Lenovo ThinkCentre M58p Hardware Maintenance Manual - Page 94

1. Remove the microprocessor from the microprocessor socket. See "Replacing the microprocessor" on page 81. 2. Close the microprocessor retainer and lock it into position with the small handle. 3. Insert the tabs 1 of the socket cover into the hinged side of the socket, and then press the other side of the socket cover downward until the tabs 2 snap into position. Figure 13. Tabs on the microprocessor socket cover (bottom view) Figure 14. Installing the microprocessor socket cover 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 parallel-port assignments (configuration). A battery keeps this 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. 86 ThinkCentre Hardware Maintenance Manual