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Chapter 3: Maintenance and Component Installation
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Figure 3-10. Installing the Onboard Battery
3.5 Onboard Battery
The system uses non-volatile memory to retain system information when system power is
removed. This memory is powered by a lithium battery on the PCH board.
Replacing the Battery
1. Begin by removing power from the system as described in Section 3-1.
2. Rotate the black thumb screw counterclockwise in order to pull out the lever.
3. Use the lever to pull the PCH module out of the chassis.
4. Push aside the small clamp that covers the edge of the battery. When the battery is
released, lift it out of the holder.
5. To insert a new battery, slide one edge under the lip of the holder with the positive (+)
side facing up. Then push the other side down until the clamp snaps over it.
6. Insert the PCH module back to the chassis and fully close the lever before locking it by
rotating the red black thumb screw clockwise.
Note:
Please handle used batteries carefully. Do not damage the battery in any way; a
damaged battery may release hazardous materials into the environment. Do not discard a
used battery in the garbage or a public landfill. Please comply with the regulations set up by
your local hazardous waste management agency to dispose of your used battery properly.
Warning:
There is a danger of explosion if the onboard battery is installed upside down (which
reverses its polarities). The battery must be replaced only with the same or an equivalent type
recommended by the manufacturer (CR2032).