, or alerts to danger.
The symbol alerts the user to items that must never
be carried out (are forbidden). The specific thing that
must not be done is indicated by the design contained
within the circle. In the case of the symbol at left, it
means that the unit must never be disassembled.
be carried out (are forbidden). The specific thing that
must not be done is indicated by the design contained
within the circle. In the case of the symbol at left, it
means that the unit must never be disassembled.
AC-90_egfispd.book Page 3 Tuesday, August 14, 2007 10:09 AM