Lenovo ThinkServer RD350G User Manual And Hardware Maintenance Manual page 150

Your server has a special type of memory that maintains the date, time, and configuration information for
built-in features. The coin-cell battery keeps the information active when you turn off the server. The coin-
cell battery normally requires no charging or maintenance throughout its life; however, no battery lasts
forever. If the coin-cell battery fails, the date, time, and configuration information, including passwords, are
lost and an error message is displayed when you turn on the server.
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Before you begin, print all the related instructions or ensure that you can view the PDF version on another
computer for reference.
To replace the coin-cell battery, do the following:
Note: After you replace the coin-cell battery, you must reset passwords, reset system date and time, and
reconfigure the server.
1. Remove all external media from the drives and turn off all attached devices and the server. Then,
disconnect all power cords from electrical outlets and disconnect all cables that are connected to
the server.
2. Prepare your server. See "Removing or extending the server from the rack cabinet" on page 57.
3. Remove the server cover. See "Removing the server cover" on page 57.
4. Locate the coin-cell battery. See "System board components" on page 33.
Note: If there is any PCIe card installed on the riser card assembly, it might block your access to the
coin-cell battery. In this case, you need to carefully lift the riser card assembly up so that you can
access the coin-cell battery. You do not need to disconnect any cables from the riser card assembly
or completely remove the riser card assembly.
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ThinkServer RD350G User Guide and Hardware Maintenance Manual
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