Yamaha YOB-241 Benutzerhandbuch - Seite 9

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Troubleshooting

The tone is not clear or the instrument

plays out of tune.

◆

If pads are deformed or the body is crack-

ing, take the instrument to your dealer for

repair.

→ Never apply excessive force to the keys.

When you ﬁnish playing the instrument,

wipe any moisture or dirt from the pads.

→ Drastic changes in temperature or

humidity can cause cracking. Do not

expose the instrument to hot air (i.e., as

from a heater) or cold air (i.e., as from

an air-conditioner). Never try to warm

up the inside of the instrument's body

using your breath.

The keys are stiff. The keys do not move.

◆

A spring may have been dislodged or the

keys may be deformed.

→ If a spring has been dislodged, returning

it to its proper position will correct the

problem. Be careful not to bend the

spring.

Note that a spring might have been

caught by a cleaning cloth and dislodged

when you wiped down the instrument.

→ If keys are deformed, take the instru-

ment to your dealer for repair. Do not

apply excessive force to the instrument

during assembly. Do not drop the

instrument. Do not set something on the

instrument and then close the case. Do

not apply excessive oil during mainte-

nance.

Cannot assemble because the joints are too

tight or too loose.

◆

The joint cork may have shrunk or

expanded due to changes in temperature

or humidity.

→ If the joint is tight, apply a small amount

of cork grease to the joint cork. If the

joint is still tight, apply cork grease to the

receiver side as well. When you ﬁnish

playing, store the instrument in its case;

do not leave it setting out.

◆

The joint cork may be worn.

→ Proper application of cork grease offers

some protection against wear. However,

no one can completely prevent cork wear

over time. Take the instrument to your

dealer for repair.

The keys are noisy.

◆

The keys may lack oil or the screws may be

loose.

→ Apply key oil once or twice a month (1-2

drops per location) to prevent abrasion.

Also, since woodwind instruments are

built using many small screws, fre-

quently check for loose screws and

tighten them if necessary.

◆

The cork or felt on the keys is worn or has

fallen off. Or, the keys may have come in

contact with the body or other keys.

→ Take proper care of the instrument to

prevent the cork or felt from falling off.

After you play the instrument, store it in

its case. Also, handle the instrument

carefully; avoid bumping or otherwise

exposing the instrument to physical

trauma.