Lenovo 5354 Bedienungsanleitung PDF herunterladen (Seite 27)

What to do next:

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

v To complete the replacement, go to “Completing the parts replacement” on

page 24.

Replacing the heat sink

Attention

Do not open your computer or attempt any repair before reading and understanding the

“Important safety information” in the ThinkCentre Safety and Warranty Guide that came with

your computer. To obtain a copy of the ThinkCentre Safety and Warranty Guide,goto:

http://www.lenovo.com/support

This section provides instructions on how to replace the heat sink.

CAUTION:

The heat sink might be very hot. Turn off the computer and wait three to five

minutes to let the computer cool before removing the computer cover.

To replace the heat sink, do the following:

1. Remove the computer cover. See “Removing the computer cover” on page 12.

2. Locate the heat sink. See “Locating components” on page 9.

3. Remove the four screws that secure the heat sink. Then, lift the heat sink off

the system board.

Notes:

a. Carefully remove the four screws from the system board to avoid any

possible damage. The four screws cannot be removed from the heat sink.

b. You might have to gently twist the heat sink to free it from the

microprocessor.

c. When handling the heat sink, do not touch the thermal grease on the

bottom of the heat sink.

Figure 16. Removing the heat sink

Chapter 2. Installing or replacing hardware 19

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Lenovo 5354 Bedienungsanleitung Seite 27