Epson Progression U12 - Manual (Page 96)

4. Make sure the pins in the microprocessor are directly over
the holes in the socket. Then gently push it straight into the
socket, pressing evenly on all sides.
5. Reinstall the CPU card as described on page 3-19.
6. After you replace the computer’s cover, be sure to run the
SETUP program so your computer can update its
configuration. (See Chapter 2 of the Setup Guide for
instructions.) Additionally, if the microprocessor came with
any diagnostic software, you may want to run it to test the
new microprocessor. (See the documentation for
instructions.)
installing a Weitek 4167 Coprocessor
Carefully follow these steps to install a Weitek 4167 math
coprocessor on either the 486DX/33 or 486DX2/66 card:
1. Remove the CPU card as described on page 3-18.
2. Place the card on an anti-static work surface with the
components facing up.
Installing and Removing Options 3-27