IBM 390, 387, 393, 391, 389, 388, 441, 392 Replacing the heat sink and fan assembly, What to do next

7.Position the new rear system fan, which has four new rubber mounts attached, on the chassis so that the four new rubber mounts are aligned with the corresponding holes in the chassis. Push the rubber mounts through the holes and then pull on the tips of the rubber mounts from the other side of the chassis until the rear system fan is secured in place.

Figure 89. Installing the rear system fan

8.Connect the new rear system fan cable to the system fan 3 connector on the system board. See “System board components” on page 42.

9.If you are instructed to return the old rear system fan, follow all packaging instructions and use any packaging materials that are supplied to you for shipping.

What to do next:

•To work with another piece of hardware, go to the appropriate section.

•To complete the replacement, go to “Completing the parts replacement” on page 162.

Replacing the heat sink and fan assembly

Attention: Do not open your server or attempt any repair before reading and understanding the “Safety information” on page iii and “Guidelines” on page 83.

This topic provides instructions on how to replace the heat sink and fan assembly.

154ThinkServer User Guide