Appendix D

Performing System Diagnostics

This appendix describes how to check the operation of the main unit and peripheral devices of your computer. You check these devices using the diagnostics program on your Reference diskette.

Run the diagnostics program if you are not sure whether a device is performing correctly. The table at the end of this appendix lists the error messages you may see during testing.

If these instructions tell you to contact your Epson Customer Care Center, call 1-800-922-8911 for the location of the nearest Customer Care Center.

You can test the following devices, each of which is identified by a specific reference number:

1 —

System

2

Memory

3 —

Keyboard

4 —

Monochrome display adapter and CRT

5

Color graphics adapter and CRT

6

Floppy disk drives and controller

7

Math coprocessor

9

Parallel port (printer interface)

11 —

Serial port (RS-232C port)

12 —

Alternate serial port

14 —

Dot-matrix printer

17 —

Hard disk drives and controller

81

Parallel port (on video adapter)

Starting System Diagnostics

To run the system diagnostics, you must boot your computer with the Reference diskette in drive A. If you start this program in any other way, some tests may produce strange results.

Performing System Diagnostics

D-1