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10. Go to “Completing the FRU replacement” on page 95.
Replacing the CMOS 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 remove and replace the CMOS battery.
If the CMOS battery fails, the date, time, and configuration information (including passwords) are lost. An
error message is displayed when you turn on the computer.
Important
Refer to “Safety notices (multi-lingual translations)” on page 6 for information about replacing and disposing
of the battery.
CAUTION:
When replacing the lithium battery, use only Part Number 45C1566 or an equivalent type battery
recommended by the manufacturer.
1. Remove the computer cover. See “Removing the computer cover” on page 69.
2. Locate the battery. See the system board illustration for your machine type at “System board
connectors” on page 68.
3. You might have to remove any PCI adapters that impede access to the battery.
4. Remove the old battery.
5. Install the new battery.
6. Replace any PCI adapters that were removed.
Note:
When the computer is turned on for the first time after battery replacement, an error message
might be displayed. This is normal after replacing the battery.
7. Go to “Completing the FRU replacement” on page 95.
94
ThinkCentre Hardware Maintenance Manual
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