Oracle X5-4 Service Manual page 230

Replace the Power Supply Backplane Board (FRU)
The screw is located at the left front corner of the motherboard behind FM3.
16. To unlock the motherboard, use the memory riser card guide by the processors
and the handle above the SP card slot to slide the motherboard toward the front
of the server.
This action unlocks the motherboard and plate assembly.
Note -
extension piece slides out of its hole in the chassis back wall.
While gently sliding it away from the back of the server, carefully lift the front
17.
end of the motherboard several inches.
230 Oracle Server X5-4 Service Manual • December 2015
As you slide the motherboard forward, check that the Locator indicator light pipe