Replacing The Coin-Cell Battery - Lenovo ThinkCentre M920t User Manual And Hardware Maintenance Manual

2. Remove the computer cover. See "Removing the computer cover" on page 17.
3. Remove the front bezel. See "Replacing the front bezel" on page 18.
4. Pivot the drive bay assembly upward. See "Pivoting the drive bay assembly upward and downward" on
page 19.
5. Replace the memory module.
Figure 62. Removing the memory module
Figure 63. Installing the memory module
6. Reinstall the removed parts. To complete the replacement, see "Completing the parts replacement" on
page 68.

Replacing the coin-cell battery

Attention: Do not open your computer or attempt any repairs before reading the Important Product
Information Guide.
Your computer has a special type of memory that maintains the date, time, and settings for built-in features,
such as parallel connector assignments (configurations). A coin-cell battery keeps this information active
when you turn off the computer.
The coin-cell battery normally requires no charging or maintenance throughout its life; however, no coin-cell
battery lasts forever. If the coin-cell battery fails, the date, time, and configuration information (including
passwords) are lost. An error message is displayed when you turn on the computer.
To replace the coin-cell battery,
1. Remove any media from the drives and turn off all connected devices and the computer. Disconnect all
power cords from electrical outlets and disconnect all cables from the computer.
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M920t User Guide and Hardware Maintenance Manual