Epson Apex 20020 - Manual (Page 165)

Appendix C
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 C-1