Epson EQUITY 3865X/20 PLUS - Manual (Page 181)

If you have a hard disk, follow these steps:
1. At the MS-DOS command prompt, type ROMBIOS and
press
Enter.
(You may need to log onto the directory where
ROMBIOS.COM is stored.) Write down the version
number displayed on your screen.
2. At the MS-DOS command prompt, type VER and press
Enter. The screen displays the MS-DOS version number.
Write down the number so you can give it to your dealer.
If you do not have a hard disk, follow these steps:
1. Insert the Reference diskette in drive A and turn on or reset
your computer.
2. At the Operation Menu, select Exit to MS-DOS
f o r m o r e u t i l i t i e s a n d p r e s s E n t e r .
3. At the A> prompt, type ROMBIOS and press Enter. Write
down the version number displayed on your screen.
4. Remove the Reference diskette and insert your Startup
diskette in drive A. Type VER and press Enter. The screen
displays the MS-DOS version number. Write down the
number so you can give it to your dealer.
Error Messages
Your computer’s built-in memory (ROM) contains a series of
diagnostics programs, called power-on diagnostics, which your
computer runs automatically every time you turn it on. These
programs check internal devices such as ROM, RAM, the timer,
the keyboard controller, and the hard disk drive. The RAM test
program displays the total amount of memory currently installed
in your system. If the computer finds an error, it displays a
specific error number and error message on the screen.
A-2
Troubleshooting