Lenovo ThinkServer RD550 - Manual (Page 119)

CAUTION:
The heat sink might be very hot. Turn off the server and wait several minutes to let the server cool
before removing the server cover.
Note: Use any documentation that comes with the heat sink and follow those instructions in addition to
the instructions in this topic.
To install or replace a heat sink, do the following:
1. Remove all media from the drives and turn off all attached devices and the server. Then, disconnect all
power cords from electrical outlets and disconnect all cables that are connected to the server.
2. Prepare your server. See “Removing or extending the server from the rack cabinet” on page 63.
3. Remove the server cover. See “Removing the server cover” on page 63.
4. Remove the cooling shroud. See “Removing and reinstalling the cooling shroud” on page 66.
5. Locate the heat sink you want to replace or the place for installing the second heat sink. See “Server
components” on page 25.
Chapter 6 . Replacing hardware 105