Epson 4000 - Manual (Page 106)

You installed or removed system components, and now
your computer does not start.
Check to make sure you have reconnected all the internal and
external cables correctly.
You may have installed option cards that exceed the system’s
power requirements. Check the power requirements in
Appendix A.
You may have installed a SIMM incorrectly. If the system
doesn’t find memory, nothing happens. Check that your
SIMM(s) are securely installed in their sockets.
If you replace the microprocessor, make sure the new processor
chip is installed correctly. Also make sure pin 1 on the chip is
connected with pin 1 on the system board. See Chapter 4.
The Computer Does Not Respond
The computer locks up.
Wait a few moments; if your computer does not respond after a
reasonable length of time, press Ctrl Alt Del. If that doesn’t
work, press the RESET button.
You may have installed memory using SIMMs that work at the
wrong speed. Install the correct SIMMs (see Chapter 4).
Your system may have over-heated. If you are using a DX2
processor, make sure you have an adequate heat sink installed
on the chip.
you reset the computer, but if still does not respond.
Try turning the computer off, wait 20 seconds, and turn it on
again.
7-4 Troubleshooting