Yamaha Silent Piano GB1KS Podręcznik konserwacji - Strona 7
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4. Check/ Adjustment of Silent mechanism
-Adjustment of action in the Silent mode is done with the Silent mechanism engaged.
-Switching of silent/ normal play is done with the Silent lever attached to the treble bottom of
keybed.
-The Silent lever can have the units interlock as listed below.
①The link in the back beam rotates
③Shank stopper drive lever rotates
⑤Regulating rod drive lever rotates
-In the Silent mode, the hammer shank stopper and regulating rod are set simultaneously.
Therefore, these two parts shall need check and adjustment.
-In the Silent mode, the sostenuto pedal is ineffective.
[Hammer shank stopper check/ adjustment]
① Pull the Silent lever to activate the Silent mechanism.
② Adjust and set the hammer shank stopper cushion to contact the hammer shank
vertically. Visual confirmation is possible (Fig.8).
③ Set the hammer shank stopping position to 5 – 6mm from the strings (Fig.11).
④ Disengage the Silent lever and make sure that the hammer shanks do not contact
the hammer shank stopper when depressing keys.
◆Hammer shank stopper rotation amount adjustment
Stopper cushion position
Adjustment spots
Fig.9
②The lever link rotates (white plastic)
Vertical to the hammer shank
Adjust cable length behind Silent lever (Fig.9). If adjusting
cable length is not enough, use the stroke adjustment screw
in the back of Silent lever (Fig.10).
Fig.8
Unscrew (lock after adjustment)
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④Shank stopper rotates
⑥Regulating rod rotates
Fig.10
Stroke Adjustment Screw