Oracle X5-4 Service Manual page 255

26. To secure the motherboard to the chassis, tighten the captive screw.
Remove the CPU cover plates from the relevant sockets.
27.
See "Remove a CPU Cover Plate (FRU)" on page
28. Reinstall the CPUs and heatsinks.
See "Install a Heatsink and CPU (FRU)" on page
29. Reinstall the power supply cable to the motherboard.
Connects to the motherboard from the power supply backplane.
30. Reinstall the disk backplane power and data cables.
Reinstall any USB flash drives that were removed from the internal USB ports.
31.
Reinstall the system battery.
32.
Carefully thread the to-PCIe card end of each cable, SAS, NVMe (if present), and,
33.
ESM, between the CPU 0 heatsink and the power supply side wall and in to the
PCIe area.
Some of the cable connectors only fit one way between the CPU 0 heat sink and power supply
side, as the space is very narrow.
Replace the Motherboard (FRU)
181.
193.
Servicing FRU Components 255