Epson EQUITY 3865X/20 PLUS - Manual (Page 182)

If the error is not serious, you see this prompt:
(Resume = "F1" key)
Write down the error message and code number, and then press
F1 to continue. Give the error message and code number to
your dealer when reporting a problem.
If the error is serious, the computer cancels further checking and
halts system initialization. The error message remains on the
screen and the computer locks up. If this happens, contact your
dealer as soon as possible. Report this information and both the
error message and code number to your dealer.
The following table lists all the error codes and messages that
may appear during power-on diagnostics checks. If you receive
an error message, look it up in the table below. It directs you to
the proper troubleshooting section in this appendix. If you do
not see an error message, read the section that covers your
problem.
Power-on diagnostics error codes and messages
Error code Message Action
System board
101 System board error Contact dealer
102 System board error
103 System board error
105 System board error
106 System board error
107 System board error
108 System board error
Real-time clock
161 System options not set Contact dealer
162 System options not set Run Setup; see
Chapter 2
163 Time and date not set Run Setup; see
Chapter 2
164 Memory size error Run Setup; see
Chapter 2
Troubleshooting A-3