Completely power off the Enterprise system.
See the power off instructions in Chapter 11, Powering Off and On .
Remove the system key.
Grasp the bottom corners of both sides of the top bezel and pull it toward you.
Tilt the top bezel upward to a 45o angle and remove the bezel.
Set the bezel aside (Figure E-15).
Loosen the two captive screws securing the key switch assembly to the enclosure.
Viewed from the front of the system, the key switch assembly is on the right side of the enclosure.
Gently pull the key switch assembly from the enclosure (Figure E-16).