– 1 –
Figure 1
Figure 2
Figure 3
Slides in and out smoothly
Connector cover
Holding screw x 5
Sound Source Box
Screw C
Parallel
(Mating surfaces)
Parallel
(Mating surfaces)
Control box
Control panel
Control panel
View from underside
Front view
1 mm gap
1 mm gap
Rear view
View from above
View from the piano underside
Screw B
Screw A
【D】Adjusting the Controller
[Preparation]
・Phillips Screwdriver No.2
The GP-ATX is equipped with a drawer-style controller that does not compromise the appearance of the
piano. Therefore if an adjustment is needed for appearance or operational reasons between the controller
box and the control panel (containing the LCD and the operation buttons in a pull-out style), follow the
procedures below.
[Work Procedure]
【D-1】
As shown in Figure 1, remove the connector cover, by loosening five screws, from the sound
source box located at the back of the keybed, then unplug the connector which is connected to
the controller.
【D-2】
Remove the tapping screws fastening the controller and the cable on the keybed, then take out
the controller.
【D-3】
Loosen three screws A in Figure 2. Adjust the side positions and the parallel balance with the
control box, then tighten again screws A.
＊ The left and right clearances of the control panel should be adjusted to 1 mm for both sides as
shown in Figure 2.
【D-4】
Loosen two screws B shown in Figure 2. Adjust the lengthwise position of control panel and
control box, then tighten again screws B.
＊ Level out precisely the control panel and the control box inner face.
【D-5】
Loosen two screws C (Figure 3) located on the back of the control panel. Adjust in a way that the
control panel can slide in and out smoothly, then tighten again screws C.
＊ By moving the screw C along the inclined plane, the rack gear inside the box goes up and
down so that you can adjust the engagement (mesh) between the gear and the rotary damper
of the control panel.
If the controller panel “drawer” does not slide smoothly after these adjustments, remove the controller
cover and take out the slide assy, then check the smoothness of the rod and slide fitting, and the friction
possibly caused by the wires inside the box.
＊ For more details, contact our piano instrument division.
