Lenovo System x3250 M5 Installation And Service Manual page 221

If you are instructed to return the server component or optional device, follow all packaging instructions,
and use any packaging materials for shipping that are supplied to you.
Replacing the Operating temperature enhancement kit
Use this information to replace the Operating temperature enhancement kit in the server.
Read the safety information in "Safety" on page v and "Installation guidelines" on page 31.
If you are replacing a server component in the server, you need to slide the server out from the rack
enclosure, turn off the server and peripheral devices, and disconnect the power cords and all external cables.
To replace the Operating temperature enhancement kit, complete the following steps.
Step 1. Connect the Operating temperature enhancement kit to the system board (see "System-board
internal connectors" on page 26 for the location of the Operating temperature enhancement kit
connector on the system board).
Step 2. Route the cable along the chassis. Make sure the relevant cables pass through the cable clips.
Thermal sensor cable
Figure 137. Operating temperature enhancement kit connection for 2.5-inch hard disk drive model
.
Chapter 6 Removing and replacing server components
207