Lenovo ThinkServer TD350 User Manual And Hardware Maintenance Manual page 185

7. Lay aside the old heat sink. Touch the static-protective package that contains the new heat sink to any
unpainted surface on the outside of the server. Then, remove the new heat sink from the package and
remove the protective cover from the heat sink.
Notes:
• When handling the heat sink, do not touch the thermal grease on the bottom of it.
• Before installing the new heat sink, use the cleaning pad that comes with the new heat sink to wipe
the thermal grease from the top of the microprocessor. Dispose of the cleaning pad after all of the
thermal grease is removed from the microprocessor.
8. Place the new heat sink on the system board so that the four screws on the new heat sink are aligned
with the corresponding mounting studs on the system board. Note the orientation of the new heat sink.
Ensure that the arrow on the new heat sink points to the rear of the server. See "Server components"
on page 25.
9. Install the four screws to secure the new heat sink on the system board. It is recommended that you
carefully install the four screws using the following method to avoid any possible damage to the system
board.
a. Partially tighten screw
it. Do not over-tighten the screws.
b. Partially tighten screw
it. Do not over-tighten the screws.
Figure 139. Installing the screws to secure the heat sink
10. If you are instructed to return the old heat sink, follow all packaging instructions and use any packaging
materials that are supplied to you for shipping.
What to do next:
• To work with another piece of hardware, go to the appropriate section.
• To complete the replacement, go to "Completing the parts replacement" on page 180.
1 , then firmly tighten screw
2 , then firmly tighten screw
3 , and then return to screw
4 , and then return to screw
Chapter 6
1 and firmly tighten
2 and firmly tighten
171
.
Replacing hardware