IBM System x3650 M3 4255 Service Manual page 197

1. Read the safety information that begins on page vii and "Installation guidelines"
on page 169.
2. Turn off the server and peripheral devices and disconnect all power cords and
external cables.
3. Remove the cover (see "Removing the cover" on page 177).
4. Remove PCI riser-card assembly 2 (see "Removing a PCI riser-card assembly"
on page 188).
5. Grasp the top of the air baffle and lift the air baffle out of the server.
Attention: For proper cooling and airflow, replace all air baffles, making sure
all cables are out of the way, before you turn on the server. Operating the
server with any air baffle removed might damage server components.
6. If you are instructed to return the microprocessor air baffle, follow all packaging
instructions, and use any packaging materials for shipping that are supplied to
you.
Chapter 5. Removing and replacing server components
179