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The program continues after an error in one of the
following ways:
l It returns to the DEVICE LIST, or
l If you are running multiple tests and are not terminating
on an error, the program repeats the test that caused the
error.
The remainder of this appendix describes the tests you can
run on the system’s internal devices and on the optional
devices installed in your computer. The program displays the
title of each check on the screen.
For a complete list of the error codes and messages that are
displayed by these tests, see Table D-l at the end of this
appendix.
System Board Check
Use this option to check the operation of each major
component on the system board, including the following:
l The V30™ CPU chip
l The real-time clock, CMOS RAM, and battery
l The main integrated circuits.
The checks made on the V30 CPU chip are extremely
comprehensive. They ensure that the CPU instruction set is
functioning correctly.
If an error occurs, write down the error code and message,
or print them out, and contact your Epson dealer. Attempting
to correct system board errors yourself may violate your
warranty agreement.
Memory Check
Use this option to check the computer’s built-in memory.
D-4
Performing System Diagnostics