NEC 140He User Manual page 276

9-18
Installation
IMPORTANT:
or loose parts inside the system.
1.
Position the cover on the chassis so that the cover tabs align with the chassis slots.
2.
While lightly pressing down on the cover, slide it toward the front of the chassis.
3.
Attach the cover to the chassis with the captive screws located on the rear of the cover.
Captive screws
Before installing the rear access cover, check that you have not left tools