Yamaha Disklavier MX-100A Service Manual page 23

Removing the Pedal Sensor Unit:
28) Remove the connector of the Sensor Circuit
Board (CN3).
29) Remove the screws shown in Figure 11, and take
out the unit.
Removing the I/O and Sensor Circuit Boards:
30) Remove all of the connectors.
31) Remove the six screws of the Sensor circuit board
and the seven screws of the I/O circuit board.,
and take out the two units. (See Figure 12.)
Removing the Power Source Unit:
* Disconnect the AC plug.
32) Disconnect the three connectors at (A). (See
Figure 13.)
* The figure shows the power source unit as viewed
from directly above.
33) Remove the two screws at (B) and loosen the two
screws at (C).
34) Shift the unit in the direction of the arrow and take
it out.
20
Figure 11 .
Figure 12.
Figure 13.