Replacing The Power Supply Assembly - Lenovo ThinkCentre M81 User Manual

2. Remove the computer cover. See "Removing the computer cover" on page 34.
3. Locate the battery. See "Locating parts on the system board" on page 13.
4. Remove the old battery.
Figure 28. Removing the old battery
5. Install a new battery.
Figure 29. Installing a new battery
6. Reinstall the computer cover and connect the cables. See "Completing the parts replacement" on
page 67.
Note: When the computer is turned on for the first time after replacing the battery, an error message
might be displayed. This is normal after replacing the battery.
7. Turn on the computer and all attached devices.
8. Use the Setup Utility program to set the date, time, and any passwords. See Chapter 7 "Using the Setup
Utility program" on page 77.
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 power supply assembly

Attention:
Do not open your computer or attempt any repair before reading and understanding the "Important safety information"
on page v.
This section provides instructions on how to replace the power supply assembly.
Although there are no moving parts in your computer after the power cord has been disconnected, the
following warnings are required for your safety and proper Underwriters Laboratories (UL) certification.
CAUTION:
.
Chapter 5 Installing or replacing hardware
47