11. Lower the microprocessor straight down into the system board socket of the
system board.
12. Lower the microprocessor retainer.
13. Lock the retainer with the small handle to secure the microprocessor in the
socket.
14. Use the thermal grease syringe to place five drops of grease on the top of the
microprocessor. Each drop of grease should be 0.03ml (3 tick marks on the
grease syringe).
15. Install the heat sink and fan assembly on the system board.
16. Connect the heat sink and fan assembly cable to the system board. See
“Identifying parts on the system board” on page 87.
17. Go to “Completing the FRU replacement” on page 112.

Chapter 9. Replacing FRUs (Types 7390, 7391, 7392, 7396, 7397, and 7398) 135