Yamaha Alto Horn, Baritone, Euphonium Руководство пользователя - Страница 16
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Troubleshooting
Tone is not clear and pitch is poor.
• The valve felt or cork is damaged.
➞ Replace the felt or cork with a new one.
• A large amount of dirt has accumu-
lated inside the instrument.
➞ Wash it out.
• There 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
purchased the instrument.
No sound.
• The 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.
The 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.
• The pistons or valve casings are
corroded.
➞ Contact the dealer from whom you
purchased the instrument.
The 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
purchased the instrument.
32
The valve slide is stuck and
cannot be removed. The slide is
sluggish.
• There is dirt or dust inside the slide.
➞ Thoroughly 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
purchased the instrument.
The screw is too tight and cannot
be removed.
• The screw is corroded.
• Hitting the instrument has damaged
the screw.
➞ Contact the dealer from whom you
purchased the instrument.
Air does not pass through the
instrument.
• The piston is in the wrong valve
casing.
➞ Set the piston into its proper valve casing.
The mouthpiece cannot be removed.
• The instrument was dropped or hit
with the mouthpiece attached. Or, the
mouthpiece was inserted with too
much force.
• The instrument has been left for a
long period of time with the mouth-
piece inserted in the instrument.
➞ Contact the dealer from whom you
purchased the instrument.
The instrument makes an abnor-
mal sound when played.
• Solder on the instrument has come
loose, or a foreign object is in the pipe.
➞ Contact the dealer from whom you
purchased the instrument.