User Guide

The controls on your fex21 are simple and, for the most part, self-explanatory.

The only combination of keys you need to remember is that to reset your

computer, as detailed below.

How to adjust the screen contrast

To the left of the

switch, below the

symbol, there are two keys, one

marked

and the other marked

. Press the key marked

to increase

the screen contrast and the key marked

to decrease the screen contrast.

Pressing the

and

keys at the same time will return the unit to the

default contrast setting.

How to use the screen backlight

To the right of the

switch, below the

symbol, there are two keys, one

marked

and the other marked

. These control the backlight, and

function slightly differently for colour and mono units.

EL Backlight - for units with a monochrome display

Press the

key to switch on the screen backlight and the

key to

switch it off.

Because the backlight increases the power drain on the batteries, we suggest

you use it only when necessary. The backlight switches off automatically after a

few minutes if no keys have been pressed.

CCFL backlight - for units with a colour display

Press the

key to increase the backlight intensity by one step and the

key to decrease the intensity by one step. For units fitted with a

transflective screen, the backlight can be turned off completely. For units with

the STN (transmissive) display the backlight can be reduced to low intensity but

cannot be switched off.

Contrast Power

Backlight

Contents