The remainder of this appendix describes the tests you can run on the system’s internal devices and on the optional devices installed on your computer. The program displays the title of each check on the screen.

Note

For a complete list of the error codes and messages these tests may display, see the table at the end of this chapter.

System Board Check

Use this option to check the operation of each major component on the system board, including:

The 80286 CPU chip

The system ROM

The rea1-time clock, CMOS RAM, and battery

The main integrated circuits.

The checks made on the 80286 CPU chip are extremely comprehensive. They ensure that the CPU instruction set is functioning correctly.

If an error is reported, write down the error code and message, or print them out, and contact your Customer Care Center. Attempting to correct system board errors yourself may violate your warranty agreement.

Performing System Diagnostics

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