Yamaha PSR-550

• Do not use the instrument near other electrical products such as televisions,

radios, or speakers, since this might cause interference which can affect proper

operation of the other products.

• Do not place the instrument in an unstable position where it might accidentally

fall over.

• Before moving the instrument, remove all connected adaptor and other cables.

• When cleaning the instrument, use a soft, dry cloth. Do not use paint thinners,

solvents, cleaning fluids, or chemical-impregnated wiping cloths. Also, do not

place vinyl, plastic or rubber objects on the instrument, since this might discolor

the panel or keyboard.

• Do not rest your weight on, or place heavy objects on the instrument, and do

not use excessive force on the buttons, switches or connectors.

• Use only the stand specified for the instrument. When attaching the stand or

rack, use the provided screws only. Failure to do so could cause damage to the

internal components or result in the instrument falling over.

• Do not operate the instrument for a long period of time at a high or uncomfortable

volume level, since this can cause permanent hearing loss. If you experience

any hearing loss or ringing in the ears, consult a physician.

■DATA BACK-UP AND STORAGE

• Yamaha recommends that you regularly save data using a floppy disk in a safe,

cool, dry place. YAMAHA CANNOT BE HELD RESPONSIBLE FOR THE

ACCIDENTAL LOSS OF IMPORTANT MUSIC DATA! Regarding the data you

have created, as long as fresh batteries are inserted in (or an AC power adaptor

is connected to) the instrument, the data will be retained, even when the power

is turned off. It will also be retained long enough to exchange an old set of

batteries for a new set. If you have important data in the instrument which you

don’t want to lose, please take care to keep fresh batteries inserted in (or keep

an AC power adaptor connected to) the instrument, and to regularly save data.

Yamaha cannot be held responsible for damage caused by improper use or

modifications to the instrument, or data that is lost or destroyed.

Always turn the power off when the instrument is not in use.

Make sure to discard used batteries according to local regulations.

PRECAUTIONS

PLEASE READ CAREFULLY BEFORE PROCEEDING

* Please keep these precautions in a safe place for future reference.

• Do not open the instrument or attempt to disassemble the internal parts or

modify them in any way. The instrument contains no user-serviceable parts. If

it should appear to be malfunctioning, discontinue use immediately and have it

inspected by qualified Yamaha service personnel.

• Do not expose the instrument to rain, use it near water or in damp or wet

conditions, or place containers on it containing liquids which might spill into

any openings.

• If the AC adaptor cord or plug becomes frayed or damaged, or if there is a

sudden loss of sound during use of the instrument, or if any unusual smells or

smoke should appear to be caused by it, immediately turn off the power switch,

disconnect the adaptor plug from the outlet, and have the instrument inspected

by qualified Yamaha service personnel.

• Use the specified adaptor (PA-6 or an equivalent recommended by Yamaha)

only. Using the wrong adaptor can result in damage to the instrument or

overheating.

• Before cleaning the instrument, always remove the electric plug from the outlet.

Never insert or remove an electric plug with wet hands.

• Check the electric plug periodically and remove any dirt or dust which may

have accumulated on it.

CAUTION

Always follow the basic precautions listed below to avoid the possibility of physical injury to you or others, or damage to the

instrument or other property. These precautions include, but are not limited to, the following:

• Do not place the AC adaptor cord near heat sources such as heaters or radiators,

and do not excessively bend or otherwise damage the cord, place heavy objects

on it, or place it in a position where anyone could walk on, trip over, or roll

anything over it.

• When removing the electric plug from the instrument or an outlet, always hold

the plug itself and not the cord.

• Do not connect the instrument to an electrical outlet using a multiple-connector.

Doing so can result in lower sound quality, or possibly cause overheating in

the outlet.

• Unplug the AC power adaptor when not using the instrument, or during electrical

storms.

• Always make sure all batteries are inserted in conformity with the +/- polarity

markings. Failure to do so might result in overheating, fire, or battery fluid

leakage.

• Always replace all batteries at the same time. Do not use new batteries together

with old ones. Also, do not mix battery types, such as alkaline batteries with

manganese batteries, or batteries from different makers, or different types of

batteries from the same maker, since this can cause overheating, fire, or battery

fluid leakage.

• Do not dispose of batteries in fire.

• Do not attempt to recharge batteries that are not intended to be charged.

• When the batteries run out, or if the instrument is not to be used for a long time,

remove the batteries from the instrument to prevent possible leakage of the

battery fluid.

• Keep batteries away from children.

• If the batteries do leak, avoid contact with the leaked fluid. If the battery fluid

should come in contact with your eyes, mouth, or skin, wash immediately with

water and consult a doctor. Battery fluid is corrosive and may possibly cause

loss of sight or chemical burns.

• Before connecting the instrument to other electronic components, turn off the

power for all components. Before turning the power on or off for all components,

set all volume levels to minimum. Also, be sure to set the volumes of all

components at their minimum levels and gradually raise the volume controls

while playing the instrument to set the desired listening level.

• Do not expose the instrument to excessive dust or vibrations, or extreme cold

or heat (such as in direct sunlight, near a heater, or in a car during the day) to

prevent the possibility of panel disfiguration or damage to the internal

components.

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WARNING

Always follow the basic precautions listed below to avoid the possibility of serious injury or even death from electrical shock,

short-circuiting, damages, fire or other hazards. These precautions include, but are not limited to, the following: