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● The fallboard does not open and close smoothly.
Possible Cause 1 : The cable touches the fallboard at the inner left side of the piano body.
Solution 1 : Bundle and push backwards the cables using the binder.
● After releasing the Mute mode, additional keystrokes are needed before the piano starts
emitting sounds.
Possible Cause 1 : The mute mechanism does not function well.
Solution 1 : Replace the springs of the mute mechanism on the inner side of the piano and
Solution 2 : Loosen the screws on the drive part of the entire mute mechanism, and
【I】 Problems with the Soundboard Speaker
● No sound comes from the soundboard speaker.
Possible Cause 1 : The headphone is connected or in use.
Solution 1 : This is as designed.Plug off the headphone from the controller.
Possible Cause 2 : The connector may be disconnected.
Solution 1 : Check the connectors of the sound source unit.
Possible Cause 3 : A connector inside the sound source unit is disconnected.
Solution 1 :
Possible Cause 4 : There are some problems with the sound system PWB board.
Solution 1 :
● Sound comes out from the supplementary speaker on the pillar, but no sound comes
from the soundboard.
Possible Cause 1 : Pressing force of the transducer is not properly adjusted.
Solution 1 : Referring to 〔3〕 【E】 , adjust the pressing force of the transducer.
Possible Cause 2：The cable of the transducer (actuator) is disconnected.
Solution 1 : Referring to 〔3〕 【E】 , remove the actuator (transducer) cover and check the
Possible Cause 3 : The transducer (actuator) is faulty.
Solution 1 :
● The transducer is functioning, but no sound comes from the supplementary speaker on
the pillar.
Possible Cause 1 : The wire inside the speaker box is disconnected.
Solution 1 :
Possible Cause 2 : The speaker unit is out of order.
Solution 1 :
on the action.
adjust any distortion of the assembly.
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