Epson 10020 User Manual

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 —

2 —

3 —
4 —

5 —

6 —

7 —

9 —

11 —

12 —

14 —
17 —

81 —

System

Memory

Keyboard

Monochrome display adapter and CRT

Color graphics adapter and CRT
Floppy disk drives and controller
Math coprocessor
Parallel port (printer interface)
Serial port (RS-232C port)

Alternate serial port
Dot-matrix printer

Hard disk drives and controller
Parallel port (on video adapter)

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