IBM System x3650 M3 4255 Service Manual page 199

DIMM air baffle
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. If necessary, remove riser-card assembly 1 (see "Removing a PCI riser-card
assembly" on page 188).
5. Place your fingers under the front and back of the top of the air baffle; then, lift
the air baffle out of the server.
Attention: For proper cooling and airflow, replace all the air baffles before you
turn on the server. Operating the server with any air baffle removed might
damage server components.
PCI riser-card
assembly 1
Chapter 5. Removing and replacing server components
181