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● No sound is emitted on the consecutive keys on the keyboard.
Possible Cause 1 : The install position of the sensor PWB assy is floating upwards (too far from the shutter).
Solution 1 :
Possible Cause 2 : Something abnormal with the sensor board.
Solution 1 :
● Volume levels are variable or only strong keystroke makes sound, while a light keystroke does not.
Possible Cause 1 : The hammer stop position at the mute mechanism is too far from the string. Or the sensor
does not detect it well.
Solution 1 :
Solution 2 :
● No sound occasionally comes out with consecutive keystroking.
Possible Cause 1 : The sensor malfunctions when the hammer hits strongly by consecutive stroking.
Solution 1 : Bring the sensor closer to the string side.
Solution 2 :
● Sound was stopped or deadened while depressing the key.
Possible Cause 1 : The hammer gets back to the sound stop position when it returns to the backstop.
Solution 1 : Adjust the backstop at a position of 15 mm from the string.
【E】 Problems with Mechanical Noise
● Noise can be heard before the hammer reach the string or the hammer sticks on it.
Possible Cause 1 : The shutter and sensor positions are too close in the front-back direction, and the shutter
touches inside the sensor cover.
Solution 1 : Loosen the screws of the sensor PWB frame or the sensor PWB assy, then
Possible Cause 2 : The shutter and sensor positions are too close vertically and the shutter touches the
bottom of the sensor cover.
Solution 1 : Referring to 〔 3〕 【 C】 " Adjusting the Sensor Height" , adjust the height of sensor.
Possible Cause 3 : The unit width is too long vertically and the pin block (wrest plank) is located too low,
therefore the shutter touches the lower surface of the pin block.
Solution 1 : Plane the lower surface of the pin block.
All manuals and user guides at all-guides.com
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