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Snare Pad Handling

 WARNING

Do not open (or modify in any way) the 

unit or its AC adaptor.

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.
Never install the unit in any of the 

following locations.

•  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

•  Exposed to steam or smoke; or are

•  Subject to salt exposure; or are

•  Humid; or are

•  Exposed to rain; or are

•  Dusty or sandy; or are

•  Subject to high levels of vibration 

and shakiness.

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.

Be sure to use only the AC adaptor 

supplied with the unit. Also, make 

sure the line voltage at the installation 

matches the input voltage specified 

on the AC adaptor’s body. Other AC 

adaptors may use a different polarity, 

or be designed for a different voltage, 

so their use could result in damage, 

malfunction, or electric shock.
Use only the attached power-supply 

cord. Also, the supplied power cord 

must not be used with any other 

device.

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!
This unit, in combination with an ampli-

fier 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.

 WARNING

Do not place containers containing 

liquid on this product. Never allow 

foreign objects (e.g., flammable objects, 

coins, wires) or liquids (e.g., water or 

juice) to enter this product. Doing 

so may cause short circuits, faulty 

operation, or other malfunctions.

Immediately turn the power off, remove 

the AC adaptor 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 AC adaptor, 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.

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.
Protect the unit from strong impact.
(Do not drop it!)

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.
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.

 

CAUTION

The unit and the AC adaptor should 

be located so their location or position 

does not interfere with their proper 

ventilation.

Always grasp only the plug on the AC 

adaptor cord when plugging into, or 

unplugging from, an outlet or this unit.

At regular intervals, you should unplug 

the AC adaptor 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.

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.

Never climb on top of, nor place heavy 

objects on the unit.

Never handle the AC adaptor or its 

plugs with wet hands when plugging 

into, or unplugging from, an outlet or 

this unit.

Before moving the unit, disconnect the 

AC adaptor and all cords coming from 

external devices.

Before cleaning the unit, turn off the 

power and unplug the AC adaptor from 

the outlet.

Whenever you suspect the possibility of 

lightning in your area, disconnect the 

AC adaptor from the outlet.

Be careful so you don’t get your fingers 

pinched when you handle any moving 

parts such as the following. Adult 

supervision is recommended whenever 

small children use the unit.

•  Pedal (Owner’s Manual p. 8)

To prevent accidental ingestion of the 

parts listed below, always keep them 

out of the reach of small children.

•  Included Parts 

thumb screws 

screws for foot pipe 

cable tie

•  Removable Parts 

screws 

washers 

hex nuts 

knobs 

cymbal knobs 

cymbal felts 

rubber bushings 

Snare tuning bolts 

cable hooks 

Adjusters

Important Notes

 

Detaching or Attaching Pads or the Pedal Unit

Read this if you need to detach only a pad, such as when servicing is 
required.

*  A detached pad must not be attached to another product or used with 

another product. Be careful so as not to lose any of the parts you've 
removed.

Detaching the Snare Pad

1. 

Loosen the screw using the drum key.

2. 

Pull out the entire snare pad assembly, including arm pipe, from 
the stand.

arm pipe

*  Do not remove the arm pipe from the snare pad.

Detaching a Tom Pad

1. 

Unplug the tom and cymbal cables.

2. 

Use a drum key to remove bolt securing the cymbal rod from the 
pipe.

cymbal rod

3. 

Remove the plastic end-cap from the pipe.

*  Do not insert your finger into the pipe while the cap is removed.

end-cap

end-cap

4. 

Use a drum key to loosen the bolt securing the pad to the pipe.

5. 

Remove the tom pad from the pipe.

When removing a tom pad from the pipe, be very careful when 
disconnecting and pulling the cable through the pad mount bracket.

Mounting a Tom Pad

This is basically a reverse operation of the detaching process. But when re-
fitting the pads to the pipes, be careful to align the grooves in the pipe 
with the triangular protrusions of the pad. The pads can be fitted to three 
pitch(angle) positions.

Tom 1, Tom 2

Tom 3

Detaching the Pedal Unit

To detach the pedal unit, reverse the procedure described in "

02 Attach 

the Foot Pipes

" (other side).

Power Supply

•  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.

•  The AC adaptor will begin to generate heat 

after long hours of consecutive use. This is 
normal, and is not a cause for concern.

•  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.

•  With the factory settings, the HD-3’s power 

will automatically be switched off 30 minutes 
after you stop playing or operating the 
unit. If you don’t want the power to turn off 
automatically, change the “AUTO OFF” setting 
to “OFF” as described on p. 15 of the Owner’s 
Manual. 
(Note) 
The settings you were editing will be lost 
when the power is turned off. If you want 
to keep your settings, you must save your 
settings before turning the power off.

