IBM pseries 690 Installation Manual page 216

a. Remove the two screws at the left and right of the top frame side covers (items 7 and 8 in the
illustration on 195).
b. Lift off the covers.
c. Remove the eight screws around the perimeter of the top panels at the front and rear of the rack
top-frame assembly. Remove the two top panels (item 1 in the illustration on page 199).
d. Carefully note the orientation and position of the foam and metal air baffle (item 4 in the illustration
on page 199) at the middle left side of the rack top frame assembly. Remove the screw, then tilt
the baffle toward the front of the rack top frame.
Note: The foam and metal air baffle must be reinstalled on the left side in its original location. The
foam baffle is a critical part for proper cooling of the BPEs.
e. Remove the single screw at each end of the cross brace (item 5 in the illustration on page 199).
Remove the cross brace.
f. Remove the two screws at the front of the left BPE rail, and remove the rail (item 3 in illustration on
page 199).
g. Remove the two screws at the rear of the right BPE rail, and remove the rail (item 3 in illustration
on page 199).
1 Rack Top Frame
2 Rack Chassis
Proceed to "Installing the Rack Top Frame" on page 201.
200 Eserver pSeries 690 Installation Guide
4
3
2
3 Top Frame Bolts
4 Rack Top Frame Cross Brace