Epson 386SX - Manual (Page 158)

If you need to change or check any jumper settings, perform the
following procedures in the order listed here, as necessary for
your system:
Follow the instructions in “Removing the Cover” earlier in
this chapter to remove the computer’s cover.
If you need to change any jumper settings for jumpers J1, J2,
J3, or J4 on the main system board, remove any option cards
that may be blocking your access to those jumpers. See
“Removing an Option Card” below.
If you need to change the jumper setting of jumper J5 on
the main system board, remove the SIMM card to access
the jumper. See “Removing the SIMM card” below.
Change the main system board jumper settings as necessary.
See “Changing the main system board jumper settings”
below.
If you need to check the SIMM card jumper setting, see
“Checking the SIMM card jumper setting” below.
Replace any option cards you removed. See “Replacing the
options cards” below.
Follow the instructions in “Replacing the Cover” later in
this chapter to replace the computer’s cover.
5-16 Installing Options