f) Using a Phillips screwdriver, replace and screw in the two screws (B) that attach the backplane to
the power supply cage. See the previous gure.
g) Using a Phillips screwdriver, replace and screw in the four black screws (A) that mount the
backplane to the chassis. See the previous gure.
3. Remove the socket dust covers from the system processor module sockets on the new system
backplane:
a) Grasp the latches on both sides of the socket dust cover and squeeze them inwards until the
latches release from the pins on the system backplane. See the following gure.
b) Lift the socket dust cover straight up as shown in the following gure. Set the dust cover aside.
Figure 71. Removing the socket dust covers
c) If your system has a second system processor, repeat steps “3.a” on page 71 through “3.b” on
page 71 to remove the other socket dust cover.
4. Place the original system backplane on the packaging for the replacement system backplane FRU
and place it near the system with the replacement system backplane.
5. Install the system processor modules from the original system backplane in the new system
backplane:
a) If dust or debris is present on the system processor socket on the new system backplane, use the
supplied air pump to clean the socket before you install the new system processor. Blow small
bursts of air from the center toward the sides of the socket, as shown the following gure.
Removing and replacing the system backplane in the 5105-22E, 9008-22L, 9009-22A, 9009-22G, 9223-22H,
or 9223-22S 71
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