Lenovo ThinkCentre 0401, Hardware Maintenance Manual, Page: 129 / 170

3. Place a soft, clean towel or cloth on the desk or surface. Hold the sides of
your computer and gently lay it down so that the screen is against the surface
and the cover is facing up.
4.
Remove the computer cover. See “Removing the computer cover” on page 83.
5. Remove the hard disk drive. See “Replacing the hard disk drive” on page 88.
6. Remove the optical drive. See “Removing the optical drive” on page 91.
7. Open the system board shielding. See “Opening the system board shielding”
on page 84.
8. Remove the rear I/O assembly. See “Removing the rear I/O assembly” on
page 108.
9.
Remove the power supply assembly. See “Removing the power supply
assembly” on page 119.
10. Remove the microprocessor and heat sink assembly. See “Removing the
microprocessor and heat sink assembly” on page 101.
11.
Remove the microprocessor fan assembly. See “Removing the microprocessor
fan assembly” on page 96.
12. Remove the memory modules. See “Removing the memory module” on page
93.
13. Remove the system board. See “Removing the system board” on page 105.
14. Remove all 11 screws that secure the main bracket to the front bezel.
Chapter 8. Replacing FRUs
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