Lenovo ThinkSystem ST250 V2 Maintenance Manual page 144

Step 1. Install the processor if one is not yet installed (see "Install the processor " on page 185).
Step 2. Align the four screws on the heat sink and fan assembly with the corresponding screw holes on the
system board.
Note: Make sure that the "Front" label is facing the front of the server.
Step 3. Install the heat sink and fan module.
Figure 65. Installing the heat sink and the fan module
a. & Tighten screw 1 and 2: First, partially tighten screw 1; then, fully tighten screw 2. Finally,
fully tighten screw 1.
b. & Tighten screw 3 and 4: First, partially tighten screw 3; then, fully tighten screw 4. Finally,
fully tighten screw 3.
Step 4. Connect the fan power cable to the Fan 2 connector on the system board. See "System-board
components" on page 27 and "Fan power cable" on page 63
After this task is completed
Complete the parts replacement. See "Complete the parts replacement" on page 217.
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