HPE ProLiant XL250a Gen9 Maintenance And Service Manual page 73

To replace the system board:
Install the system board.
1.
Connect all cables disconnected from the failed system board.
2.
Connect cables to the drive backplane
3.
Install all processors ("Processor" on page 65).
4.
Install all heatsinks ("Heatsink" on page 61).
5.
Install all DIMMs ("DIMMs" on page 48).
6.
Install the processor air baffle
7.
Install the PCIe riser board assembly
8.
Connect the intra-tray signal cable to the system board on the lower server tray.
9.
("Drive cabling" on page 91).
("Processor air baffle" on page 46).
("PCIe riser board assembly" on page 50).
Removal and replacement procedures 73