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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:
1. Remove the computer cover. See “Removing the computer cover” on page 73.
2. Locate the battery. See “Locating parts on the system board” on page 76.
3. Remove the old battery.
Figure 15. Removing the old battery
4. Install a new battery.
Figure 16. Installing a new battery
5. Replace the computer cover and connect the cables. See “Completing the FRU replacement” on
page 103.
Note: When the computer is turned on for the rst time after battery replacement, an error message
might be displayed. This is normal after replacing the battery.
6. Turn on the computer and all attached devices.
7. Use the Setup Utility program to set the date and time and any passwords, see Chapter 6 “Using
the Setup Utility” on page 43.
Replacing an adapter card
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 an adapter card.
To replace an adapter card:
1. Remove the computer cover. See “Removing the computer cover” on page 73.
Chapter 8. Replacing FRUs (Machine Types: 3063, 3231, 3285, 4084, 4085, 4086, 4087, 6138, 6209, 6239, 6302, 7188, 7244,
7347, 7355, 7358, 7373, 7484, 7571, 7628, 7635, 7639, 8494, 8854, 9728, 9960, and 9965.) 87