ROLAND DM-20 User Manual
201b
Before using this unit, carefully read the sections entitled: “IMPORTANT
SAFETY INSTRUCTIONS” (p. 2), “USING THE UNIT SAFELY” (pp. 3–4), and
“IMPORTANT NOTES” (p. 6). These sections provide important information
concerning the proper operation of the unit. Additionally, in order to feel
assured that you have gained a good grasp of every feature provided by your
new unit, Owner’s manual should be read in its entirety. The manual should be
saved and kept on hand as a convenient reference.
Owner’s Manual
Bedienungsanleitung
Mode d’emploi
Manuale d’uso
Manual del usuario
202
Copyright © 2004 ROLAND CORPORATION
All rights reserved. No part of this publication may be reproduced in any form without the
written permission of ROLAND CORPORATION.
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
ATTENTION: RISQUE DE CHOC ELECTRIQUE NE PAS OUVRIR
CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK,
DO NOT REMOVE COVER (OR BACK).
NO USER-SERVICEABLE PARTS INSIDE.
REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.
The lightning flash with arrowhead symbol, within an
equilateral triangle, is intended to alert the user to the
presence of uninsulated “dangerous voltage” within the
product’s enclosure that may be of sufficient magnitude to
constitute a risk of electric shock to persons.
The exclamation point within an equilateral triangle is
intended to alert the user to the presence of important
operating and maintenance (servicing) instructions in the
literature accompanying the product.
INSTRUCTIONS PERTAINING TO A RISK OF FIRE, ELECTRIC SHOCK, OR INJURY TO PERSONS.
IMPORTANT SAFETY INSTRUCTIONS
SAVE THESE INSTRUCTIONS
WARNING - When using electric products, basic precautions should always be followed, including the following:
1. Read these instructions.
2. Keep these instructions.
3. Heed all warnings.
4. Follow all instructions.
5. Do not use this apparatus near water.
6. Clean only with a dry cloth.
7. Do not block any of the ventilation openings. Install in
accordance with the manufacturers instructions.
8. Do not install near any heat sources such as radiators,
heat registers, stoves, or other apparatus (including
amplifiers) that produce heat.
9. Do not defeat the safety purpose of the polarized or
grounding-type plug. A polarized plug has two blades with
one wider than the other. A grounding type plug has two
blades and a third grounding prong. The wide blade or the
third prong are provided for your safety. When the provided
plug does not fit into your outlet, consult an electrician for
replacement of the obsolete outlet.
IMPORTANT: THE WIRES IN THIS MAINS LEAD ARE COLOURED IN ACCORDANCE WITH THE FOLLOWING CODE.
BLUE:
BROWN:
As the colours of the wires in the mains lead of this apparatus may not correspond with the coloured markings identifying
the terminals in your plug, proceed as follows:
The wire which is coloured BLUE must be connected to the terminal which is marked with the letter N or coloured BLACK.
The wire which is coloured BROWN must be connected to the terminal which is marked with the letter L or coloured RED.
Under no circumstances must either of the above wires be connected to the earth terminal of a three pin plug.
NEUTRAL
LIVE
10. Protect the power cord from being walked on or pinched
particularly at plugs, convenience receptacles, and the
point where they exit from the apparatus.
11. Only use attachments/accessories specified by the
manufacturer.
12. Never use with a cart, stand, tripod, bracket,
or table except as specified by the
manufacturer, or sold with the apparatus.
When a cart is used, use caution when
moving the cart/apparatus combination to
avoid injury from tip-over.
13. Unplug this apparatus during lightning storms or when
unused for long periods of time.
14. Refer all servicing to qualified service personnel. Servicing
is required when the apparatus has been damaged in any
way, such as power-supply cord or plug is damaged, liquid
has been spilled or objects have fallen into the apparatus,
the apparatus has been exposed to rain or moisture, does
not operate normally, or has been dropped.
For the U.K.
2
USING THE UNIT SAFELY
Used for instructions intended to alert
the user to the risk of death or severe
injury should the unit be used
improperly.
Used for instructions intended to alert
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.
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 modifications 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.
..........................................................................................................
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
• 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.
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.
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.
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 powercord plug must be unplugged from the outlet.
008e
• Use only the attached power-supply cord. Also, the
supplied power cord must not be used with any other
device.
..........................................................................................................
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!
..........................................................................................................
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.
..........................................................................................................
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.
..........................................................................................................
007
• Make sure you always have the unit placed so it is level
and sure to remain stable. Never place it on stands that
could wobble, or on inclined surfaces.
..........................................................................................................
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.
..........................................................................................................
..........................................................................................................
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:
• 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.
..........................................................................................................
3
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.
..........................................................................................................
014
• Protect the unit from strong impact.
(Do not drop it!)
..........................................................................................................
015
• Do not force the unit’s power-supply cord to share an
outlet with an unreasonable number of other devices. Be
especially careful when using extension cords—the total
power used by all devices you have connected to the
extension cord’s outlet must never exceed the power
rating (watts/amperes) for the extension cord. Excessive
loads can cause the insulation on the cord to heat up
and eventually melt through.
