Lenovo ThinkStation P300 (English) User Guide - Small Form Factor - Page 92
Replacing the battery, Safety, Warranty, and Setup Guide
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Figure 19. Installing a PCI card Note: If you are installing a PCI Express x16 graphics card, ensure that the memory slot retaining clips are closed before you install the graphics card. What to do next: • To work with another piece of hardware, go to the appropriate section. • To complete the installation or replacement, go to "Completing the parts replacement" on page 123. Replacing the battery Attention: Do not open your computer or attempt any repair before reading and understanding the "Read this first: Important safety information" on page v. Your computer has a special type of memory that maintains the date, time, and settings for built-in features, such as parallel-connector 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. Refer to the "Lithium coin cell battery notice" in the Safety, Warranty, and Setup Guide for information about replacing and disposing of the battery. To replace the battery, do the following: 1. Turn off the computer and disconnect all power cords from electrical outlets. 2. Remove the computer cover. See "Removing the computer cover" on page 74. 3. Locate the battery. See "Locating parts on the system board" on page 6. 80 ThinkStation P300 User Guide