Epson Progression U12 - Manual (Page 95)

Installing the Intel 487SX/25 Microprocessor
Carefully follow these steps to install an Intel 487SX/25
microprocessor on the 486SX/25 CPU 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.
3. Position the microprocessor over the socket as shown below.
Align the notched comer of the microprocessor over the
comer in the socket with the extra pin hole.
extra pin hole
Caution
Be sure to all the pins in the microprocessor directly
over the holes in the socket. If you insert the
microprocessor in the wrong position, you could
permanently damage it.
3-26 Installing and Removing Options