Yamaha YOB-431 소유자 매뉴얼 - 페이지 9

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Yamaha YOB-431에 대해서도 마찬가지입니다: 소유자 매뉴얼 (21 페이지)

Troubleshooting

Th e tone is not clear or the instrument

plays out of tune.

If pads are deformed or the body is crack-

ing, take the instrument to your dealer for

repair.

Th e keys are stiff . Th e keys do not move.

A spring may have been dislodged or the

keys may be deformed.

Cannot assemble because the joints are

too tight or too loose.

Th e joint cork may have shrunk or ex-

panded due to changes in temperature or

humidity.

Th e joint cork may be worn.

Th e keys are noisy.

Th e keys may lack oil or the screws may be

loose.

Th e cork or felt on the keys is worn or has

fallen off . Or, the keys may have come in

contact with the body or other keys.