Lenovo ThinkEdge SE455 V3 User Manual page 197

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.
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.
Procedure
Step 1. Make preparation for this task.
a. Remove the top cover. See
b. If applicable, remove all the internal drives. See
c. If applicable, remove the internal drive backplane. See
on page 107.
d. If applicable, remove internal drive cage. See
Step 2. Remove the RAID flash power module from the holder.
a. Pull back the retention clips; meanwhile, hold the RAID flash power module, and pivot the
cable side of the module to disengage it from the holder.
b. Remove the RAID flash power module from the holder.
Note: Be careful not to grasp the cables of the RAID flash power module.
Figure 168. Removing the RAID flash power module
Step 3. Disconnect the RAID flash power module from the extension cable.
and "Safety inspection checklist" on page 40
"Remove the security bezel" on page
48.
"Remove the top cover" on page
"Remove the server from the rack"
223.
"Remove an internal drive" on page
"Remove the internal drive backplane"
"Remove the internal drive cage" on page
.
Chapter 5 Hardware replacement procedures
to ensure that you
195.
105.
109.
189