System Board Replacement; Remove The System Board Assembly - Lenovo ThinkSystem SE350 Maintenance Manual

sudo reboot
• APN:
– When APN setting is required, use the following command lines (using 1234 as an example of
APN):
sudo uci set network.lte_wan.apn='1234'
sudo uci commit network
sudo reboot
– When the APN setting is not required, use the following command lines:
sudo uci set network.lte_wan.apn='internet'
sudo uci commit network
sudo reboot
Note: For more information about configuring the LTE settings, see Configure LTE setting under the
"Embedded switch CLI for wireless LOM Package configuration" section in the ThinkSystem SE350
Setup Guide.

System board replacement

Use this procedure to remove or install the system board.

Remove the system board assembly

Use this information to remove the system board assembly.
Attention: Removing and installing this component requires trained technicians. Do no attempt to remove or
install it without proper training.
Before removing the system board assembly:
1. Read the following sections to ensure that you work safely.
• "Safety" on page iii
• "Installation Guidelines" on page 37
2. Record all system configuration information, such as Lenovo XClarity Controller IP addresses, vital
product data, and the machine type, model number, serial number, Universally Unique Identifier, and
asset tag of the server.
3. If the server has SED installed, maintain a backup of SED AK. See Backup the Self Encryption Drive
Authentication Key (SED AK) in Setup Guide for more details.
4. Use the Lenovo XClarity Essentials OneCLI to save the system configuration to external media.
5. Log on XCC Web GUI and backup config to external media.
6. Download the XCC Service Data to external media.
7. Turn off the server. Disconnect the power cords and all external cables (see
page 16).
8. Remove the node from the enclosure if needed (see
9. Remove the top cover (see
ThinkSystem SE350 and ThinkSystem SE350 Enclosures Maintenance Manual
124
"Remove the top cover" on page
"Remove a node" on page
140).
"Power off the server" on
98).