help identify possible defective assemblies. Tables 5-2 through 5-13 list Computer Checkup error codes, a description of the error condition, and the recommended action for resolving the condition. For removal and replacement procedures, refer to Chapter 3.

IMPORTANT: Rerun Computer Checkup each time you complete a recommended action step. If the problem is resolved when POST and Computer Checkup are rerun (i.e., with no error codes), do not perform the remaining recommended action steps.

NOTE: The error codes in the following tables are listed in an AYY-XX format, where:

A or AA

=

Number that represents the faulty assembly.

YY

=

Test or action that failed.

XX

=

Specific problem.