Epson EQUITY 3865X/20 PLUS - Manual (Page 221)

A p p e n d i x 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.
You can test the following devices, each of which is identified by
specific reference numbers:
1 -
2 -
3 -
4 -
5 -
6 -
7 -
9 -
1 1 -
1 2 -
1 4 -
1 7 -
2 1 -
8 1 -
System board
Memory
Keyboard
Monochrome display adapter and CRT
Color graphics adapter and CRT
Diskette 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
Alternate parallel port
Parallel port (on video adapter)
Performing System Diagnostics C-1