..........................................................................................................
016
• Before using the unit in a foreign country, consult with
your retailer, the nearest Roland Service Center, or an
authorized Roland distributor, as listed on the “Information” page.
..........................................................................................................
026
• Do not put anything that contains water (e.g., flower
vases) on this unit. 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.
..........................................................................................................
101a
• The unit should be located so that its location or position
does not interfere with its proper ventilation.
..........................................................................................................
102b
• Always grasp only the plug on the power-supply cord
when plugging into, or unplugging from, an outlet or
this unit.
..........................................................................................................
103a:
• At regular intervals, you should unplug the power plug
and clean it by using a dry cloth to wipe all dust and
other accumulations away from its prongs. Also,
disconnect the power plug from the power outlet
whenever the unit is to remain unused for an extended
period of time. Any accumulation of dust between the
power plug and the power outlet can result in poor
insulation and lead to fire.
..........................................................................................................
104
• Try to prevent cords and cables from becoming
entangled. Also, all cords and cables should be placed so
they are out of the reach of children.
..........................................................................................................
106
• Never climb on top of, nor place heavy objects on the
unit.
..........................................................................................................
107b
• Never handle the power cord or its plugs with wet
hands when plugging into, or unplugging from, an
outlet or this unit.
..........................................................................................................
108a
• Before moving the unit, disconnect the power plug from
the outlet, and pull out all cords from external devices.
..........................................................................................................
109a
• Before cleaning the unit, turn off the power and unplug
the power cord from the outlet.
..........................................................................................................
110a
• Whenever you suspect the possibility of lightning in
your area, pull the plug on the power cord out of the
outlet.
..........................................................................................................
4
IMPORTANT NOTES
291b
In addition to the items listed under “IMPORTANT SAFETY INSTRUCTIONS” and “USING THE UNIT SAFELY” on pages
2–4, please read and observe the following:
Power Supply
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.
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.
308
• Although the LCD and LEDs are switched off when the POWER
switch is switched off, this does not mean that the unit has been
completely disconnected from the source of power. If you need
to turn off the power completely, first turn off the POWER
switch, then unplug the power cord from the power outlet. For
this reason, the outlet into which you choose to connect the
power cord’s plug should be one that is within easy reach.
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 interference.
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 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.
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.
359
• Do not paste stickers, decals, or the like to this instrument.
Peeling such matter off the instrument may damage the exterior
finish.
Add
• Do not allow objects to remain on top of the unit while it is in
operation. Placing heavy objects on this unit may result in injury
if it overturns or falls.
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, 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.
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.
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).
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 information on cable specifications,
contact the manufacturer of the cable.
Add
• Be sure to avoid inserting your fingers in the bass reflex ports
when transporting or moving the speakers, as your fingers may
become wedged and stuck in the ports.
5
Panel Description
Left Channel
fig.2
1 2 3
Left Channel
1.
POWER Switch, POWER Indicator
This turns the power of the left (L) channel on/off. When
the power is on, the indicator located at the side of the
switch will light.
2.
L Channel Input Jack
Connect this to L Channel Output Jack 14 on the rightside unit. For the connection, use the included speaker
cable.
3.
AC Inlet
Connect the included Power cord here (p. 17). Plug it
firmly in, so that the cable does not accidentally become
disconnected.
Right Channel
4.
POWER Switch, POWER Indicator
This turns the power of the right (R) channel on/off.
When the power is on, the indicator located at the side of
the switch will light.
5.
PHONES Jack
When you connect headphones to this jack, no sound
will be heard from the speakers.
6.
BASS Control Knob
7.
TREBLE Control Knob
These adjust the tones of the bass and treble. Set to center
to make the tones flat.
Right Channel
fig.3
4 5 87 9121310 14 1511 1686
8.
VOLUME Knob (DIGITAL/LINE 1)
This adjusts the volume of devices connected to digital
input connectors 10, 16, and LINE 1 Input Jacks 13.
9.
VOLUME Knob (LINE 2)
This adjusts the volume of the device connected to LINE
2 Input Jacks 12.
10.
Digital Input Connector (Optical)
This is the digital input connector for optic-fiber cable.
11.
Digital Input Select Switch
This switch selects digital input connector 10 or 16 on
the rear panel. Select the connector used for the input
signal.
12.
LINE 2 Input Jacks (L (MONO), R) (1/4” phone type)
For mono input, use the L (MONO) jack.
13.
LINE 1 Input Jacks (L, R) (RCA phono type)
14.
L Channel Output Jack
Connect this to L Channel Input Jack 2 on the left-side
unit.
15.
AC Inlet
Connect the included Power cord here (p. 17). Plug it
firmly in, so that the cable does not accidentally become
disconnected.
16.
Digital Input Connector (Coaxial)
This is the digital input connector for coaxial cable.
6
Loading...