Replacing The Battery - Lenovo ThinkCentre Edge 72 Hardware Maintenance Manual

7. Pivot the card latch to the closed position to secure the PCI card.
Figure 16. Installing a PCI card
8. Reinstall the screw to secure the PCI card latch in place.
9. To complete the installation or replacement, go to "Completing the parts replacement" on page 112.

Replacing the battery

Attention:
Do not open your computer or attempt any repair before reading and understanding the "Important safety information"
in the ThinkCentre User Guide. To obtain a copy of the ThinkCentre User Guide, go to:
http://www.lenovo.com/ThinkCentreUserGuides
Your computer has a special type of memory that maintains the date, time, and settings for built-in features,
such as parallel-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 ThinkCentre Safety and Warranty Guide for information about
replacing and disposing of the battery.
To replace the battery, do the following:
1. Turn off the computer and disconnect all power cords from electrical outlets.
2. Remove the computer cover. See "Removing the computer cover" on page 82.
3. Locate the battery. See "Locating parts on the system board" on page 72.
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Chapter 9 Replacing FRUs (Machine Types: 3484, 3485, and 3492)
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