Epson 320SX PLUS Manuel D’Utilisation

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 the

options mentioned above, you must remove the computer’s

cover. You may also need to remove the subassembly. See

Chapter 5 for instructions. (You do not need to remove the

subassembly to install or remove option cards.)

A jumper is a small electrical connector that controls one of

the computer’s functions. The jumper settings in your

computer are preset at the factory; however, you can alter the
following functions by changing the standard settings:

Enable or disable the built-in VGA display adapter

Enable or disable the password function

Set the computer to use a color or monochrome monitor

Enable or disable the built-in mouse connector.

If you need to change any jumper settings, follow the

instructions in this section.