Epson 4000 - Manual (Page 76)

8. If you are upgrading from a 486SX processor to a DX or DX2
processor, you need to change the jumper settings of J17
and J19. If you are upgrading to a CPU with a different
clock speed, you may need to change the setting of jumper
J16. See the tables on pages 4-7 and 4-8 for the correct
jumper settings.
9. If you are upgrading to a DX2 processor, you must install
a heat sink. See the next section for instructions.
10. See page 4-20 for instructions on replacing the option card
connector board. Then replace any option cards you
removed.
11. Run SETUP as described in Chapter 2 to update your
computer’s configuration with the new microprocessor.
Installing a Heat Sink
If you are installing a DX2 processor, you must install a heat
sink on the processor chip. Follow the instructions included
with the heat sink.
Post-installation Procedures
After you install or remove options such as memory modules
or a microprocessor, you must run SETUP to update the
computer’s configuration. See Chapter 2 for instructions.
Additionally, you may need to add some commands to your
configuration files. See your operating system manual and the
manual that came with your optional equipment.
Installing and Removing Options 4-29