Panasonic CF-W4 Series Reference Manual page 25

Confirm the Status Using the LEDs
Indicators Indicators Name
NumLk indicator
(Ten-key mode)
ScrLk indicator
(Scroll lock)
Hard disk drive indicator
Status
This indicator lights green when the NumLk
key is pressed.
Part of the keyboard (see figure below) will func-
tion as a ten-key numeric input. When the green
light is on, part of the keyboard can be used to
input numbers or calculation functions.
The Enter key functions differently depending
on the application.
To disable, press the NumLk key again (the
indicator will turn off).
This indicator lights green when the Fn + ScrLk
key is pressed. Scroll lock functions differently
depending on the application.
This indicator lights when the hard disk drive is
accessed.
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