Yamaha YBB-841 Manuel du propriétaire - Page 18

Parcourez en ligne ou téléchargez le pdf Manuel du propriétaire pour {nom_de_la_catégorie} Yamaha YBB-841. Yamaha YBB-841 31 pages. Alto (tenor) horn/baritone/ euphonium/tuba/sousaphone

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Troubleshooting

Tone is not clear and pitch is poor.

• Th e valve felt or cork is damaged.

 Replace the felt or cork with a new one.

• A large amount of dirt has accumulated

inside the instrument.

 Wash it out.

• Th ere is a large dent in the tubing or air is

leaking. Or the mouthpiece is loose and air is

leaking from around the mouthpiece.

 Contact the dealer from whom you pur-

chased the instrument.

No sound.

• Th e holes in the pistons are not aligned with

the holes in the valve casings.

 Make sure that the number stamped on the

piston matches the number stamped on the

valve casing.

Th e valves are sluggish.

• Dirt has accumulated between the pistons

and valve casings.

 Clean the inside of the valves.

• Dust has scratched the inside of the valve

casings.

 Wash out the dust as soon as possible.

• Dropping or hitting the piston has damaged

it.

 Never use the instrument with a damaged

piston. Contact the dealer from whom you

purchased the instrument.

• Th e pistons or valve casings are corroded.

 Contact the dealer from whom you pur-

chased the instrument.

Th e rotors are sluggish.

• Dirt has accumulated between the rotors and

valve casings.

 Oil the lever mechanisms with lever oil.

 Contact the dealer from whom you pur-

chased the instrument.

Th e valve slide is stuck and cannot be

removed. Th e slide is sluggish.

• Th ere is dirt or dust inside the slide.

 Th oroughly remove dirt and apply some

slide grease that matches the type of slide.

Or apply some tuning slide oil to the slide.

• Dropping or hitting the slide has caused a

dent, or the slide was bent while cleaning.

 Contact the dealer from whom you pur-

chased the instrument.

Th e screw is too tight and cannot be

removed.

• Th e screw is corroded.

• Hitting the instrument has damaged the

screw.

 Contact the dealer from whom you pur-

chased the instrument.

Air does not pass through the instru-

ment.

• Th e piston is in the wrong valve casing.

 Set the piston into its proper valve casing.

Th e mouthpiece cannot be removed.

• Th e instrument was dropped or hit with the

mouthpiece attached. Or, the mouthpiece

was inserted with too much force.

• Th e instrument has been left for a long

period of time with the mouthpiece inserted

in the instrument.

 Contact the dealer from whom you pur-

chased the instrument.

Th e instrument makes an abnormal

sound when played.

• Solder on the instrument has come loose, or

a foreign object is in the pipe.

 Contact the dealer from whom you pur-

chased the instrument.