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[Preparation]
・Phillips Screwdriver No.2
・Flat screwdriver No.2
The height of the sensor is one of the elements that has a direct influence on the emission of the electronic
sound and the muting position.
For instances, if the sensor is located at an extremely high position, the position of emitting sound may be higher
than the position where the hammer stops by the stop rail. In this state, no electronic sound will be emitted.
On the contrary, if the sensor is located too low, this may cause deterioration of the functionality in detecting
consecutive key stroking. This could also cause collision of the shutter (root part of hammer shank) and the assy.
In the following cases an adjustment is needed.
・ No sound is emitted (especially with weak strokes)
・ When playing in the acoustic mode, the sensor collides
with the shutter by strong stroking (snapping noise)
・ Poor performance in detecting consecutive key stroking
Also, when the height of the stop rail is lowered or the sensor PWB is replaced, please check and adjust
the functionality according to these procedures. The adjustment can be performed per section.
[Work Procedure]
【C-1】 Extract the action and rotate the sensor following the instruction steps
【C-2】 There are six height adjust screws which are shown in Figure 1.
【C-3】 Adjust upwards and downwards the adjust screw for the sensor height (Figure 2) using a flat
screwdriver.
※ Rotate clockwise : Lower Rotate counterclockwise : Lift
【C-4】 Set the sensor back and fasten with the screw, then put the action back into the piano following
h t
e
e r
v
r e
e s
p
o r
e c
d
u
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f o
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C
1 -
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【C-5】 Check the height of the sensor .
＊ Criteria for judging
・ Emits electronic sound by weak stroking at the center and both ends of each section.
・ The sensor does not collide with the shutter by strong stroking (no snapping noise) when
playing in the acoustic mode.
・ If it does not pass the criteria above, repeat the procedure from 【C-1】 for re-adjusting.
＊ For your information
・ If only the center area of the section does not pass the test, it might be good to correct the
warp of the sensor PWB frame by bending it with your hands.
・ If the sound stops immediately after a strong stroke, adjust the position of the backstop
higher (less than 15 mm high from the strings).
All manuals and user guides at all-guides.com
̶ > The sensor position is too high
̶ > The sensor position is too low
̶ > The sensor position is too low
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A
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A
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– 11 –
Six points to adjust indicated by circles
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Sensor height adjust screw
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Figure 1
Sensor
Shutter
Figure 2
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