Replacing The Rtc Battery - Cisco APIC M3 Installation And Service Manual

Maintaining the Server

Replacing the RTC Battery

Warning There is danger of explosion if the battery is replaced incorrectly. Replace the battery only with the same or
equivalent type recommended by the manufacturer. Dispose of used batteries according to the manufacturer's
instructions.
[Statement 1015]
The real-time clock (RTC) battery retains system settings when the server is disconnected from power. The
battery type is CR2032. Cisco supports the industry-standard CR2032 battery, which can be ordered from
Cisco (PID N20-MBLIBATT) or purchased from most electronic stores.
Step 1 Remove the RTC battery:
a) Shut down and remove power from the server as described in
on page 29.
b) Slide the server out the front of the rack far enough so that you can remove the top cover. You might have to detach
cables from the rear panel to provide clearance.
If you cannot safely view and access the component, remove the server from the rack.
Caution
c) Remove the top cover from the server as described in
d) Locate the RTC battery. The vertical socket is directly in front of PCIe riser 2.
e) Remove the battery from the socket on the motherboard. Gently pry the securing clip on one side open to provide
clearance, then lift straight up on the battery.
Step 2 Install a new RTC battery:
a) Insert the battery into its holder and press down until it clicks in place under the clip.
The flat, positive side of the battery marked "3V+" should face left as you face the server front.
Note
b) Replace the top cover to the server.
c) Replace the server in the rack, replace cables, and then fully power on the server by pressing the Power button.
Shutting Down and Removing Power From the Server,
Removing the Server Top Cover, on page
Cisco APIC M3/L3 Server Installation and Service Guide
Replacing the RTC Battery
30.
65