Epson Endeavor - Manual (Page 154)

Memory Module Problems
If you added extra memory to your system by installing SIMMs
and that memory is not operating properly, check the following:
1.
2.
3.
If the memory count displayed by the power-on diagnostics
program is incorrect, you may not have installed the
SIMMs correctly. They may be the wrong type of SIMM or
they may not be inserted all the way.
See “Memory Modules (SIMMs)” in Chapter 2 and make sure
you followed all the instructions.
Be sure to run the SETUP program after you install or
remove memory modules to automatically update your
memory configuration. See Chapter 2 of the Setup Guide for
instructions.
If you still have trouble with your SIMMs, write down any
error messages that appear and contact your Authorized
Epson Servicer.
Troubleshooting 6-25