Lenovo ThinkCentre M81 (English) User Guide - Page 58

Replacing the battery, ThinkCentre Safety and Warranty Guide

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8. Slide the new card reader into the drive bay until it snaps into position. Figure 27. Installing the card reader 9. Reconnect the card reader cable to Front USB connector 2 on the system board. See "Locating parts on the system board" on page 13. 10. Reinstall the front bezel. See "Removing and reinstalling the front bezel" on page 35. 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 67. Replacing the battery Attention: Do not open your computer or attempt any repair before reading and understanding the "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-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. To replace the battery, do the following: 1. Turn off the computer and disconnect all power cords from electrical outlets. 46 ThinkCentre User Guide

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8. Slide the new card reader into the drive bay until it snaps into position.
Figure 27. Installing the card reader
9. Reconnect the card reader cable to Front USB connector 2 on the system board. See “Locating parts
on the system board” on page 13.
10. Reinstall the front bezel. See “Removing and reinstalling the front bezel” on page 35.
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 67.
Replacing the battery
Attention:
Do not open your computer or attempt any repair before reading and understanding the “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-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.
To replace the battery, do the following:
1. Turn off the computer and disconnect all power cords from electrical outlets.
46
ThinkCentre User Guide