Epson 500 Series - Manual (Page 74)

Numeric coprocessor problems
CMOS battery problems.
If the suggestions here do not solove the problem, perform the steps
below to identify your system and make a note of any error
messages your computer displays. Then contact your Authorized
FPSON Servicer or call the EPSON Connection at 1-800-922-8911
in the United States or 1-800-GO-EPSON in Canada.
Identifying your System
When you request technical assistance, be ready to provide the
serial number of your computer, its ROM BIOS version number,
its configuration (including the types of disk drives and options),
and the names and version numbers of any software programs
you are using.
You can find the serial number on the underside of the computer.
If you are able to use your computer, follow these steps to obtain
information about your configuration, as well as the version
number of your system BIOS and MS-DOS:
1.
2.
3.
4.
Turn on your computer or press Ctrl Alt Delete to restart it.
As the computer perform its power-on diagnostics, it displays
the version number of your system BIOS as part of the
copyright information. We down the number.
write down any information aoubt your setup shown on the
configuration screen that may help in identifying the proglem.
After the MS-DOS prompt appears, type VER and press Enter
do display the MS-DOS version number. Write it down.
A-2 Troubleshooting