Figure 92. Cable routing – 16 x 2.5 inch hard drive backplane with adapter PERC
1
backplane
2
backplane expander
3
backplane power cable
4
backplane signal cable
5
system board
6
adapter PERC
7
SAS cable
System battery
The system battery is used for low-level system functions such as powering the real-time and date settings of the system.
Replacing the system battery
Prerequisites
WARNING:
There is a danger of a new battery exploding if it is incorrectly installed. Replace the battery only with the same or
equivalent type recommended by the manufacturer. For more information, see the safety information that shipped with your
system.
1
Follow the safety guidelines listed in
2
Follow the procedure listed in
Before working inside your system
.
3
If applicable, close the PCIe card holder latch on the air shroud to release the full length card.
4
If applicable, disconnect the power or data cables from expansion card(s).
5
Remove the expansion card riser 1A.
Steps
1
Locate the battery socket. For more information, see the System board jumpers and connectors section.
142
Dell EMC PowerEdge R740 Installation and Service Manual
Installing and removing system components