Fan Module Replacement - Lenovo ThinkEdge SE455 V3 User Manual

Figure 59. Installing the CMOS battery
After this task is completed
1. Complete the parts replacement. See
2. If 3V security battery (CR2032) is replaced, the system enters System Lockdown Mode and needs to be
activated or unlocked. See
3. Power on the server; then, reset date, time, and all the passwords.

Fan module replacement

Follow instructions in this section to remove and install the fan modules.
Remove a fan module
Follow instructions in this section to remove a fan module.
About this task
S002
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.
"Complete the parts replacement" on page
"Activate or unlock the system" on page
and "Safety inspection checklist" on page 40
"Remove the security bezel" on page
48.
225.
255.
195.
"Remove the server from the rack"
.
Chapter 5 Hardware replacement procedures
to ensure that you
89