Dell 4100/180, 4100/200 manual Replacing the Battery, Press F2 to enter the System Setup program

labeled “200MHZ.” (See Appendix C, “Jumpers and Switches,” for more information on jumper locations.)

11.Replace the left computer cover.

12.If you have upgraded the microprocessor to a faster one, remove the old badge from the front of the computer bezel and install the new badge:

a.Remove the bezel according to the instructions in “Removing the Front Bezel” in Chapter 7.

b.The badge is secured to the front bezel with three metal tabs. Press on all three tabs at once to re- lease the detent that holds the badge in place, and then push the tabs out of the front bezel. To install the new badge, insert the three metal tabs through the slots in the front bezel and press on the badge until the detents on the tabs lock into place.

c.Replace the front bezel.

13.Reconnect your computer and peripherals to their power sources, and turn them on.

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

14.Press <F2> to enter the System Setup program, and

check that the PROCESSOR 1 and PROCESSOR 2 cat-

egories match the new system configuration.

See Chapter 4, “Using the System Setup Program,” in the system User’s Guide for instructions.

15.Run the system diagnostics to verify that the new microprocessor is operating correctly.

See Chapter 5, “Running the System Diagnostics,” for information.

Replacing the Battery

The system battery maintains system configuration, date, and time information in a special section of memory when the system is turned off.

The operating life of the battery ranges from two to five years, depending on how the system is used (for example, if the system is on most of the time, the battery gets little use and thus lasts longer). The battery may need replac- ing 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

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

or

Invalid configuration information — please run SETUP program

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

To determine if the battery needs replacing, reenter the time and date through the System Setup program. Turn off the system for a few hours, and then turn it on again. Enter the System Setup program. If the date and time are not correct in the System Setup program, replace the battery.

NOTES: Some software may cause the system time to speed up or slow down. If the system seems to operate normally except for the time kept in the System Setup pro- gram, the problem may be caused by software rather than by a defective battery.

If the system is turned off for long periods of time (for weeks or months), the NVRAM may lose its system con- figuration information. This situation is not caused by a defective battery.

The system can be operated without a battery; however, the system configuration information maintained by the battery in NVRAM is erased each time the computer is turned off. Therefore, the system configuration informa- tion must be reentered and the options reset each time the system boots until the battery is replaced.

The battery is a 3.0-volt (V), coin-cell CR2450-type bat- tery. To remove the battery, follow these steps:

1.If possible, enter the System Setup program and make a printed copy of the system setup screens.

See Chapter 4, “Using the System Setup Program,” in the system User’s Guide for instructions.

8-10 Dell PowerEdge 4100/180 and 4100/200 Systems Installation and Troubleshooting Guide