H3C UniServer R4900 G3, Руководство пользователя

Страница: 145 / 299

136
Replacing the system board
WARNING!
To avoid bodily injury from hot surfaces, allow the server and its internal modules to cool before
touching them.
Guidelines
To prevent electrostatic discharge, place the removed parts on an antistatic surface or in antistatic
bags.
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 power supplies. For more information, see " Replacing a power supply ."
4.
Remove the access panel. For more information, see " Replacing the access panel ."
5.
Remove the air baffles. For more information, see " Removing air baffles ."
6.
Remove the fan cage. For more information, see " Replacing the fan cage ."
7.
Disconnect all cables connected to the system board.
8.
Remove rear 2LFF or 4LFF drive cage, if any. As shown in Figure 170 , remove the screws that
secure the drive cage, and then lift the drive cage to remove it.
The removal procedure is the same for the rear 2LFF and 4LFF drive cages. This procedure
uses the rear 2LFF drive cage as an example.
Figure 170 Removing the drive cage
9.
Remove the PCIe riser cards and PCIe modules, if any. For more information, see " Replacing a
riser card and a PCIe module ."
10.
Remove the Mezzanine storage controller, if any. For more information, see " Replacing the
Mezzanine storage controller ."