Lenovo 8013, Hardware Maintenance Manual, Page: 100 / 582

Replacing 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 7 for information
about replacing and disposing of the battery.
1. Remove the cover. See “Removing the cover” on page 87.
2. Locate the battery. See the system board illustration for your machine type at
“Identifying parts on the system board” on page 89.
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 124.
Replacing the power supply
Attention
Never remove the cover on a power supply or any part that has the
following label attached.
Hazardous voltage, current, and energy levels are present inside any
component that has this label attached. There are no servicable parts inside
these components.
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Hardware Maintenance Manual