Yamaha Cornets Owner's Manual - Page 13
Browse online or download pdf Owner's Manual for Musical Instrument Yamaha Cornets. Yamaha Cornets 16 pages. Owner's manual
Print Page
Troubleshooting
Tone is not clear and pitch is poor.
• The valves are dirty.
➞ Clean the valves.
• There is a large dent or air is leaking
from the trumpet.
• The mouthpiece doesn't fit the
mouthpiece receiver and air is
leaking.
➞ Contact the dealer from whom you
purchased the instrument.
• The felt or cork is damaged.
➞ Contact the dealer from whom you
purchased the instrument.
No sound.
• The holes in the piston are not aligned
with the holes in the valve casing.
➞ Make sure the number stamped on the
piston matches the number stamped
on the valve casing.
The pistons are sluggish.
• Dirt has accumulated between the
pistons and valve casings.
➞ Clean the inside of the valve casing.
• Dropping or hitting the piston has
damaged it.
➞ Do not use the instrument with a
damaged piston.
Contact the dealer from whom you
purchased the instrument.
• The piston or valve casing is corroded.
➞ Contact the dealer from whom you
purchased the instrument.
The valve slide is stuck and cannot
be removed. The slide is sluggish.
• Dirt has accumulated between the
valve slide and inner tube.
➞ Thoroughly remove dirt and apply some
slide grease that matches the type of
slide, or apply some tuning slide oil.
• 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.
• Dropping or hitting the instrument
has damaged the screw.
➞ Contact the dealer from whom you
purchased the instrument.
Air does not pass thorough the
instrument.
• The piston is in the wrong valve
casing.
➞ Set the piston into the proper valve
casing.
The mouthpiece cannot be
removed.
• The instrument was dropped or hit
with the mouthpiece attached. Or, the
mouthpiece was inserted with 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 a strange
sound when played.
• Solder on the instrument has come
loose, or a foreign object is inside it.
➞ Contact the dealer from whom you
purchased the instrument.
The piston makes a metallic noise
when pressed.
• The felt is torn or lost.
➞ Please contact the dealer from whom
you purchased the instrument.
• The cover on the piston valve or valve
casing is loose.
➞ Firmly tighten the covers.
• The piston's shaft is bent.
➞ Please contact the dealer from whom
you purchased the instrument.
25