Lenovo M58e Hardware Maintenance Manual - Page 124

Replacing the CMOS 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 remove and replace the CMOS battery. If the CMOS battery fails, the date, time, and configuration information (including passwords) are lost. An error message is displayed when you turn on the computer. Important Refer to "Safety notices (multi-lingual translations)" on page 7 for information about replacing and disposing of the battery. CAUTION: When replacing the lithium battery, use only Part Number 33F8354 or an equivalent type battery recommended by the manufacturer. 1. Remove the computer cover. See "Removing the computer cover" on page 85. 2. Locate the battery. See the system board illustration for your machine type at "System board connectors" on page 84. 3. You might have to remove any PCI adapters that impede access to the battery. 4. Remove the old battery. 5. Install the new battery. 6. Replace any PCI adapters that were removed. Note: When the computer is turned on for the first time after battery replacement, an error message might be displayed. This is normal after replacing the battery. 7. Go to "Completing the FRU replacement" on page 120. 118 Hardware Maintenance Manual