Lenovo ThinkServer RD340 (English) User Guide - Page 175

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. DANGER Danger of explosion if battery is incorrectly replaced. When replacing the lithium coin cell battery, use only the same or an equivalent type that is recommended by the manufacturer. The battery contains lithium and can explode if not properly used, handled, or disposed of. Do not: • Throw or immerse into water • Heat to more than 100°C (212°F) • Repair or disassemble Dispose of the battery as required by local ordinances or regulations. The following statement applies to users in the state of California, U.S.A. California Perchlorate Information: Products containing CR (manganese dioxide) lithium coin cell batteries may contain perchlorate. Perchlorate Material - special handling may apply, See http://www.dtsc.ca.gov/hazardouswaste/perchlorate 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 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. If the server is installed in a rack cabinet, remove the server from the rack cabinet and place it on a flat, clean, and static-protective surface. See the Rack Installation Instructions that comes with the server. 3. Remove the server cover. See "Removing the server cover" on page 75. 4. Locate the coin-cell battery. See "System board components" on page 38. Note: If there is any PCI Express card installed on the riser card assembly 1, it might block your access to the coin-cell battery. In this case, you need to remove the cooling shroud and then carefully lift the riser card assembly 1 up so that you can access the coin-cell battery. You do not need to disconnect any cables from the riser card assembly 1 or completely remove the riser card assembly 1. Chapter 6. Installing, removing, or replacing hardware 163