Placement

•  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. 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.

•  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 happen-
ing. If you do so, please make sure that the 
unit will not slip or move accidentally.

•  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.

•  If you will be using the HD-3 in the same loca-

tion for an extended period, we recommend 
that you use an optional drum mat (TDM-1) 
to prevent the adjuster from discoloration to 
the surface

•  When setting up or storing the HD-3, be 

careful so the fingers used to grasp the stand 
don’t get pinched. Also, take care that the 
stand does not become unbalanced and fall 
over or fall against you.

•  When moving the HD-3, check the following 

points first, then be sure to keep the system 
in the horizontal position while lifting and 
carrying it. Take care not to pinch your hand, 
or drop the system on your feet. 

•  Check that the knobs and screws that 

fasten the pads, arm pipes, and foot 

pipes have not become loose. If any are 

loose, tighten them securely.

•  Disconnect the AC adaptor.
•  Disconnect external devices.

Maintenance

•  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.

•  The rubber portion of the striking surface is 

treated with a preservative to maintain its 
performance. With the passage of time, this 
preservative may appear on the surface as 
a white stain, or reveal how the pads were 
struck during product testing. This does not 
affect the performance or functionality of the 
product, and you may continue using it with 
confidence.

Repairs and Data

•  Please be aware that all data contained in the 

unit’s memory may be lost when the unit is 
sent for repairs. Important data should always 
be 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.

Additional Precautions

•  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.

•  Never strike or apply strong pressure to the 

display.

•  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.

•  This instrument is designed to minimize 

the extraneous sounds produced when it’s 
played. However, since sound vibrations can 
be transmitted through floors and walls to 
a greater degree than expected, take care 
not to allow these sounds to become a 
nuisance to neighbors, especially when using 
headphones.

•  When you need to transport the unit, pack-

age 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.

•  Due to the structure of this product, it is 

possible for pets or other small animals to 
enter the openings of the pedals. If this 
should occur, immediately turn off the power, 
disconnect the AC adaptor from the outlet, 
and consult your dealer or a Roland service 
center

•  When you operate the pedals, please be 

careful not to get your fingers pinched 
between the movable part and the panel. 
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.

•  Synthetic rubber is used in the pads and 

cymbals. If you are bothered by the smell of 
rubber, please ventilate the room. Do not 
place this product near heating equipment.

Using the Unit Safely

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. 

Used for instructions intended to alert 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. 

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. 

About       WARNING and       CAUTION Notices

About the Symbols

ALWAYS OBSERVE THE FOLLOWING

Component Names

Head sensor

Rim rubber

Head

Tuning bolts

Knob

Suitable position
for rim shots

Player

Adjusting the Tension

From behind, use the drum key to evenly tighten the tuning bolts a little at a time 
in the order shown in the illustration.

1

3

5

6

4

2

NOTE

*  Be sure to adjust the head tension before use.
*  Striking the head when the head tension is loose may damage the sensor and head.
*  Do not apply excessive force to the sensor and cushion located under the head. 

Doing so can interfere with accurate detection, and may damage it.

*  Due to the nature of the materials used in the sensor, changes in room temperature may affect the sensitivity of the 

sensor.

*  The head and the rim rubber are expendable items that eventually will wear out and need to be replaced. Replace the 

head when the following occurs: 
Slack portions remain in the head even when the head tension is properly adjusted. 
Rim shots may not be performed correctly when the rim rubber is worn out. If this occurs, replace the rim rubber. Consult 
Roland Service for more on replacing the rim rubber.

•  The copyright of content in this product 

(the sound waveform data, style data, 
accompaniment patterns, phrase data, 
audio loops and image data) is reserved by 
Roland Corporation and/or Atelier Vision 
Corporation.

•  Purchasers of this product are permitted 

to utilize said content for the creating, 
performing, recording and distributing 
original musical works.

•  Purchasers of this product are NOT permitted 

to extract said content in original or modified 
form, for the purpose of distributing recorded 
medium of said content or making them 
available on a computer network.

•  MMP (Moore Microprocessor Portfolio) 

refers to a patent portfolio concerned with 
microprocessor architecture, which was 
developed by Technology Properties Limited 
(TPL). Roland has licensed this technology 
from the TPL Group.

•  Company names and product names 

appearing in this document are registered 
trademarks or trademarks of their respective 
owners.

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