Epson Endeavor, User Manual

Page: 66 / 197

lnstalling a
New Processor Chip
If you have a 486SX/25 or 486DX/33 system, you can enhance
your system’s performance by installing an Intel OverDrive
processor. Alternatively, for the 486SX/25, you can install a
487SX/25 microprocessor with built-in math coprocessor.
Complete instructions for installing the processor are provided
in the manual that comes with it. Please follow those
instructions carefully, along with the following guidelines:
Although the OverDrive processor User’s Guide instructs
you to remove the main system board from the computer,
this is not necessary. You can leave the board inside the
computer case while you install the processor.
Refer to the illustration on page 2-3 to locate the
microprocessor socket on the system board. If this socket is
empty, you can install the OverDrive processor (or 487SX
chip) directly in the socket. If it contains the CPU chip, you
need to remove it before you install the new processor.
If you need to remove the existing microprocessor, lift the
lever to release the CPU chip. After you install the new
processor, push the lever down to secure it in the socket.
If you install an OverDrive processor or the 487SX/25 chip,
you may need to change the settings of the jumpers J10
through J12, as described on page 2-7. If you install the
OverDrive processor in an empty socket, you need to
change the jumper setting of J23 to position 2-3 as well.
After you install the processor and replace the computer’s
cover, run the SETUP program so your computer can
update its configuration. See Chapter 2 of the
Setup Guide
for instructions. (You need only run the program and save
the configuration; you do not need to change any settings.)
Installing and Removing Options 2-23