HP ProLiant XL270d Gen9 Maintenance And Service Manual page 82

15. Remove the riser cross bracket.
16. Remove the power riser.
17. Remove the PCI riser modules.
18. Remove all DIMMs.
19. Remove the heatsink:
a. Loosen one pair of diagonally opposite screws halfway, and then loosen the other pair of screws.
b. Completely loosen all screws in the same sequence.
c. Remove the heatsink from the processor backplate.
20. Open each of the processor locking levers in the order indicated, and then open the processor
retaining bracket.
82 Removal and replacement procedures