Replacing The Memory Module - Lenovo ThinkCentre M600 User Manual

3. Remove the screws
board in the following sequence:
a. Partially remove screw
b. Partially remove screw
Note: Carefully remove the four screws
the system board. The four screws cannot be removed from the heat sink.
Figure 43. Removing the heat sink
4. Lift the failing heat sink off the system board.
Notes:
• You might have to gently twist the heat sink to free it from the microprocessor.
• Do not touch the thermal grease while handling the heat sink.
5. Position the new heat sink on the system board so that the four screws
corresponding mounting studs on the system board.
6. Tighten the four screws
over-tighten the screws.
a. Partially tighten screw
b. Partially tighten screw
7. Install the screws 1
What to do next:
• To work with another piece of hardware, go to the appropriate section.
• To complete the installation or replacement, go to "Completing the parts replacement" on page 93.

Replacing the memory module

Attention: Do not open your computer or attempt any repair before reading and understanding the "Read
this first: Important safety information" on page iii.
To replace the memory module, do the following:
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ThinkCentre M600 User Guide
1 and 2 , and then loosen the four screws that secure the heat sink to the system
3 , fully remove screw
5 , fully remove screw
3 to
3 to 6 to secure the new heat sink in the following sequence. Do not
3 , fully tighten screw
5 , fully tighten screw
and 2 .
4 , and then fully remove screw
6 , and then fully remove screw
6 from the system board to avoid any possible damage to
4 , and then fully tighten screw
6 , and then fully tighten screw
3 .
5 .
3 6
to align with the
3 .
5 .