Epson EQUITY 386SX/16 PLUS - Manual (Page 86)

A math coprocessor speeds up the numeric calculations your
computer performs when using certain application software.
If you purchase a math coprocessor, it is a good idea to ask
your dealer to install it for you, because it can be damaged
easily. If you decide to install it yourself, follow the
appropriate steps in this chapter.
This chapter also explains how to change the jumper settings
inside the computer. You may need to change jumper
settings if you install certain types of options or if you want
to change the way your computer operates.
If you need to replace the battery for your computer’s
real-time clock and CMOS RAM, you can follow the
instructions in this chapter.
To change jumper settings, replace the battery, or install any
of the options mentioned above, you need to remove the
cover from the computer. You may also need to remove the
subassembly. Be sure to heed all the warnings in this chapter
so you do not injure yourself or damage the computer.
Removing the Cover
To access any internal components, you need to remove the
computer’s cover. Follow these steps:
1. Turn off the computer and then any peripheral devices
(including the monitor and printer).
2. Disconnect the computer’s power cable from the
electrical outlet and from the back panel. Then
disconnect any cables that are connected to the
computer, including the keyboard cable.
3. If the monitor is on top of the computer, lift it off and set
it to one side.
5-2 Installing and
Removing
Options