H3C UniServer R6900 G5, Руководство пользователя

Страница: 40 / 83

36
To prevent electrostatic discharge, place the removed parts on an antistatic surface or in antistatic
bags.
Prerequisites
Take the following ESD prevention measures:
•
Wear antistatic clothing.
•
Wear an ESD wrist strap and make sure it makes good skin contact and is reliably grounded.
•
Do not wear any conductive objects, such as jewelry or watches.
When you replace a component, examine the slot and connector for damages. Make sure the pins
are not damaged (bent for example) and do not contain any foreign objects.
Removing the system board
1. Power off the server. For more information, see " Powering off the server ."
2. Remove the server from the rack. For more information, see " Removing the server from a rack ."
3. Remove the OCP network adapter.
4. Remove the power supplies.
5. Remove the access panel. For more information, see " Removing the access panel ."
6. Remove all fans.
7. Remove the fan cage. Open the locking levers at the two ends of the fan cage, and then lift the
fan cage out of the chassis.
8. Remove all riser cards installed on the server.
9. Remove the riser card cage.
10. Remove the processor mezzanine board.
11. Disconnect all cables connected to the system board.
12. Remove the cable baffle.
13. Remove all components installed on the system board, for example, the NVMe VROC module.
14. Removed the DIMMs.
15. Remove the processors and heatsinks.
16. Install protective covers over the empty processor sockets. Place a cover on each socket and
press the cover diagonally to secure it.
17. Remove the system board:
a. Loosen the two captive screws on the system board.
b. Hold the system board handle and slide the system board toward the server front. Then, lift
the system board to remove it from the chassis.
Installing the system board
1. Install the system board:
a. Hold the system board handle and slowly place the system board in the chassis. Then, slide
the system board toward the server rear until the connectors (for example, USB connectors
and the Ethernet port) on it are securely seated.
NOTE:
The connectors are securely seated if you cannot use the system board handle to lift the
system board.