Dell EMC VxFlex Ready Node R840, Manual

Page: 147 / 218

Replacing the system battery
The system battery is used for low-level system functions, such as powering the
system's real-time and date settings. To replace the system battery, perform the
following steps in the order in which they are listed.
Note
The iDRAC monitors system board CMOS battery voltage on a running system every
15 minutes and displays a warning if the battery is low. Additionally, the BIOS displays
an error message during system startup if the system battery is low.
Note
Before starting this FRU procedure, familiarize yourself with the topics in Important
information before performing a FRU procedure on page 56.
CAUTION
This FRU procedure requires you to perform mandatory software tasks in VxFlex
OS, as described in the
VxFlex Ready Node Field Replacement Unit Software Guide .
You will be referred to these mandatory software tasks in the following checklist.
Check
List Task Topic
Perform mandatory software tasks to prepare the node for part replacement:
☐ 1 Gracefully shut down the node. See "Gracefully shut down the node" in
the VxFlex Ready Node Field Replacement
Unit Software Guide
.
Return to this guide for instructions on replacing the system component:
☐
2 Remove the bezel. See Remove the front bezel on page
166.
☐
3 Disconnect the power cords and I/O
cables. See Disconnect the power cords and I/O
cables on page 164.
☐
4 Extend the system from the cabinet. See Extend the system from the cabinet
on page 164.
☐
5 Remove the system cover. See Remove the system cover on page
173.
☐
6 If applicable, disconnect the power
cables from the PCIe card riser. See System board connectors on page
182.
☐ 7 If installed, remove the expansion card
riser. See Remove the expansion card risers on
page 103.
☐ 8 If installed, remove the PCIe expansion
cards. See Remove the expansion card from the
expansion card riser on page 101.
☐ 9 Replace the system battery. See Replace the system battery on page
148.
Hardware FRU procedures
Replacing the system battery 147