Yamaha Disklavier MX-100B Service Manual page 17

6. Adjusting the key sensor unit
Adjust the height adjustment screws
white key is pressed 4.5 +/-0.5 mm.
• If ON is too soon (shallow) .... tighten the screw.
• If ON is too late (deep) .......... loosen the screw.
Procedure (from the condition of Piano Test)
(1) Press a key nearby the height adjustment screw.
(2) Slowly release the key.
(3) Adjust the position at which the buzzer stops (key off).
7. Adjusting the pedal sensor unit
Pedal sensor
Sensor bracket
Adjustment screw
* If the buzzer does not sound even when the test program is in Piano Test (old ROM version),
refer to the service manual and make adjustments using a MIDI instrument or a MIDI sensor
checker.
(four locations) so that the key sensor turns ON when a
Use the adjustment screw
the sensor so that it turns ON at the following
positions.
• Damper pedal.... when the damper felt is 1 mm
•Soft pedal .......... when 2—3 mm above the
Procedure
(1) Individually depress the damper and soft
Bottom sill
Pedal lever
(2) The buzzer will sound at the ON position.
Pedal lever hook
Key sensor unit
Height adjustment screw
Balance rail
Front rail
Key shutter
Keyboard
Key bed
above the string (near the
49th key).
hammer rail
• if ON is too soon ........ raise the sensor.
• if ON is too late .......... lower the sensor.
pedals, and make adjustments.
Adjust the sensor accordingly.
MX-100B
to raise and lower