Lenovo System x3550 M5, Инструкция по установке и обслуживанию

Страница: 289 / 1144

screws on one side first, rather than rotating. Rotate each screw one full rotation at a time.
Repeat this process until the screws are tightened.
Step 10. Reinstall the air baffle (see “Replacing the air baffle” on page 122).
Step 11. Reinstall the cover (see “Replacing the cover” on page 120).
Step 12. Slide the server into the rack.
Step 13. Reconnect the power cords and any cables that you removed.
Step 14. Turn on the peripheral devices and the server.
Thermal grease
The thermal grease must be replaced whenever the heat sink has been removed from the top of the
microprocessor and is going to be reused or when debris is found in the grease.
When you are installing the heat sink on the same microprocessor that it was removed from, make sure
that the following requirements are met:
• The thermal grease on the heat sink and microprocessor is not contaminated.
• Additional thermal grease is not added to the existing thermal grease on the heat sink and microprocessor.
Notes:
• Read the safety information that begins on “Safety” on page v.
• Read the “Installation guidelines” on page 116.
• Read “Handling static-sensitive devices” on page 118.
To replace damaged or contaminated thermal grease on the microprocessor and heat sink, complete the
following steps:
Step 1. Place the heat sink on a clean work surface.
Step 2. Remove the cleaning pad from its package and unfold it completely.
Step 3. Use the cleaning pad to wipe the thermal grease from the bottom of the heat sink.
Note: Make sure that all of the thermal grease is removed.
Step 4. Use a clean area of the cleaning pad to wipe the thermal grease from the microprocessor; then,
dispose of the cleaning pad after all of the thermal grease is removed.
Chapter 5
.
Removing and replacing components
275