12Press <F2> to enter the System Setup program, and check that the processor information matches the new system configuration. See "System Setup Options" on page 43.

13Run the system diagnostics to verify that the new processor operates correctly.

See "Running the System Diagnostics" on page 149 for information about running the diagnostics and troubleshooting processor problems.

System Battery

The system battery is a 3.0-volt (V), coin-cell battery.

Replacing the System Battery

CAUTION: Only trained service technicians are authorized to remove the system cover and access any of the components inside the system. See your Product Information Guide for complete information about safety precautions, working inside the computer, and protecting against electrostatic discharge.

CAUTION: There is a danger of a new battery exploding if it is incorrectly installed. Replace the battery only with the same or equivalent type recommended by the manufacturer. Discard used batteries according to the manufacturer's instructions. See your System Information Guide for additional information.

1Remove power from the system, including any attached peripherals, and disconnect the system from the electrical outlet.

2Open the system. See "Removing the Top Cover" on page 60.

3Remove memory risers 3 and 4 from the system.

4Locate the battery socket. See "System Board Connectors" on page 154.

NOTICE: If you pry the battery out of its socket with a blunt object, be careful not to touch the system board with the object. Ensure that the object is inserted between the battery and the socket before you attempt to pry out the battery. Otherwise, you may damage the system board by prying off the socket or by breaking circuit traces on the system board.

NOTICE: To avoid damage to the battery connector, you must firmly support the connector while installing or removing a battery.

5Lift the battery from the system board.

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Installing System Components

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Dell R900 manual Replacing the System Battery, 108