Lenovo 7523, 7721, 7715, 7774, 7706, 7719, 7749 Rotate the adapter retainer to the closed position

Figure 48. Installing the adapter card

5.Rotate the adapter retainer to the closed position.

What to do next:

vTo work with another option, go to the appropriate section.

vTo complete the installation, go to “Completing the FRU replacement” on page 155.

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.

Refer to the “Lithium battery notice” in the ThinkCentre Safety and Warranty Guide for information about replacing and disposing of the battery.

134Hardware Maintenance Manual