Replacing The Battery; Installing The New Battery - Lenovo ThinkStation 4155 Hardware Installation And Replacement Manual

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
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
4. Locate the battery. See "Identifying parts on the system board" on page 10.
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
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Hardware Installation and Replacement Guide
What to do next:
v To work with another option, go to the appropriate section.
v To complete the installation, go to Chapter 4, "Completing the parts
replacement," on page 49.
and from the computer.
14.
connect the cables. See Chapter 4, "Completing the parts replacement," on page
49.