Troubleshooting guide

Cisco UCS B200 M3 Blade Server Installation and Service Note

OL-26624-01

Working Inside the Blade Server

Installing a Motherboard CMOS Battery

This server supports the CR2032 CMOS battery (N20-MBLIBATT).

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

To install or replace a motherboard complementary metal-oxide semiconductor (CMOS) battery, follow

these steps:

Step 1 Remove a motherboard CMOS battery:

a. Power off the blade, remove it from the chassis, and remove the top cover as described in the

“Removing a Blade Server Cover” section on page 15.

b. Press the battery socket retaining clip toward the chassis wall (see Figure 11).

c. Lift the battery from the socket. Use needle-nose pliers to grasp the battery if there is not enough

clearance for your fingers.

Step 2 Install a motherboard CMOS battery:

a. Press the battery socket retaining clip toward the chassis wall.

b. Insert the new battery into the socket with the battery’s negative (–) marking toward the chassis wall.

Ensure that the retaining clip clicks over the top of the battery.

c. Replace the top cover.

d. Replace the server in the chassis and power on the blade by pressing the Power button.