IBM Power Systems 7063-CR1 Service Manual page 49

11. Remove the 14 screws from the system backplane. The screw locations are shown in Figure 32.
Figure 32. Screw locations. The two screws at (A) are black and slightly longer.
12. Moving the front cables out of the way, and carefully holding the processor heat sink, move the
system backplane slightly forward and up to remove it. See Figure 33 on page 34.
33
Removing and replacing parts in the 7063-CR1