Caution!

There is a danger of explosion if the battery is incorrectly replaced. Replace the battery only with the same or equivalent type recommended by the manufacturer. Dispose of used batteries according to the manufacturer’s instructions and local laws.

Important!

If the CMOS has become corrupted, the system may turn on when power is first applied. Because removing the battery removes the power source that supports the CMOS memory, the system will turn on when power is applied after the new battery is installed.

It may be necessary to reconfigure your system after installing some expansion cards. You may also need to install software that came with the card. Check the card documentation for additional information.

Replacing the lithium battery

The lithium battery provides power for the system real-time clock and CMOS RAM, which holds the system configuration information.

To Replace the Battery

1.Restart the computer and start the BIOS Setup program by pressing F1 when you are prompted to do so.

2.Write down the CMOS values from the Main Setup screen so you can re-enter them after you replace the battery. (For more information about the setup program, see “Using the BIOS Setup Utility” on page 54.)

3.Turn off the system and disconnect the power cord.

4.Open the case, observing the ESD precautions in “Static electricity precautions” on page 2.

5.Locate the battery on the system board. The battery is circular and has the positive pole mark (+) on the top, see Figure 7 on page 12.

6.Gently pull the battery from its socket and press the new battery in the socket with the positive pole up. Be sure you have pressed the battery down far enough for it to touch the base of the socket.

7.Close the case, as described in “Closing the system” on page 7.8.Reconnect the power cord and turn on the system.

9.Enter the BIOS Setup program and verify that the system configuration is correct using the data you recorded in Step 2.

If the CMOS data is not correct, change the information in the Setup screens as necessary.

48 Maintaining and Troubleshooting the Gateway ALR 8300 Server