Remove the CMOS battery (CR2032)

Use this information to remove the CMOS battery (CR2032).

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.

S004

CAUTION

When replacing the lithium battery, use only Lenovo specified part number or an equivalent type battery recommended by the manufacturer. If your system has a module containing a lithium battery, replace it only with the same module type made by the same manufacturer. The battery contains lithium and can explode if not properly used, handled, or disposed of.

Do not:

• Throw or immerse into water
• Heat to more than 100°C (212°F)
• Repair or disassemble

Dispose of the battery as required by local ordinances or regulations.

S005

CAUTION

The battery is a lithium ion battery. To avoid possible explosion, do not burn the battery. Exchange it only with the approved part. Recycle or discard the battery as instructed by local regulations.

Attention

• Read Installation guidelines to ensure that you work safely.

• Power off the server and disconnect all power cords for this task.

• Prevent exposure to static electricity, which might lead to system halt and loss of data, by keeping static-sensitive components in their static-protective packages until installation, and handling these devices with an electrostatic-discharge wrist strap or other grounding system.

• If the server is in a rack, remove it from the rack.

• If foot stands are installed on the server, rotate them inwards and lay the server on its side for easier operation.

Procedure

1. Make preparations for this task.
   1. Remove the server cover. See Remove the server cover.
   2. Remove all the flash power modules. See Remove a flash power module.
   3. Remove the air baffle. See Remove the air baffle.
2. Locate the CMOS battery on the system board. See System board components.
3. Remove the CMOS battery.
   Attention

   Do not apply excessive force on the CMOS battery. Failing to remove the CMOS battery properly might damage the socket on the system board. Any damage to the socket might require replacing the system board.

   Figure 1. Removing the CMOS battery
   
   
   1. Press on the nub on the side of the CMOS battery.
   2. Pivot the battery away from the socket to remove it.