II-40
6-2 GPS, GT1, GT2, GT7
Enter the appropriate sensor test mode.
1A + 3B + 4C + [POWER] Key Sensor Test, Pedal Sensor Test
1A + 3B + [POWER] Hammer Sensor Test, Pedal Sensor Test
● Key sensor
2-beams 4-points
Slowly depress key and confirm by listening to the buzzer. (Use headphones.)
Check: • Confirm that all points K1 to K4 are reached.
• Confirm that the key depth for K2 is 4.5 mm.
Adjust: Adjust the sensor height. (Not required for GT models.)
● Hammer sensor
1-beam 2-points
Set the instrument into silent mode. Lift each hammer, and confirm that the second buzzer comes on
when the hammer is 1.5 mm in front of the shank stop position.
Adjust: Adjust the sensor height.
K1
K2
K3
K4
Loosen lock screw D, then adjust the sensor height by turning adjuster E.
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