Lenovo ThinkEdge SE455 V3 User Manual page 200

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
e. If applicable, disconnect the RAID flash power module from the extension cable.
Figure 172. Disconnecting the extension cable
Step 2. Loosen the two screws that secure the RAID flash power module holder; then, lift the holder to
remove it from the chassis.
192 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 server from the rack"
223.
"Remove an internal drive" on page
"Remove the internal drive backplane"
"Remove the internal drive cage" on page
to ensure that you
195.
105.
109.