Epson 2000 - Manual (Page 96)

Memory Module Problems
The memory count displayed by the power-on diagnostics
program is incorrect.
You may have installed the SIMMs incorrectly. They may be
the wrong type or speed, or they may not be inserted all the
way. See Chapter 3 for information on installing SIMMs.
Controller Problems
You see a controller error for the drive controllers, the video
controller, or the I/O port controllers when you start your
system.
The indicated controller on your system board may be faulty.
If you have an option card with a controller that will work with
your device, you can install it and change the jumper settings
on the system board to disable the built-in controller. You can
then continue to use your system until it is convenient for you
to have it serviced.
If the error message refers to your diskette drive or hard disk
drive controllers, make sure the jumpers for these devices are
set to enabled. See Chapter 3.
Troubleshooting 5-13