II-2
1. UP Silent Models: Adjusting the Hammer Shank Stopper and Let-Off
For UP silent models: During silent mode, the jack must escape before the hammer shank touches the shank stop-
per. This means that the hammer let-off must be set somewhat wider than on a conventional acoustic piano.
Owing to a change in the shank-stopper specification, the shank-stop and let-off positions have been changed to
the values indicated below.
Adjustment Principles
• The shank-stop position should be as close to the strings as feasible without producing any acoustic
sound.
• The let-off position must come just before the shank-stop position, and the jack must fully escape.
• The adjustments must not interfere with acoustic-mode sound.
Adjustment
1. Rotary Type (Shank stop: 10–12 mm; Let-off: 12–13 mm)
• Use the turn buckle to adjust the angle of the shank stopper (so that the stopper is parallel to the shank
when it makes contact).
• Adjust the shank stop position by adding or removing spacers between the stopper and the bracket.
2. Plate Type (Shank stop: 5–7 mm; Let-off: 6–8 mm)
• Use the turn buckle to adjust the shank stop position.
• If you cannot make the necessary adjustment with the turn buckle, add or remove spacers as necessary
between the stopper and the bracket.
Type Shank Stop Let Off
MP
Rotary Type 10-12 mm 12-13 mm
94/10- Plate Type 5-7 mm 6-8 mm
98/1- Swing Type 4.5-7.0 mm 5.5-8.0 mm
00/2- Push Type 4.5-7.0 mm 5.5-8.0 mm (MP1Z and MP3Z only)
MPX Motor Driven 4.5-6.5 mm 5.5-8.5 mm
Rotary Plate Swing Push
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