Lenovo TD100X manual Thermal grease

b.Turn the VRM so that the keys align with the slot.

c.Insert the VRM into the connector by aligning the edges of the VRM with the slots at the end of the VRM connector. Firmly press the VRM straight down into the connector by applying pressure on both ends of the VRM simultaneously. The retaining clips snap into the locked position when the VRM is seated in the connector.

8.Reconnect any cables that you disconnected during the removal of the old microprocessor.

9.Reinstall microprocessor air baffle.

10.Rotate the rear system fan air baffle back into the server.

11.Rotate the power supply cage back into the server.

12.If you have a hot-swap model, reinstall the hot-swap power supplies back into the power supply cage.

13.Install the side cover (see “Installing the side cover” on page 79).

14.Lock the side cover.

15.Reconnect the external cables and power cords; then, turn on the attached devices and turn on the server.

Thermal grease

The thermal grease must be replaced whenever the heat sink has been removed from the top of the microprocessor and is going to be reused or when debris is found in the grease.

To replace damaged or contaminated thermal grease on the microprocessor and heat sink, complete the following steps:

1.Place the heat sink on a clean work surface.

2.Remove the cleaning pad from its package and unfold it completely.

3.Use the cleaning pad to wipe the thermal grease from the bottom of the heat sink.

Note: Make sure that all of the thermal grease is removed.

4.Use a clean area of the cleaning pad to wipe the thermal grease from the microprocessor; then, dispose of the cleaning pad after all of the thermal grease is removed.

Microprocessor	0.01 mL of
	thermal grease

5.Use the thermal-grease syringe to place 16 uniformly spaced dots of 0.01 mL each on the top of the microprocessor.

Chapter 4. Removing and replacing server components 141