Service Manual

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

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

System CMOS checksum bad -- Run SETUP

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

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 program, 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 configuration information. This situation is not caused by a defective battery.

You can operate the system without a battery; however, the system configuration information

maintained by the battery in NVRAM is erased each time you shut down the system. Therefore, you

must reenter the system configuration information and reset the options each time the system boots

until you replace the battery.

The battery is a 3.0-volt (V), coin-cell CR2032-type battery. To remove the battery, perform the

following steps.

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.

1. Enter the System Setup program and, if possible, make a printed copy of the System Setup

screens.

See "Using the System Setup Program

" for instructions.

2. Shut down the system, including any attached peripherals, and disconnect the system from the

electrical outlet.

NOTICE: See "Protecting Against Electrostatic Discharge."

3. Remove the cover

4. Pry the battery out of its socket with your fingers or with a blunt, nonconductive object such as a