IBM 8647 - Eserver xSeries 225 Maintenance And Troubleshooting Manual page 75

12. Install the heat sink on the microprocessor:
Attention: Do not set the heat sink down after you remove the plastic cover
and do not touch the thermal grease on the bottom of the heat sink. Touching
the thermal grease will contaminate it. If the thermal grease on the
microprocessor or heat sink becomes contaminated, contact your service
technician.
Thermal grease
a. Remove the plastic cover from the bottom of the heat sink.
b. Align and place the heat sink on top of the microprocessor, grease side
down, in the retention bracket. Press firmly on the heat sink.
Attention: Alternate the tightening of the two captive screws to prevent
damage to the microprocessor. Ensure that the screws are completely
tightened (until they stop); otherwise, damage to the microprocessor will
occur.
c. Secure the heat sink to the microprocessor by tightening the captive
screws. Alternate between the two captive screws in the heat sink while
tightening them.
13. Install the air baffle.
14. Install the adapter airflow guide:
a. Rotate the front and rear adapter-retention brackets to the open (unlocked)
position.
b. Slide the adapter airflow guide into the guides on the air baffle and front
adapter-support bracket; then, push it into place, using care not to damage
any cables.
c. Rotate the front and rear adapter-retention brackets to the closed (locked)
position.
15. If you have other options to install or remove, do so now.
16. Replace the frame-support bracket (see "Removing the frame-support bracket"
on page 43).
17. Replace the side cover (see "Installing the side cover" on page 71).
18. Reconnect the external cables and power cords. Turn on the attached devices,
and turn on the server.
Heat sink
Chapter 4. Installing options
65