Remove the front cover (see page 11).
Pull out the 8 connectors from the A-board.
Remove the 3 screws A and remove the A circuit board E.
Push the holders B and remove the upper shaft sensor C.
1. Attach the new upper shaft sensor C unit into the setting plate. After replacing the upper
shaft sensor unit, make sure it doesn't touch the upper shaft shield plate D.
2. Attach the front cover.
UPPER SHAFT SENSOR