Yamaha disklavier DS4M4 PRO Maintenance Handbook - Page 21

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Yamaha disklavier DS4M4 PRO Maintenance Handbook
6. Regular field servicing

6 - 1. Pedal unit adjustment

Pedal rod adjustment
--> Please refer to 5-6. for the adjustment
Pedal solenoid adjustment
When a pedal solenoid becomes noisy due to heavy use, the following procedure is recommended.
1, Loosen a and b screws a little until the solenoid moves without beeing tight.
2, Tighten a screw and feel by hand moving it until the solenoid gets a little tight feeling then
turn the screw very little back to minimize the clearance between the solenoid and coil.
3, Repeat the same procedure also for the b screw.
4, Perform the pedal calibration by using PRC100 controller.
MHB23 MKIV/PRO DIOV1.05, SCV.1.01 PAGE.19
You can perform this adjustment in
Stand-by mode.
* needs 2 min. discharging after put-
ting in Stand-by mode