Yamaha Silent Piano GPS-SH Series Onderhoudshandboek - Pagina 7
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3 .Check regulation and Adjustment 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 [POWER] or [QUIET] button on the front panel for
Grand Piano, with the Silent Pedal (Center) for Upright Piano.
Grand Piano
■Hammer shank stopper check / adjustment
[Standard]
・Adjust and set the hammer shank stopper cushion to contact the hammer shank vertically.
・While the silent mechanism is disengaged, hammer shanks do not contact the hammer shank
stopper when depressing keys. (Fig.1)
[Procedure]
Turn the stroke adjustment screws A and B on the treble
side of the Keybed (Fig.2) as necessary to adjust the shank
stopper angle.
・ Turn nut A to so that the hammer shank stopper is
parallel to the strings when the silent mechanism is
inactive.
・Turn nut B to so that the hammer shank stopper is
vertical to the hammer shank when the silent
mechanism is active.
■Hammer shank stopping position adjustment
[Standard]
Set the hammer shank stopping position to 5mm – 6mm from the strings
[Procedure]
Replace Hammer shank stopper cushioning as needed.
Hammer shank stopping position to 5mm – 6mm from the strings
Fig.1
Shank stopper cushioning
Tickness
Part No.
5.5mm
T6210100
5.0mm
T6210110
4.5mm
T6200120
4.0mm
T6210130
3.5mm
T6210140
3.0mm
T6210150
2.5mm
T6210150
Cushion lengths are all 378mm.
Cut as follows:
Bass:365mm, Middle:375mm, Treble:232mm .
‐ 7 ‐
A
B
Fig.2