Lenovo ThinkCentre M58 Hardware Maintenance Manual - Page 78
Replacing the battery, ThinkCentre Safety and Warranty Guide
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Replacing the battery Attention Do not open your computer or attempt any repair before reading and understanding the "Important safety information" in the ThinkCentre Safety and Warranty Guide that came with your computer. To obtain a copy of the ThinkCentre Safety and Warranty Guide, go to: http://www.lenovo.com/support This section provides instructions on how to replace the battery. Your computer has a special type of memory that maintains the date, time, and settings for built-in features, such as the parallel-port assignments (configuration). A battery keeps these 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: 1. Open the computer cover. See "Opening the computer cover" on page 71. 2. Locate the battery. See "Locating parts on the system board" on page 70. 3. Remove the old battery. Figure 6. Removing the old battery 4. Install a new battery by pushing the new battery straight down until it snaps into position. Figure 7. Installing a new battery 5. Reconnect all the cables to the system board and close the computer. See "Completing the FRU replacement" on page 89. Note: When the computer is turned on for the first time after replacing the battery, an error message might be displayed. This is normal after replacing the battery. 72 ThinkCentre Hardware Maintenance Manual