Produtos da Marca Dell

7. Install the airflow shroud over the SEC cartridge/heat sink assembly.

Fit the mouth of the shroud in the alignment slots on the sides of the cooling fan. Then squeeze the tabs on the top of the shroud and lower it

down until the clips under the tabs engage onto the top of the heat sink.

8. Rotate the power supply back into position.

9. Replace the computer cover, and reconnect your computer and peripherals to their electrical outlets and turn them on.

10. Enter the System Setup program and confirm that the installed microprocessor is correctly identified.

As the system boots, it detects the new microprocessor and automatically changes the system configuration information in the System Setup

program.

11. Run the Dell Diagnostics to verify that the new microprocessor is operating correctly.

See your Diagnostics and Troubleshooting Guide for information on running the Dell Diagnostics and troubleshooting any problems that

may occur.

Replacing the System Battery

A 3.0-volt (V) CR2032 coin-cell battery installed on the system board maintains system configuration, date, and time information in a special

section of memory.

The operating life of the battery can extend up to ten years. The battery may need replacing if an incorrect time or date is displayed during the boot

routine along with a message such as:

Time-of-day not set - please run SETUP program

Invalid configuration information - please run SETUP program

Strike the F1 key to continue, F2 to run the setup utility

To determine whether the battery needs replacing, reenter the time and date through the System Setup program (not through the MS-DOS time

and date commands) and exit the program properly to save the information (see "Using the System Setup Program" for instructions). Turn off your

system and disconnect it from AC power for a few hours; then reconnect and turn on your system. Enter the System Setup program. If the date and

time are not correct in the System Setup program, replace your battery.

You can operate your system without a battery; however, without a battery, the system configuration information is erased if the system is turned off

or unplugged from AC power. In this case, you must enter the System Setup program and reset the configuration options.

Use the following procedure to replace the system battery with another CR2032 coin-cell battery:

1. If you have not already done so, make a copy of your system configuration information in the System Setup program.

If the settings are lost while you are replacing the battery, refer to your written or printed copy of the system configuration information to

restore the correct settings. See "Using the System Setup Program" for instructions.

2. Remove the computer cover according to the instructions in "Removing the Computer Cover."

3. To access the battery on the system board, remove the expansion-card cage as described in "Removing the Expansion-Card

Cage."

NOTE: You must use up to 25 pounds of force to fully engage the SEC cartridge in the connector.

NOTE: If Enabled, the Chassis Intrusion option will cause the following message to be displayed at the next system start-up:

ALERT! Cover was previously removed.

CAUTION: There is a danger of the 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.

CAUTION: Before you remove the computer cover, see "Safety First — For You and Your Computer."

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.

Make certain that the object is inserted between the battery and the socket before attempting 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.