Yamaha YHR-671, Руководство пользователя

Страница: 16 / 21

32
Tone is not clear and pitch is poor.
• Dirt has accumulated inside the tubing.
➞
Use the procedure described in the “Valve
Slide Maintenance” section and wash out
the insides of the tubing.
• The water key cork is cracked causing air to
leak.
➞
Replace the water key cork with a new one.
• The mouthpiece is loose and rattles, and air
is leaking from around the mouthpiece.
• There is a large dent in the tubing, and air is
leaking from the ferrules where the tubing
connects.
• There is a foreign object in the tubing.
• Holes in the rotors are not aligned with holes
in the valve casing branches.
➞
Contact the dealer from whom you pur-
chased the instrument.
The rotors are sluggish.
• The string is loose.
➞
Use a screwdriver and tighten the string.
• Dirt has accumulated between the valve cas-
ing and rotor.
• The valve casing is deformed.
• The rotary valve was disassembled, then reas-
sembled.
➞
Contact the dealer from whom you pur-
chased the instrument.
The valve slide is stuck and can not be
removed. The slide is sluggish.
• Dirt or dust has accumulated between the
outer and inner slides and the valve slide is
damaged.
➞
Remove dirt from the slides then apply
some slide grease.
• Dropping or hitting the slide has created a
dent, or the slide was bent while cleaning.
➞
Contact the dealer from whom you pur-
chased the instrument.
Troubleshooting
The screw is too tight and can not be
loosened.
• The screw is corroded.
• Hitting the screw has damaged it.
➞
Contact the dealer from whom you pur-
chased the instrument.
The mouthpiece can not be removed.
• The instrument was dropped or hit with the
mouthpiece attached. Or, the mouthpiece
was inserted with too much force.
• The instrument was left for a long period
of time with the mouthpiece inserted in the
instrument.
➞
Contact the dealer from whom you pur-
chased the instrument.
The instrument makes an abnormal
sound when played.
• Solder on the instrument has come loose.
• There is a foreign object in the tubing.
➞
Contact the dealer from whom you pur-
chased the instrument.