Lenovo ThinkCentre M73, User Manual

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8. install the new thermal module into the chassis as shown. Ensure that the four screws on the new
thermal module are aligned with corresponding holes in the system board.
Figure 69. Positioning the new thermal module
9. Follow the clockwise sequence of 2 , 4 , 1 , and 3 to install the four screws to secure the new thermal
module. Do not over-tighten the screws.
10. Reinstall the cover presence switch. See “Replacing the cover presence switch” on page 71.
11. Reinstall the internal speaker. See “Replacing the internal speaker” on page 69.
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 80.
Replacing the microprocessor
Attention:
Do not open your computer or attempt any repair before reading and understanding the “Important safety information”
on page v.
This section provides instructions on how to replace the microprocessor.
CAUTION:
The thermal module might be very hot. Before you open the computer cover, turn off the computer
and wait several minutes until the computer is cool.
To replace the microprocessor, do the following:
1. Turn off the computer and disconnect all power cords from electrical outlets.
2. Remove the computer cover. See “Removing the computer cover” on page 55.
3. Remove the thermal module. See “Replacing the thermal module” on page 75.
Note: Place the thermal module on its side so that the thermal grease on the bottom of it does not
get in contact with anything.
Chapter 5
.
Installing or replacing hardware
77