Epson Progression U12 - Manual (Page 175)

If you have trouble with your mouse or you see an auxiliary
device error message, check the following:
1. Make sure the mouse cable is securely connected to the
mouse port and not the keyboard port. See Chapter 1 of the
Setup Guide for instructions.
2. If you installed a mouse on an option card, be sure to set
jumper JP3 to disable the built-in mouse and set jumper JP4
enable the mouse on the card. See Chapter 3 for instructions.
3. Did you install the mouse driver correctly? See your software
manual and the documentation that came with your mouse
for instructions.
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. If the memory count displayed by the power-on diagnostics
program is incorrect, you or your dealer may not have
installed the SIMMs correctly. They may be installed in the
wrong sockets, they may be the wrong type of SIMM, or
they may not be inserted all the way.
If your dealer installed SIMMs for you, contact your dealer; do
not attempt to correct the problem yourself. If you installed
them, see “Memory Modules” in Chapter 3 and make sure
you followed all the instructions.
2. 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.
Troubleshooting 7-23