Yamaha YFL412 Manuel du propriétaire - Page 15
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Troubleshooting
The tone is not clear, or the instrument plays out of tune.
The tone reflector may be out of alignment.
→ If you couldn't properly adjust the position of the reflector, contact the dealer from whom you pur-
chased the instrument.
The pads and tone holes may be out of alignment or the pads may be worn.
There may be a dent or some other deformation in the body of the instrument.
→ Contact the dealer from whom you purchased the instrument.
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The keys are stiff and function poorly.
The spring may be dislodged.
→ Take care and return the spring to its proper position.
Excessive force applied to the keys may have bent them.
→ Contact the dealer from whom you purchased the instrument.
Too much oil may have been applied to the key mechanisms.
→ Wipe away excessive oil from the key mechanisms. If that doesn't improve key function, contact the
dealer from whom you purchased the instrument.
Attaching or removing the headjoint or footjoint is difficult.
There may be dust or grime on the joint.
The body may have become deformed.
The headjoint may have been left attached to the body for a long period of time.
→ Contact the dealer from whom you purchased the instrument.
The keys produce noise when played.
Felts or corks may be deformed.
Excessive force applied to the keys may have bent them.
→ Contact the dealer from whom you purchased the instrument.
The key mechanisms may be worn.
→ Apply some key oil to the key mechanisms. If that doesn't improve key function, contact the dealer
from whom you purchased the instrument.
Screws may have come loose.
→ Re-tighten the screws.