Replacing CRUs

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. 1

   Remove any media from the drives and turn off all connected devices and the computer. Then, disconnect all power cords from electrical outlets and disconnect all cables that are connected to the computer.

2. 2

   Remove the computer cover.  For details, see Removing the computer cover.

3. 3

   Remove the front bezel.  For details, see Removing the front bezel.

4. 4

   Pivot the drive bay assembly upward.  For details, see Pivoting the drive bay assembly upward and downward.

5. 5

   Replace the coin-cell battery.

   
   
   

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6. 6

   Reinstall the removed parts and computer cover, and then reconnect the cables.  For details, see Completing the parts replacement.

To dispose of the coin-cell battery, refer to the “Lithium coin-cell battery notice” topic in the Safety and Warranty Guide.