The corner stapler movement motor is at the bottom of the corner stapler unit.
Preparation
Remove booklet unit (Booklet Unit Removal)
Remove motor (
x1,
x2).
Re-installation
Re-attachment of the motor is difficult. Removal of this bracket is recommended before you re-attach the motor.
Disconnect and remove bracket:
[A] Front (
x2)
[B] Rear (
x2)