Yamaha Silent Piano GPS-SH Series, Maintenance Handbook

Page: 10 / 24

4. Sensor Unit Adjustment
Adjustment is required when the unit is detached or replaced.
■
Key sensor unit adjustment
[Standard]
[Procedure]
■
Hammer sensor unit adjustment
[Standard]
[Procedure]
1) Turn on the power switch while pressing the [REC] and [PLAY] to get into Test Mode.
2) Select "t04" to activate Hammer Sensor Test.
Please refer to 6. Test Mode (Page 15) .
3) Rotate
the adjustment dial to adjust the M2 position.
[Adjustment Procedure]
1) Loosen Long lock screw (A)
2) Loosen Lock screw (B)
3)
4) Tighten
Lock screw (B)
5) Tighten Long lock screw (A)
■
Pedal sensor unit adjustment
[Damper pedal detection position adjustment]
[Shift pedal sensor / Sosutenuto peal sensor detection position adjustment]
Adjustment is required when the unit is detached for action regulation.
Fig.6
a
Adjustment screws
Fig.7
Grand Piano
Adjustment dial
(A)
（
C
）
（
B
）
Lock plate
Adjust the gap between the bottom surface of a black key
located near the sensor bracket and the upper surface of the
key sensor unit to 3.0mm to 5.0mm when depressing the
black key to the lowest point, and the gap between the
keyboard and Key sensor rail so that it is parallel, also when
depressing the black key to the lowest point. (Fig.6)
Adjust from the bottom of the keyboard with 2 adjustment
screws to make a gap of appropriate size.
Adjustment spots : Sensor brackets: 4
Adjustment screws: 2 each (Fig.7)
M2 Buzzer sound position is 0.5mm to 2.5mm before shank stopping position. (Fig.8)
Damper pedal detection position adjustment shall be done with registering Half point position in the
Damper Pedal Calibration mode. Please refer to 5. Calibration Mode (Page 12).
Shift / Sosutenuto pedal sensor detection position adjustment shall be done with the test mode
buzzer sounding positions. Please refer to 6. Test Mode (Page 15).
Hammer shank stopping position to 5mm – 6mm from the strings
M2 : Shank stopping position 0.5mm to 2.5mm
Fig.8
Long lock screw
（
A
）
Hammer sensor height adjuster
（
C
）
Lock screw
（
B
）
Rotate Hammer sensor height adjuster (C) to adjust the M2 position.
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