Lenovo ThinkStation D20 - Manual (Page 28)

• To complete the installation, go to Chapter 4 “Completing the parts replacement” on page 45.
Replacing the battery
Your computer has a special type of memory that maintains the date, time, and settings for built-in features,
such as serial-port assignments (configuration). A battery keeps this information active when you turn
off the computer.
The battery normally requires no charging or maintenance throughout its life; however, no battery lasts
forever. If the battery fails, the date, time, and configuration information (including passwords) are lost. An
error message is displayed when you turn on the computer.
Refer to the "Lithium battery notice" in the ThinkStation Safety and Warranty Guide for information about
replacing and disposing of the battery.
To replace the battery:
1. Turn off the computer and disconnect the power cord from the electrical outlet and from the computer.
2. Remove the computer cover. See “Removing the computer cover” on page 11.
3. Access the system board. See “Accessing system board components” on page 13.
4. Locate the battery. See “Identifying parts on the system board” on page 8.
5. Remove the old battery.
Figure 20. Removing the old battery
6. Install the new battery.
Figure 21. Installing the new battery
7. Reinstall any adapter card that was removed. Replace the computer cover and connect the cables.
See Chapter 4 “Completing the parts replacement” on page 45.
Note: When the computer is turned on for the first time after replacing the battery, an error message
might be displayed. This is normal after replacing the battery.
8. Turn on the computer and all attached devices.
9. Use the Setup Utility program to set the date and time and any passwords. See "Using the Setup
Utility" in the ThinkStation User Guide.
22 ThinkStation Hardware Installation and Replacement Guide