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7. Remove the two screws 1 that secure the card reader, and then lift the card reader out of the computer.
Figure 32. Removing the card reader
8. To reinstall the card reader, align the screw holes in the new card reader with those in the computer, and
then install the two screws to secure the card reader.
9. Connect the card reader cable to the new card reader.
10. Reinstall the system board shield. See “Removing and reinstalling the system board shield” on page 83.
11. Go to “Completing the parts replacement” on page 108.
Replacing the battery
Attention: Do not open your computer or attempt any repair before reading and understanding the
“Important safety information” on page 1
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 (conguration). A battery keeps the information active when you turn
off the computer.
The battery normally requires no charging or maintenance throughout its life. However, if the battery fails,
the date, time, and conguration information (including passwords) are lost. An error message will be
displayed when you turn on the computer.
Refer to “Lithium battery notice” in the ThinkCentre Safety, Warranty, and Setup Guide for information about
replacing and disposing of the battery.
To replace the battery, do the following:
1. Remove all media from the drives and turn off all attached devices and the computer. Then, disconnect
all power cords from electrical outlets and disconnect all cables that are connected to the computer.
Chapter 9. Replacing FRUs 95