Epson 4SLC2-50 - Manual (Page 43)

If necessary, press NumLock to turn Num Lock (and its LED) on.
Then, to change to low speed, press Ctrl Alt –. To change back to
high speed, make sure Num Lock is on, and press Ctrl Alt +.
Note
You must press – or + on the embedded numeric keypad only.
Using the LCD Screen
The screen on your ActionNote is a backlit monochrome LCD. You
can adjust the brightness and contrast with the two controls on the
top left side of the computer. Adjust the switches to produce the
best display for your viewing angle.
Slide the brightness switch to the right to lighten the brightness,
and to the left to darken the brightness. Slide the contrast switch to
the right to increase the contrast, and to the left to decrease the
contrast.
Using Diskettes
Be sure to purchase high-quality diskettes to ensure reliability. For
the 3½-inch, 1.44MB diskette drive in your ActionNote, you can
use either of the following types of diskettes:
720KB, double-sided, double-density (usually labelled 2DD)
1.44MB, double-sided, high-density (labelled 2HD).
Using Your Computer 2-11