For access, remove these FRUs in order:
Attention: CPU is extremely sensitive. When you service the CPU, avoid any kind of rough handling.
Rotate the head of the screw in the direction shown by arrow [1] to release the lock; then remove the CPU.
CPU installation
When installing: Place the CPU on the CPU socket [a], and then rotate the head of the screw in the direction shown by arrow [b] to secure the CPU.