Epson 386/25 - Manual (Page 277)

If your dealer installed SIMMs for you, contact your dealer;
do not attempt to correct the problem yourself. If you
installed the SIMMs, see “Adding Memory Modules” in
Chapter 5 and make sure you have followed all the necessary
instructions.
3. Be sure to run the Setup program after you install or remove
memory modules to automatically update your memory
configuration. See Chapter 2 for instructions.
4. If you are still having trouble with your SIMMs, write down
any error messages that appear and contact your dealer.
Math Coprocessor Problems
If your math coprocessor does not seem to be operating properly,
check the following:
1. Run the Setup program on your Reference diskette and
check to make sure that the math coprocessor is listed as
installed on the Exit display. If it is listed as not
insta11ed, you or your dealer may have installed the
math coprocessor incorrectly. See Chapters 2 and 5 for more
information.
Caution
Do not attempt to remove the math coprocessor yourself.
Contact your dealer for information about a special
extraction tool that is needed to remove it.
2. If your math coprocessor is listed as installed in the
Setup program but still does not seem to be working, check
the manual that came with the math coprocessor for any
additional procedures you may need to perform or any
troubleshooting information.
Troubleshooting D-29