Epson Equity 286 PLUS - Manual (Page 108)

3. Cover the option slot opening with the original metal cover
and secure it with the retaining screw.
4. if you are removing an option card that controls a mouse,
you need to change the setting of jumper J4 on the main
system board. If you are removing a display adapter card, you
may need to change the settings of jumpers J1,J3, and J5.
See page 5-7 for instructions.
5. Replace the cover. See page 5-41 for instructions.
Removing the Subassembly
In order to access the SIMM sockets, jumpers J5 and J6, and the
math coprocessor socket on your computer’s main system board,
you need to remove the subassembly that covers them. The
subassembly is the large metal casing that holds the horizontal
drive bays and the power supply, as shown below.
subassembly
5- I 8 Installing and Removing Options