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PLUS Series LCD Display
Changing the
Lighting and Contrast
Changing the Lighting and Contrast
You can change the level of backlighting and contrast for the screen and keys.
The key lighting is set the same as the screen lighting, except that it remains
switched on at its lowest level even when the screen lighting is turned off, so
that you can always find the keys.
➤ To change the lighting and contrast:
1. Press the
MULTI key to display the soft key controls:
The last-used soft key is highlighted in inverse video (white text on a black
background).
If you press
MULTI during the magnetron warm-up sequence countdown,
only the
LIGHT and CONTRAST sliders are displayed, and the lighting is
automatically switched on at its last-used level.
2. Press the
LIGHT soft key if it is not already highlighted.
Alternatively, you can press the trackpad left and right edges to move side-
ways between the controls to select the
LIGHT soft key.
3. The
LIGHT soft key toggles lighting ON/OFF.
4. Use the trackpad (up or down) to increase or decrease the setting, selecting
one of the eight lighting levels. You can press and hold the trackpad to
change the setting more rapidly. The lighting level is adjusted as you
change the setting.
5. Press the appropriate soft key, or the right arrow on the trackpad, to select
the
CONTRAST control. Adjust the setting in the same way as for the light-
ing. There are 64 different contrast levels.
6. Press
ENTER to remove the soft key sliders and return to the default screen,
with the new lighting and contrast levels retained, or press
CLEAR to dis-
card the changes and return to the default screen.
If lights are left
ON when you switch off the display, the next time the display
is switched on, the lights will be
ON, but at the default setting of 42%. The new
contrast level is retained until you reset it, unless you set the control very low
or very high; in this case, the contrast will be restored as follows:
Contrast set < 30% restored to 30%
Contrast set > 70 % restored to 70%
D3935-3
LIGHT CONTRASTALARM
ON
25%
TUNE
O
F
F
A
U
T
O
50%
LIGHT
75%
CONTRAST
50%
81186_2.book Page 6 Monday, December 17, 2001 8:35 AM