Yamaha Disklavier E3 Series Maintenance Handbook page 27

Grand Piano
A. Adjusting the Hammer Sensor Unit
1. Service Center mode  4-2. Hmr Sensor Test
2. Push the quiet button on the switch box to enter the quiet mode.
3. Two beeps (M1, M2) sound when hammer head is raised.pushed toward back.
M1 (the first beep): ON
M2 (the second beep): ON – Hammer shank stop position +1.5±1mm
4. Adjust the hammer sensor height adjuster. (Push the quiet button to quit the quiet
mode first.)
Loosen lock screw D, then adjust sensor
height by turning adjuster E.
Shank stop position: 5mm-6mm from string
シャンクストップ位置 ： 弦から５～６mm
M2 ON timing: Shank stop position +1.5mm±1mm
M2 ON タイミング ： シャンクストップ位置＋1.5±1mm
Hammer sensor height adjuster
調整用歯車
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