to replace the service access cover, do the following:

    1. align the service access cover with the top of the system, about 25 mm (1 inch) from the front of the system. the flanges on the left and right sides of the cover should be on the outside of the system chassis.

    2. hold the service access cover against the system drawer, and slide it toward the front of the system.

    the front edge of the service access cover slides beneath the upper chassis ledge.

    3. tighten the thumbscrews located on the rear of the cover.