Lenovo ThinkEdge SE455 V3 User Manual page 216

CAUTION:
The power-control button on the device and the power switch on the power supply do not turn off the
electrical current supplied to the device. The device also might have more than one power cord. To
remove all electrical current from the device, ensure that all power cords are disconnected from the
power source.
Important: This task must be operated by trained technicians that are certified by Lenovo Service. Do no
attempt to remove or install it without proper training and qualification.
Attention:
• Read "Installation Guidelines" on page 39
work safely.
• If applicable, remove the security bezel. See
• Power off the server and peripheral devices and disconnect the power cords and all external cables. See
"Power off the server" on page
• If the server is installed in a rack, remove the server from the rack. See
on page 49.
• Prevent exposure to static electricity, which might lead to system halt and loss of data, by keeping static-
sensitive components in their static-protective packages until installation, and handling these devices with
an electrostatic-discharge wrist strap or other grounding system.
• Touch the static-protective package that contains the component to any unpainted metal surface on the
server; then, remove it from the package and place it on a static-protective surface.
• After replacing the firmware and RoT security module, update the firmware to the specific version
supported by the server. Make sure that you have the required firmware or a copy of the pre-existing
firmware before you proceed.
Procedure
Step 1. Make preparation for this task.
a. Perform OneCLI commands to back up the UEFI settings. See
onecli/onecli_r_save_command
b. Perform both OneCLI commands and XCC actions to back up the XCC settings. See
pubs.lenovo.com/lxce-onecli/onecli_r_save_command
c_backupthexcc.html
c. Remove the top cover. See
d. Remove all the PCIe assemblies. If the configuration comes with PCIe riser 2 and internal
drives, remove all the internal drives, and lift the internal drive backplane before removing PCIe
riser 2. See
Step 2. Remove the firmware and RoT security module.
208 ThinkEdge SE455 V3 User Guide
and "Safety inspection checklist" on page 40
"Remove the security bezel" on page
48.
.
.
"Remove the top cover" on page
"Remove the PCIe riser assembly" on page
195.
"Remove the server from the rack"
https://pubs.lenovo.com/lxce-
and
https://pubs.lenovo.com/xcc2/NN1ia_
223.
141.
to ensure that you
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