Lenovo 3823, 3821, 3822, 3719 manual Removing a heat-sink retention module

Removing a heat-sink retention module

Alignment triangle

To remove a heat-sink retention module, complete the following steps:

1.Read the safety information that begins on page 5.

2.Turn off the server and all attached devices; then, disconnect all power cords and external cables.

3.Carefully turn the server on its side so that it is lying flat, with the cover facing up.

Attention: Do not allow the server to fall over.

4.Unlock and remove the side cover (see “Removing the left-side cover” on page 157).

5.Remove the power supply or power supplies from the power-supply cage (see “Removing a hot-swap power supply” on page 174).

6.Rotate the power-supply cage to its open position (see “Opening the power-supply cage” on page 158).

7.Remove the air baffle (see “Removing the air baffle” on page 169).

8.Remove the heat sink (see “Removing a microprocessor and heat sink” on page 218).

9.Using a Phillips screwdriver, remove the four screws that secure the heat-sink retention module to the system board; then, lift the heat-sink retention module from the system board.

10.If you are instructed to return the heat-sink retention module, follow all packaging instructions, and use any packaging materials for shipping that are supplied to you.

Chapter 7. Installing optional devices and replacing customer replaceable units 227